com.smartgwt.client.widgets

## Class Canvas

- java.lang.Object
- - com.google.gwt.user.client.ui.UIObject
  - - com.google.gwt.user.client.ui.Widget
    - - com.smartgwt.client.widgets.BaseWidget
      - - com.smartgwt.client.widgets.Canvas

- All Implemented Interfaces:
    com.google.gwt.event.logical.shared.HasAttachHandlers, com.google.gwt.event.shared.HasHandlers, com.google.gwt.user.client.EventListener, com.google.gwt.user.client.ui.HasVisibility, com.google.gwt.user.client.ui.IsWidget, LogicalStructure, HasClickHandlers, HasDoubleClickHandlers, HasDragMoveHandlers, HasDragRepositionMoveHandlers, HasDragRepositionStartHandlers, HasDragRepositionStopHandlers, HasDragResizeMoveHandlers, HasDragResizeStartHandlers, HasDragResizeStopHandlers, HasDragStartHandlers, HasDragStopHandlers, HasDropHandlers, HasDropMoveHandlers, HasDropOutHandlers, HasDropOverHandlers, HasFocusChangedHandlers, HasHoverHandlers, HasHoverHiddenHandlers, HasKeyDownHandlers, HasKeyPressHandlers, HasMouseDownHandlers, HasMouseMoveHandlers, HasMouseOutHandlers, HasMouseOverHandlers, HasMouseStillDownHandlers, HasMouseUpHandlers, HasMouseWheelHandlers, HasMovedHandlers, HasParentMovedHandlers, HasResizedHandlers, HasRightMouseDownHandlers, HasScrolledHandlers, HasShowContextMenuHandlers, HasVisibilityChangedHandlers
  Direct Known Subclasses:
    BrowserPlugin, Calendar, DetailViewer, DrawKnob, DrawPane, DynamicForm, EdgedCanvas, EditPane, GridRenderer, HTMLFlow, Layout, LayoutSpacer, PrintCanvas, RangeSlider, Slider, StatefulCanvas, TabSet, TileLayout, WidgetCanvas

      public class Canvas
      extends BaseWidget
      implements HasClickHandlers, HasDoubleClickHandlers, HasDragMoveHandlers, HasDragRepositionMoveHandlers, HasDragRepositionStartHandlers, HasDragRepositionStopHandlers, HasDragResizeMoveHandlers, HasDragResizeStartHandlers, HasDragResizeStopHandlers, HasDragStartHandlers, HasDragStopHandlers, HasDropMoveHandlers, HasDropOutHandlers, HasDropOverHandlers, HasFocusChangedHandlers, HasHoverHandlers, HasHoverHiddenHandlers, HasKeyDownHandlers, HasKeyPressHandlers, HasMouseDownHandlers, HasMouseMoveHandlers, HasMouseOutHandlers, HasMouseOverHandlers, HasMouseStillDownHandlers, HasMouseUpHandlers, HasMouseWheelHandlers, HasMovedHandlers, HasDropHandlers, HasParentMovedHandlers, HasResizedHandlers, HasRightMouseDownHandlers, HasScrolledHandlers, HasShowContextMenuHandlers, HasVisibilityChangedHandlers

  Base class for all Smart GWT visual components (except `FormItems`).

  Canvas provides:

  - basic visual lifecycle support - creation and destruction of HTML via `draw()` and `clear()`, visibility via `show()` and `hide()`, z-layering via `bringToFront()` and `sendToBack()`.
  - consistent cross-browser `positioning`, `sizing` and `size detection`, with automatic compensation for `browser CSS behavior differences`.
  - clipping, scrolling and overflow management of content via `overflow`
  - consistent cross-browser `key` and `mouse` events, including `mapping touch events` to mouse events
  - built-in drag and drop capabilities including `moving`, `resizing`, `drag scrolling` and `snap-to-grid` behavior.
  - the ability to either contain `HTML content` or `contain other Canvases`, including `an edge-based positioning` and `percent sizing system` for children. For more advanced layout capabilities, see `Layout`.
  - various other details like `cursors`, `modal masking`, `animation`, `accessibility properties`, and `settings` for `automated testing`.

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

      `com.google.gwt.user.client.ui.UIObject.DebugIdImpl, com.google.gwt.user.client.ui.UIObject.DebugIdImplEnabled`

  - ### Field Summary

    - ### Fields inherited from class com.smartgwt.client.widgets.BaseWidget

      `config, configOnly, factoryCreated, factoryProperties, id, nativeObject, scClassName`

    - ### Fields inherited from class com.google.gwt.user.client.ui.UIObject

      `DEBUG_ID_PREFIX`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `Canvas()`
    `Canvas(com.google.gwt.core.client.JavaScriptObject jsObj)`
    `Canvas(java.lang.String id)`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `Canvas` | `addChild(Canvas newChild)` Adds newChild as a child of this widget, set up a named object reference (i.e., this[name]) to the new widget if name argument is provided, and draw the child if this widget has been drawn already.
    `Canvas` | `addChild(Canvas newChild, java.lang.String name)`
    `Canvas` | `addChild(Canvas newChild, java.lang.String name, boolean autoDraw)` Adds newChild as a child of this widget, set up a named object reference (i.e., this[name]) to the new widget if name argument is provided, and draw the child if this widget has been drawn already.
    `Canvas` | `addChild(Canvas newChild, java.lang.String name, java.lang.Boolean autoDraw)` Adds newChild as a child of this widget, set up a named object reference (i.e., this[name]) to the new widget if name argument is provided, and draw the child if this widget has been drawn already.
    `void` | `addChild(com.google.gwt.user.client.ui.Widget widget)` Adds newChild as a child of this widget, set up a named object reference (i.e., this[name]) to the new widget if name argument is provided, and draw the child if this widget has been drawn already.
    `com.google.gwt.event.shared.HandlerRegistration` | `addClickHandler(ClickHandler handler)` Add a click handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDoubleClickHandler(DoubleClickHandler handler)` Add a doubleClick handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragMoveHandler(DragMoveHandler handler)` Add a dragMove handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragRepositionMoveHandler(DragRepositionMoveHandler handler)` Add a dragRepositionMove handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragRepositionStartHandler(DragRepositionStartHandler handler)` Add a dragRepositionStart handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragRepositionStopHandler(DragRepositionStopHandler handler)` Add a dragRepositionStop handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragResizeMoveHandler(DragResizeMoveHandler handler)` Add a dragResizeMove handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragResizeStartHandler(DragResizeStartHandler handler)` Add a dragResizeStart handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragResizeStopHandler(DragResizeStopHandler handler)` Add a dragResizeStop handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragStartHandler(DragStartHandler handler)` Add a dragStart handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragStopHandler(DragStopHandler handler)` Add a dragStop handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDropHandler(DropHandler handler)` Add a drop handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDropMoveHandler(DropMoveHandler handler)` Add a dropMove handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDropOutHandler(DropOutHandler handler)` Add a dropOut handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDropOverHandler(DropOverHandler handler)` Add a dropOver handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addFocusChangedHandler(FocusChangedHandler handler)` Add a focusChanged handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addHoverHandler(HoverHandler handler)` Add a hover handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addHoverHiddenHandler(HoverHiddenHandler handler)` Add a hoverHidden handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addKeyDownHandler(KeyDownHandler handler)` Add a keyDown handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addKeyPressHandler(KeyPressHandler handler)` Add a keyPress handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addMouseDownHandler(MouseDownHandler handler)` Add a mouseDown handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addMouseMoveHandler(MouseMoveHandler handler)` Add a mouseMove handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addMouseOutHandler(MouseOutHandler handler)` Add a mouseOut handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addMouseOverHandler(MouseOverHandler handler)` Add a mouseOver handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addMouseStillDownHandler(MouseStillDownHandler handler)` Add a mouseStillDown handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addMouseUpHandler(MouseUpHandler handler)` Add a mouseUp handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addMouseWheelHandler(MouseWheelHandler handler)` Add a mouseWheel handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addMovedHandler(MovedHandler handler)` Add a moved handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addParentMovedHandler(ParentMovedHandler handler)` Add a parentMoved handler.
    `Canvas` | `addPeer(Canvas newPeer)` Adds newPeer as a peer of this widget (also making it a child of this widget's parent, if any), set up a named object reference (i.e., this[name]) to the new widget if name is provided, and draw the peer if this widget has been drawn already.
    `Canvas` | `addPeer(Canvas newPeer, java.lang.String name)`
    `Canvas` | `addPeer(Canvas newPeer, java.lang.String name, java.lang.Boolean autoDraw)`
    `Canvas` | `addPeer(Canvas newPeer, java.lang.String name, java.lang.Boolean autoDraw, java.lang.Boolean preDraw)` Adds newPeer as a peer of this widget (also making it a child of this widget's parent, if any), set up a named object reference (i.e., this[name]) to the new widget if name is provided, and draw the peer if this widget has been drawn already.
    `com.google.gwt.event.shared.HandlerRegistration` | `addResizedHandler(ResizedHandler handler)` Add a resized handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addRightMouseDownHandler(RightMouseDownHandler handler)` Add a rightMouseDown handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addScrolledHandler(ScrolledHandler handler)` Add a scrolled handler.
    `com.google.gwt.event.shared.HandlerRegistration` | `addShowContextMenuHandler(ShowContextMenuHandler handler)` Add a showContextMenu handler.
    `void` | `addSnapAlignCandidate(Canvas newCandidate)` Add a candidate to `snapAlignCandidates`.
    `void` | `addStyleName(java.lang.String style)` Multiple styles are currently not supported.
    `com.google.gwt.event.shared.HandlerRegistration` | `addVisibilityChangedHandler(VisibilityChangedHandler handler)` Add a visibilityChanged handler.
    `void` | `adjustForContent(boolean immediate)` This method tells a component to adjust for size changes made to content by external code.
    `void` | `animateFade(int opacity)` Animate a change in opacity from the widget's current opacity to the specified opacity.
    `void` | `animateFade(int opacity, AnimationCallback callback)` Animate a change in opacity from the widget's current opacity to the specified opacity.
    `void` | `animateFade(int opacity, AnimationCallback callback, int duration)` Animate a change in opacity from the widget's current opacity to the specified opacity.
    `void` | `animateFade(int opacity, AnimationCallback callback, int duration, AnimationAcceleration acceleration)` Animate a change in opacity from the widget's current opacity to the specified opacity.
    `void` | `animateFade(java.lang.Integer opacity)` Animate a change in opacity from the widget's current opacity to the specified opacity.
    `void` | `animateFade(java.lang.Integer opacity, AnimationCallback callback)`
    `void` | `animateFade(java.lang.Integer opacity, AnimationCallback callback, java.lang.Integer duration)`
    `void` | `animateFade(java.lang.Integer opacity, AnimationCallback callback, java.lang.Integer duration, AnimationAcceleration acceleration)` Animate a change in opacity from the widget's current opacity to the specified opacity.
    `void` | `animateHide(AnimationEffect effect)` Hide a canvas by shrinking it vertically to zero height over a period of time.
    `void` | `animateHide(AnimationEffect effect, AnimationCallback callback)` Hide a canvas by shrinking it vertically to zero height over a period of time.
    `void` | `animateHide(AnimationEffect effect, AnimationCallback callback, int duration)` Hide a canvas by shrinking it vertically to zero height over a period of time.
    `void` | `animateMove(java.lang.Integer left, java.lang.Integer top)` Animate a reposition of this canvas from its current position to the specified position
    `void` | `animateMove(java.lang.Integer left, java.lang.Integer top, AnimationCallback callback)`
    `void` | `animateMove(java.lang.Integer left, java.lang.Integer top, AnimationCallback callback, java.lang.Integer duration)`
    `void` | `animateMove(java.lang.Integer left, java.lang.Integer top, AnimationCallback callback, java.lang.Integer duration, AnimationAcceleration acceleration)` Animate a reposition of this canvas from its current position to the specified position
    `void` | `animateRect(java.lang.Integer left, java.lang.Integer top, java.lang.Integer width, java.lang.Integer height)` Animate a reposition / resize of this canvas from its current size and position.
    `void` | `animateRect(java.lang.Integer left, java.lang.Integer top, java.lang.Integer width, java.lang.Integer height, AnimationCallback callback)`
    `void` | `animateRect(java.lang.Integer left, java.lang.Integer top, java.lang.Integer width, java.lang.Integer height, AnimationCallback callback, java.lang.Integer duration)`
    `void` | `animateRect(java.lang.Integer left, java.lang.Integer top, java.lang.Integer width, java.lang.Integer height, AnimationCallback callback, java.lang.Integer duration, AnimationAcceleration acceleration)` Animate a reposition / resize of this canvas from its current size and position.
    `void` | `animateResize(java.lang.Integer width, java.lang.Integer height)` Animate a resize of this canvas from its current size to the specified size
    `void` | `animateResize(java.lang.Integer width, java.lang.Integer height, AnimationCallback callback)`
    `void` | `animateResize(java.lang.Integer width, java.lang.Integer height, AnimationCallback callback, java.lang.Integer duration)`
    `void` | `animateResize(java.lang.Integer width, java.lang.Integer height, AnimationCallback callback, java.lang.Integer duration, AnimationAcceleration acceleration)` Animate a resize of this canvas from its current size to the specified size
    `void` | `animateScroll(java.lang.Integer scrollLeft, java.lang.Integer scrollTop)` Animate a scroll from the current scroll position to the specified position.
    `void` | `animateScroll(java.lang.Integer scrollLeft, java.lang.Integer scrollTop, AnimationCallback callback)`
    `void` | `animateScroll(java.lang.Integer scrollLeft, java.lang.Integer scrollTop, AnimationCallback callback, java.lang.Integer duration)`
    `void` | `animateScroll(java.lang.Integer scrollLeft, java.lang.Integer scrollTop, AnimationCallback callback, java.lang.Integer duration, AnimationAcceleration acceleration)` Animate a scroll from the current scroll position to the specified position.
    `void` | `animateScroll(int scrollLeft, int scrollTop, AnimationCallback callback)` Animate a scroll from the current scroll position to the specified position.
    `void` | `animateScroll(int scrollLeft, int scrollTop, AnimationCallback callback, int duration)` Animate a scroll from the current scroll position to the specified position.
    `void` | `animateShow(AnimateShowEffect effect)` Show a canvas by growing it vertically to its fully drawn height over a period of time.
    `void` | `animateShow(AnimateShowEffect effect, AnimationCallback callback)` Show a canvas by growing it vertically to its fully drawn height over a period of time.
    `void` | `animateShow(AnimateShowEffect effect, AnimationCallback callback, int duration)` Show a canvas by growing it vertically to its fully drawn height over a period of time.
    `void` | `animateShow(AnimationEffect effect)` Show a canvas by growing it vertically to its fully drawn height over a period of time.
    `void` | `animateShow(AnimationEffect effect, AnimationCallback callback)` Show a canvas by growing it vertically to its fully drawn height over a period of time.
    `void` | `animateShow(AnimationEffect effect, AnimationCallback callback, int duration)` Show a canvas by growing it vertically to its fully drawn height over a period of time.
    `static <T extends Canvas> T` | `asSGWTComponent(com.google.gwt.core.client.JavaScriptObject jsObj)` Returns the existing SGWT widget, or creates and returns one if none exist, associated with the supplied `JavaScriptObject`.
    `void` | `blur()` If this canvas has keyboard focus, blur it.
    `void` | `bringToFront()` Puts this widget at the top of the stacking order, so it appears in front of all other widgets in the same parent.
    `static void` | `changeAutoChildDefaults(java.lang.String autoChildName, Canvas defaults)` Changes the defaults for Canvas AutoChildren named `autoChildName`.
    `static void` | `changeAutoChildDefaults(java.lang.String autoChildName, FormItem defaults)` Changes the defaults for FormItem AutoChildren named `autoChildName`.
    `void` | `clear()` Remove all visual representation of a Canvas, including all child or member Canvases, or managed top-level components such as the ListGrid drop location indicator.
    `java.lang.Boolean` | `clickMaskUp()` Determines whether a clickmask is showing
    `java.lang.Boolean` | `clickMaskUp(java.lang.String ID)` Determines whether a clickmask is showing
    `java.lang.Boolean` | `contains(Canvas canvas)` Returns true if element is a descendant of this widget (i.e., exists below this widget in the containment hierarchy); and false otherwise.
    `java.lang.Boolean` | `contains(Canvas canvas, java.lang.Boolean testSelf)` Returns true if element is a descendant of this widget (i.e., exists below this widget in the containment hierarchy); and false otherwise.
    `java.lang.Boolean` | `containsEvent()` Return true if the last event's mouse coordinates are within the bounds of this component.
    `java.lang.Boolean` | `containsFocus()` Returns true if the keyboard focus is in this Canvas or any child of this Canvas.
    `java.lang.Boolean` | `containsPoint(int x, int y)` Return whether or not this object contains the specified global (x,y) coordinates.
    `java.lang.Boolean` | `containsPoint(int x, int y, java.lang.Boolean withinViewport)` Return whether or not this object contains the specified global (x,y) coordinates.
    `protected com.google.gwt.core.client.JavaScriptObject` | `create()`
    `void` | `deparent()` Remove this canvas from its parent if it has one.
    `void` | `depeer()` Make this Canvas no longer a peer of its master
    `void` | `disable()` Disables this widget and any children and peers of this widget.
    `void` | `enable()` Enables this widget and any children / peers of this widget.
    `java.lang.Boolean` | `encloses(Canvas other)` Returns true if the rectangle of this widget encloses the rectangle of the specified widget.
    `void` | `focus()` If this canvas can accept focus, give it keyboard focus.
    `void` | `focusInNextTabElement()` Shifts focus to the next focusable element after this one.
    `void` | `focusInPreviousTabElement()` Shifts focus to the previous focusable element before this one.
    `int` | `getAbsoluteLeft()` This method is similar to `getPageLeft()`.
    `int` | `getAbsoluteTop()` This method is similar to `getPageTop()`.
    `java.lang.String` | `getAccessKey()` If specified this governs the HTML accessKey for the widget.
    `java.lang.Boolean` | `getAlwaysShowScrollbars()` On `touch devices` that support native touch scrolling, if `showCustomScrollbars` is `true` and touch scrolling has not been disabled by the `useTouchScrolling` and/or `disableTouchScrollingForDrag` settings, should custom scrollbars and native touch scrolling be enabled for this component? If `false` or unset, then only native touch scrolling will be enabled.
    `AnimationAcceleration` | `getAnimateAcceleration()` Default acceleration effect to apply to all animations on this Canvas.
    `java.lang.Integer` | `getAnimateFadeTime()` Default time for performing an animated fade.
    `AnimationAcceleration` | `getAnimateHideAcceleration()` Default acceleration function for performing an animated hide.
    `java.lang.Integer` | `getAnimateHideTime()` Default time for performing an animated hide.
    `AnimationAcceleration` | `getAnimateMoveAcceleration()` Default acceleration effect for performing an animated move.
    `java.lang.Integer` | `getAnimateMoveTime()` Default time for performing an animated move.
    `AnimationAcceleration` | `getAnimateRectAcceleration()` Default acceleration function for performing an animated move and resize.
    `java.lang.Integer` | `getAnimateRectTime()` Default time for performing an animated setRect.
    `AnimationAcceleration` | `getAnimateResizeAcceleration()` Default acceleration function for performing an animated resize.
    `java.lang.Integer` | `getAnimateResizeTime()` Default time for performing an animated resize.
    `AnimationAcceleration` | `getAnimateScrollAcceleration()` Default acceleration function for performing an animated scroll.
    `java.lang.Integer` | `getAnimateScrollTime()` Default time for performing an animated scroll.
    `AnimationAcceleration` | `getAnimateShowAcceleration()` Default acceleration function for performing an animated show.
    `AnimationEffect` | `getAnimateShowEffect()` Default animation effect to use if `Canvas#animateShow()` is called without an explicit effect parameter.
    `java.lang.Integer` | `getAnimateShowTime()` Default time for performing an animated show.
    `int` | `getAnimateTime()` Default total duration of animations.
    `java.lang.String` | `getAppImgDir()` Default directory for app-specific images, relative to the Page-wide `appImgDir`.
    `java.lang.String` | `getAriaRole()` ARIA role of this component.
    `java.lang.Boolean` | `getAutoDraw()` If true, this canvas will draw itself immediately after it is created.
    `java.lang.Boolean` | `getAutoMaskComponents()` Deprecated. As of Smart GWT version 10.0, deprecated in favor of `EditProxy.autoMaskChildren`
    `java.lang.Boolean` | `getAutoShowParent()` If set to true, the widget's parent (if any) will automatically be shown whenever the widget is shown.
    `java.lang.String` | `getBackgroundColor()` The background color for this widget.
    `java.lang.String` | `getBackgroundImage()` URL for a background image for this widget (corresponding to the CSS "background-image" attribute).
    `java.lang.String` | `getBackgroundPosition()` Specifies how the background image should be positioned on the widget.
    `BackgroundRepeat` | `getBackgroundRepeat()` Specifies how the background image should be tiled if this widget is larger than the image.
    `java.lang.String` | `getBorder()` Set the CSS border of this component, as a CSS string including border-width, border-style, and/or color (eg "2px solid blue").
    `int` | `getBottom()` Return the bottom coordinate of this object as rendered, relative to its enclosing context, in pixels.
    `static Canvas` | `getById(java.lang.String ID)` Retrieve a Canvas by its global `ID`.
    `static Canvas` | `getByJSObject(com.google.gwt.core.client.JavaScriptObject jsObj)` Retrieve a Canvas from its `JavaScriptObject`.
    `Canvas` | `getByLocalId(java.lang.String ID)` Retrieve a child of this Canvas by it's local ID.
    `java.lang.Boolean` | `getCanAcceptDrop()` Indicates that this object can receive dropped widgets (i.e.
    `java.lang.Boolean` | `getCanDrag()` Indicates whether this widget can initiate custom drag-and-drop operations (other than reposition or resize).
    `java.lang.Boolean` | `getCanDragReposition()` Indicates whether this widget can be moved by a user of your application by simply dragging with the mouse.
    `java.lang.Boolean` | `getCanDragResize()` Indicates whether this widget can be resized by dragging on the edges and/or corners of the widget with the mouse.
    `boolean` | `getCanDragScroll()` If this Canvas is canAcceptDrop:true, when the user drags a droppable widget over an edge of the widget, should we scroll to show the rest of the widget's content? Returned from canvas.shouldDragScroll() if there are scrollbars.
    `java.lang.Boolean` | `getCanDrop()` Indicates that this object can be dropped on top of other widgets.
    `java.lang.Boolean` | `getCanDropBefore()` When explicitly set to false, disallows drop before this member in the Layout.
    `java.lang.Boolean` | `getCanFocus()` Can this widget be allowed to become the target of keyboard events?
    `java.lang.Boolean` | `getCanHover()` Will this Canvas fire hover events when the user hovers over it, or one of its children?
    `java.lang.Boolean` | `getCanSelectText()` Whether native drag selection of contained text is allowed within this Canvas.
    `Canvas` | `getCanvasAutoChild(java.lang.String autoChildName)` Returns the `Canvas` AutoChild named `autoChildName` if already created.
    `CanvasItem` | `getCanvasItem()` If this canvas is being displayed in a `CanvasItem`, this property will be set to point at the item.
    `Canvas[]` | `getChildren()` Array of all Canvii that are immediate children of this Canvas.
    `java.lang.Boolean` | `getChildrenResizeSnapAlign()` Flag to disable snapping to alignment when children of this Canvas are resized
    `java.lang.Boolean` | `getChildrenSnapAlign()` If enabled while `childrenSnapToGrid` is enabled, children dragged within this Canvas will also snap to positions where their edges or center lines would be aligned with the edges or centers of other components, and lines will be shown to point out the possible alignment (with appearance controlled by `snapAlignCenterLineStyle` and `snapAlignEdgeLineStyle` respectively.
    `java.lang.Boolean` | `getChildrenSnapCenterAlign()` See `childrenSnapAlign`.
    `java.lang.Boolean` | `getChildrenSnapEdgeAlign()` See `childrenSnapAlign`.
    `java.lang.Boolean` | `getChildrenSnapResizeToGrid()` If true, causes this canvas's children to snap to its grid when resizing.
    `java.lang.Boolean` | `getChildrenSnapToGrid()` If true, causes this canvas's children to snap to its grid when dragging.
    `java.lang.String` | `getClassName()` Returns the javascript class name.
    `Canvas` | `getComponentMask()` Automatically generated mask canvas displayed when `showComponentMask()` is called.
    `Canvas` | `getComponentMaskDefaults()` Defaults for the `componentMask` autoChild.
    `com.google.gwt.user.client.Element` | `getContentElement()` Returns the DOM element for this Canvas which contains the `contents`, or for `parent components`, the DOM elements for any drawn children.
    `java.lang.String` | `getContents()` The contents of a canvas or label widget.
    `Menu` | `getContextMenu()` Context menu to show for this object, an instance of the Menu widget.
    `Cursor` | `getCursor()` Specifies the cursor image to display when the mouse pointer is over this widget.
    `java.lang.String` | `getDataPath()` A dataPath may be specified on any canvas.
    `int` | `getDefaultHeight()` For custom components, establishes a default height for the component.
    `int` | `getDefaultWidth()` For custom components, establishes a default width for the component.
    `java.lang.Boolean` | `getDestroyed()` If this property is set to `true`, the `destroy()` method has been called on this canvas.
    `java.lang.Boolean` | `getDestroying()` This property is set to true when the `destroy()` method is called on a widget.
    `boolean` | `getDisabled()` If set to true, the widget will be disabled.
    `Cursor` | `getDisabledCursor()` Specifies the cursor image to display when the mouse pointer is over this widget if this widget is disabled.
    `java.lang.Boolean` | `getDisableTouchScrollingForDrag()` Disables `useTouchScrolling` whenever a built-in drag operation has been enabled which is known to be non-functional if touch scrolling is enabled.
    `int` | `getDoubleClickDelay()` Amount of time (in milliseconds) between which two clicks are considered a single click
    `DragAppearance` | `getDragAppearance()` Visual appearance to show when the object is being dragged.
    `DragIntersectStyle` | `getDragIntersectStyle()` This indicates how the system will test for droppable targets: either by intersection with the mouse or intersection with the rectangle of the dragMoveTarget.
    `DragMaskType` | `getDragMaskType()` This property controls what kind of mask is used in case `useDragMask` is enabled.
    `java.lang.Integer` | `getDragOpacity()` If this widget has dragAppearance `"target"`, this value specifies the opacity to render the target while it is being dragged.
    `DragAppearance` | `getDragRepositionAppearance()` If `canDragReposition` is true, this attributes specifies the visual appearance to show during drag reposition.
    `Cursor` | `getDragRepositionCursor()` Cursor to switch to if the mouse is over a widget that is drag repositionable.
    `DragAppearance` | `getDragResizeAppearance()` If `canDragResize` is true, this attributes specifies the visual appearance to show during drag resize.
    `int` | `getDragScrollDelay()` If this widget supports drag-scrolling, This property specifies how many ms the user must hover over the drag-scroll threshold before scrolling begins.
    `int` | `getDragStartDistance()` Number of pixels the cursor needs to move before the EventHandler starts a drag operation.
    `Canvas` | `getDragTarget()` A different widget that should be actually dragged when dragging initiates on this widget.
    `java.lang.String` | `getDragType()` Sets a `dragType` for this widget used, to be compared to `dropTypes` on possible drop target widgets.
    `java.lang.String[]` | `getDropTypes()` When a drag and drop interaction occurs, if a `dragType` is configured on the source widget, it is compared to the `dropTypes` configured on the target widget, and a drop is only allowed if the `dragType` is listed in the target widget's `dropTypes` array.
    `java.lang.String` | `getDropTypesAsString()` When a drag and drop interaction occurs, if a `dragType` is configured on the source widget, it is compared to the `dropTypes` configured on the target widget, and a drop is only allowed if the `dragType` is listed in the target widget's `dropTypes` array.
    `java.lang.Boolean` | `getDynamicContents()` Dynamic contents allows the contents string to be treated as a simple, but powerful template.
    `java.lang.String` | `getEdgeBackgroundColor()` Background color for the EdgedCanvas created to decorate this component.
    `java.lang.String` | `getEdgeCenterBackgroundColor()` Background color for the center section only.
    `java.lang.String` | `getEdgeImage()` Base name of images for edges.
    `int` | `getEdgeMarginSize()` How far into the edge of an object do we consider the "edge" for drag resize purposes?
    `java.lang.Integer` | `getEdgeOffset()` Amount the contained Canvas should be offset.
    `java.lang.Integer` | `getEdgeOpacity()` Opacity of the edges.
    `java.lang.Boolean` | `getEdgeShowCenter()` Whether to show media in the center section, that is, behind the decorated Canvas.
    `int` | `getEdgeSize()` Size in pixels for corners and edges
    `EditNode` | `getEditNode()` The component's `EditNode` for a component that has been created by a `Palette` from a `PaletteNode`.
    `EditProxy` | `getEditProxy()` An `EditProxy` controls the behaviors of a component when it is placed into `editing mode`.
    `java.lang.String` | `getEditProxyConstructor()` Default class used to construct the `EditProxy` for this component when the component is `first placed into edit mode`.
    `com.google.gwt.user.client.Element` | `getElement()` Normal usage of SmartGWT is to call draw() on SmartGWT widgets, not to use use RootPanel.add().
    `com.google.gwt.user.client.Element` | `getElement(boolean allowPreRender)`
    `static EdgeName` | `getEventEdge()` Check if an event is within an "edge" of this canvas.
    `static EdgeName` | `getEventEdge(EdgeName... edgeMask)` Check if an event is within an "edge" of this canvas.
    `int` | `getExtraSpace()` When this Canvas is included as a member in a Layout, extra blank space that should be left after this member in a Layout.
    `java.lang.String` | `getFacetId()` If a Canvas is dropped onto a `CubeGrid`, and it has a `facetId` property specified then the Cube treats this as adding that facetId at the drop location.
    `FormItem` | `getFormItemAutoChild(java.lang.String autoChildName)` Returns the `FormItem` AutoChild named `autoChildName` if already created.
    `java.lang.String` | `getFullDataPath()` Returns a fully qualified `DataPath` for this canvas.
    `java.lang.String` | `getGroupBorderCSS()` Sets the style for the grouping frame around the canvas.
    `java.lang.String` | `getGroupLabelBackgroundColor()` If set, the background color of the grouping label.
    `java.lang.String` | `getGroupLabelStyleName()` Sets the style for the grouping label.
    `java.lang.String` | `getGroupTitle()` The title/label for the grouping.
    `java.lang.Integer` | `getHeight()` Size for this component's vertical dimension.
    `java.lang.String` | `getHeightAsString()`
    `boolean` | `getHideUsingDisplayNone()` When this widget is hidden (see `visibility` and `hide()`), should display:none be applied to the `outer element`?
    `Alignment` | `getHoverAlign()` If `this.showHover` is true, this property can be used to customize the alignment of content in the hover canvas.
    `java.lang.Boolean` | `getHoverAutoDestroy()` If `this.showHover` is true and `getHoverComponent()` is implemented, should the hoverCanvas returned from it be automatically destroyed when it is hidden?
    `Canvas` | `getHoverComponent()` When `showHoverComponents` is true, this method is called to get the component to show as a hover for this Canvas.
    `int` | `getHoverDelay()` If `this.canHover` is true, how long should the mouse be kept over this widget before the hover event is fired
    `java.lang.Integer` | `getHoverHeight()` If `this.showHover` is true, this property can be used to customize the height of the hover canvas shown.
    `java.lang.String` | `getHoverHTML()` If `this.showHover` is true, when the user holds the mouse over this Canvas for long enough to trigger a hover event, a hover canvas is shown by default.
    `java.lang.Boolean` | `getHoverMoveWithMouse()` If `this.showHover` is true, should this widget's hover canvas be moved with the mouse while visible?
    `java.lang.Integer` | `getHoverOpacity()` If `this.showHover` is true, should the hover canvas be shown with opacity other than 100?
    `java.lang.String` | `getHoverStyle()` If `this.showHover` is true, this property can be used to specify the css style to apply to the hover canvas.
    `VerticalAlignment` | `getHoverVAlign()` If `this.showHover` is true, this property can be used to customize the vertical alignment of content in the hover canvas.
    `java.lang.Integer` | `getHoverWidth()` If `this.showHover` is true, this property can be used to customize the width of the hover canvas shown.
    `java.lang.Boolean` | `getHoverWrap()` If `this.showHover` is true, this property can be used to customize the whether content in the hover canvas is displayed in a single line, or wraps.
    `int` | `getHSnapOrigin()` Get an offset to be used when calculating snap positioning.
    `int` | `getHSnapOrigin(Canvas snapChild)` Get an offset to be used when calculating snap positioning.
    `int` | `getHSnapPosition(int coordinate)` Override this method to provide a custom snap-to grid.
    `int` | `getHSnapPosition(int coordinate, java.lang.String direction)` Override this method to provide a custom snap-to grid.
    `com.google.gwt.user.client.Element` | `getHtmlElement()` If specified as a pointer to an HTML element present in the DOM, this canvas will be rendered inside that element on `draw()`.
    `DrawPosition` | `getHtmlPosition()` If `htmlElement` is specified, this attribute specifies the position where the canvas should be inserted relative to the `htmlElement` in the DOM.
    `com.google.gwt.user.client.Element` | `getImage(java.lang.String identifier)` Retrieve a native image element by name.
    `static java.lang.String` | `getImgURL(java.lang.String URL)` Return the full URL for an image to be drawn in this canvas.
    `static java.lang.String` | `getImgURL(java.lang.String URL, java.lang.String imgDir)` Return the full URL for an image to be drawn in this canvas.
    `int` | `getInnerContentHeight()` Returns the amount of space available for interior content (or relatively positioned child widget(s)) without introducing clipping, scrolling or overflow. This is the space within the viewport of the widget (not including padding, and excluding margins, borders or scrollbars) rendered at its specified size.
    `int` | `getInnerContentWidth()` Returns the amount of space available for interior content (or relatively positioned child widget(s)) without introducing clipping, scrolling or overflow. This is the space within the viewport of the widget (not including padding, and excluding margins, borders or scrollbars) rendered at its specified size.
    `int` | `getInnerHeight()` Returns the amount of space available for (an) absolutely positioned child widget(s) or absolutely positioned HTML content, without introducing clipping, scrolling or overflow.
    `int` | `getInnerWidth()` Returns the amount of space available for absolutely positioned child widget(s) or absolutely positioned HTML content, without introducing clipping, scrolling or overflow.
    `boolean` | `getIsGroup()` Should a grouping frame be shown around this canvas.
    `java.lang.Boolean` | `getIsPrinting()` This boolean flag will be set to true by framework logic while generating print HTML for this widget as a result to a call to `showPrintPreview()` (or just `getPrintHTML()`).
    `java.lang.Boolean` | `getIsSnapAlignCandidate()` Flag to disable snapping to alignment against this Canvas when other Canvases dragged into the same parent when `childrenSnapAlign` is enabled on this Canvas' parent.
    `java.lang.Boolean` | `getKeepInParentRect()` Constrains drag-resizing and drag-repositioning of this canvas to either the rect of its parent (if set to true) or an arbitrary rect based its parent (if set to a [Left,Top,Width,Height] rect array).
    `Alignment` | `getLayoutAlign()` When this Canvas is included as a member in a Layout, layoutAlign controls alignment on the breadth axis of the layout.
    `java.lang.Integer` | `getLeavePageSpace()` If set, overrides the global `defaultPageSpace`.
    `int` | `getLeft()` Number of pixels the left side of the widget is offset to the right from its default drawing context (either its parent's topleft corner, or the document flow, depending on the value of the `position` property).
    `java.lang.String` | `getLeftAsString()` Number of pixels the left side of the widget is offset to the right from its default drawing context (either its parent's topleft corner, or the document flow, depending on the value of the `position` property).
    `LocatorStrategy` | `getLocateChildrenBy()` Strategy to use when locating children in this canvas from an autoTest locator string.
    `LocatorTypeStrategy` | `getLocateChildrenType()` `LocatorTypeStrategy` to use when finding children within this canvas.
    `LocatorStrategy` | `getLocatePeersBy()` Strategy to use when locating peers of this canvas from an autoTest locator string.
    `LocatorTypeStrategy` | `getLocatePeersType()` `LocatorTypeStrategy` to use when finding peers of this canvas.
    `com.smartgwt.logicalstructure.core.LogicalStructureObject` | `getLogicalStructure()` Getter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.
    `java.lang.Integer` | `getMargin()` Set the CSS Margin, in pixels, for this component.
    `Canvas` | `getMasterCanvas()` Returns this canvas's "master" (the canvas to which it was added as a peer), if any.
    `Canvas` | `getMasterElement()` Deprecated. In favor or `getMasterCanvas()` as of Smart GWT release 9.1
    `java.lang.Boolean` | `getMatchElement()` If `htmlElement` is specified, should this canvas initially be drawn at the same dimensions as the htmlElement? Note: setting this property will not force the canvas to resize if the element subsequently resizes (for example due to page reflow).
    `int` | `getMaxHeight()` Maximum height that this Canvas can be resized to.
    `int` | `getMaxWidth()` Maximum width that this Canvas can be resized to.
    `java.lang.String` | `getMenuConstructor()` Default class used to construct menus created by this component, including context menus.
    `int` | `getMinHeight()` Minimum height that this Canvas can be resized to by a user.
    `int` | `getMinNonEdgeSize()` If the widget has drag resize configured on one or more of it's edges, and the edgeMarginSize is large enough that the remaining space is less than `minNonEdgeSize`, the edgeMarginSize will be reduced such that the non-edge part of the widget is at least 1/3 of the total space (with two draggable edges) or half of it (with one draggable edge).
    `int` | `getMinWidth()` Minimum width that this Canvas can be resized to.
    `double` | `getMomentumScrollMinSpeed()` The minimum speed in pixels per second that must be reached for momentum scrolling to kick in.
    `int` | `getMouseStillDownDelay()` Amount of time (in milliseconds) between repeated 'mouseStillDown' events for this canvas.
    `int` | `getMouseStillDownInitialDelay()` Amount of time (in milliseconds) before mouseStillDown events start to be fired repeatedly for this canvas.
    `int` | `getNextZIndex()` get the next zIndex for the next item to be drawn.
    `java.lang.Boolean` | `getNoDoubleClicks()` If true, this canvas will receive all mouse-clicks as single `click` events rather than as `doubleClick` events.
    `Cursor` | `getNoDropCursor()` Specifies the cursor image to display when the user drags a droppable canvas over this if it is not a valid drop target for the event and `showNoDropIndicator` is true.
    `int` | `getOffsetHeight()`
    `int` | `getOffsetWidth()`
    `int` | `getOffsetX()` Return the X-coordinate of the last event relative to the left edge of the content of this Canvas. NOTE: To get a coordinate relative to the viewport of this Canvas, subtract this.getScrollLeft()
    `int` | `getOffsetY()` Return the Y-coordinate of the last event, relative to the top edge of the content of this Canvas. NOTE: To get a coordinate relative to the viewport of this Canvas, subtract this.getScrollTop()
    `java.lang.Integer` | `getOpacity()` Renders the widget to be partly transparent.
    `static Canvas` | `getOrCreateRef(com.google.gwt.core.client.JavaScriptObject jsObj)`
    `com.google.gwt.user.client.Element` | `getOuterElement()` Returns the outer DOM element of this Canvas.
    `Overflow` | `getOverflow()` Controls what happens when the drawn size of the content of a Canvas is either greater or smaller than the specified size of the Canvas.
    `java.lang.Integer` | `getPadding()` Set the CSS padding of this component, in pixels.
    `int` | `getPageBottom()` Return the page-relative bottom coordinate of this object, in pixels.
    `int` | `getPageLeft()` Returns the page-relative left coordinate of the widget on the page, in pixels.
    `Rectangle` | `getPageRect()`
    `int` | `getPageRight()` Return the page-relative right coordinate of this object, in pixels.
    `int` | `getPageTop()` Returns the page-relative top coordinate of the widget on the page, in pixels
    `Canvas` | `getPanelContainer()` Returns this Canvas's "panel container".
    `Canvas` | `getParentCanvas()` This Canvas's immediate parent, if any.
    `Canvas` | `getParentElement()` Deprecated. As of Smartclient version 9.1, deprecated in favor of `parentCanvas` and `getParentCanvas()`
    `Canvas[]` | `getPeers()` Array of all Canvii that are peers of this Canvas.
    `PercentBoxModel` | `getPercentBox()` Governs the model to be used when sizing canvases with percentage width or height, or positioning widgets with a specified `snapTo`.
    `Canvas` | `getPercentSource()` If this canvas has its size specified as a percentage, this property allows the user to explicitly designate another canvas upon which sizing will be based.
    `Positioning` | `getPosition()` Absolute or relative, corresponding to the "absolute" (with respect to parent) or "relative" (with respect to document flow) values for the CSS position attribute.
    `java.lang.String` | `getPrefix()`
    `java.lang.Boolean` | `getPrintChildrenAbsolutelyPositioned()` Should this canvas print its children absolutely positioned when generating `printable HTML`.
    `static void` | `getPrintHTML(java.lang.Object[] components, PrintProperties printProperties, PrintHTMLCallback callback)` Returns print-formatted HTML for the specified list of components.
    `java.lang.String` | `getPrintHTML(PrintProperties printProperties, PrintHTMLCallback callback)` Retrieves printable HTML for this component and all printable subcomponents.
    `java.lang.String` | `getPrompt()` Prompt displayed in hover canvas if `showHover` is true.
    `java.lang.String[]` | `getProportionalResizeModifiers()` If `proportionalResizing` is set to `ProportionalResizeMode.MODIFIER` or `ProportionalResizeMode.MODIFIER_OFF` then proportional resizing of the DrawItem is activated or deactivated, respectively, whenever at least one key in this set of modifier keys is pressed.
    `ProportionalResizeMode` | `getProportionalResizing()` If `canDragResize` is true, this property specifies the conditions for when proportional resizing is used.
    `Rectangle` | `getRect()` Get all four coordinates, relative to the enclosing context, at one.
    `java.lang.Boolean` | `getRedrawOnResize()` Should this element be redrawn in response to a resize?
    `java.lang.String` | `getResizeBarTarget()` When this Canvas is included as a member in a Layout, and `showResizeBar` is set to `true` so that a resizeBar is created, `resizeBarTarget:"next"` can be set to indicate that the resizeBar should resize the next member of the layout rather than this one.
    `EdgeName[]` | `getResizeFrom()` When drag resizing is enabled via `canDragResize`, restricts resizes to only certain edges or corners.
    `int` | `getRight()` Return the right coordinate of this object as rendered, relative to its enclosing context, in pixels.
    `int` | `getScrollbarSize()` How thick should we make the scrollbars for this canvas.
    `int` | `getScrollBottom()` Returns the scrollTop required to scroll vertically to the end of this widget's content.
    `int` | `getScrollHeight()` Returns the scrollable height of the widget's contents, including children, ignoring clipping.
    `int` | `getScrollLeft()` Get the number of pixels this Canvas is scrolled from its left edge.
    `int` | `getScrollRight()` Returns the scrollLeft required to scroll horizontally to the end of this widget's content.
    `int` | `getScrollTop()` Get the number of pixels this Canvas is scrolled from its top edge.
    `int` | `getScrollWidth()` Returns the scrollable width of the widget's contents, including children, ignoring clipping.
    `int` | `getShadowDepth()` Depth of the shadow, or the virtual height above the page of the widget throwing the shadow.
    `java.lang.String` | `getShadowImage()` Base name of the series of images for the sides, corners, and center of the shadow.
    `java.lang.Integer` | `getShadowOffset()` Offset of the shadow.
    `java.lang.Integer` | `getShadowSoftness()` Softness, or degree of blurring, of the shadow.
    `java.lang.Boolean` | `getShouldPrint()` Whether this canvas should be included in a printable view.
    `boolean` | `getShowCustomScrollbars()` Whether to use the browser's native scrollbars or Smart GWT-based scrollbars.
    `java.lang.Boolean` | `getShowDragShadow()` When this widget is dragged, if its dragAppearance is `"target"`, should we show a shadow behind the canvas during the drag.
    `java.lang.Boolean` | `getShowEdges()` Whether an `EdgedCanvas` should be used to show image-based edges around this component.
    `java.lang.Boolean` | `getShowHover()` If `this.canHover` is true, should we show the global hover canvas by default when the user hovers over this canvas?
    `java.lang.Boolean` | `getShowHoverComponents()` When set to true, shows a widget hovering at the mouse point instead of the builtin hover label.
    `java.lang.Boolean` | `getShowResizeBar()` When this Canvas is included as a member in a `Layout`, whether a resizeBar should be shown after this member in the layout, to allow it to be resized.
    `java.lang.Boolean` | `getShowShadow()` Whether to show a drop shadow for this Canvas.
    `java.lang.Boolean` | `getShowSnapGrid()` Whether to show a snap grid for this Canvas.
    `boolean` | `getShrinkElementOnHide()` This is an advanced setting.
    `java.lang.String` | `getSkinImgDir()` Default directory for skin images (those defined by the class), relative to the Page-wide `skinDir`.
    `Canvas[]` | `getSnapAlignCandidates()` When `childrenSnapAlign` is enabled, list of candidates to check for alignment.
    `java.lang.String` | `getSnapAlignCenterLineStyle()` CSS border declaration used for the line shown to indicate snapping to a center line when `childrenSnapAlign` is set.
    `java.lang.String` | `getSnapAlignEdgeLineStyle()` CSS border declaration used for the line shown to indicate snapping to a edge line when `childrenSnapAlign` is set.
    `java.lang.String` | `getSnapAxis()` Describes which axes to apply snap-to-grid to.
    `java.lang.String` | `getSnapEdge()` If `snapTo` is defined to this widget, this property can be used to define which edge of this widget should be snapped to an edge of the master or parent element.
    `java.lang.String` | `getSnapHDirection()` The horizontal snap direction.
    `int` | `getSnapHGap()` The horizontal grid size to use, in pixels, when snap-to-grid is enabled.
    `java.lang.Integer` | `getSnapOffsetLeft()` If `snapTo` is defined for this widget, this property can be used to specify an offset in px or percentage for the left coordinate of this widget.
    `java.lang.Integer` | `getSnapOffsetTop()` If `snapTo` is defined for this widget, this property can be used to specify an offset in px or percentage for the top coordinate of this widget.
    `java.lang.Boolean` | `getSnapOnDrop()` When this canvas is dropped onto an object supporting snap-to-grid, should it snap to the grid (true, the default) or just drop wherever the mouse is (false).
    `static Point` | `getSnapPosition(Canvas target, java.lang.String snapTo, Canvas snapper)` Return the position for `snapper` to be placed in order to "snap to" an edge or corner of `target`, in the same sense as `snapTo`.
    `static Point` | `getSnapPosition(Canvas target, java.lang.String snapTo, Canvas snapper, java.lang.String snapEdge)` Return the position for `snapper` to be placed in order to "snap to" an edge or corner of `target`, in the same sense as `snapTo`.
    `java.lang.Boolean` | `getSnapResizeToAlign()` Flag to disable snapping to alignment when this Canvas is resized.
    `java.lang.Boolean` | `getSnapResizeToGrid()` Causes this canvas to snap to its parent's grid when resizing.
    `java.lang.String` | `getSnapTo()` Position this widget such that it is aligned with ("snapped to") an edge of its `master` (if specified), or its `parent canvas`.
    `java.lang.Boolean` | `getSnapToAlign()` Flag to disable snapping to alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
    `java.lang.Boolean` | `getSnapToCenterAlign()` Flag to disable snapping to center alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
    `java.lang.Boolean` | `getSnapToEdgeAlign()` Flag to disable snapping to edge alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
    `java.lang.Boolean` | `getSnapToGrid()` Causes this canvas to snap to its parent's grid when dragging.
    `java.lang.String` | `getSnapVDirection()` The vertical snap direction.
    `int` | `getSnapVGap()` The vertical grid size to use, in pixels, when snap-to-grid is enabled.
    `java.lang.String` | `getStyleName()` The CSS class applied to this widget as a whole.
    `java.lang.Integer` | `getTabIndex()` If specified this governs the tabIndex of the widget in the page's tab order.
    `protected Canvas` | `getTestInstance()`
    `java.lang.String` | `getTitle()` Synonym for `getPrompt()`
    `java.lang.String` | `getTooltip()` Synonym for `getPrompt()`
    `int` | `getTop()` Number of pixels the top of the widget is offset down from its default drawing context (either its parent's top-left corner, or the document flow, depending on the value of the `position` property).
    `java.lang.String` | `getTopAsString()` Number of pixels the top of the widget is offset down from its default drawing context (either its parent's top-left corner, or the document flow, depending on the value of the `position` property).
    `Canvas` | `getTopElement()` The top-most Canvas (i.e., not a child of any other Canvas), if any, in this widget's containment hierarchy.
    `java.lang.Boolean` | `getUseBackMask()` In earlier versions of Internet Explorer (pre IE9), a native limitation exists whereby if HTML elements are overlapping on the page, certain elements can appear to "burn through" elements in the same position with a higher z-index.
    `boolean` | `getUseDragMask()` This flag controls whether we register the component as a maskable item with the EventHandler.
    `java.lang.Boolean` | `getUseNativeDrag()` If set, native HTML5 drag and drop will be used for all drags initiated on this widget (on browsers where this is supported).
    `java.lang.Boolean` | `getUseOpacityFilter()` Configures where the Opacity filter is used for IE6-8.
    `java.lang.Boolean` | `getUseTouchScrolling()` On `touch devices`, if this `Canvas` can be scrolled, should touch-dragging the content area result in scrolling? Set to `false` if touch-dragging should not cause scrolling.
    `ValuesManager` | `getValuesManager()` `ValuesManager` for managing values displayed in this component.
    `int` | `getViewportHeight()` Returns the height of the viewport onto the scrollable content.
    `int` | `getViewportWidth()` Returns the width of the viewport onto the scrollable content.
    `Visibility` | `getVisibility()` Controls widget visibility when the widget is initialized.
    `int` | `getVisibleHeight()` Return the visible height of the Canvas.
    `int` | `getVisibleWidth()` Return the visible width of the Canvas.
    `int` | `getVSnapOrigin()` Get an offset to be used when calculating snap positioning.
    `int` | `getVSnapOrigin(Canvas snapChild)` Get an offset to be used when calculating snap positioning.
    `int` | `getVSnapPosition(int coordinate)` Override this method to provide a custom snap-to grid.
    `int` | `getVSnapPosition(int coordinate, java.lang.String direction)` Override this method to provide a custom snap-to grid.
    `java.lang.Integer` | `getWidth()` Size for this component's horizontal dimension.
    `java.lang.String` | `getWidthAsString()`
    `int` | `getZIndex()` Get the z-Index of this canvas.
    `int` | `getZIndex(boolean resolveToNumber)` Get the z-Index of this canvas.
    `void` | `handleHover()` Handler fired on a delay when the user hovers the mouse over this hover-target.
    `void` | `hide()` Sets the widget's CSS visibility attribute to "hidden".
    `void` | `hideClickMask()` Hides the click mask associated with this canvas.
    `void` | `hideClickMask(java.lang.String ID)` Hides the click mask associated with this canvas.
    `void` | `hideComponentMask()` Hide the `component level clickMask` for this widget
    `void` | `hideComponentMask(boolean suppressFocusReset)` Hide the `component level clickMask` for this widget
    `void` | `hideContextMenu()` The default implementation of this method hides the contextMenu currently being shown for this component (which occurs when the mouse button that toggles the context menu is released).
    `static java.lang.String` | `imgHTML(java.lang.String src)` Generates the HTML for an image unique to this Canvas.
    `static java.lang.String` | `imgHTML(java.lang.String src, int width, int height)`
    `static java.lang.String` | `imgHTML(java.lang.String src, int width, int height, java.lang.String name, java.lang.String extraStuff, java.lang.String imgDir)` Generates the HTML for an image unique to this Canvas.
    `java.lang.Boolean` | `intersects(Canvas other)` Returns true if the rectangles of this widget and the specified widget overlap.
    `java.lang.Boolean` | `isDirty()` Returns whether a canvas is waiting to be redrawn.
    `java.lang.Boolean` | `isDisabled()` Is this canvas disabled? Note that the disabled state is inherited - this method will return true if this widget, or any of its ancestors are marked disabled.
    `java.lang.Boolean` | `isDrawn()` Returns the boolean true, if the widget has been completely drawn, and false otherwise.
    `java.lang.Boolean` | `isFocused()` Returns true if this Canvas has the keyboard focus.
    `boolean` | `isVisible()` Returns true if the widget is visible, taking all parents into account, so that a widget which is not hidden might still report itself as not visible if it is within a hidden parent.
    `java.lang.Boolean` | `keyUp()` Executed when a key is released on a focusable widget (`canFocus`: true).
    `void` | `layoutChildren(java.lang.String reason)` `layoutChildren()` is where a Canvas should implement a sizing policy for it's Canvas children.
    `java.lang.String` | `linkHTML(java.lang.String href)` Generates the HTML for a standard link (anchor) element.
    `java.lang.String` | `linkHTML(java.lang.String href, java.lang.String text)`
    `java.lang.String` | `linkHTML(java.lang.String href, java.lang.String text, java.lang.String target)`
    `java.lang.String` | `linkHTML(java.lang.String href, java.lang.String text, java.lang.String target, java.lang.String ID)`
    `java.lang.String` | `linkHTML(java.lang.String href, java.lang.String text, java.lang.String target, java.lang.String ID, java.lang.Integer tabIndex)`
    `java.lang.String` | `linkHTML(java.lang.String href, java.lang.String text, java.lang.String target, java.lang.String ID, java.lang.Integer tabIndex, java.lang.String accessKey)` Generates the HTML for a standard link (anchor) element.
    `void` | `markForDestroy()` `destroy()` this canvas on a timeout.
    `void` | `markForRedraw()` Marks the widget as "dirty" so that it will be added to a queue for redraw.
    `void` | `markForRedraw(java.lang.String reason)` Marks the widget as "dirty" so that it will be added to a queue for redraw.
    `void` | `moveAbove(Canvas canvas)` Puts this widget just above the specified widget in the stacking order, so it appears in front of the specified widget if both widgets have the same parent.
    `void` | `moveBelow(Canvas canvas)` Puts this widget just below the specified widget in the stacking order, so it appears behind the specified widget if both widgets have the same parent.
    `java.lang.Boolean` | `moveBy(int deltaX, int deltaY)` Moves the widget deltaX pixels to the right and deltaY pixels down.
    `boolean` | `moveTo(int left, int top)` Moves the widget so that its top-left corner is at the specified coordinates.
    `protected void` | `onAttach()`
    `protected void` | `onDetach()`
    `protected void` | `onInit()`
    `void` | `pageScrollDown()` This method is the programmatic equivalent of the user pressing the "Page Down" key while this widget has the focus.
    `void` | `pageScrollUp()` This method is the programmatic equivalent of the user pressing the "Page Up" key while this widget has the focus.
    `protected void` | `parentResized()` Fires when the interior size of the parent changes, including parent resize and scrollbar introduction or removal.
    `void` | `placeNear()` Move this canvas to the specified point, or as close to the specified point as possible without this widget extending beyond the edge of the browser viewport on any side.
    `void` | `placeNear(int left)`
    `void` | `placeNear(int left, int top)` Move this canvas to the specified point, or as close to the specified point as possible without this widget extending beyond the edge of the browser viewport on any side.
    `static void` | `printComponents(java.lang.Object[] components)` Generate printable HTML for the designated components and trigger the native print dialog, without ever showing the printable HTML to the user.
    `void` | `provideRuleContext(java.lang.String dataPath, java.lang.Object data)`
    `void` | `redraw()` Redraws the widget immediately with its current property values.
    `void` | `redraw(java.lang.String reason)` Redraws the widget immediately with its current property values.
    `void` | `removeChild(Canvas child)` Remove a child from this parent.
    `void` | `removeChild(Canvas child, java.lang.String name)` Remove a child from this parent.
    `void` | `removePeer(Canvas peer)` Remove a peer from this Canvas
    `void` | `removePeer(Canvas peer, java.lang.String name)` Remove a peer from this Canvas
    `void` | `removeSnapAlignCandidate(Canvas candidate)` Remove a candidate from `snapAlignCandidates`.
    `java.lang.Boolean` | `resizeBy(int deltaX, int deltaY)` Resizes the widget, adding deltaX to its width and deltaY to its height (moves the right and/or bottom sides of the widget).
    `java.lang.Boolean` | `resizeTo(int width, int height)` Resizes the widget to the specified width and height (moves the right and/ or bottom sides of the widget).
    `java.lang.Boolean` | `resizeTo(java.lang.String width, java.lang.String height)` Resizes the widget to the specified width and height (moves the right and/ or bottom sides of the widget).
    `void` | `revealChild(Canvas child)` For "panel container" widgets like `TabSet` or `SectionStack`, this method reveals the child Canvas passed in by whatever means is applicable for the particular type of container.
    `void` | `revealChild(java.lang.String child)` For "panel container" widgets like `TabSet` or `SectionStack`, this method reveals the child Canvas passed in by whatever means is applicable for the particular type of container.
    `void` | `scrollBy(int dX, int dY)` Scroll this widget by some pixel increment in either (or both) direction(s).
    `void` | `scrollByPercent(int dX, int dY)` Scroll this widget by some percentage of scroll size in either (or both) direction(s).
    `void` | `scrollTo()` Scrolls the content of the widget so that the origin (top-left corner) of the content is left pixels to the left and top pixels above the widget's top-left corner (but still clipped by the widget's dimensions).
    `void` | `scrollTo(java.lang.Integer left)`
    `void` | `scrollTo(java.lang.Integer left, java.lang.Integer top)` Scrolls the content of the widget so that the origin (top-left corner) of the content is left pixels to the left and top pixels above the widget's top-left corner (but still clipped by the widget's dimensions).
    `void` | `scrollToBottom()` Vertically scrolls the content of the widget to the end of its content
    `void` | `scrollToLeft()` Horizontally scrolls the content of the widget to 0
    `void` | `scrollToPercent(int left, int top)` Scroll this widget to some position specified as a percentage of scroll size in either (or both) direction(s).
    `void` | `scrollToRight()` Horizontally scrolls the content of the widget to the end of its content
    `void` | `scrollToTop()` Vertically scrolls the content of the widget to 0
    `void` | `sendToBack()` Puts this widget at the bottom of the stacking order, so it appears behind all other widgets in the same parent.
    `void` | `setAccessKey(java.lang.String accessKey)` If specified this governs the HTML accessKey for the widget.
    `void` | `setAlign(Alignment align)`
    `static void` | `setAllowExternalFilters(boolean allExternalFilters)` Changes the system-wide `allowExternalFilters` setting.
    `void` | `setAlwaysShowScrollbars(java.lang.Boolean alwaysShowScrollbars)` On `touch devices` that support native touch scrolling, if `showCustomScrollbars` is `true` and touch scrolling has not been disabled by the `useTouchScrolling` and/or `disableTouchScrollingForDrag` settings, should custom scrollbars and native touch scrolling be enabled for this component? If `false` or unset, then only native touch scrolling will be enabled.
    `void` | `setAnimateAcceleration(AnimationAcceleration animateAcceleration)` Default acceleration effect to apply to all animations on this Canvas.
    `void` | `setAnimateFadeTime(java.lang.Integer animateFadeTime)` Default time for performing an animated fade.
    `void` | `setAnimateHideAcceleration(AnimationAcceleration animateHideAcceleration)` Default acceleration function for performing an animated hide.
    `void` | `setAnimateHideTime(java.lang.Integer animateHideTime)` Default time for performing an animated hide.
    `void` | `setAnimateMoveAcceleration(AnimationAcceleration animateMoveAcceleration)` Default acceleration effect for performing an animated move.
    `void` | `setAnimateMoveTime(java.lang.Integer animateMoveTime)` Default time for performing an animated move.
    `void` | `setAnimateRectAcceleration(AnimationAcceleration animateRectAcceleration)` Default acceleration function for performing an animated move and resize.
    `void` | `setAnimateRectTime(java.lang.Integer animateRectTime)` Default time for performing an animated setRect.
    `void` | `setAnimateResizeAcceleration(AnimationAcceleration animateResizeAcceleration)` Default acceleration function for performing an animated resize.
    `void` | `setAnimateResizeTime(java.lang.Integer animateResizeTime)` Default time for performing an animated resize.
    `void` | `setAnimateScrollAcceleration(AnimationAcceleration animateScrollAcceleration)` Default acceleration function for performing an animated scroll.
    `void` | `setAnimateScrollTime(java.lang.Integer animateScrollTime)` Default time for performing an animated scroll.
    `void` | `setAnimateShowAcceleration(AnimationAcceleration animateShowAcceleration)` Default acceleration function for performing an animated show.
    `void` | `setAnimateShowEffect(AnimationEffect animateShowEffect)` Default animation effect to use if `Canvas#animateShow()` is called without an explicit effect parameter.
    `void` | `setAnimateShowTime(java.lang.Integer animateShowTime)` Default time for performing an animated show.
    `void` | `setAnimateTime(int animateTime)` Default total duration of animations.
    `void` | `setAppImgDir(java.lang.String appImgDir)` Default directory for app-specific images, relative to the Page-wide `appImgDir`.
    `void` | `setAriaRole(java.lang.String ariaRole)` ARIA role of this component.
    `void` | `setAriaState(java.lang.String stateName, java.lang.Object stateValue)` Set a specific ARIA state mapping for this component.
    `void` | `setAutoChildConstructor(java.lang.String autoChildName, java.lang.String className)` Sets the SmartClient constructor for the AutoChild named `autoChildName`.
    `void` | `setAutoChildProperties(java.lang.String autoChildName, Canvas properties)` Sets the properties for creating a `Canvas` AutoChild named `autoChildName`.
    `void` | `setAutoChildProperties(java.lang.String autoChildName, EditContext properties)` Sets the properties for creating an AutoChild named `autoChildName`.
    `void` | `setAutoChildProperties(java.lang.String autoChildName, EditProxy properties)` Sets the properties for creating an AutoChild named `autoChildName`.
    `void` | `setAutoChildProperties(java.lang.String autoChildName, FormItem properties)` Sets the properties for creating a `FormItem` AutoChild named `autoChildName`.
    `void` | `setAutoChildVisibility(java.lang.String autoChildName, boolean visible)` Sets whether to create and show the AutoChild named `autoChildName`.
    `void` | `setAutoDraw(java.lang.Boolean autoDraw)` If true, this canvas will draw itself immediately after it is created.
    `void` | `setAutoHeight()` Set the minimum value for height.
    `void` | `setAutoMaskComponents(java.lang.Boolean autoMaskComponents)` Deprecated. As of Smart GWT version 10.0, deprecated in favor of `EditProxy.autoMaskChildren`
    `void` | `setAutoShowParent(java.lang.Boolean autoShowParent)` If set to true, the widget's parent (if any) will automatically be shown whenever the widget is shown.
    `void` | `setAutoWidth()` Set the minimum value for width.
    `void` | `setBackgroundColor(java.lang.String backgroundColor)` The background color for this widget.
    `void` | `setBackgroundImage(java.lang.String backgroundImage)` URL for a background image for this widget (corresponding to the CSS "background-image" attribute).
    `void` | `setBackgroundPosition(java.lang.String backgroundPosition)` Specifies how the background image should be positioned on the widget.
    `void` | `setBackgroundRepeat(BackgroundRepeat backgroundRepeat)` Specifies how the background image should be tiled if this widget is larger than the image.
    `void` | `setBorder(java.lang.String border)` Set the CSS border of this component, as a CSS string including border-width, border-style, and/or color (eg "2px solid blue").
    `void` | `setBottom(int bottom)` Resizes the widget vertically to position its bottom edge at the specified coordinate.
    `void` | `setCanAcceptDrop(java.lang.Boolean canAcceptDrop)` Indicates that this object can receive dropped widgets (i.e.
    `void` | `setCanDrag(java.lang.Boolean canDrag)` Indicates whether this widget can initiate custom drag-and-drop operations (other than reposition or resize).
    `void` | `setCanDragReposition(java.lang.Boolean canDragReposition)` Indicates whether this widget can be moved by a user of your application by simply dragging with the mouse.
    `void` | `setCanDragResize(java.lang.Boolean canDragResize)` Indicates whether this widget can be resized by dragging on the edges and/or corners of the widget with the mouse.
    `void` | `setCanDragScroll(boolean canDragScroll)` If this Canvas is canAcceptDrop:true, when the user drags a droppable widget over an edge of the widget, should we scroll to show the rest of the widget's content? Returned from canvas.shouldDragScroll() if there are scrollbars.
    `void` | `setCanDrop(java.lang.Boolean canDrop)` Indicates that this object can be dropped on top of other widgets.
    `void` | `setCanDropBefore(java.lang.Boolean canDropBefore)` When explicitly set to false, disallows drop before this member in the Layout.
    `void` | `setCanFocus(java.lang.Boolean canFocus)` Can this widget be allowed to become the target of keyboard events?
    `void` | `setCanHover(java.lang.Boolean canHover)` Will this Canvas fire hover events when the user hovers over it, or one of its children?
    `void` | `setCanSelectText(java.lang.Boolean canSelectText)` Whether native drag selection of contained text is allowed within this Canvas.
    `void` | `setChildren(Canvas... children)` Array of all Canvii that are immediate children of this Canvas.
    `void` | `setChildrenResizeSnapAlign(java.lang.Boolean childrenResizeSnapAlign)` Flag to disable snapping to alignment when children of this Canvas are resized
    `void` | `setChildrenSnapAlign(java.lang.Boolean childrenSnapAlign)` If enabled while `childrenSnapToGrid` is enabled, children dragged within this Canvas will also snap to positions where their edges or center lines would be aligned with the edges or centers of other components, and lines will be shown to point out the possible alignment (with appearance controlled by `snapAlignCenterLineStyle` and `snapAlignEdgeLineStyle` respectively.
    `void` | `setChildrenSnapCenterAlign(java.lang.Boolean childrenSnapCenterAlign)` See `childrenSnapAlign`.
    `void` | `setChildrenSnapEdgeAlign(java.lang.Boolean childrenSnapEdgeAlign)` See `childrenSnapAlign`.
    `void` | `setChildrenSnapResizeToGrid(java.lang.Boolean childrenSnapResizeToGrid)` If true, causes this canvas's children to snap to its grid when resizing.
    `void` | `setChildrenSnapToGrid(java.lang.Boolean childrenSnapToGrid)` If true, causes this canvas's children to snap to its grid when dragging.
    `void` | `setComponentMaskDefaults(Canvas componentMaskDefaults)` Defaults for the `componentMask` autoChild.
    `void` | `setContents(java.lang.String contents)` The contents of a canvas or label widget.
    `void` | `setContextMenu(Menu contextMenu)` Context menu to show for this object, an instance of the Menu widget.
    `void` | `setCursor(Cursor cursor)` Specifies the cursor image to display when the mouse pointer is over this widget.
    `void` | `setDataPath(java.lang.String dataPath)` A dataPath may be specified on any canvas.
    `void` | `setDefaultHeight(int defaultHeight)` For custom components, establishes a default height for the component.
    `static void` | `setDefaultPageSpace(int newDefaultPageSpace)` Changes the global `defaultPageSpace`.
    `static void` | `setDefaultProperties(Canvas canvasProperties)` Class level method to set the default properties of this class.
    `void` | `setDefaultWidth(int defaultWidth)` For custom components, establishes a default width for the component.
    `void` | `setDisabled(boolean disabled)` If set to true, the widget will be disabled.
    `void` | `setDisabledCursor(Cursor disabledCursor)` Specifies the cursor image to display when the mouse pointer is over this widget if this widget is disabled.
    `void` | `setDisableTouchScrollingForDrag(java.lang.Boolean disableTouchScrollingForDrag)` Disables `useTouchScrolling` whenever a built-in drag operation has been enabled which is known to be non-functional if touch scrolling is enabled.
    `void` | `setDoubleClickDelay(int doubleClickDelay)` Amount of time (in milliseconds) between which two clicks are considered a single click
    `void` | `setDragAppearance(DragAppearance dragAppearance)` Visual appearance to show when the object is being dragged.
    `void` | `setDragIntersectStyle(DragIntersectStyle dragIntersectStyle)` This indicates how the system will test for droppable targets: either by intersection with the mouse or intersection with the rectangle of the dragMoveTarget.
    `void` | `setDragMaskType(DragMaskType dragMaskType)` This property controls what kind of mask is used in case `useDragMask` is enabled.
    `void` | `setDragOpacity(java.lang.Integer dragOpacity)` If this widget has dragAppearance `"target"`, this value specifies the opacity to render the target while it is being dragged.
    `void` | `setDragRepositionAppearance(DragAppearance dragRepositionAppearance)` If `canDragReposition` is true, this attributes specifies the visual appearance to show during drag reposition.
    `void` | `setDragRepositionCursor(Cursor dragRepositionCursor)` Cursor to switch to if the mouse is over a widget that is drag repositionable.
    `void` | `setDragResizeAppearance(DragAppearance dragResizeAppearance)` If `canDragResize` is true, this attributes specifies the visual appearance to show during drag resize.
    `void` | `setDragScrollDelay(int dragScrollDelay)` If this widget supports drag-scrolling, This property specifies how many ms the user must hover over the drag-scroll threshold before scrolling begins.
    `void` | `setDragStartDistance(int dragStartDistance)` Number of pixels the cursor needs to move before the EventHandler starts a drag operation.
    `void` | `setDragTarget(Canvas dragTarget)` A different widget that should be actually dragged when dragging initiates on this widget.
    `void` | `setDragType(java.lang.String dragType)` Sets a `dragType` for this widget used, to be compared to `dropTypes` on possible drop target widgets.
    `void` | `setDropTypes(java.lang.String... dropTypes)` When a drag and drop interaction occurs, if a `dragType` is configured on the source widget, it is compared to the `dropTypes` configured on the target widget, and a drop is only allowed if the `dragType` is listed in the target widget's `dropTypes` array.
    `void` | `setDropTypes(java.lang.String dropTypes)` When a drag and drop interaction occurs, if a `dragType` is configured on the source widget, it is compared to the `dropTypes` configured on the target widget, and a drop is only allowed if the `dragType` is listed in the target widget's `dropTypes` array.
    `void` | `setDynamicContents(java.lang.Boolean dynamicContents)` Dynamic contents allows the contents string to be treated as a simple, but powerful template.
    `void` | `setEdgeBackgroundColor(java.lang.String edgeBackgroundColor)` Background color for the EdgedCanvas created to decorate this component.
    `void` | `setEdgeCenterBackgroundColor(java.lang.String edgeCenterBackgroundColor)` Background color for the center section only.
    `void` | `setEdgeImage(java.lang.String edgeImage)` Base name of images for edges.
    `void` | `setEdgeMarginSize(int edgeMarginSize)` How far into the edge of an object do we consider the "edge" for drag resize purposes?
    `void` | `setEdgeOffset(java.lang.Integer edgeOffset)` Amount the contained Canvas should be offset.
    `void` | `setEdgeOpacity(java.lang.Integer edgeOpacity)` Opacity of the edges.
    `void` | `setEdgeShowCenter(java.lang.Boolean edgeShowCenter)` Whether to show media in the center section, that is, behind the decorated Canvas.
    `void` | `setEdgeSize(int edgeSize)` Size in pixels for corners and edges
    `void` | `setEditMode(boolean editingOn)` Enable or disable edit mode for this component.
    `void` | `setEditMode(boolean editingOn, EditContext editContext)`
    `void` | `setEditMode(boolean editingOn, EditContext editContext, EditNode editNode)` Enable or disable edit mode for this component.
    `void` | `setEditProxyConstructor(java.lang.String editProxyConstructor)` Default class used to construct the `EditProxy` for this component when the component is `first placed into edit mode`.
    `protected void` | `setElement(com.google.gwt.user.client.Element elem)` Normal usage of SmartGWT is to call draw() on SmartGWT widgets, not to use use RootPanel.add().
    `void` | `setExtraSpace(int extraSpace)` When this Canvas is included as a member in a Layout, extra blank space that should be left after this member in a Layout.
    `void` | `setFacetId(java.lang.String facetId)` If a Canvas is dropped onto a `CubeGrid`, and it has a facetId property specified then the Cube treats this as adding that facetId at the drop location.
    `void` | `setGroupBorderCSS(java.lang.String groupBorderCSS)` Sets the style for the grouping frame around the canvas.
    `void` | `setGroupLabelBackgroundColor(java.lang.String groupLabelBackgroundColor)` If set, the background color of the grouping label.
    `void` | `setGroupLabelStyleName(java.lang.String groupLabelStyleName)` Sets the style for the grouping label.
    `void` | `setGroupTitle(java.lang.String groupTitle)` The title/label for the grouping.
    `void` | `setHeight(int height)`
    `void` | `setHeight(java.lang.Integer height)` Size for this component's vertical dimension.
    `void` | `setHeight(java.lang.String height)` Size for this component's vertical dimension.
    `void` | `setHeight100()` Convenience method that sets the height to 100%.
    `void` | `setHideUsingDisplayNone(boolean hideUsingDisplayNone)` When this widget is hidden (see `visibility` and `hide()`), should display:none be applied to the `outer element`?
    `void` | `setHoverAlign(Alignment hoverAlign)` If `this.showHover` is true, this property can be used to customize the alignment of content in the hover canvas.
    `void` | `setHoverAutoDestroy(java.lang.Boolean hoverAutoDestroy)` If `this.showHover` is true and `getHoverComponent()` is implemented, should the hoverCanvas returned from it be automatically destroyed when it is hidden?
    `void` | `setHoverDelay(int hoverDelay)` If `this.canHover` is true, how long should the mouse be kept over this widget before the hover event is fired
    `void` | `setHoverHeight(java.lang.Integer hoverHeight)` If `this.showHover` is true, this property can be used to customize the height of the hover canvas shown.
    `void` | `setHoverMoveWithMouse(java.lang.Boolean hoverMoveWithMouse)` If `this.showHover` is true, should this widget's hover canvas be moved with the mouse while visible?
    `void` | `setHoverOpacity(java.lang.Integer hoverOpacity)` If `this.showHover` is true, should the hover canvas be shown with opacity other than 100?
    `void` | `setHoverStyle(java.lang.String hoverStyle)` If `this.showHover` is true, this property can be used to specify the css style to apply to the hover canvas.
    `void` | `setHoverVAlign(VerticalAlignment hoverVAlign)` If `this.showHover` is true, this property can be used to customize the vertical alignment of content in the hover canvas.
    `void` | `setHoverWidth(java.lang.Integer hoverWidth)` If `this.showHover` is true, this property can be used to customize the width of the hover canvas shown.
    `void` | `setHoverWrap(java.lang.Boolean hoverWrap)` If `this.showHover` is true, this property can be used to customize the whether content in the hover canvas is displayed in a single line, or wraps.
    `void` | `setHtmlElement(com.google.gwt.user.client.Element htmlElement)` If specified as a pointer to an HTML element present in the DOM, this canvas will be rendered inside that element on `draw()`.
    `void` | `setHtmlPosition(DrawPosition htmlPosition)` If `htmlElement` is specified, this attribute specifies the position where the canvas should be inserted relative to the `htmlElement` in the DOM.
    `void` | `setImage(java.lang.String identifier, java.lang.String URL)` Set the URL of an image element by name.
    `void` | `setImage(java.lang.String identifier, java.lang.String URL, java.lang.String imgDir)` Set the URL of an image element by name.
    `void` | `setInitHandler(CanvasInitHandler initHandler)` Specify a notification method to fire when this Canvas is initialized in JavaScript.
    `void` | `setIsGroup(boolean isGroup)` Should a grouping frame be shown around this canvas.
    `void` | `setIsSnapAlignCandidate(java.lang.Boolean isSnapAlignCandidate)` Flag to disable snapping to alignment against this Canvas when other Canvases dragged into the same parent when `childrenSnapAlign` is enabled on this Canvas' parent.
    `void` | `setKeepInParentRect(java.lang.Boolean keepInParentRect)` Constrains drag-resizing and drag-repositioning of this canvas to either the rect of its parent (if set to true) or an arbitrary rect based its parent (if set to a [Left,Top,Width,Height] rect array).
    `void` | `setKeepInParentRect(java.lang.Integer... keepInParentRect)` Constrains drag-resizing and drag-repositioning of this canvas to either the rect of its parent (if set to true) or an arbitrary rect based its parent (if set to a [Left,Top,Width,Height] rect array).
    `void` | `setKeepInParentRect(Rectangle rectangle)`
    `void` | `setLayoutAlign(Alignment layoutAlign)` When this Canvas is included as a member in a Layout, layoutAlign controls alignment on the breadth axis of the layout.
    `void` | `setLayoutAlign(VerticalAlignment layoutAlign)` When this Canvas is included as a member in a Layout, layoutAlign controls alignment on the breadth axis of the layout.
    `void` | `setLeavePageSpace(java.lang.Integer leavePageSpace)` If set, overrides the global `defaultPageSpace`.
    `void` | `setLeft(int left)` Number of pixels the left side of the widget is offset to the right from its default drawing context (either its parent's topleft corner, or the document flow, depending on the value of the `position` property).
    `void` | `setLeft(java.lang.String left)` Number of pixels the left side of the widget is offset to the right from its default drawing context (either its parent's topleft corner, or the document flow, depending on the value of the `position` property).
    `void` | `setLocateChildrenBy(LocatorStrategy locateChildrenBy)` Strategy to use when locating children in this canvas from an autoTest locator string.
    `void` | `setLocateChildrenType(LocatorTypeStrategy locateChildrenType)` `LocatorTypeStrategy` to use when finding children within this canvas.
    `void` | `setLocatePeersBy(LocatorStrategy locatePeersBy)` Strategy to use when locating peers of this canvas from an autoTest locator string.
    `void` | `setLocatePeersType(LocatorTypeStrategy locatePeersType)` `LocatorTypeStrategy` to use when finding peers of this canvas.
    `com.smartgwt.logicalstructure.core.LogicalStructureObject` | `setLogicalStructure(com.smartgwt.logicalstructure.widgets.CanvasLogicalStructure s)` Setter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.
    `void` | `setMargin(java.lang.Integer margin)` Set the CSS Margin, in pixels, for this component.
    `void` | `setMatchElement(java.lang.Boolean matchElement)` If `htmlElement` is specified, should this canvas initially be drawn at the same dimensions as the htmlElement? Note: setting this property will not force the canvas to resize if the element subsequently resizes (for example due to page reflow).
    `void` | `setMaxHeight(int maxHeight)` Maximum height that this Canvas can be resized to.
    `void` | `setMaxWidth(int maxWidth)` Maximum width that this Canvas can be resized to.
    `void` | `setMenuConstructor(java.lang.String menuConstructor)` Default class used to construct menus created by this component, including context menus.
    `void` | `setMinHeight(int minHeight)` Minimum height that this Canvas can be resized to by a user.
    `void` | `setMinNonEdgeSize(int minNonEdgeSize)` If the widget has drag resize configured on one or more of it's edges, and the edgeMarginSize is large enough that the remaining space is less than `minNonEdgeSize`, the edgeMarginSize will be reduced such that the non-edge part of the widget is at least 1/3 of the total space (with two draggable edges) or half of it (with one draggable edge).
    `void` | `setMinWidth(int minWidth)` Minimum width that this Canvas can be resized to.
    `void` | `setMomentumScrollMinSpeed(double momentumScrollMinSpeed)` The minimum speed in pixels per second that must be reached for momentum scrolling to kick in.
    `void` | `setMouseStillDownDelay(int mouseStillDownDelay)` Amount of time (in milliseconds) between repeated 'mouseStillDown' events for this canvas.
    `void` | `setMouseStillDownInitialDelay(int mouseStillDownInitialDelay)` Amount of time (in milliseconds) before mouseStillDown events start to be fired repeatedly for this canvas.
    `static void` | `setNeverUseFilters(boolean neverUseFilters)` Changes the system-wide `neverUseFilters` setting.
    `void` | `setNoDoubleClicks(java.lang.Boolean noDoubleClicks)` If true, this canvas will receive all mouse-clicks as single `click` events rather than as `doubleClick` events.
    `void` | `setNoDropCursor(Cursor noDropCursor)` Specifies the cursor image to display when the user drags a droppable canvas over this if it is not a valid drop target for the event and `showNoDropIndicator` is true.
    `void` | `setOpacity(java.lang.Integer opacity)` Renders the widget to be partly transparent.
    `void` | `setOverflow(Overflow overflow)` Controls what happens when the drawn size of the content of a Canvas is either greater or smaller than the specified size of the Canvas.
    `void` | `setPadding(java.lang.Integer padding)` Set the CSS padding of this component, in pixels.
    `void` | `setPageLeft(int left)` Set the page-relative left coordinate of this widget.
    `void` | `setPageTop(int top)` Set the page-relative top coordinate of this widget.
    `void` | `setParentCanvas(Canvas parentCanvas)` This Canvas's immediate parent, if any.
    `void` | `setParentElement(Canvas parentElement)` Deprecated. As of Smartclient version 9.1, deprecated in favor of `parentCanvas` and `getParentCanvas()`
    `void` | `setPeers(Canvas... peers)` Array of all Canvii that are peers of this Canvas.
    `void` | `setPercentBox(PercentBoxModel percentBox)` Governs the model to be used when sizing canvases with percentage width or height, or positioning widgets with a specified `snapTo`.
    `void` | `setPercentSource(Canvas percentSource)` If this canvas has its size specified as a percentage, this property allows the user to explicitly designate another canvas upon which sizing will be based.
    `void` | `setPosition(Positioning position)` Absolute or relative, corresponding to the "absolute" (with respect to parent) or "relative" (with respect to document flow) values for the CSS position attribute.
    `void` | `setPrefix(java.lang.String prefix)`
    `void` | `setPrintChildrenAbsolutelyPositioned(java.lang.Boolean printChildrenAbsolutelyPositioned)` Should this canvas print its children absolutely positioned when generating `printable HTML`.
    `void` | `setPrompt(java.lang.String prompt)` Prompt displayed in hover canvas if `showHover` is true.
    `void` | `setProportionalResizeModifiers(java.lang.String... proportionalResizeModifiers)` If `proportionalResizing` is set to `ProportionalResizeMode.MODIFIER` or `ProportionalResizeMode.MODIFIER_OFF` then proportional resizing of the DrawItem is activated or deactivated, respectively, whenever at least one key in this set of modifier keys is pressed.
    `void` | `setProportionalResizing(ProportionalResizeMode proportionalResizing)` If `canDragResize` is true, this property specifies the conditions for when proportional resizing is used.
    `void` | `setRect(int left, int top, int width, int height)` Set all four coordinates, relative to the enclosing context, at once.
    `void` | `setRect(Rectangle rectangle)` Set all four coordinates, relative to the enclosing context, at once.
    `void` | `setRedrawOnResize(java.lang.Boolean redrawOnResize)` Should this element be redrawn in response to a resize?
    `void` | `setResizeBarTarget(java.lang.String resizeBarTarget)` When this Canvas is included as a member in a Layout, and `showResizeBar` is set to `true` so that a resizeBar is created, `resizeBarTarget:"next"` can be set to indicate that the resizeBar should resize the next member of the layout rather than this one.
    `void` | `setResizeFrom(EdgeName... resizeFrom)` When drag resizing is enabled via `canDragResize`, restricts resizes to only certain edges or corners.
    `void` | `setResizeFrom(java.lang.String... resizeFrom)` Deprecated. use `#setResizeFrom(EdgeName)` instead.
    `void` | `setRight(int right)` Resizes the widget horizontally to position its right side at the specified coordinate.
    `void` | `setScrollbarConstructor(java.lang.String scrollbarConstructor)` The class that will be used to create custom scrollbars for this component.
    `void` | `setScrollbarSize(int scrollbarSize)` How thick should we make the scrollbars for this canvas.
    `void` | `setShadowDepth(int shadowDepth)` Depth of the shadow, or the virtual height above the page of the widget throwing the shadow.
    `void` | `setShadowImage(java.lang.String shadowImage)` Base name of the series of images for the sides, corners, and center of the shadow.
    `void` | `setShadowOffset(java.lang.Integer shadowOffset)` Offset of the shadow.
    `void` | `setShadowSoftness(java.lang.Integer shadowSoftness)` Softness, or degree of blurring, of the shadow.
    `void` | `setShouldPrint(java.lang.Boolean shouldPrint)` Whether this canvas should be included in a printable view.
    `void` | `setShowCustomScrollbars(boolean showCustomScrollbars)` Whether to use the browser's native scrollbars or Smart GWT-based scrollbars.
    `void` | `setShowDragShadow(java.lang.Boolean showDragShadow)` When this widget is dragged, if its dragAppearance is `"target"`, should we show a shadow behind the canvas during the drag.
    `void` | `setShowEdges(java.lang.Boolean showEdges)` Whether an `EdgedCanvas` should be used to show image-based edges around this component.
    `void` | `setShowHover(java.lang.Boolean showHover)` If `this.canHover` is true, should we show the global hover canvas by default when the user hovers over this canvas?
    `void` | `setShowHoverComponents(java.lang.Boolean showHoverComponents)` When set to true, shows a widget hovering at the mouse point instead of the builtin hover label.
    `void` | `setShowResizeBar(java.lang.Boolean showResizeBar)` When this Canvas is included as a member in a `Layout`, whether a resizeBar should be shown after this member in the layout, to allow it to be resized.
    `void` | `setShowShadow(java.lang.Boolean showShadow)` Whether to show a drop shadow for this Canvas.
    `void` | `setShowSnapGrid(java.lang.Boolean showSnapGrid)` Whether to show a snap grid for this Canvas.
    `void` | `setShrinkElementOnHide(boolean shrinkElementOnHide)` This is an advanced setting.
    `void` | `setSkinImgDir(java.lang.String skinImgDir)` Default directory for skin images (those defined by the class), relative to the Page-wide `skinDir`.
    `void` | `setSmoothFade(java.lang.Boolean smoothFade)`
    `void` | `setSnapAlignCandidates(Canvas... snapAlignCandidates)` When `childrenSnapAlign` is enabled, list of candidates to check for alignment.
    `void` | `setSnapAlignCenterLineStyle(java.lang.String snapAlignCenterLineStyle)` CSS border declaration used for the line shown to indicate snapping to a center line when `childrenSnapAlign` is set.
    `void` | `setSnapAlignEdgeLineStyle(java.lang.String snapAlignEdgeLineStyle)` CSS border declaration used for the line shown to indicate snapping to a edge line when `childrenSnapAlign` is set.
    `void` | `setSnapAxis(java.lang.String snapAxis)` Describes which axes to apply snap-to-grid to.
    `void` | `setSnapEdge(java.lang.String snapEdge)` If `snapTo` is defined to this widget, this property can be used to define which edge of this widget should be snapped to an edge of the master or parent element.
    `void` | `setSnapHDirection(java.lang.String snapHDirection)` The horizontal snap direction.
    `void` | `setSnapHGap(int snapHGap)` The horizontal grid size to use, in pixels, when snap-to-grid is enabled.
    `void` | `setSnapOffsetLeft(java.lang.Integer snapOffsetLeft)` If `snapTo` is defined for this widget, this property can be used to specify an offset in px or percentage for the left coordinate of this widget.
    `void` | `setSnapOffsetTop(java.lang.Integer snapOffsetTop)` If `snapTo` is defined for this widget, this property can be used to specify an offset in px or percentage for the top coordinate of this widget.
    `void` | `setSnapOnDrop(java.lang.Boolean snapOnDrop)` When this canvas is dropped onto an object supporting snap-to-grid, should it snap to the grid (true, the default) or just drop wherever the mouse is (false).
    `void` | `setSnapResizeToAlign(java.lang.Boolean snapResizeToAlign)` Flag to disable snapping to alignment when this Canvas is resized.
    `void` | `setSnapResizeToGrid(java.lang.Boolean snapResizeToGrid)` Causes this canvas to snap to its parent's grid when resizing.
    `void` | `setSnapTo(java.lang.String snapTo)` Position this widget such that it is aligned with ("snapped to") an edge of its `master` (if specified), or its `parent canvas`.
    `void` | `setSnapToAlign(java.lang.Boolean snapToAlign)` Flag to disable snapping to alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
    `void` | `setSnapToCenterAlign(java.lang.Boolean snapToCenterAlign)` Flag to disable snapping to center alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
    `void` | `setSnapToEdgeAlign(java.lang.Boolean snapToEdgeAlign)` Flag to disable snapping to edge alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
    `void` | `setSnapToGrid(java.lang.Boolean snapToGrid)` Causes this canvas to snap to its parent's grid when dragging.
    `void` | `setSnapVDirection(java.lang.String snapVDirection)` The vertical snap direction.
    `void` | `setSnapVGap(int snapVGap)` The vertical grid size to use, in pixels, when snap-to-grid is enabled.
    `void` | `setStyleName(java.lang.String styleName)` The CSS class applied to this widget as a whole.
    `void` | `setTabIndex(java.lang.Integer tabIndex)` If specified this governs the tabIndex of the widget in the page's tab order.
    `void` | `setTitle(java.lang.String title)` Synonym for `setPrompt(String)`
    `void` | `setTooltip(java.lang.String tooltip)` Synonym for `setPrompt(String)`
    `void` | `setTop(int top)` Number of pixels the top of the widget is offset down from its default drawing context (either its parent's top-left corner, or the document flow, depending on the value of the `position` property).
    `void` | `setTop(java.lang.String top)` Number of pixels the top of the widget is offset down from its default drawing context (either its parent's top-left corner, or the document flow, depending on the value of the `position` property).
    `void` | `setUseBackMask(java.lang.Boolean useBackMask)` In earlier versions of Internet Explorer (pre IE9), a native limitation exists whereby if HTML elements are overlapping on the page, certain elements can appear to "burn through" elements in the same position with a higher z-index.
    `void` | `setUseDragMask(boolean useDragMask)` This flag controls whether we register the component as a maskable item with the EventHandler.
    `void` | `setUseNativeDrag(java.lang.Boolean useNativeDrag)` If set, native HTML5 drag and drop will be used for all drags initiated on this widget (on browsers where this is supported).
    `void` | `setUseOpacityFilter(java.lang.Boolean useOpacityFilter)` Configures where the Opacity filter is used for IE6-8.
    `void` | `setUseTouchScrolling(java.lang.Boolean useTouchScrolling)` On `touch devices`, if this `Canvas` can be scrolled, should touch-dragging the content area result in scrolling? Set to `false` if touch-dragging should not cause scrolling.
    `void` | `setValuesManager(ValuesManager valuesManager)` `ValuesManager` for managing values displayed in this component.
    `void` | `setVisibility(Visibility visibility)` Controls widget visibility when the widget is initialized.
    `void` | `setVisible(boolean visible)`
    `void` | `setWidth(int width)`
    `void` | `setWidth(java.lang.Integer width)` Size for this component's horizontal dimension.
    `void` | `setWidth(java.lang.String width)` Size for this component's horizontal dimension.
    `void` | `setWidth100()` Convenience method that sets the width to 100%.
    `void` | `setZIndex(int newIndex)` Set the z-Index of the canvas.
    `void` | `shouldDragScroll()` If this widget is showing scrollbars, and a user drags close to the edge of the viewport, should we scroll the viewport in the appropriate direction? Returns this.canDragScroll if there are scrollbars, else false.
    `void` | `show()` Sets this widget's visibility to "inherit", so that it becomes visible if all of its parents are visible or it has no parents.
    `java.lang.String` | `showClickMask(Function clickActionCallback, ClickMaskMode mode, Canvas[] unmaskedTargets)` Show a clickMask over the entire screen that intercepts mouse clicks and fires some action.
    `void` | `showComponentMask()` Temporariy block all user interaction with children of this widget, with the exception of those passed in in the `unmaskedChildren` parameter.
    `void` | `showComponentMask(Canvas... unmaskedChildren)` Temporariy block all user interaction with children of this widget, with the exception of those passed in in the `unmaskedChildren` parameter.
    `void` | `showNextTo(Canvas otherWidget)` Show this widget next to another widget on the page, positioned such that it will not extend beyond the browser viewport.
    `void` | `showNextTo(Canvas otherWidget, java.lang.String side)`
    `void` | `showNextTo(Canvas otherWidget, java.lang.String side, boolean canOcclude)`
    `void` | `showNextTo(Canvas otherWidget, java.lang.String side, boolean canOcclude, boolean skipAnimation)` Show this widget next to another widget on the page, positioned such that it will not extend beyond the browser viewport.
    `static void` | `showPrintPreview(Canvas component)` Show a PrintWindow containing a printable view of the component passed in containing print HTML.
    `static void` | `showPrintPreview(java.lang.Object[] components)` Show a Print containing a printable view of the components passed in.
    `static void` | `showPrintPreview(java.lang.Object[] components, PrintProperties printProperties, java.lang.String title, PrintPreviewCallback callback)` Show a Print containing a printable view of the components passed in.
    `static void` | `showPrintPreview(java.lang.Object[] components, PrintProperties printProperties, java.lang.String title, PrintPreviewCallback callback, Window printWindowProperties, java.lang.String printButtonTitle)` Show a Print containing a printable view of the components passed in.
    `void` | `showRecursively()` Recursively show the canvas and all it's parents so the canvas will be visible.
    `void` | `updateEditNode(EditContext editContext, EditNode editNode)` A callback invoked for each `liveObject` by `EditContext` when the EditContext is being serialized.
    `void` | `updateHover()` If this canvas is currently showing a hover (see `handleHover()`), this method can be called to update the contents of the hover.
    `void` | `updateHover(java.lang.String hoverHTML)` If this canvas is currently showing a hover (see `handleHover()`), this method can be called to update the contents of the hover.
    `void` | `updateShadow()` Update the canvas shadow.
    `java.lang.Boolean` | `visibleAtPoint(int x, int y, boolean withinViewport, Canvas ignoreWidgets, Canvas upToParent)` Does this widget contain the specified global (x,y) coordinates, and have no other widgets also at the specified position, obscuring this one? This is commonly used for (for example) drag and drop interactions.
    `java.lang.Boolean` | `willAcceptDrop()` Returns true if the widget object being dragged can be dropped on this widget, and false or null otherwise.

    - ### Methods inherited from class com.smartgwt.client.widgets.BaseWidget

      `addDrawHandler, applyFactoryProperties, destroy, doAddHandler, doInit, doOnRender, draw, equals, error, errorIfNotCreated, getAttribute, getAttributeAsBoolean, getAttributeAsDate, getAttributeAsDateArray, getAttributeAsDouble, getAttributeAsElement, getAttributeAsFloat, getAttributeAsFloatArray, getAttributeAsInt, getAttributeAsIntArray, getAttributeAsJavaScriptObject, getAttributeAsMap, getAttributeAsRecord, getAttributeAsString, getAttributeAsStringArray, getConfig, getDOM, getHandlerCount, getID, getInnerHTML, getJsObj, getOrCreateJsObj, getRef, getScClassName, hasAutoAssignedID, hashCode, initNativeObject, internalSetID, internalSetID, isConfigOnly, isCreated, isFactoryCreated, onBind, onDestroy, onDraw, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setConfig, setConfigOnly, setDragTracker, setFactoryCreated, setID, setJavaScriptObject, setLogicalStructure, setNullProperty, setPosition, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setScClassName, toString`

    - ### Methods inherited from class com.google.gwt.user.client.ui.Widget

      `addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getLayoutData, getParent, isAttached, isOrWasAttached, onBrowserEvent, onLoad, onUnload, removeFromParent, setLayoutData, sinkEvents, unsinkEvents`

    - ### Methods inherited from class com.google.gwt.user.client.ui.UIObject

      `addStyleDependentName, ensureDebugId, ensureDebugId, ensureDebugId, getStyleElement, getStyleName, getStylePrimaryName, getStylePrimaryName, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, resolvePotentialElement, setElement, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setVisible, sinkBitlessEvent`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

    - ### Methods inherited from interface com.google.gwt.event.shared.HasHandlers

      `fireEvent`

- - ### Constructor Detail

    - #### Canvas

          public Canvas()

    - #### Canvas

          public Canvas(com.google.gwt.core.client.JavaScriptObject jsObj)

    - #### Canvas

          public Canvas(java.lang.String id)

  - ### Method Detail

    - #### getOrCreateRef

          public static Canvas getOrCreateRef(com.google.gwt.core.client.JavaScriptObject jsObj)

    - #### changeAutoChildDefaults

          public static void changeAutoChildDefaults(java.lang.String autoChildName,
                                                     Canvas defaults)

      Changes the defaults for Canvas AutoChildren named `autoChildName`.
      Parameters:
        `autoChildName` - name of an AutoChild to customize the defaults for.
        `defaults` - Canvas defaults to apply. These defaults override any existing properties without destroying or wiping out non-overridden properties. For usage tips on this param, see `SGWTProperties`.
      See Also:
        `AutoChildUsage`

    - #### changeAutoChildDefaults

          public static void changeAutoChildDefaults(java.lang.String autoChildName,
                                                     FormItem defaults)

      Changes the defaults for FormItem AutoChildren named `autoChildName`.
      Parameters:
        `autoChildName` - name of an AutoChild to customize the defaults for.
        `defaults` - FormItem defaults to apply. These defaults override any existing properties without destroying or wiping out non-overridden properties. For usage tips on this param, see `SGWTProperties`.
      See Also:
        `AutoChildUsage`

    - #### create

          protected com.google.gwt.core.client.JavaScriptObject create()

      Overrides:
        `create` in class `BaseWidget`

    - #### setAccessKey

          public void setAccessKey(java.lang.String accessKey)

      If specified this governs the HTML accessKey for the widget.

      This should be set to a character - when a user hits the html accessKey modifier for the browser, plus this character, focus will be given to the widget in question. The accessKey modifier can vary by browser and platform.

      The following list of default behavior is for reference only, developers should also consult browser documentation for additional information.

      - Internet Explorer (all platforms): `Alt` + accessKey
      - Mozilla Firefox (Windows, Unix): `Alt+Shift` + accessKey
      - Mozilla Firefox (Mac): `Ctrl+Opt` + accessKey
      - Chrome and Safari (Windows, Unix): `Alt` + accessKey
      - Chrome and Safari (Mac): `Ctrl+Opt` + accessKey
      If this method is called after the component has been drawn/initialized: Set the accessKey for this canvas.

      The accessKey can be set to any alphanumeric character (symbols not supported) Having set an accessKey, the canvas will be given focus when the user hits Alt+[accessKey], or in Mozilla Firefox 2.0 and above, Shift+Alt+[accessKey].

      Note : This is an advanced setting

      Parameters:
        `accessKey` - Character to use as an accessKey for this widget. Case Insensitive.. Default value is null
      See Also:
        `Focus overview and related methods`

    - #### getAccessKey

          public java.lang.String getAccessKey()

      If specified this governs the HTML accessKey for the widget.

      This should be set to a character - when a user hits the html accessKey modifier for the browser, plus this character, focus will be given to the widget in question. The accessKey modifier can vary by browser and platform.

      The following list of default behavior is for reference only, developers should also consult browser documentation for additional information.

      - Internet Explorer (all platforms): `Alt` + accessKey
      - Mozilla Firefox (Windows, Unix): `Alt+Shift` + accessKey
      - Mozilla Firefox (Mac): `Ctrl+Opt` + accessKey
      - Chrome and Safari (Windows, Unix): `Alt` + accessKey
      - Chrome and Safari (Mac): `Ctrl+Opt` + accessKey
      Returns:
        String
      See Also:
        `Focus overview and related methods`

    - #### setAlwaysShowScrollbars

          public void setAlwaysShowScrollbars(java.lang.Boolean alwaysShowScrollbars)
                                       throws java.lang.IllegalStateException

      On `touch devices` that support native touch scrolling, if `showCustomScrollbars` is `true` and touch scrolling has not been disabled by the `useTouchScrolling` and/or `disableTouchScrollingForDrag` settings, should custom scrollbars and native touch scrolling be enabled for this component? If `false` or unset, then only native touch scrolling will be enabled. If `true`, then both scrolling mechanisms will be enabled.

      NOTE: Because native touch scrolling (also called momentum scrolling) is computationally intensive, some mobile browsers implement an optimization where the state of the DOM for the element being scrolled will be frozen or partially frozen during the scroll animation. This results in a delay between when the scroll position reaches a certain point in the animation and when the positions of the custom scrollbar thumbs are updated to reflect that scroll position.

      Note : This is an advanced setting

      Parameters:
        `alwaysShowScrollbars` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Scrolling overview and related methods`

    - #### getAlwaysShowScrollbars

          public java.lang.Boolean getAlwaysShowScrollbars()

      On `touch devices` that support native touch scrolling, if `showCustomScrollbars` is `true` and touch scrolling has not been disabled by the `useTouchScrolling` and/or `disableTouchScrollingForDrag` settings, should custom scrollbars and native touch scrolling be enabled for this component? If `false` or unset, then only native touch scrolling will be enabled. If `true`, then both scrolling mechanisms will be enabled.

      NOTE: Because native touch scrolling (also called momentum scrolling) is computationally intensive, some mobile browsers implement an optimization where the state of the DOM for the element being scrolled will be frozen or partially frozen during the scroll animation. This results in a delay between when the scroll position reaches a certain point in the animation and when the positions of the custom scrollbar thumbs are updated to reflect that scroll position.

      Returns:
        Boolean
      See Also:
        `Scrolling overview and related methods`

    - #### setAnimateAcceleration

          public void setAnimateAcceleration(AnimationAcceleration animateAcceleration)

      Default acceleration effect to apply to all animations on this Canvas. Can be overridden by setting animationAcceleration for specific animations or by passing an acceleration function directly into the appropriate method.

      Note : This is an advanced setting

      Parameters:
        `animateAcceleration` - Default value is "smoothEnd"

    - #### getAnimateAcceleration

          public AnimationAcceleration getAnimateAcceleration()

      Default acceleration effect to apply to all animations on this Canvas. Can be overridden by setting animationAcceleration for specific animations or by passing an acceleration function directly into the appropriate method.
      Returns:
        AnimationAcceleration

    - #### setAnimateFadeTime

          public void setAnimateFadeTime(java.lang.Integer animateFadeTime)

      Default time for performing an animated fade. If unset, `this.animateTime` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateFadeTime` - Default value is null

    - #### getAnimateFadeTime

          public java.lang.Integer getAnimateFadeTime()

      Default time for performing an animated fade. If unset, `this.animateTime` will be used by default instead
      Returns:
        Integer

    - #### setAnimateHideAcceleration

          public void setAnimateHideAcceleration(AnimationAcceleration animateHideAcceleration)

      Default acceleration function for performing an animated hide. If unset, `this.animateAcceleration` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateHideAcceleration` - Default value is null

    - #### getAnimateHideAcceleration

          public AnimationAcceleration getAnimateHideAcceleration()

      Default acceleration function for performing an animated hide. If unset, `this.animateAcceleration` will be used by default instead
      Returns:
        AnimationAcceleration

    - #### setAnimateHideTime

          public void setAnimateHideTime(java.lang.Integer animateHideTime)

      Default time for performing an animated hide. If unset, `this.animateTime` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateHideTime` - Default value is null

    - #### getAnimateHideTime

          public java.lang.Integer getAnimateHideTime()

      Default time for performing an animated hide. If unset, `this.animateTime` will be used by default instead
      Returns:
        Integer

    - #### setAnimateMoveAcceleration

          public void setAnimateMoveAcceleration(AnimationAcceleration animateMoveAcceleration)

      Default acceleration effect for performing an animated move. If unset, `this.animateAcceleration` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateMoveAcceleration` - Default value is null

    - #### getAnimateMoveAcceleration

          public AnimationAcceleration getAnimateMoveAcceleration()

      Default acceleration effect for performing an animated move. If unset, `this.animateAcceleration` will be used by default instead
      Returns:
        AnimationAcceleration

    - #### setAnimateMoveTime

          public void setAnimateMoveTime(java.lang.Integer animateMoveTime)

      Default time for performing an animated move. If unset, `this.animateTime` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateMoveTime` - Default value is null

    - #### getAnimateMoveTime

          public java.lang.Integer getAnimateMoveTime()

      Default time for performing an animated move. If unset, `this.animateTime` will be used by default instead
      Returns:
        Integer

    - #### setAnimateRectAcceleration

          public void setAnimateRectAcceleration(AnimationAcceleration animateRectAcceleration)

      Default acceleration function for performing an animated move and resize. If unset, `this.animateAcceleration` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateRectAcceleration` - Default value is null

    - #### getAnimateRectAcceleration

          public AnimationAcceleration getAnimateRectAcceleration()

      Default acceleration function for performing an animated move and resize. If unset, `this.animateAcceleration` will be used by default instead
      Returns:
        AnimationAcceleration

    - #### setAnimateRectTime

          public void setAnimateRectTime(java.lang.Integer animateRectTime)

      Default time for performing an animated setRect. If unset, `this.animateTime` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateRectTime` - Default value is null

    - #### getAnimateRectTime

          public java.lang.Integer getAnimateRectTime()

      Default time for performing an animated setRect. If unset, `this.animateTime` will be used by default instead
      Returns:
        Integer

    - #### setAnimateResizeAcceleration

          public void setAnimateResizeAcceleration(AnimationAcceleration animateResizeAcceleration)

      Default acceleration function for performing an animated resize. If unset, `this.animateAcceleration` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateResizeAcceleration` - Default value is null

    - #### getAnimateResizeAcceleration

          public AnimationAcceleration getAnimateResizeAcceleration()

      Default acceleration function for performing an animated resize. If unset, `this.animateAcceleration` will be used by default instead
      Returns:
        AnimationAcceleration

    - #### setAnimateResizeTime

          public void setAnimateResizeTime(java.lang.Integer animateResizeTime)

      Default time for performing an animated resize. If unset, `this.animateTime` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateResizeTime` - Default value is null

    - #### getAnimateResizeTime

          public java.lang.Integer getAnimateResizeTime()

      Default time for performing an animated resize. If unset, `this.animateTime` will be used by default instead
      Returns:
        Integer

    - #### setAnimateScrollAcceleration

          public void setAnimateScrollAcceleration(AnimationAcceleration animateScrollAcceleration)

      Default acceleration function for performing an animated scroll. If unset, `this.animateAcceleration` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateScrollAcceleration` - Default value is null

    - #### getAnimateScrollAcceleration

          public AnimationAcceleration getAnimateScrollAcceleration()

      Default acceleration function for performing an animated scroll. If unset, `this.animateAcceleration` will be used by default instead
      Returns:
        AnimationAcceleration

    - #### setAnimateScrollTime

          public void setAnimateScrollTime(java.lang.Integer animateScrollTime)

      Default time for performing an animated scroll. If unset, `this.animateTime` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateScrollTime` - Default value is null

    - #### getAnimateScrollTime

          public java.lang.Integer getAnimateScrollTime()

      Default time for performing an animated scroll. If unset, `this.animateTime` will be used by default instead
      Returns:
        Integer

    - #### setAnimateShowAcceleration

          public void setAnimateShowAcceleration(AnimationAcceleration animateShowAcceleration)

      Default acceleration function for performing an animated show. If unset, `this.animateAcceleration` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateShowAcceleration` - Default value is null

    - #### getAnimateShowAcceleration

          public AnimationAcceleration getAnimateShowAcceleration()

      Default acceleration function for performing an animated show. If unset, `this.animateAcceleration` will be used by default instead
      Returns:
        AnimationAcceleration

    - #### setAnimateShowTime

          public void setAnimateShowTime(java.lang.Integer animateShowTime)

      Default time for performing an animated show. If unset, `this.animateTime` will be used by default instead

      Note : This is an advanced setting

      Parameters:
        `animateShowTime` - Default value is null

    - #### getAnimateShowTime

          public java.lang.Integer getAnimateShowTime()

      Default time for performing an animated show. If unset, `this.animateTime` will be used by default instead
      Returns:
        Integer

    - #### setAnimateTime

          public void setAnimateTime(int animateTime)

      Default total duration of animations. Can be overridden by setting animation times for specific animations, or by passing a `duration` parameter into the appropriate animate...() method.

      Note : This is an advanced setting

      Parameters:
        `animateTime` - Default value is 300
      See Also:
        Fly Onscreen Example

    - #### getAnimateTime

          public int getAnimateTime()

      Default total duration of animations. Can be overridden by setting animation times for specific animations, or by passing a `duration` parameter into the appropriate animate...() method.
      Returns:
        int
      See Also:
        Fly Onscreen Example

    - #### setAppImgDir

          public void setAppImgDir(java.lang.String appImgDir)

      Default directory for app-specific images, relative to the Page-wide `appImgDir`.

      Note : This is an advanced setting

      Parameters:
        `appImgDir` - Default value is ""
      See Also:
        `Images overview and related methods`

    - #### getAppImgDir

          public java.lang.String getAppImgDir()

      Default directory for app-specific images, relative to the Page-wide `appImgDir`.
      Returns:
        String
      See Also:
        `Images overview and related methods`

    - #### setAriaRole

          public void setAriaRole(java.lang.String ariaRole)
                           throws java.lang.IllegalStateException

      ARIA role of this component. Usually does not need to be manually set - see `Accessibility`.
      Parameters:
        `ariaRole` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Accessibility overview and related methods`

    - #### getAriaRole

          public java.lang.String getAriaRole()

      ARIA role of this component. Usually does not need to be manually set - see `Accessibility`.
      Returns:
        String
      See Also:
        `Accessibility overview and related methods`

    - #### setAutoDraw

          public void setAutoDraw(java.lang.Boolean autoDraw)
                           throws java.lang.IllegalStateException

      If true, this canvas will draw itself immediately after it is created.

      Note that you should turn this OFF for any canvases that are provided as children of other canvases, or they will draw initially, then be clear()ed and drawn again when added as children, causing a large performance penalty.

      For example, the following code is incorrect and will cause extra draw()s:

                isc.Layout.create({
                    members : [
                        isc.ListGrid.create()
                    ]
                });

      It should instead be:

                isc.Layout.create({
                    members : [
                        isc.ListGrid.create({ autoDraw: false })
                    ]
                });

      In order to avoid unwanted autoDrawing systematically, it is recommend that you call `isc.setAutoDraw(false)` immediately after Smart GWT is loaded and before any components are created, then set `autoDraw:true` or call draw() explicitly to draw components.

      Otherwise, if the global setting for autoDraw remains `true`, you must set autoDraw:false, as shown above, on every component in your application that should not immediately draw: all Canvas children, Layout members, Window items, Tab panes, etc, however deeply nested. Forgetting to set autoDraw:false will result in one more clear()s - these are reported on the Results tab of the `Developer Console`, and can be tracked to individual components by using the "clears" log category in the Developer Console.

      Parameters:
        `autoDraw` - Default value is true
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Drawing overview and related methods`

    - #### getAutoDraw

          public java.lang.Boolean getAutoDraw()

      If true, this canvas will draw itself immediately after it is created.

      Note that you should turn this OFF for any canvases that are provided as children of other canvases, or they will draw initially, then be clear()ed and drawn again when added as children, causing a large performance penalty.

      For example, the following code is incorrect and will cause extra draw()s:

                isc.Layout.create({
                    members : [
                        isc.ListGrid.create()
                    ]
                });

      It should instead be:

                isc.Layout.create({
                    members : [
                        isc.ListGrid.create({ autoDraw: false })
                    ]
                });

      In order to avoid unwanted autoDrawing systematically, it is recommend that you call `isc.setAutoDraw(false)` immediately after Smart GWT is loaded and before any components are created, then set `autoDraw:true` or call draw() explicitly to draw components.

      Otherwise, if the global setting for autoDraw remains `true`, you must set autoDraw:false, as shown above, on every component in your application that should not immediately draw: all Canvas children, Layout members, Window items, Tab panes, etc, however deeply nested. Forgetting to set autoDraw:false will result in one more clear()s - these are reported on the Results tab of the `Developer Console`, and can be tracked to individual components by using the "clears" log category in the Developer Console.

      Returns:
        Boolean
      See Also:
        `Drawing overview and related methods`

    - #### setAutoMaskComponents

          public void setAutoMaskComponents(java.lang.Boolean autoMaskComponents)
                                     throws java.lang.IllegalStateException

      Deprecated. As of Smart GWT version 10.0, deprecated in favor of `EditProxy.autoMaskChildren`
      When nodes are added to an EditContext, should they be masked by setting `EditNode.useEditMask` `true` if not explicitly set?
      Parameters:
        `autoMaskComponents` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getAutoMaskComponents

          public java.lang.Boolean getAutoMaskComponents()

      Deprecated. As of Smart GWT version 10.0, deprecated in favor of `EditProxy.autoMaskChildren`
      When nodes are added to an EditContext, should they be masked by setting `EditNode.useEditMask` `true` if not explicitly set?
      Returns:
        Boolean

    - #### setAutoShowParent

          public void setAutoShowParent(java.lang.Boolean autoShowParent)

      If set to true, the widget's parent (if any) will automatically be shown whenever the widget is shown.

      Note : This is an advanced setting

      Parameters:
        `autoShowParent` - Default value is false
      See Also:
        `Appearance overview and related methods`

    - #### getAutoShowParent

          public java.lang.Boolean getAutoShowParent()

      If set to true, the widget's parent (if any) will automatically be shown whenever the widget is shown.
      Returns:
        Boolean
      See Also:
        `Appearance overview and related methods`

    - #### setBackgroundColor

          public void setBackgroundColor(java.lang.String backgroundColor)

      The background color for this widget. It corresponds to the CSS background-color attribute. You can set this property to an RGB value (e.g. #22AAFF) or a named color (e.g. red) from a list of browser supported color names.
      If this method is called after the component has been drawn/initialized: Sets the background color of this component to `newColor`.
      Parameters:
        `backgroundColor` - new background color, or `null` to remove the current background color. See `CSSColor` . Default value is null
      See Also:
        `Appearance overview and related methods`

    - #### getBackgroundColor

          public java.lang.String getBackgroundColor()

      The background color for this widget. It corresponds to the CSS background-color attribute. You can set this property to an RGB value (e.g. #22AAFF) or a named color (e.g. red) from a list of browser supported color names.
      Returns:
        See `CSSColor`
      See Also:
        `Appearance overview and related methods`

    - #### setBackgroundImage

          public void setBackgroundImage(java.lang.String backgroundImage)

      URL for a background image for this widget (corresponding to the CSS "background-image" attribute).
      If this method is called after the component has been drawn/initialized: Sets the background to an image file given by newImage. This URL should be given as a string relative to the image directory for the page (./images by default).
      Parameters:
        `backgroundImage` - new URL (local to Page image directory) for background image See `SCImgURL` . Default value is null
      See Also:
        `Appearance overview and related methods`

    - #### getBackgroundImage

          public java.lang.String getBackgroundImage()

      URL for a background image for this widget (corresponding to the CSS "background-image" attribute).
      Returns:
        See `SCImgURL`
      See Also:
        `Appearance overview and related methods`

    - #### setBackgroundPosition

          public void setBackgroundPosition(java.lang.String backgroundPosition)
                                     throws java.lang.IllegalStateException

      Specifies how the background image should be positioned on the widget. It corresponds to the CSS background-position attribute. If unset, no background-position attribute is specified if a background image is specified.
      Parameters:
        `backgroundPosition` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Appearance overview and related methods`

    - #### getBackgroundPosition

          public java.lang.String getBackgroundPosition()

      Specifies how the background image should be positioned on the widget. It corresponds to the CSS background-position attribute. If unset, no background-position attribute is specified if a background image is specified.
      Returns:
        String
      See Also:
        `Appearance overview and related methods`

    - #### setBackgroundRepeat

          public void setBackgroundRepeat(BackgroundRepeat backgroundRepeat)
                                   throws java.lang.IllegalStateException

      Specifies how the background image should be tiled if this widget is larger than the image. It corresponds to the CSS `background-repeat` attribute.

      The default of null means no `background-repeat` CSS will be written out. See `BackgroundRepeat` type for details on other settings.

      NOTE: this setting directly sets the CSS property `background-repeat` but does not attempt to work around various known bugs with this setting, or lack of support in IE6. If you need to apply CSS-based workarounds for browser limitations with this setting, it's best to do so via setting `styleName`.

      Parameters:
        `backgroundRepeat` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Appearance overview and related methods`

    - #### getBackgroundRepeat

          public BackgroundRepeat getBackgroundRepeat()

      Specifies how the background image should be tiled if this widget is larger than the image. It corresponds to the CSS `background-repeat` attribute.

      The default of null means no `background-repeat` CSS will be written out. See `BackgroundRepeat` type for details on other settings.

      NOTE: this setting directly sets the CSS property `background-repeat` but does not attempt to work around various known bugs with this setting, or lack of support in IE6. If you need to apply CSS-based workarounds for browser limitations with this setting, it's best to do so via setting `styleName`.

      Returns:
        BackgroundRepeat
      See Also:
        `Appearance overview and related methods`

    - #### setBorder

          public void setBorder(java.lang.String border)

      Set the CSS border of this component, as a CSS string including border-width, border-style, and/or color (eg "2px solid blue").

      This property applies the same border to all four sides of this component. Different per-side borders can be set in a CSS style and applied via `styleName`.

      If `isGroup` is set to true then border is derived from the `groupBorderCSS` attribute, not from the explicit border property.
      If this method is called after the component has been drawn/initialized: Set the CSS border of this component, as a CSS string including border-width, border-style, and/or color (eg "2px solid blue").

      This property applies the same border to all four sides of this component. Different per-side borders can be set in a CSS style and applied via `styleName`.

      Parameters:
        `border` - new border to set to (eg: "2px solid black"). Default value is null
      See Also:
        `Appearance overview and related methods`

    - #### getBorder

          public java.lang.String getBorder()

      Set the CSS border of this component, as a CSS string including border-width, border-style, and/or color (eg "2px solid blue").

      This property applies the same border to all four sides of this component. Different per-side borders can be set in a CSS style and applied via `styleName`.

      If `isGroup` is set to true then border is derived from the `groupBorderCSS` attribute, not from the explicit border property.

      Returns:
        String
      See Also:
        `Appearance overview and related methods`

    - #### setCanAcceptDrop

          public void setCanAcceptDrop(java.lang.Boolean canAcceptDrop)

      Indicates that this object can receive dropped widgets (i.e. other widgets can be dropped on top of it).

      Note : This is an advanced setting

      Parameters:
        `canAcceptDrop` - Default value is false
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### getCanAcceptDrop

          public java.lang.Boolean getCanAcceptDrop()

      Indicates that this object can receive dropped widgets (i.e. other widgets can be dropped on top of it).
      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### setCanDrag

          public void setCanDrag(java.lang.Boolean canDrag)

      Indicates whether this widget can initiate custom drag-and-drop operations (other than reposition or resize). Normally `canDragReposition` or `canDragResize` would be used instead of this property.

      Note: this property may be manipulated by higher-level dragging semantics.

      If `useNativeDrag` is true and this widget has been drawn, then this widget must be `redrawn` in order for a change of the value of this attribute to take effect.

      Note : This is an advanced setting

      Parameters:
        `canDrag` - Default value is false
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### getCanDrag

          public java.lang.Boolean getCanDrag()

      Indicates whether this widget can initiate custom drag-and-drop operations (other than reposition or resize). Normally `canDragReposition` or `canDragResize` would be used instead of this property.

      Note: this property may be manipulated by higher-level dragging semantics.

      If `useNativeDrag` is true and this widget has been drawn, then this widget must be `redrawn` in order for a change of the value of this attribute to take effect.

      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### setCanDragReposition

          public void setCanDragReposition(java.lang.Boolean canDragReposition)

      Indicates whether this widget can be moved by a user of your application by simply dragging with the mouse.

      Note : This is an advanced setting

      Parameters:
        `canDragReposition` - Default value is false
      See Also:
        `Dragdrop overview and related methods`, Drag effects Example

    - #### getCanDragReposition

          public java.lang.Boolean getCanDragReposition()

      Indicates whether this widget can be moved by a user of your application by simply dragging with the mouse.
      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`, Drag effects Example

    - #### setCanDragResize

          public void setCanDragResize(java.lang.Boolean canDragResize)

      Indicates whether this widget can be resized by dragging on the edges and/or corners of the widget with the mouse.

      Note : This is an advanced setting

      Parameters:
        `canDragResize` - Default value is false
      See Also:
        `Dragdrop overview and related methods`, Drag resize Example

    - #### getCanDragResize

          public java.lang.Boolean getCanDragResize()

      Indicates whether this widget can be resized by dragging on the edges and/or corners of the widget with the mouse.
      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`, Drag resize Example

    - #### setCanDragScroll

          public void setCanDragScroll(boolean canDragScroll)

      If this Canvas is canAcceptDrop:true, when the user drags a droppable widget over an edge of the widget, should we scroll to show the rest of the widget's content? Returned from canvas.shouldDragScroll() if there are scrollbars.

      Note : This is an advanced setting

      Parameters:
        `canDragScroll` - Default value is true
      See Also:
        `shouldDragScroll()`

    - #### getCanDragScroll

          public boolean getCanDragScroll()

      If this Canvas is canAcceptDrop:true, when the user drags a droppable widget over an edge of the widget, should we scroll to show the rest of the widget's content? Returned from canvas.shouldDragScroll() if there are scrollbars.
      Returns:
        boolean
      See Also:
        `shouldDragScroll()`

    - #### setCanDrop

          public void setCanDrop(java.lang.Boolean canDrop)

      Indicates that this object can be dropped on top of other widgets. Only valid if canDrag or canDragReposition is true.

      Note : This is an advanced setting

      Parameters:
        `canDrop` - Default value is false
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### getCanDrop

          public java.lang.Boolean getCanDrop()

      Indicates that this object can be dropped on top of other widgets. Only valid if canDrag or canDragReposition is true.
      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### setCanDropBefore

          public void setCanDropBefore(java.lang.Boolean canDropBefore)

      When explicitly set to false, disallows drop before this member in the Layout.

      Note : This is an advanced setting

      Parameters:
        `canDropBefore` - Default value is null
      See Also:
        `Layout`, `LayoutMember overview and related methods`

    - #### getCanDropBefore

          public java.lang.Boolean getCanDropBefore()

      When explicitly set to false, disallows drop before this member in the Layout.
      Returns:
        Boolean
      See Also:
        `Layout`, `LayoutMember overview and related methods`

    - #### setCanFocus

          public void setCanFocus(java.lang.Boolean canFocus)

      Can this widget be allowed to become the target of keyboard events?

      If canFocus is unset (the default), only scrollable widgets with visible scrollbars are focusable, to allow for keyboard scrolling.

      A widget normally receives focus by being clicked on or tabbed to.
      If this method is called after the component has been drawn/initialized: Change whether a widget can accept keyboard focus.

      Note : This is an advanced setting

      Parameters:
        `canFocus` - whether the widget should now accept focus. Default value is null
      See Also:
        `Focus overview and related methods`, Focus & Tabbing Example

    - #### getCanFocus

          public java.lang.Boolean getCanFocus()

      Can this widget be allowed to become the target of keyboard events?

      If canFocus is unset (the default), only scrollable widgets with visible scrollbars are focusable, to allow for keyboard scrolling.

      A widget normally receives focus by being clicked on or tabbed to.

      Returns:
        Boolean
      See Also:
        `Focus overview and related methods`, Focus & Tabbing Example

    - #### setCanHover

          public void setCanHover(java.lang.Boolean canHover)

      Will this Canvas fire hover events when the user hovers over it, or one of its children?
      Parameters:
        `canHover` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`, `HoverEvent`

    - #### getCanHover

          public java.lang.Boolean getCanHover()

      Will this Canvas fire hover events when the user hovers over it, or one of its children?
      Returns:
        Boolean
      See Also:
        `getShowHover()`, `HoverEvent`

    - #### setCanSelectText

          public void setCanSelectText(java.lang.Boolean canSelectText)

      Whether native drag selection of contained text is allowed within this Canvas.

      Note that setting this property to `false` will not avoid text selection which is initiated outside this Canvas from continuing into this Canvas, even if text selection began in another Canvas.

      Note : This is an advanced setting

      Parameters:
        `canSelectText` - Default value is false

    - #### getCanSelectText

          public java.lang.Boolean getCanSelectText()

      Whether native drag selection of contained text is allowed within this Canvas.

      Note that setting this property to `false` will not avoid text selection which is initiated outside this Canvas from continuing into this Canvas, even if text selection began in another Canvas.

      Returns:
        Boolean

    - #### getCanvasItem

          public CanvasItem getCanvasItem()
                                   throws java.lang.IllegalStateException

      If this canvas is being displayed in a `CanvasItem`, this property will be set to point at the item. Otherwise this property will be null.

      Note : This method should be called only after the widget has been rendered.

      Returns:
        CanvasItem
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.

    - #### getChildren

          public Canvas[] getChildren()

      Array of all Canvii that are immediate children of this Canvas.

      Use `addChild()` and `removeChild()` to add and remove children after a Canvas has been created/drawn.

      Returns:
        Canvas...
      See Also:
        `Containment overview and related methods`

    - #### setChildrenResizeSnapAlign

          public void setChildrenResizeSnapAlign(java.lang.Boolean childrenResizeSnapAlign)

      Flag to disable snapping to alignment when children of this Canvas are resized
      Parameters:
        `childrenResizeSnapAlign` - Default value is null

    - #### getChildrenResizeSnapAlign

          public java.lang.Boolean getChildrenResizeSnapAlign()

      Flag to disable snapping to alignment when children of this Canvas are resized
      Returns:
        Boolean

    - #### setChildrenSnapAlign

          public void setChildrenSnapAlign(java.lang.Boolean childrenSnapAlign)

      If enabled while `childrenSnapToGrid` is enabled, children dragged within this Canvas will also snap to positions where their edges or center lines would be aligned with the edges or centers of other components, and lines will be shown to point out the possible alignment (with appearance controlled by `snapAlignCenterLineStyle` and `snapAlignEdgeLineStyle` respectively.

      By default, edge- or center-snapping is enabled for all components, but the set of eligible components can be explicitly set via `snapAlignCandidates`.

      See also `childrenSnapCenterAlign` and `childrenSnapEdgeAlign` for enabling or disabling center alignment or edge alignment individually.

      Parameters:
        `childrenSnapAlign` - Default value is null

    - #### getChildrenSnapAlign

          public java.lang.Boolean getChildrenSnapAlign()

      If enabled while `childrenSnapToGrid` is enabled, children dragged within this Canvas will also snap to positions where their edges or center lines would be aligned with the edges or centers of other components, and lines will be shown to point out the possible alignment (with appearance controlled by `snapAlignCenterLineStyle` and `snapAlignEdgeLineStyle` respectively.

      By default, edge- or center-snapping is enabled for all components, but the set of eligible components can be explicitly set via `snapAlignCandidates`.

      See also `childrenSnapCenterAlign` and `childrenSnapEdgeAlign` for enabling or disabling center alignment or edge alignment individually.

      Returns:
        Boolean

    - #### setChildrenSnapCenterAlign

          public void setChildrenSnapCenterAlign(java.lang.Boolean childrenSnapCenterAlign)

      See `childrenSnapAlign`. This setting enables or disables snapping on center alignment only.
      Parameters:
        `childrenSnapCenterAlign` - Default value is null

    - #### getChildrenSnapCenterAlign

          public java.lang.Boolean getChildrenSnapCenterAlign()

      See `childrenSnapAlign`. This setting enables or disables snapping on center alignment only.
      Returns:
        Boolean

    - #### setChildrenSnapEdgeAlign

          public void setChildrenSnapEdgeAlign(java.lang.Boolean childrenSnapEdgeAlign)

      See `childrenSnapAlign`. This setting enables or disables snapping on edge alignment only.
      Parameters:
        `childrenSnapEdgeAlign` - Default value is null

    - #### getChildrenSnapEdgeAlign

          public java.lang.Boolean getChildrenSnapEdgeAlign()

      See `childrenSnapAlign`. This setting enables or disables snapping on edge alignment only.
      Returns:
        Boolean

    - #### setChildrenSnapResizeToGrid

          public void setChildrenSnapResizeToGrid(java.lang.Boolean childrenSnapResizeToGrid)

      If true, causes this canvas's children to snap to its grid when resizing. This behavior can be overridden on a per-child basis by setting the `snapToGrid` or `snapResizeToGrid` value on the child.
      Parameters:
        `childrenSnapResizeToGrid` - Default value is null
      See Also:
        `Dragdrop overview and related methods`

    - #### getChildrenSnapResizeToGrid

          public java.lang.Boolean getChildrenSnapResizeToGrid()

      If true, causes this canvas's children to snap to its grid when resizing. This behavior can be overridden on a per-child basis by setting the `snapToGrid` or `snapResizeToGrid` value on the child.
      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`

    - #### setChildrenSnapToGrid

          public void setChildrenSnapToGrid(java.lang.Boolean childrenSnapToGrid)

      If true, causes this canvas's children to snap to its grid when dragging. This behavior can be overridden on a per-child basis by setting the `snapToGrid` value on the child.
      Parameters:
        `childrenSnapToGrid` - Default value is null
      See Also:
        `Dragdrop overview and related methods`

    - #### getChildrenSnapToGrid

          public java.lang.Boolean getChildrenSnapToGrid()

      If true, causes this canvas's children to snap to its grid when dragging. This behavior can be overridden on a per-child basis by setting the `snapToGrid` value on the child.
      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`

    - #### getComponentMask

          public Canvas getComponentMask()
                                  throws java.lang.IllegalStateException

      Automatically generated mask canvas displayed when `showComponentMask()` is called.

      For an overview of how to use and configure AutoChildren, see `Using AutoChildren`.

      Returns:
        Canvas
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.
      See Also:
        `getComponentMaskDefaults()`

    - #### setComponentMaskDefaults

          public void setComponentMaskDefaults(Canvas componentMaskDefaults)
                                        throws java.lang.IllegalStateException

      Defaults for the `componentMask` autoChild. Default properties include `backgroundColor` being set to `"black"` and `opacity` being set to `20`.
      Parameters:
        `componentMaskDefaults` - Default value is {...}
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `SGWTProperties`

    - #### getComponentMaskDefaults

          public Canvas getComponentMaskDefaults()

      Defaults for the `componentMask` autoChild. Default properties include `backgroundColor` being set to `"black"` and `opacity` being set to `20`.
      Returns:
        Canvas

    - #### setContents

          public void setContents(java.lang.String contents)

      The contents of a canvas or label widget. Any HTML string is acceptable.
      If this method is called after the component has been drawn/initialized: Changes the contents of a widget to newContents, an HTML string.

      When `dynamicContents` is set, `setContents()` can also be called with no arguments to cause contents to be re-evaluated.

      Note : This is an advanced setting

      Parameters:
        `contents` - an HTML string to be set as the contents of this widget See `HTMLString` . Default value is "&nbsp;"
      See Also:
        `setDynamicContents(java.lang.Boolean)`

    - #### getContents

          public java.lang.String getContents()

      The contents of a canvas or label widget. Any HTML string is acceptable.
      Returns:
        Returns the contents of a Canvas. The contents are an HTML string. See `HTMLString`
      See Also:
        `getDynamicContents()`

    - #### setContextMenu

          public void setContextMenu(Menu contextMenu)

      Context menu to show for this object, an instance of the Menu widget.

      Note: if `destroy()` is called on a canvas, any specified context menu is not automatically destroyed as well. This is in contrast to `MenuButton`s which automatically destroy their specified `MenuButton.menu` by default. The behavior is intentional as context menus are commonly reused across components.

      Note : This is an advanced setting

      Parameters:
        `contextMenu` - Default value is null
      See Also:
        `ShowContextMenuEvent`, `Cues overview and related methods`, Context menus Example

    - #### getContextMenu

          public Menu getContextMenu()

      Context menu to show for this object, an instance of the Menu widget.

      Note: if `destroy()` is called on a canvas, any specified context menu is not automatically destroyed as well. This is in contrast to `MenuButton`s which automatically destroy their specified `MenuButton.menu` by default. The behavior is intentional as context menus are commonly reused across components.

      Returns:
        Menu
      See Also:
        `ShowContextMenuEvent`, `Cues overview and related methods`, Context menus Example

    - #### setCursor

          public void setCursor(Cursor cursor)

      Specifies the cursor image to display when the mouse pointer is over this widget. It corresponds to the CSS cursor attribute. See Cursor type for different cursors.

      See also `disabledCursor` and `noDropCursor`.
      If this method is called after the component has been drawn/initialized: Sets the cursor for this widget to cursor. See the cursor property for possible values.

      Note : This is an advanced setting

      Parameters:
        `cursor` - new cursor. Default value is Canvas.DEFAULT
      See Also:
        `Cues overview and related methods`, Drag create Example, Cursors Example

    - #### getCursor

          public Cursor getCursor()

      Specifies the cursor image to display when the mouse pointer is over this widget. It corresponds to the CSS cursor attribute. See Cursor type for different cursors.

      See also `disabledCursor` and `noDropCursor`.

      Returns:
        Cursor
      See Also:
        `Cues overview and related methods`, Drag create Example, Cursors Example

    - #### setDataPath

          public void setDataPath(java.lang.String dataPath)

      A dataPath may be specified on any canvas. This provides a straightforward way to display or edit complex nested data.

      For components which support displaying or editing data values, (such as `DynamicForm` or `ListGrid` components), the dataPath may be set to specify how the components data is accessed. In this case the dataPath essentially specifies a nested object to edit - typically a path to a field value within a dataSource record. Note that a ValuesManager will be required to handle connecting the dataBoundcomponent to the appropriate sub object. This may be explicitly specified on the component, or a parent of the component, or automatically generated if a DataSource is specified on either the component or a parent thereof.

      To provide a simple example - if a complex object existed with the following format:

            { companyName:"Some Company",
              address:{    street:"123 Main Street", city:"New York", state:"NY"  }
            }

      a developer could specify a DynamicForm instance with 'dataPath' set to "address" to edit the nested address object:

            isc.ValuesManager.create({
                 ID:'vm',
                 values: { companyName:"Some Company",
                         address:{    street:"123 Main Street", city:"New York", state:"NY"  }
                 }
            });

            isc.DynamicForm.create({
                 valuesManager:"vm",
                 dataPath:"address",
                 items:[{name:"street"}, {name:"city"}, {name:"state"}]
            });

      If a component is specified with a `dataPath` attribute but does not have an explicitly specified valuesManager, it will check its parent element chain for a specified valuesManager and automatically bind to that. This simplifies binding multiple components used to view or edit a nested data structure as the valuesManager needs only be defined once at a reasonably high level component. Here's an example of this approach:

            isc.ValuesManager.create({
                 ID:'vm',
                 values: { companyName:"Some Company",
                         address:{    street:"123 Main Street", city:"New York", state:"NY"  }
                 }
            });

            isc.Layout.create({
                 valuesManager:"vm",
                 members:[
                     isc.DynamicForm.create({
                         dataPath:"/",
                         items:[{name:"companyName"}]
                     }),
                     isc.DynamicForm.create({
                         dataPath:"address",
                         items:[{name:"street"}, {name:"city"}, {name:"state"}]
                     })
                 ]
            });

      Note that in this case the valuesManager is specified on a Layout, which has no 'values' management behavior of its own, but contains items with a specified dataPath which do. In this example you'd see 2 forms allowing editing of the nested data structure.

      dataPaths from multiple nested components may also be combined. For example:

            isc.ValuesManager.create({
                 ID:'vm',
                 values: { companyName:"Some Company",
                         address:{    street:"123 Main Street", city:"New York", state:"NY"  }
                         parentCompany:{
                             companyName:"Some Corporation",
                             address:{   street:"1 High Street", city:"New York", state:"NY" }
                         }
                 }
            });

            isc.Layout.create({
                 valuesManager:"vm",
                 members:[
                     isc.DynamicForm.create({
                         dataPath:"/",
                         items:[{name:"companyName"}]
                     }),
                     isc.DynamicForm.create({
                         dataPath:"address",
                         items:[{name:"street"}, {name:"city"}, {name:"state"}]
                     }),
                     isc.Layout.create({
                         dataPath:"parentCompany",
                         members:[
                             isc.DynamicForm.create({
                                 dataPath:"/",
                                 items:[{name:"companyName", type:"staticText"}]
                             }),
                             isc.DetailViewer.create({
                                 dataPath:"address",
                                 fields:[{name:"street", name:"city", name:"state"}]
                             })
                         ]
                     })
                 ]
            });

      In this example the detailViewer will display data from the `parentCompany.address` object within the base record.

      Note that if a component has a specified dataSource and shows child components with a specified dataPath, there is no need to explicitly declare a valuesManager at all. If a component with a dataPath has a dataSource, or an ancestor with a dataSource specified, it will, a valuesManager will automatically be generated on the higher level component (and be available as `component.valuesManager`).
      If this method is called after the component has been drawn/initialized: Setter for the `dataPath` attribute. This method may be called directly at runtime to set the dataPath on a component, and will also be re-run automatically whenever a canvas' parent changes due to a call to addChild(). This method handles automatically binding the component to the appropriate valuesManager if necessary.

      Note : This is an advanced setting

      Parameters:
        `dataPath` - new dataPath See `DataPath` . Default value is null

    - #### getDataPath

          public java.lang.String getDataPath()

      A dataPath may be specified on any canvas. This provides a straightforward way to display or edit complex nested data.

      For components which support displaying or editing data values, (such as `DynamicForm` or `ListGrid` components), the dataPath may be set to specify how the components data is accessed. In this case the dataPath essentially specifies a nested object to edit - typically a path to a field value within a dataSource record. Note that a ValuesManager will be required to handle connecting the dataBoundcomponent to the appropriate sub object. This may be explicitly specified on the component, or a parent of the component, or automatically generated if a DataSource is specified on either the component or a parent thereof.

      To provide a simple example - if a complex object existed with the following format:

            { companyName:"Some Company",
              address:{    street:"123 Main Street", city:"New York", state:"NY"  }
            }

      a developer could specify a DynamicForm instance with 'dataPath' set to "address" to edit the nested address object:

            isc.ValuesManager.create({
                 ID:'vm',
                 values: { companyName:"Some Company",
                         address:{    street:"123 Main Street", city:"New York", state:"NY"  }
                 }
            });

            isc.DynamicForm.create({
                 valuesManager:"vm",
                 dataPath:"address",
                 items:[{name:"street"}, {name:"city"}, {name:"state"}]
            });

      If a component is specified with a `dataPath` attribute but does not have an explicitly specified valuesManager, it will check its parent element chain for a specified valuesManager and automatically bind to that. This simplifies binding multiple components used to view or edit a nested data structure as the valuesManager needs only be defined once at a reasonably high level component. Here's an example of this approach:

            isc.ValuesManager.create({
                 ID:'vm',
                 values: { companyName:"Some Company",
                         address:{    street:"123 Main Street", city:"New York", state:"NY"  }
                 }
            });

            isc.Layout.create({
                 valuesManager:"vm",
                 members:[
                     isc.DynamicForm.create({
                         dataPath:"/",
                         items:[{name:"companyName"}]
                     }),
                     isc.DynamicForm.create({
                         dataPath:"address",
                         items:[{name:"street"}, {name:"city"}, {name:"state"}]
                     })
                 ]
            });

      Note that in this case the valuesManager is specified on a Layout, which has no 'values' management behavior of its own, but contains items with a specified dataPath which do. In this example you'd see 2 forms allowing editing of the nested data structure.

      dataPaths from multiple nested components may also be combined. For example:

            isc.ValuesManager.create({
                 ID:'vm',
                 values: { companyName:"Some Company",
                         address:{    street:"123 Main Street", city:"New York", state:"NY"  }
                         parentCompany:{
                             companyName:"Some Corporation",
                             address:{   street:"1 High Street", city:"New York", state:"NY" }
                         }
                 }
            });

            isc.Layout.create({
                 valuesManager:"vm",
                 members:[
                     isc.DynamicForm.create({
                         dataPath:"/",
                         items:[{name:"companyName"}]
                     }),
                     isc.DynamicForm.create({
                         dataPath:"address",
                         items:[{name:"street"}, {name:"city"}, {name:"state"}]
                     }),
                     isc.Layout.create({
                         dataPath:"parentCompany",
                         members:[
                             isc.DynamicForm.create({
                                 dataPath:"/",
                                 items:[{name:"companyName", type:"staticText"}]
                             }),
                             isc.DetailViewer.create({
                                 dataPath:"address",
                                 fields:[{name:"street", name:"city", name:"state"}]
                             })
                         ]
                     })
                 ]
            });

      In this example the detailViewer will display data from the `parentCompany.address` object within the base record.

      Note that if a component has a specified dataSource and shows child components with a specified dataPath, there is no need to explicitly declare a valuesManager at all. If a component with a dataPath has a dataSource, or an ancestor with a dataSource specified, it will, a valuesManager will automatically be generated on the higher level component (and be available as `component.valuesManager`).

      Returns:
        See `DataPath`

    - #### setDefaultHeight

          public void setDefaultHeight(int defaultHeight)

      For custom components, establishes a default height for the component.

      For a component that should potentially be sized automatically by a Layout, set this property rather than `height` directly, because Layouts regard a height setting as an explicit size that shouldn't be changed.

      Note : This is an advanced setting

      Parameters:
        `defaultHeight` - Default value is 100
      See Also:
        `Sizing overview and related methods`

    - #### getDefaultHeight

          public int getDefaultHeight()

      For custom components, establishes a default height for the component.

      For a component that should potentially be sized automatically by a Layout, set this property rather than `height` directly, because Layouts regard a height setting as an explicit size that shouldn't be changed.

      Returns:
        int
      See Also:
        `Sizing overview and related methods`

    - #### setDefaultWidth

          public void setDefaultWidth(int defaultWidth)

      For custom components, establishes a default width for the component.

      For a component that should potentially be sized automatically by a Layout, set this property rather than `width` directly, because Layouts regard a width setting as an explicit size that shouldn't be changed.

      Note : This is an advanced setting

      Parameters:
        `defaultWidth` - Default value is 100
      See Also:
        `Sizing overview and related methods`

    - #### getDefaultWidth

          public int getDefaultWidth()

      For custom components, establishes a default width for the component.

      For a component that should potentially be sized automatically by a Layout, set this property rather than `width` directly, because Layouts regard a width setting as an explicit size that shouldn't be changed.

      Returns:
        int
      See Also:
        `Sizing overview and related methods`

    - #### getDestroyed

          public java.lang.Boolean getDestroyed()
                                         throws java.lang.IllegalStateException

      If this property is set to `true`, the `destroy()` method has been called on this canvas. This implies the canvas is no longer valid. Its ID has been removed from global scope, and calling standard canvas APIs on it is likely to result in errors.

      Note : This method should be called only after the widget has been rendered.

      Returns:
        Boolean
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.
      See Also:
        `BaseWidget.destroy()`

    - #### getDestroying

          public java.lang.Boolean getDestroying()
                                          throws java.lang.IllegalStateException

      This property is set to true when the `destroy()` method is called on a widget. If this property is true, but `destroyed` is not, this indicates the canvas is in the process of being destroyed.

      Note : This method should be called only after the widget has been rendered.

      Returns:
        Boolean
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.
      See Also:
        `BaseWidget.destroy()`

    - #### setDisabledCursor

          public void setDisabledCursor(Cursor disabledCursor)

      Specifies the cursor image to display when the mouse pointer is over this widget if this widget is disabled. It corresponds to the CSS cursor attribute. See Cursor type for different cursors.

      Note : This is an advanced setting

      Parameters:
        `disabledCursor` - Default value is Canvas.DEFAULT
      See Also:
        `Cues overview and related methods`

    - #### getDisabledCursor

          public Cursor getDisabledCursor()

      Specifies the cursor image to display when the mouse pointer is over this widget if this widget is disabled. It corresponds to the CSS cursor attribute. See Cursor type for different cursors.
      Returns:
        Cursor
      See Also:
        `Cues overview and related methods`

    - #### setDisableTouchScrollingForDrag

          public void setDisableTouchScrollingForDrag(java.lang.Boolean disableTouchScrollingForDrag)
                                               throws java.lang.IllegalStateException

      Disables `useTouchScrolling` whenever a built-in drag operation has been enabled which is known to be non-functional if touch scrolling is enabled. Default behavior is to leave touch scrolling enabled even if it makes other enabled drag operations non-functional, since any `accessible` application must provide an alternative way to perform drag and drop operations anyway.

      `disableTouchScrollingForDrag` exists so that applications can change the default setting on a per-component basis (via `setDefaultProperties`), in order to make a system-wide or per-component-type decision about whether to favor touch scrolling vs retaining the ability to drag and drop via finger drags, instead of having to set `useTouchScrolling` on each individual instance.

      See the `Mobile Development overview` for more background information.

      Parameters:
        `disableTouchScrollingForDrag` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Scrolling overview and related methods`

    - #### getDisableTouchScrollingForDrag

          public java.lang.Boolean getDisableTouchScrollingForDrag()

      Disables `useTouchScrolling` whenever a built-in drag operation has been enabled which is known to be non-functional if touch scrolling is enabled. Default behavior is to leave touch scrolling enabled even if it makes other enabled drag operations non-functional, since any `accessible` application must provide an alternative way to perform drag and drop operations anyway.

      `disableTouchScrollingForDrag` exists so that applications can change the default setting on a per-component basis (via `setDefaultProperties`), in order to make a system-wide or per-component-type decision about whether to favor touch scrolling vs retaining the ability to drag and drop via finger drags, instead of having to set `useTouchScrolling` on each individual instance.

      See the `Mobile Development overview` for more background information.

      Returns:
        Boolean
      See Also:
        `Scrolling overview and related methods`

    - #### setDoubleClickDelay

          public void setDoubleClickDelay(int doubleClickDelay)

      Amount of time (in milliseconds) between which two clicks are considered a single click

      Note : This is an advanced setting

      Parameters:
        `doubleClickDelay` - Default value is 250

    - #### getDoubleClickDelay

          public int getDoubleClickDelay()

      Amount of time (in milliseconds) between which two clicks are considered a single click
      Returns:
        int

    - #### setDragAppearance

          public void setDragAppearance(DragAppearance dragAppearance)

      Visual appearance to show when the object is being dragged. May be overridden for dragResize or dragReposition events via `dragResizeAppearance` and `dragRepositionAppearance`.

      Note : This is an advanced setting

      Parameters:
        `dragAppearance` - Default value is EventHandler.OUTLINE
      See Also:
        `Dragdrop overview and related methods`

    - #### getDragAppearance

          public DragAppearance getDragAppearance()

      Visual appearance to show when the object is being dragged. May be overridden for dragResize or dragReposition events via `dragResizeAppearance` and `dragRepositionAppearance`.
      Returns:
        DragAppearance
      See Also:
        `Dragdrop overview and related methods`

    - #### setDragIntersectStyle

          public void setDragIntersectStyle(DragIntersectStyle dragIntersectStyle)

      This indicates how the system will test for droppable targets: either by intersection with the mouse or intersection with the rectangle of the dragMoveTarget.

      Note : This is an advanced setting

      Parameters:
        `dragIntersectStyle` - Default value is "mouse"
      See Also:
        `Dragdrop overview and related methods`

    - #### getDragIntersectStyle

          public DragIntersectStyle getDragIntersectStyle()

      This indicates how the system will test for droppable targets: either by intersection with the mouse or intersection with the rectangle of the dragMoveTarget.
      Returns:
        DragIntersectStyle
      See Also:
        `Dragdrop overview and related methods`

    - #### setDragMaskType

          public void setDragMaskType(DragMaskType dragMaskType)

      This property controls what kind of mask is used in case `useDragMask` is enabled.
      Parameters:
        `dragMaskType` - Default value is "div"
      See Also:
        `Dragdrop overview and related methods`

    - #### getDragMaskType

          public DragMaskType getDragMaskType()

      This property controls what kind of mask is used in case `useDragMask` is enabled.
      Returns:
        DragMaskType
      See Also:
        `Dragdrop overview and related methods`

    - #### setDragOpacity

          public void setDragOpacity(java.lang.Integer dragOpacity)

      If this widget has dragAppearance `"target"`, this value specifies the opacity to render the target while it is being dragged. A null value implies we do not modify the opacity.

      Note : This is an advanced setting

      Parameters:
        `dragOpacity` - Default value is null
      See Also:
        `Dragdrop overview and related methods`, Drag effects Example

    - #### getDragOpacity

          public java.lang.Integer getDragOpacity()

      If this widget has dragAppearance `"target"`, this value specifies the opacity to render the target while it is being dragged. A null value implies we do not modify the opacity.
      Returns:
        Integer
      See Also:
        `Dragdrop overview and related methods`, Drag effects Example

    - #### setDragRepositionAppearance

          public void setDragRepositionAppearance(DragAppearance dragRepositionAppearance)

      If `canDragReposition` is true, this attributes specifies the visual appearance to show during drag reposition. If unset `dragAppearance` will be used.

      Note : This is an advanced setting

      Parameters:
        `dragRepositionAppearance` - Default value is null
      See Also:
        `Dragdrop overview and related methods`

    - #### getDragRepositionAppearance

          public DragAppearance getDragRepositionAppearance()

      If `canDragReposition` is true, this attributes specifies the visual appearance to show during drag reposition. If unset `dragAppearance` will be used.
      Returns:
        DragAppearance
      See Also:
        `Dragdrop overview and related methods`

    - #### setDragRepositionCursor

          public void setDragRepositionCursor(Cursor dragRepositionCursor)

      Cursor to switch to if the mouse is over a widget that is drag repositionable.

      Note : This is an advanced setting

      Parameters:
        `dragRepositionCursor` - Default value is Canvas.MOVE
      See Also:
        `Dragdrop overview and related methods`

    - #### getDragRepositionCursor

          public Cursor getDragRepositionCursor()

      Cursor to switch to if the mouse is over a widget that is drag repositionable.
      Returns:
        Cursor
      See Also:
        `Dragdrop overview and related methods`

    - #### setDragResizeAppearance

          public void setDragResizeAppearance(DragAppearance dragResizeAppearance)

      If `canDragResize` is true, this attributes specifies the visual appearance to show during drag resize. If unset `dragAppearance` will be used.

      Note : This is an advanced setting

      Parameters:
        `dragResizeAppearance` - Default value is null
      See Also:
        `Dragdrop overview and related methods`

    - #### getDragResizeAppearance

          public DragAppearance getDragResizeAppearance()

      If `canDragResize` is true, this attributes specifies the visual appearance to show during drag resize. If unset `dragAppearance` will be used.
      Returns:
        DragAppearance
      See Also:
        `Dragdrop overview and related methods`

    - #### setDragScrollDelay

          public void setDragScrollDelay(int dragScrollDelay)

      If this widget supports drag-scrolling, This property specifies how many ms the user must hover over the drag-scroll threshold before scrolling begins.

      Note : This is an advanced setting

      Parameters:
        `dragScrollDelay` - Default value is 100

    - #### getDragScrollDelay

          public int getDragScrollDelay()

      If this widget supports drag-scrolling, This property specifies how many ms the user must hover over the drag-scroll threshold before scrolling begins.
      Returns:
        int

    - #### setDragStartDistance

          public void setDragStartDistance(int dragStartDistance)

      Number of pixels the cursor needs to move before the EventHandler starts a drag operation.

      Note : This is an advanced setting

      Parameters:
        `dragStartDistance` - Default value is 5
      See Also:
        `Dragdrop overview and related methods`

    - #### getDragStartDistance

          public int getDragStartDistance()

      Number of pixels the cursor needs to move before the EventHandler starts a drag operation.
      Returns:
        int
      See Also:
        `Dragdrop overview and related methods`

    - #### setDragType

          public void setDragType(java.lang.String dragType)

      Sets a `dragType` for this widget used, to be compared to `dropTypes` on possible drop target widgets. See `dropTypes` for a full explanation.

      Note : This is an advanced setting

      Parameters:
        `dragType` - Default value is null
      See Also:
        `Dragdrop overview and related methods`

    - #### getDragType

          public java.lang.String getDragType()

      Sets a `dragType` for this widget used, to be compared to `dropTypes` on possible drop target widgets. See `dropTypes` for a full explanation.
      Returns:
        String
      See Also:
        `Dragdrop overview and related methods`

    - #### setDropTypes

          public void setDropTypes(java.lang.String... dropTypes)

      When a drag and drop interaction occurs, if a `dragType` is configured on the source widget, it is compared to the `dropTypes` configured on the target widget, and a drop is only allowed if the `dragType` is listed in the target widget's `dropTypes` array.

      The default setting means any `dragType` is eligible for dropping on this widget, including no `dragType` setting.

      See also `willAcceptDrop()` for dynamic determination of drop eligibility.

      Note : This is an advanced setting

      Parameters:
        `dropTypes` - Default value is Canvas.ANYTHING
      See Also:
        `Dragdrop overview and related methods`

    - #### getDropTypes

          public java.lang.String[] getDropTypes()

      When a drag and drop interaction occurs, if a `dragType` is configured on the source widget, it is compared to the `dropTypes` configured on the target widget, and a drop is only allowed if the `dragType` is listed in the target widget's `dropTypes` array.

      The default setting means any `dragType` is eligible for dropping on this widget, including no `dragType` setting.

      See also `willAcceptDrop()` for dynamic determination of drop eligibility.

      Returns:
        String...
      See Also:
        `Dragdrop overview and related methods`

    - #### setDropTypes

          public void setDropTypes(java.lang.String dropTypes)

      When a drag and drop interaction occurs, if a `dragType` is configured on the source widget, it is compared to the `dropTypes` configured on the target widget, and a drop is only allowed if the `dragType` is listed in the target widget's `dropTypes` array.

      The default setting means any `dragType` is eligible for dropping on this widget, including no `dragType` setting.

      See also `willAcceptDrop()` for dynamic determination of drop eligibility.

      Note : This is an advanced setting

      Parameters:
        `dropTypes` - Default value is Canvas.ANYTHING
      See Also:
        `Dragdrop overview and related methods`

    - #### getDropTypesAsString

          public java.lang.String getDropTypesAsString()

      When a drag and drop interaction occurs, if a `dragType` is configured on the source widget, it is compared to the `dropTypes` configured on the target widget, and a drop is only allowed if the `dragType` is listed in the target widget's `dropTypes` array.

      The default setting means any `dragType` is eligible for dropping on this widget, including no `dragType` setting.

      See also `willAcceptDrop()` for dynamic determination of drop eligibility.

      Returns:
        String
      See Also:
        `Dragdrop overview and related methods`

    - #### setDynamicContents

          public void setDynamicContents(java.lang.Boolean dynamicContents)

      Dynamic contents allows the contents string to be treated as a simple, but powerful template. When this attribute is set to true, expressions of the form ${arbitrary JS here} are replaced by the result of the evaluation of the JS code inside the curly brackets. This evaluation happens at draw time. If you want to trigger a re-evaluation of the expressions in the contents string you can call markForRedraw() on the canvas.

      You can use this feature to build some simple custom components. For example, let's say you want to show the value of a Slider in a Canvas somewhere on the screen. You can do this by observing the valueChanged() method on the slider and calling setContents() on your canvas with the new string or you can set the contents of the canvas to something like:

      `"The slider value is ${sliderInstance.getValue()}."`

      Next you set dynamicContents: true on the canvas, observe valueChanged() on the slider and call canvas.markForRedraw() in that observation. This approach is cleaner than setContents() when the Canvas is aggregating several values or dynamic expressions. Like so:

            Slider.create({
                ID: "mySlider"
            });

            Canvas.create({
                ID: "myCanvas",
                dynamicContents: true,
                contents: "The slider value is ${mySlider.getValue()}."
            });

            myCanvas.observe(mySlider, "valueChanged",
                             "observer.markForRedraw()");

      You can embed an arbitrary number of dynamic expressions in the contents string. The search and replace is optimized for speed.

      If an error occurs during the evaluation of one of the expressions, a warning is logged to the ISC Developer Console and the error string is embedded in place of the expected value in the Canvas.

      The value of a function is its return value. The value of any variable is the same as that returned by its toString() representation.

      Inside the evaluation contentext, `this` points to the canvas instance that has the dynamicContents string as its contents - in other words the canvas instance on which the template is declared.

      Note : This is an advanced setting

      Parameters:
        `dynamicContents` - Default value is false
      See Also:
        `setContents(java.lang.String)`, `com.smartgwt.client.widgets.Canvas#setDynamicContentsVars`

    - #### getDynamicContents

          public java.lang.Boolean getDynamicContents()

      Dynamic contents allows the contents string to be treated as a simple, but powerful template. When this attribute is set to true, expressions of the form ${arbitrary JS here} are replaced by the result of the evaluation of the JS code inside the curly brackets. This evaluation happens at draw time. If you want to trigger a re-evaluation of the expressions in the contents string you can call markForRedraw() on the canvas.

      You can use this feature to build some simple custom components. For example, let's say you want to show the value of a Slider in a Canvas somewhere on the screen. You can do this by observing the valueChanged() method on the slider and calling setContents() on your canvas with the new string or you can set the contents of the canvas to something like:

      `"The slider value is ${sliderInstance.getValue()}."`

      Next you set dynamicContents: true on the canvas, observe valueChanged() on the slider and call canvas.markForRedraw() in that observation. This approach is cleaner than setContents() when the Canvas is aggregating several values or dynamic expressions. Like so:

            Slider.create({
                ID: "mySlider"
            });

            Canvas.create({
                ID: "myCanvas",
                dynamicContents: true,
                contents: "The slider value is ${mySlider.getValue()}."
            });

            myCanvas.observe(mySlider, "valueChanged",
                             "observer.markForRedraw()");

      You can embed an arbitrary number of dynamic expressions in the contents string. The search and replace is optimized for speed.

      If an error occurs during the evaluation of one of the expressions, a warning is logged to the ISC Developer Console and the error string is embedded in place of the expected value in the Canvas.

      The value of a function is its return value. The value of any variable is the same as that returned by its toString() representation.

      Inside the evaluation contentext, `this` points to the canvas instance that has the dynamicContents string as its contents - in other words the canvas instance on which the template is declared.

      Returns:
        Boolean
      See Also:
        `getContents()`, `com.smartgwt.client.widgets.Canvas#getDynamicContentsVars`

    - #### setEdgeBackgroundColor

          public void setEdgeBackgroundColor(java.lang.String edgeBackgroundColor)
                                      throws java.lang.IllegalStateException

      Background color for the EdgedCanvas created to decorate this component. This can be used to provide an underlying "tint" color for translucent edge media
      Parameters:
        `edgeBackgroundColor` - See `Color` . Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getEdgeBackgroundColor

          public java.lang.String getEdgeBackgroundColor()

      Background color for the EdgedCanvas created to decorate this component. This can be used to provide an underlying "tint" color for translucent edge media
      Returns:
        See `Color`

    - #### setEdgeCenterBackgroundColor

          public void setEdgeCenterBackgroundColor(java.lang.String edgeCenterBackgroundColor)
                                            throws java.lang.IllegalStateException

      Background color for the center section only. Can be used as a surrogate background color for the decorated Canvas, if the Canvas is set to partially overlap the edges and hence can't show a background color itself without occluding media.
      Parameters:
        `edgeCenterBackgroundColor` - See `Color` . Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getEdgeCenterBackgroundColor

          public java.lang.String getEdgeCenterBackgroundColor()

      Background color for the center section only. Can be used as a surrogate background color for the decorated Canvas, if the Canvas is set to partially overlap the edges and hence can't show a background color itself without occluding media.
      Returns:
        See `Color`

    - #### setEdgeImage

          public void setEdgeImage(java.lang.String edgeImage)
                            throws java.lang.IllegalStateException

      Base name of images for edges. Extensions for each corner or edge piece will be added to this image URL, before the extension. For example, with the default base name of "edge.gif", the top-left corner image will be "edge_TL.gif".

      The full list of extensions is: "_TL", "_TR", "_BL", "_BR", "_T", "_L", "_B", "_R", "_center".

      Parameters:
        `edgeImage` - See `SCImgURL` . Default value is "[SKIN]edge.gif"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        Edges Example

    - #### getEdgeImage

          public java.lang.String getEdgeImage()

      Base name of images for edges. Extensions for each corner or edge piece will be added to this image URL, before the extension. For example, with the default base name of "edge.gif", the top-left corner image will be "edge_TL.gif".

      The full list of extensions is: "_TL", "_TR", "_BL", "_BR", "_T", "_L", "_B", "_R", "_center".

      Returns:
        See `SCImgURL`
      See Also:
        Edges Example

    - #### setEdgeMarginSize

          public void setEdgeMarginSize(int edgeMarginSize)

      How far into the edge of an object do we consider the "edge" for drag resize purposes?

      Note : This is an advanced setting

      Parameters:
        `edgeMarginSize` - Default value is 5
      See Also:
        `Dragdrop overview and related methods`, Drag resize Example

    - #### getEdgeMarginSize

          public int getEdgeMarginSize()

      How far into the edge of an object do we consider the "edge" for drag resize purposes?
      Returns:
        int
      See Also:
        `Dragdrop overview and related methods`, Drag resize Example

    - #### setEdgeOffset

          public void setEdgeOffset(java.lang.Integer edgeOffset)
                             throws java.lang.IllegalStateException

      Amount the contained Canvas should be offset. Defaults to edgeSize; set to less than edgeSize to allow the contained Canvas to overlap the edge and corner media.
      Parameters:
        `edgeOffset` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        Corners Example

    - #### getEdgeOffset

          public java.lang.Integer getEdgeOffset()

      Amount the contained Canvas should be offset. Defaults to edgeSize; set to less than edgeSize to allow the contained Canvas to overlap the edge and corner media.
      Returns:
        Integer
      See Also:
        Corners Example

    - #### setEdgeOpacity

          public void setEdgeOpacity(java.lang.Integer edgeOpacity)
                              throws java.lang.IllegalStateException

      Opacity of the edges. Defaults to matching this.opacity. if `setOpacity()` is called on a Canvas where edgeOpacity is set, edgeOpacity will be considered a percentage of the parent's opacity (so 50% opaque parent plus edgeOpacity 50 means 25% opaque edges)
      If this method is called after the component has been drawn/initialized: Set the `edgeOpacity` and mark the canvas for redraw
      Parameters:
        `edgeOpacity` - new edge-opacity level. Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        Edges Example

    - #### getEdgeOpacity

          public java.lang.Integer getEdgeOpacity()

      Opacity of the edges. Defaults to matching this.opacity. if `setOpacity()` is called on a Canvas where edgeOpacity is set, edgeOpacity will be considered a percentage of the parent's opacity (so 50% opaque parent plus edgeOpacity 50 means 25% opaque edges)
      Returns:
        Integer
      See Also:
        Edges Example

    - #### setEdgeShowCenter

          public void setEdgeShowCenter(java.lang.Boolean edgeShowCenter)
                                 throws java.lang.IllegalStateException

      Whether to show media in the center section, that is, behind the decorated Canvas.
      Parameters:
        `edgeShowCenter` - Default value is false
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        Corners Example

    - #### getEdgeShowCenter

          public java.lang.Boolean getEdgeShowCenter()

      Whether to show media in the center section, that is, behind the decorated Canvas.
      Returns:
        Boolean
      See Also:
        Corners Example

    - #### setEdgeSize

          public void setEdgeSize(int edgeSize)
                           throws java.lang.IllegalStateException

      Size in pixels for corners and edges
      Parameters:
        `edgeSize` - Default value is 10
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        Edges Example

    - #### getEdgeSize

          public int getEdgeSize()

      Size in pixels for corners and edges
      Returns:
        int
      See Also:
        Edges Example

    - #### getEditNode

          public EditNode getEditNode()
                               throws java.lang.IllegalStateException

      The component's `EditNode` for a component that has been created by a `Palette` from a `PaletteNode`.

      Note : This method should be called only after the widget has been rendered.

      Returns:
        EditNode
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.

    - #### getEditProxy

          public EditProxy getEditProxy()
                                 throws java.lang.IllegalStateException

      An `EditProxy` controls the behaviors of a component when it is placed into `editing mode`.

      The `editProxy` AutoChild is created when a component is first placed into edit mode via `setEditMode()`.

      `editProxy` properties can be supplied on a `PaletteNode` or `EditNode` as `editProxyProperties`, but must be provided before the component is first placed into edit mode.

      Most editable components use a custom EditProxy. See the documentation for each class' `editProxyConstructor` to determine the class.

      For an overview of how to use and configure AutoChildren, see `Using AutoChildren`.

      Returns:
        EditProxy
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.
      See Also:
        `setEditMode(boolean)`

    - #### setEditProxyConstructor

          public void setEditProxyConstructor(java.lang.String editProxyConstructor)
                                       throws java.lang.IllegalStateException

      Default class used to construct the `EditProxy` for this component when the component is `first placed into edit mode`.
      Parameters:
        `editProxyConstructor` - See `SCClassName` . Default value is "CanvasEditProxy"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getEditProxyConstructor

          public java.lang.String getEditProxyConstructor()

      Default class used to construct the `EditProxy` for this component when the component is `first placed into edit mode`.
      Returns:
        See `SCClassName`

    - #### setExtraSpace

          public void setExtraSpace(int extraSpace)
                             throws java.lang.IllegalStateException

      When this Canvas is included as a member in a Layout, extra blank space that should be left after this member in a Layout.
      Parameters:
        `extraSpace` - Default value is 0
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `LayoutSpacer`, `LayoutMember overview and related methods`

    - #### getExtraSpace

          public int getExtraSpace()

      When this Canvas is included as a member in a Layout, extra blank space that should be left after this member in a Layout.
      Returns:
        int
      See Also:
        `LayoutSpacer`, `LayoutMember overview and related methods`

    - #### setGroupBorderCSS

          public void setGroupBorderCSS(java.lang.String groupBorderCSS)
                                 throws java.lang.IllegalStateException

      Sets the style for the grouping frame around the canvas. Only necessary when `isGroup` is set to true.
      Parameters:
        `groupBorderCSS` - Default value is "2px solid black"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Appearance overview and related methods`

    - #### getGroupBorderCSS

          public java.lang.String getGroupBorderCSS()

      Sets the style for the grouping frame around the canvas. Only necessary when `isGroup` is set to true.
      Returns:
        String
      See Also:
        `Appearance overview and related methods`

    - #### setGroupLabelBackgroundColor

          public void setGroupLabelBackgroundColor(java.lang.String groupLabelBackgroundColor)

      If set, the background color of the grouping label. Only applicable when `isGroup` is set to true.

      This corresponds to the CSS background-color property on the grouping label. You can set this property to an RGB value (e.g. #22AAFF) or a named color (e.g. red) from a list of browser supported color names.

      The getter for this attribute, `getGroupLabelBackgroundColor()`, returns the color that will actually be used; i.e. if groupLabelBackgroundColor is left unset or is set to null, then getGroupLabelBackgroundColor() returns the color string that will be used.
      If this method is called after the component has been drawn/initialized: Setter for `groupLabelBackgroundColor`.

      Parameters:
        `groupLabelBackgroundColor` - the new grouping label background color. See `CSSColor` . Default value is null
      See Also:
        `Appearance overview and related methods`

    - #### getGroupLabelBackgroundColor

          public java.lang.String getGroupLabelBackgroundColor()

      If set, the background color of the grouping label. Only applicable when `isGroup` is set to true.

      This corresponds to the CSS background-color property on the grouping label. You can set this property to an RGB value (e.g. #22AAFF) or a named color (e.g. red) from a list of browser supported color names.

      The getter for this attribute, `getGroupLabelBackgroundColor()`, returns the color that will actually be used; i.e. if groupLabelBackgroundColor is left unset or is set to null, then getGroupLabelBackgroundColor() returns the color string that will be used.

      Returns:
        See `CSSColor`
      See Also:
        `Appearance overview and related methods`

    - #### setGroupLabelStyleName

          public void setGroupLabelStyleName(java.lang.String groupLabelStyleName)
                                      throws java.lang.IllegalStateException

      Sets the style for the grouping label. Only necessary when `isGroup` is set to true.

      Note that `groupLabelBackgroundColor` overrides any background-color of this style.

      Parameters:
        `groupLabelStyleName` - See `CSSStyleName` . Default value is "groupLabel"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Appearance overview and related methods`

    - #### getGroupLabelStyleName

          public java.lang.String getGroupLabelStyleName()

      Sets the style for the grouping label. Only necessary when `isGroup` is set to true.

      Note that `groupLabelBackgroundColor` overrides any background-color of this style.

      Returns:
        See `CSSStyleName`
      See Also:
        `Appearance overview and related methods`

    - #### setGroupTitle

          public void setGroupTitle(java.lang.String groupTitle)

      The title/label for the grouping. Only applicable when `isGroup` is set to true.
      If this method is called after the component has been drawn/initialized: Setter for `groupTitle`.
      Parameters:
        `groupTitle` - The new title for the grouping. See `HTMLString` . Default value is null
      See Also:
        `Appearance overview and related methods`

    - #### getGroupTitle

          public java.lang.String getGroupTitle()

      The title/label for the grouping. Only applicable when `isGroup` is set to true.
      Returns:
        See `HTMLString`
      See Also:
        `Appearance overview and related methods`

    - #### setHeight

          public void setHeight(java.lang.Integer height)

      Size for this component's vertical dimension.

      Can be a number of pixels, or a percentage like "50%". See documentation for `width` for details on how percentage values are resolved actual size.

      Note that if `overflow` is set to "visible", this size is a minimum, and the component may overflow to show all content and/or children.

      If trying to establish a default height for a custom component, set `defaultHeight` instead.
      If this method is called after the component has been drawn/initialized: Resizes the widget vertically to the specified height (moves the bottom side of the widget). The height parameter can be expressed as a percentage of viewport size or as the number of pixels.

      NOTE: if you're setting multiple coordinates, use resizeTo() or setRect() instead

      Parameters:
        `height` - new height. Default value is null
      See Also:
        `Sizing overview and related methods`

    - #### getHeight

          public java.lang.Integer getHeight()

      Size for this component's vertical dimension.

      Can be a number of pixels, or a percentage like "50%". See documentation for `width` for details on how percentage values are resolved actual size.

      Note that if `overflow` is set to "visible", this size is a minimum, and the component may overflow to show all content and/or children.

      If trying to establish a default height for a custom component, set `defaultHeight` instead.

      Returns:
        Return the height of this object, in pixels.
      See Also:
        `Sizing overview and related methods`

    - #### setHeight

          public void setHeight(java.lang.String height)

      Size for this component's vertical dimension.

      Can be a number of pixels, or a percentage like "50%". See documentation for `width` for details on how percentage values are resolved actual size.

      Note that if `overflow` is set to "visible", this size is a minimum, and the component may overflow to show all content and/or children.

      If trying to establish a default height for a custom component, set `defaultHeight` instead.
      If this method is called after the component has been drawn/initialized: Resizes the widget vertically to the specified height (moves the bottom side of the widget). The height parameter can be expressed as a percentage of viewport size or as the number of pixels.

      NOTE: if you're setting multiple coordinates, use resizeTo() or setRect() instead

      Overrides:
        `setHeight` in class `com.google.gwt.user.client.ui.UIObject`
      Parameters:
        `height` - new height. Default value is null
      See Also:
        `Sizing overview and related methods`

    - #### setHideUsingDisplayNone

          public void setHideUsingDisplayNone(boolean hideUsingDisplayNone)
                                       throws java.lang.IllegalStateException

      When this widget is hidden (see `visibility` and `hide()`), should display:none be applied to the `outer element`?

      This setting is not supported for general use, but in certain cases, it has been shown that display:none is a work-around for browser bugs involving burn-through of iframes or plugins, where the content of the iframe or plugin may still be visible despite the containing widget being hidden.

      Note : This is an advanced setting

      Parameters:
        `hideUsingDisplayNone` - Default value is false
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Appearance overview and related methods`

    - #### getHideUsingDisplayNone

          public boolean getHideUsingDisplayNone()

      When this widget is hidden (see `visibility` and `hide()`), should display:none be applied to the `outer element`?

      This setting is not supported for general use, but in certain cases, it has been shown that display:none is a work-around for browser bugs involving burn-through of iframes or plugins, where the content of the iframe or plugin may still be visible despite the containing widget being hidden.

      Returns:
        boolean
      See Also:
        `Appearance overview and related methods`

    - #### setHoverAlign

          public void setHoverAlign(Alignment hoverAlign)

      If `this.showHover` is true, this property can be used to customize the alignment of content in the hover canvas.
      Parameters:
        `hoverAlign` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`

    - #### getHoverAlign

          public Alignment getHoverAlign()

      If `this.showHover` is true, this property can be used to customize the alignment of content in the hover canvas.
      Returns:
        Alignment
      See Also:
        `getShowHover()`

    - #### setHoverAutoDestroy

          public void setHoverAutoDestroy(java.lang.Boolean hoverAutoDestroy)

      If `this.showHover` is true and `getHoverComponent()` is implemented, should the hoverCanvas returned from it be automatically destroyed when it is hidden?

      The default of null indicates that the component will be automatically destroyed. Set to false to prevent this.

      Parameters:
        `hoverAutoDestroy` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`

    - #### getHoverAutoDestroy

          public java.lang.Boolean getHoverAutoDestroy()

      If `this.showHover` is true and `getHoverComponent()` is implemented, should the hoverCanvas returned from it be automatically destroyed when it is hidden?

      The default of null indicates that the component will be automatically destroyed. Set to false to prevent this.

      Returns:
        Boolean
      See Also:
        `getShowHover()`

    - #### setHoverDelay

          public void setHoverDelay(int hoverDelay)

      If `this.canHover` is true, how long should the mouse be kept over this widget before the hover event is fired
      Parameters:
        `hoverDelay` - Default value is 300
      See Also:
        `setCanHover(java.lang.Boolean)`, `HoverEvent`

    - #### getHoverDelay

          public int getHoverDelay()

      If `this.canHover` is true, how long should the mouse be kept over this widget before the hover event is fired
      Returns:
        int
      See Also:
        `getCanHover()`, `HoverEvent`

    - #### setHoverHeight

          public void setHoverHeight(java.lang.Integer hoverHeight)

      If `this.showHover` is true, this property can be used to customize the height of the hover canvas shown.
      Parameters:
        `hoverHeight` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`

    - #### getHoverHeight

          public java.lang.Integer getHoverHeight()

      If `this.showHover` is true, this property can be used to customize the height of the hover canvas shown.
      Returns:
        Integer
      See Also:
        `getShowHover()`

    - #### setHoverMoveWithMouse

          public void setHoverMoveWithMouse(java.lang.Boolean hoverMoveWithMouse)

      If `this.showHover` is true, should this widget's hover canvas be moved with the mouse while visible?
      Parameters:
        `hoverMoveWithMouse` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`

    - #### getHoverMoveWithMouse

          public java.lang.Boolean getHoverMoveWithMouse()

      If `this.showHover` is true, should this widget's hover canvas be moved with the mouse while visible?
      Returns:
        Boolean
      See Also:
        `getShowHover()`

    - #### setHoverOpacity

          public void setHoverOpacity(java.lang.Integer hoverOpacity)

      If `this.showHover` is true, should the hover canvas be shown with opacity other than 100?
      Parameters:
        `hoverOpacity` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`, Hovers / Tooltips Example

    - #### getHoverOpacity

          public java.lang.Integer getHoverOpacity()

      If `this.showHover` is true, should the hover canvas be shown with opacity other than 100?
      Returns:
        Integer
      See Also:
        `getShowHover()`, Hovers / Tooltips Example

    - #### setHoverStyle

          public void setHoverStyle(java.lang.String hoverStyle)

      If `this.showHover` is true, this property can be used to specify the css style to apply to the hover canvas.
      Parameters:
        `hoverStyle` - See `CSSStyleName` . Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`, Hovers / Tooltips Example

    - #### getHoverStyle

          public java.lang.String getHoverStyle()

      If `this.showHover` is true, this property can be used to specify the css style to apply to the hover canvas.
      Returns:
        See `CSSStyleName`
      See Also:
        `getShowHover()`, Hovers / Tooltips Example

    - #### setHoverVAlign

          public void setHoverVAlign(VerticalAlignment hoverVAlign)

      If `this.showHover` is true, this property can be used to customize the vertical alignment of content in the hover canvas.
      Parameters:
        `hoverVAlign` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`

    - #### getHoverVAlign

          public VerticalAlignment getHoverVAlign()

      If `this.showHover` is true, this property can be used to customize the vertical alignment of content in the hover canvas.
      Returns:
        VerticalAlignment
      See Also:
        `getShowHover()`

    - #### setHoverWidth

          public void setHoverWidth(java.lang.Integer hoverWidth)

      If `this.showHover` is true, this property can be used to customize the width of the hover canvas shown.
      Parameters:
        `hoverWidth` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`, Hovers / Tooltips Example

    - #### getHoverWidth

          public java.lang.Integer getHoverWidth()

      If `this.showHover` is true, this property can be used to customize the width of the hover canvas shown.
      Returns:
        Integer
      See Also:
        `getShowHover()`, Hovers / Tooltips Example

    - #### setHoverWrap

          public void setHoverWrap(java.lang.Boolean hoverWrap)

      If `this.showHover` is true, this property can be used to customize the whether content in the hover canvas is displayed in a single line, or wraps.
      Parameters:
        `hoverWrap` - Default value is null
      See Also:
        `setShowHover(java.lang.Boolean)`

    - #### getHoverWrap

          public java.lang.Boolean getHoverWrap()

      If `this.showHover` is true, this property can be used to customize the whether content in the hover canvas is displayed in a single line, or wraps.
      Returns:
        Boolean
      See Also:
        `getShowHover()`

    - #### setHtmlElement

          public void setHtmlElement(com.google.gwt.user.client.Element htmlElement)

      If specified as a pointer to an HTML element present in the DOM, this canvas will be rendered inside that element on `draw()`.

      NOTES:
      This feature is intended for temporary integration with legacy page architectures only; the native browser's reaction to DOM insertion is unspecified and unsupported. For consistent cross-browser layout and positioning semantics, use Canvas parents (especially Layouts) and use absolute positioning at top level.

      Persistence of htmlElement: If `htmlPosition` is set to `"replace"` the htmlElement will be removed from the DOM when the canvas is drawn - therefore the htmlElement attribute will be cleared at this time. Otherwise if a Canvas is clear()d and then draw()n again it will be rendered inside the same htmlElement.
      If a Canvas is added as a child to Canvas parent, its htmlElement will be dropped.

      `position` should typically be set to `"relative"` if the widget is to be rendered inline within a standard page.
      If this method is called after the component has been drawn/initialized: Setter for the `htmlElement`.

      Note : This is an advanced setting

      Overrides:
        `setHtmlElement` in class `BaseWidget`
      Parameters:
        `htmlElement` - New htmlElement for this canvas, or Null to clear the existing htmlElement. Default value is null
      See Also:
        `Positioning overview and related methods`

    - #### getHtmlElement

          public com.google.gwt.user.client.Element getHtmlElement()

      If specified as a pointer to an HTML element present in the DOM, this canvas will be rendered inside that element on `draw()`.

      NOTES:
      This feature is intended for temporary integration with legacy page architectures only; the native browser's reaction to DOM insertion is unspecified and unsupported. For consistent cross-browser layout and positioning semantics, use Canvas parents (especially Layouts) and use absolute positioning at top level.

      Persistence of htmlElement: If `htmlPosition` is set to `"replace"` the htmlElement will be removed from the DOM when the canvas is drawn - therefore the htmlElement attribute will be cleared at this time. Otherwise if a Canvas is clear()d and then draw()n again it will be rendered inside the same htmlElement.
      If a Canvas is added as a child to Canvas parent, its htmlElement will be dropped.

      `position` should typically be set to `"relative"` if the widget is to be rendered inline within a standard page.

      Returns:
        Element
      See Also:
        `Positioning overview and related methods`

    - #### setHtmlPosition

          public void setHtmlPosition(DrawPosition htmlPosition)

      If `htmlElement` is specified, this attribute specifies the position where the canvas should be inserted relative to the `htmlElement` in the DOM.
      If this method is called after the component has been drawn/initialized: Setter for the `htmlPosition`.

      Note : This is an advanced setting

      Parameters:
        `htmlPosition` - New htmlPosition for this canvas. Default value is "afterBegin"
      See Also:
        `Positioning overview and related methods`

    - #### getHtmlPosition

          public DrawPosition getHtmlPosition()

      If `htmlElement` is specified, this attribute specifies the position where the canvas should be inserted relative to the `htmlElement` in the DOM.
      Returns:
        DrawPosition
      See Also:
        `Positioning overview and related methods`

    - #### setIsGroup

          public void setIsGroup(boolean isGroup)
                          throws java.lang.IllegalStateException

      Should a grouping frame be shown around this canvas.
      Parameters:
        `isGroup` - Default value is false
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `setGroupBorderCSS(java.lang.String)`, `setGroupLabelStyleName(java.lang.String)`, `setGroupLabelBackgroundColor(java.lang.String)`

    - #### getIsGroup

          public boolean getIsGroup()

      Should a grouping frame be shown around this canvas.
      Returns:
        boolean
      See Also:
        `getGroupBorderCSS()`, `getGroupLabelStyleName()`, `getGroupLabelBackgroundColor()`

    - #### getIsPrinting

          public java.lang.Boolean getIsPrinting()
                                          throws java.lang.IllegalStateException

      This boolean flag will be set to true by framework logic while generating print HTML for this widget as a result to a call to `showPrintPreview()` (or just `getPrintHTML()`). Note that this flag is set recursively as parent widgets generate print HTML for their children.

      This is a read-only property and should not be modified by application code.

      Note : This method should be called only after the widget has been rendered.

      Returns:
        Boolean
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.

    - #### setIsSnapAlignCandidate

          public void setIsSnapAlignCandidate(java.lang.Boolean isSnapAlignCandidate)

      Flag to disable snapping to alignment against this Canvas when other Canvases dragged into the same parent when `childrenSnapAlign` is enabled on this Canvas' parent.
      Parameters:
        `isSnapAlignCandidate` - Default value is null

    - #### getIsSnapAlignCandidate

          public java.lang.Boolean getIsSnapAlignCandidate()

      Flag to disable snapping to alignment against this Canvas when other Canvases dragged into the same parent when `childrenSnapAlign` is enabled on this Canvas' parent.
      Returns:
        Boolean

    - #### setKeepInParentRect

          public void setKeepInParentRect(java.lang.Boolean keepInParentRect)

      Constrains drag-resizing and drag-repositioning of this canvas to either the rect of its parent (if set to true) or an arbitrary rect based its parent (if set to a [Left,Top,Width,Height] rect array). In the latter mode you may use negative offsets for left/top and a width/height greater than the visible or scroll width of the parent to allow positioning beyond the confines of the parent.

      If this canvas has no parent, constrains dragging to within the browser window.

      Affects target and outline dragAppearance, not tracker.

      Note: keepInParentRect affects only user drag interactions, not programmatic moves.

      Example use cases:
      `keepInParentRect: true` - confine to parent
      `keepInParentRect: [0, 0, 500, 500]` - confine to top left 500x500 region within parent
      `keepInParentRect: [0, 0, 10000, 10000]` - in combination with overflow: "auto", confine to parent, but allow moving off the right and bottom of the parent to force scrolling (and hence enlarge the scrollWidth of the parent).

      Note : This is an advanced setting

      Parameters:
        `keepInParentRect` - Default value is null
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### getKeepInParentRect

          public java.lang.Boolean getKeepInParentRect()

      Constrains drag-resizing and drag-repositioning of this canvas to either the rect of its parent (if set to true) or an arbitrary rect based its parent (if set to a [Left,Top,Width,Height] rect array). In the latter mode you may use negative offsets for left/top and a width/height greater than the visible or scroll width of the parent to allow positioning beyond the confines of the parent.

      If this canvas has no parent, constrains dragging to within the browser window.

      Affects target and outline dragAppearance, not tracker.

      Note: keepInParentRect affects only user drag interactions, not programmatic moves.

      Example use cases:
      `keepInParentRect: true` - confine to parent
      `keepInParentRect: [0, 0, 500, 500]` - confine to top left 500x500 region within parent
      `keepInParentRect: [0, 0, 10000, 10000]` - in combination with overflow: "auto", confine to parent, but allow moving off the right and bottom of the parent to force scrolling (and hence enlarge the scrollWidth of the parent).

      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### setKeepInParentRect

          public void setKeepInParentRect(java.lang.Integer... keepInParentRect)

      Constrains drag-resizing and drag-repositioning of this canvas to either the rect of its parent (if set to true) or an arbitrary rect based its parent (if set to a [Left,Top,Width,Height] rect array). In the latter mode you may use negative offsets for left/top and a width/height greater than the visible or scroll width of the parent to allow positioning beyond the confines of the parent.

      If this canvas has no parent, constrains dragging to within the browser window.

      Affects target and outline dragAppearance, not tracker.

      Note: keepInParentRect affects only user drag interactions, not programmatic moves.

      Example use cases:
      `keepInParentRect: true` - confine to parent
      `keepInParentRect: [0, 0, 500, 500]` - confine to top left 500x500 region within parent
      `keepInParentRect: [0, 0, 10000, 10000]` - in combination with overflow: "auto", confine to parent, but allow moving off the right and bottom of the parent to force scrolling (and hence enlarge the scrollWidth of the parent).

      Note : This is an advanced setting

      Parameters:
        `keepInParentRect` - Default value is null
      See Also:
        `Dragdrop overview and related methods`, Drag create Example

    - #### setLayoutAlign

          public void setLayoutAlign(Alignment layoutAlign)

      When this Canvas is included as a member in a Layout, layoutAlign controls alignment on the breadth axis of the layout. Default is "left" for a VLayout, "top" for an HLayout.
      Parameters:
        `layoutAlign` - Default value is null
      See Also:
        `LayoutMember overview and related methods`

    - #### getLayoutAlign

          public Alignment getLayoutAlign()

      When this Canvas is included as a member in a Layout, layoutAlign controls alignment on the breadth axis of the layout. Default is "left" for a VLayout, "top" for an HLayout.
      Returns:
        Alignment
      See Also:
        `LayoutMember overview and related methods`

    - #### setLayoutAlign

          public void setLayoutAlign(VerticalAlignment layoutAlign)

      When this Canvas is included as a member in a Layout, layoutAlign controls alignment on the breadth axis of the layout. Default is "left" for a VLayout, "top" for an HLayout.
      Parameters:
        `layoutAlign` - Default value is null
      See Also:
        `LayoutMember overview and related methods`

    - #### setLeavePageSpace

          public void setLeavePageSpace(java.lang.Integer leavePageSpace)

      If set, overrides the global `defaultPageSpace`.
      If this method is called after the component has been drawn/initialized: Setter for `leavePageSpace`.

      Note : This is an advanced setting

      Parameters:
        `leavePageSpace` - new value for `leavePageSpace`.. Default value is null
      See Also:
        `Positioning overview and related methods`

    - #### getLeavePageSpace

          public java.lang.Integer getLeavePageSpace()

      If set, overrides the global `defaultPageSpace`.
      Returns:
        Integer
      See Also:
        `Positioning overview and related methods`

    - #### setLeft

          public void setLeft(int left)

      Number of pixels the left side of the widget is offset to the right from its default drawing context (either its parent's topleft corner, or the document flow, depending on the value of the `position` property).

      Can also be set as a percentage, specified as a String ending in '%', eg, "50%". In this case the top coordinate is considered as a percentage of the specified width of the `parent`.
      If this method is called after the component has been drawn/initialized: Set the left coordinate of this object, relative to its enclosing context, in pixels. NOTE: if you're setting multiple coordinates, use setRect(), moveTo() or resizeTo() instead

      Parameters:
        `left` - new left coordinate. Default value is 0
      See Also:
        `Positioning overview and related methods`

    - #### getLeft

          public int getLeft()

      Number of pixels the left side of the widget is offset to the right from its default drawing context (either its parent's topleft corner, or the document flow, depending on the value of the `position` property).

      Can also be set as a percentage, specified as a String ending in '%', eg, "50%". In this case the top coordinate is considered as a percentage of the specified width of the `parent`.

      Returns:
        Return the left coordinate of this object, relative to its enclosing context, in pixels.
      See Also:
        `Positioning overview and related methods`

    - #### setLeft

          public void setLeft(java.lang.String left)

      Number of pixels the left side of the widget is offset to the right from its default drawing context (either its parent's topleft corner, or the document flow, depending on the value of the `position` property).

      Can also be set as a percentage, specified as a String ending in '%', eg, "50%". In this case the top coordinate is considered as a percentage of the specified width of the `parent`.
      If this method is called after the component has been drawn/initialized: Set the left coordinate of this object, relative to its enclosing context, in pixels. NOTE: if you're setting multiple coordinates, use setRect(), moveTo() or resizeTo() instead

      Parameters:
        `left` - new left coordinate. Default value is 0
      See Also:
        `Positioning overview and related methods`

    - #### setLocateChildrenBy

          public void setLocateChildrenBy(LocatorStrategy locateChildrenBy)

      Strategy to use when locating children in this canvas from an autoTest locator string.

      Note : This is an advanced setting

      Parameters:
        `locateChildrenBy` - Default value is null

    - #### getLocateChildrenBy

          public LocatorStrategy getLocateChildrenBy()

      Strategy to use when locating children in this canvas from an autoTest locator string.
      Returns:
        LocatorStrategy

    - #### setLocateChildrenType

          public void setLocateChildrenType(LocatorTypeStrategy locateChildrenType)

      `LocatorTypeStrategy` to use when finding children within this canvas.

      Note : This is an advanced setting

      Parameters:
        `locateChildrenType` - Default value is null

    - #### getLocateChildrenType

          public LocatorTypeStrategy getLocateChildrenType()

      `LocatorTypeStrategy` to use when finding children within this canvas.
      Returns:
        LocatorTypeStrategy

    - #### setLocatePeersBy

          public void setLocatePeersBy(LocatorStrategy locatePeersBy)

      Strategy to use when locating peers of this canvas from an autoTest locator string.

      Note : This is an advanced setting

      Parameters:
        `locatePeersBy` - Default value is null

    - #### getLocatePeersBy

          public LocatorStrategy getLocatePeersBy()

      Strategy to use when locating peers of this canvas from an autoTest locator string.
      Returns:
        LocatorStrategy

    - #### setLocatePeersType

          public void setLocatePeersType(LocatorTypeStrategy locatePeersType)

      `LocatorTypeStrategy` to use when finding peers of this canvas.

      Note : This is an advanced setting

      Parameters:
        `locatePeersType` - Default value is null

    - #### getLocatePeersType

          public LocatorTypeStrategy getLocatePeersType()

      `LocatorTypeStrategy` to use when finding peers of this canvas.
      Returns:
        LocatorTypeStrategy

    - #### setMargin

          public void setMargin(java.lang.Integer margin)

      Set the CSS Margin, in pixels, for this component. Margin provides blank space outside of the border.

      This property sets the same thickness of margin on every side. Differing per-side margins can be set in a CSS style and applied via `styleName`.

      Note that the specified size of the widget will be the size including the margin thickness on each side.
      If this method is called after the component has been drawn/initialized: Set the CSS Margin, in pixels, for this component. Margin provides blank space outside of the border.

      This property sets the same thickness of margin on every side. Differing per-side margins can be set in a CSS style and applied via `styleName`.

      Note that the specified size of the widget will be the size including the margin thickness on each side.

      Parameters:
        `margin` - new margin in pixels. Default value is null
      See Also:
        `Appearance overview and related methods`

    - #### getMargin

          public java.lang.Integer getMargin()

      Set the CSS Margin, in pixels, for this component. Margin provides blank space outside of the border.

      This property sets the same thickness of margin on every side. Differing per-side margins can be set in a CSS style and applied via `styleName`.

      Note that the specified size of the widget will be the size including the margin thickness on each side.

      Returns:
        Integer
      See Also:
        `Appearance overview and related methods`

    - #### getMasterElement

          public Canvas getMasterElement()
                                  throws java.lang.IllegalStateException

      Deprecated. In favor or `getMasterCanvas()` as of Smart GWT release 9.1
      This Canvas's "master" (the Canvas to which it was added as a peer), if any.

      Note : This method should be called only after the widget has been rendered.

      Returns:
        Canvas
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.
      See Also:
        `Containment overview and related methods`

    - #### setMatchElement

          public void setMatchElement(java.lang.Boolean matchElement)

      If `htmlElement` is specified, should this canvas initially be drawn at the same dimensions as the htmlElement?
      Note: setting this property will not force the canvas to resize if the element subsequently resizes (for example due to page reflow).

      Note : This is an advanced setting

      Parameters:
        `matchElement` - Default value is null

    - #### getMatchElement

          public java.lang.Boolean getMatchElement()

      If `htmlElement` is specified, should this canvas initially be drawn at the same dimensions as the htmlElement?
      Note: setting this property will not force the canvas to resize if the element subsequently resizes (for example due to page reflow).
      Returns:
        Boolean

    - #### setMaxHeight

          public void setMaxHeight(int maxHeight)

      Maximum height that this Canvas can be resized to.

      Note : This is an advanced setting

      Parameters:
        `maxHeight` - Default value is 10000
      See Also:
        `Sizing overview and related methods`

    - #### getMaxHeight

          public int getMaxHeight()

      Maximum height that this Canvas can be resized to.
      Returns:
        int
      See Also:
        `Sizing overview and related methods`

    - #### setMaxWidth

          public void setMaxWidth(int maxWidth)

      Maximum width that this Canvas can be resized to.

      Note : This is an advanced setting

      Parameters:
        `maxWidth` - Default value is 10000
      See Also:
        `Sizing overview and related methods`

    - #### getMaxWidth

          public int getMaxWidth()

      Maximum width that this Canvas can be resized to.
      Returns:
        int
      See Also:
        `Sizing overview and related methods`

    - #### setMenuConstructor

          public void setMenuConstructor(java.lang.String menuConstructor)
                                  throws java.lang.IllegalStateException

      Default class used to construct menus created by this component, including context menus.
      Parameters:
        `menuConstructor` - See `SCClassName` . Default value is "Menu"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `ShowContextMenuEvent`, `Cues overview and related methods`

    - #### getMenuConstructor

          public java.lang.String getMenuConstructor()

      Default class used to construct menus created by this component, including context menus.
      Returns:
        See `SCClassName`
      See Also:
        `ShowContextMenuEvent`, `Cues overview and related methods`

    - #### setMinHeight

          public void setMinHeight(int minHeight)

      Minimum height that this Canvas can be resized to by a user.

      Note that a Canvas with overflow:"visible" has an implicit minimum size based on it's contents.

      Note that `minHeight` affects only user-initiated drag resizes. To set the minimum height of a Canvas embedded in a Layout, you can set `Layout.minMemberSize` to affect the minimum height of all members of the Layout.

      Note : This is an advanced setting

      Parameters:
        `minHeight` - Default value is 10
      See Also:
        `Sizing overview and related methods`

    - #### getMinHeight

          public int getMinHeight()

      Minimum height that this Canvas can be resized to by a user.

      Note that a Canvas with overflow:"visible" has an implicit minimum size based on it's contents.

      Note that `minHeight` affects only user-initiated drag resizes. To set the minimum height of a Canvas embedded in a Layout, you can set `Layout.minMemberSize` to affect the minimum height of all members of the Layout.

      Returns:
        int
      See Also:
        `Sizing overview and related methods`

    - #### setMinNonEdgeSize

          public void setMinNonEdgeSize(int minNonEdgeSize)

      If the widget has drag resize configured on one or more of it's edges, and the edgeMarginSize is large enough that the remaining space is less than `minNonEdgeSize`, the edgeMarginSize will be reduced such that the non-edge part of the widget is at least 1/3 of the total space (with two draggable edges) or half of it (with one draggable edge).

      Note : This is an advanced setting

      Parameters:
        `minNonEdgeSize` - Default value is 0
      See Also:
        `Dragdrop overview and related methods`, Drag resize Example

    - #### getMinNonEdgeSize

          public int getMinNonEdgeSize()

      If the widget has drag resize configured on one or more of it's edges, and the edgeMarginSize is large enough that the remaining space is less than `minNonEdgeSize`, the edgeMarginSize will be reduced such that the non-edge part of the widget is at least 1/3 of the total space (with two draggable edges) or half of it (with one draggable edge).
      Returns:
        int
      See Also:
        `Dragdrop overview and related methods`, Drag resize Example

    - #### setMinWidth

          public void setMinWidth(int minWidth)

      Minimum width that this Canvas can be resized to.

      Note that a Canvas with overflow:"visible" has an implicit minimize size based on it's contents.

      Note that `minWidth` affects only user-initiated drag resizes. To set the minimum width of a Canvas embedded in a Layout, you can set `Layout.minMemberSize` to affect the minimum width of all members of the Layout.

      Note : This is an advanced setting

      Parameters:
        `minWidth` - Default value is 10
      See Also:
        `Sizing overview and related methods`

    - #### getMinWidth

          public int getMinWidth()

      Minimum width that this Canvas can be resized to.

      Note that a Canvas with overflow:"visible" has an implicit minimize size based on it's contents.

      Note that `minWidth` affects only user-initiated drag resizes. To set the minimum width of a Canvas embedded in a Layout, you can set `Layout.minMemberSize` to affect the minimum width of all members of the Layout.

      Returns:
        int
      See Also:
        `Sizing overview and related methods`

    - #### setMomentumScrollMinSpeed

          public void setMomentumScrollMinSpeed(double momentumScrollMinSpeed)

      The minimum speed in pixels per second that must be reached for momentum scrolling to kick in. This setting only applies to touch-enabled devices.

      Note : This is an advanced setting

      Parameters:
        `momentumScrollMinSpeed` - Default value is 200

    - #### getMomentumScrollMinSpeed

          public double getMomentumScrollMinSpeed()

      The minimum speed in pixels per second that must be reached for momentum scrolling to kick in. This setting only applies to touch-enabled devices.
      Returns:
        double

    - #### setMouseStillDownDelay

          public void setMouseStillDownDelay(int mouseStillDownDelay)

      Amount of time (in milliseconds) between repeated 'mouseStillDown' events for this canvas. See `Canvas.mouseStillDown()` for details.

      Note : This is an advanced setting

      Parameters:
        `mouseStillDownDelay` - Default value is 100

    - #### getMouseStillDownDelay

          public int getMouseStillDownDelay()

      Amount of time (in milliseconds) between repeated 'mouseStillDown' events for this canvas. See `Canvas.mouseStillDown()` for details.
      Returns:
        int

    - #### setMouseStillDownInitialDelay

          public void setMouseStillDownInitialDelay(int mouseStillDownInitialDelay)

      Amount of time (in milliseconds) before mouseStillDown events start to be fired repeatedly for this canvas. See `Canvas.mouseStillDown()` for details.

      Note : This is an advanced setting

      Parameters:
        `mouseStillDownInitialDelay` - Default value is 400

    - #### getMouseStillDownInitialDelay

          public int getMouseStillDownInitialDelay()

      Amount of time (in milliseconds) before mouseStillDown events start to be fired repeatedly for this canvas. See `Canvas.mouseStillDown()` for details.
      Returns:
        int

    - #### setNoDoubleClicks

          public void setNoDoubleClicks(java.lang.Boolean noDoubleClicks)

      If true, this canvas will receive all mouse-clicks as single `click` events rather than as `doubleClick` events.

      Note : This is an advanced setting

      Parameters:
        `noDoubleClicks` - Default value is null

    - #### getNoDoubleClicks

          public java.lang.Boolean getNoDoubleClicks()

      If true, this canvas will receive all mouse-clicks as single `click` events rather than as `doubleClick` events.
      Returns:
        Boolean

    - #### setNoDropCursor

          public void setNoDropCursor(Cursor noDropCursor)

      Specifies the cursor image to display when the user drags a droppable canvas over this if it is not a valid drop target for the event and `showNoDropIndicator` is true.

      Note : This is an advanced setting

      Parameters:
        `noDropCursor` - Default value is Canvas.NOT_ALLOWED
      See Also:
        `Cues overview and related methods`

    - #### getNoDropCursor

          public Cursor getNoDropCursor()

      Specifies the cursor image to display when the user drags a droppable canvas over this if it is not a valid drop target for the event and `showNoDropIndicator` is true.
      Returns:
        Cursor
      See Also:
        `Cues overview and related methods`

    - #### setOpacity

          public void setOpacity(java.lang.Integer opacity)

      Renders the widget to be partly transparent. A widget's opacity property may be set to any number between 0 (transparent) to 100 (opaque). Null means don't specify opacity directly, 100 is fully opaque. Note that heavy use of opacity may have a performance impact on some older browsers.

      In older versions of Internet Explorer (Pre IE9 / HTML5), opacity is achieved through proprietary filters. If `filters have been disabled` within this application developers must set `useOpacityFilter` to true for specific components on which opacity support is required.

      Also note that opacity is incompatible with `backMasks`.
      If this method is called after the component has been drawn/initialized: Sets the opacity for the widget to the newOpacity value. This newOpacity value must be within the range of 0 (transparent) to 100 (opaque). Null means don't specify opacity directly. Note that heavy use of opacity may have a performance impact on some older browsers.

      In older versions of Internet Explorer (Pre IE9 / HTML5), opacity is achieved through proprietary filters. If `filters have been disabled` within this application developers must set `useOpacityFilter` to true for specific components on which opacity support is required.

      Also note that opacity is incompatible with `backMasks`.

      Note : This is an advanced setting

      Parameters:
        `opacity` - new opacity level. Default value is null
      See Also:
        `Cues overview and related methods`

    - #### getOpacity

          public java.lang.Integer getOpacity()

      Renders the widget to be partly transparent. A widget's opacity property may be set to any number between 0 (transparent) to 100 (opaque). Null means don't specify opacity directly, 100 is fully opaque. Note that heavy use of opacity may have a performance impact on some older browsers.

      In older versions of Internet Explorer (Pre IE9 / HTML5), opacity is achieved through proprietary filters. If `filters have been disabled` within this application developers must set `useOpacityFilter` to true for specific components on which opacity support is required.

      Also note that opacity is incompatible with `backMasks`.

      Returns:
        Integer
      See Also:
        `Cues overview and related methods`

    - #### setOverflow

          public void setOverflow(Overflow overflow)

      Controls what happens when the drawn size of the content of a Canvas is either greater or smaller than the specified size of the Canvas. Similar to the CSS property overflow, but consistent across browsers. See Overflow type for details.
      If this method is called after the component has been drawn/initialized: Update the `overflow` of a Canvas after it has been created.
      Parameters:
        `overflow` - New overflow value.. Default value is Canvas.VISIBLE
      See Also:
        `Sizing overview and related methods`

    - #### getOverflow

          public Overflow getOverflow()

      Controls what happens when the drawn size of the content of a Canvas is either greater or smaller than the specified size of the Canvas. Similar to the CSS property overflow, but consistent across browsers. See Overflow type for details.
      Returns:
        Overflow
      See Also:
        `Sizing overview and related methods`

    - #### setPadding

          public void setPadding(java.lang.Integer padding)

      Set the CSS padding of this component, in pixels. Padding provides space between the border and the component's contents.

      This property sets the same thickness of padding on every side. Differing per-side padding can be set in a CSS style and applied via `styleName`.

      Note that CSS padding does not affect the placement of `children`. To provide a blank area around children, either use `CSS margins` or use a `Layout` as the parent instead, and use properties such as `Layout.layoutMargin` to create blank space.
      If this method is called after the component has been drawn/initialized: Set the CSS padding of this component, in pixels. Padding provides space between the border and the component's contents.

      This property sets the same thickness of padding on every side. Differing per-side padding can be set in a CSS style and applied via `styleName`.

      Parameters:
        `padding` - new padding in pixels. Default value is null
      See Also:
        `Appearance overview and related methods`

    - #### getPadding

          public java.lang.Integer getPadding()

      Set the CSS padding of this component, in pixels. Padding provides space between the border and the component's contents.

      This property sets the same thickness of padding on every side. Differing per-side padding can be set in a CSS style and applied via `styleName`.

      Note that CSS padding does not affect the placement of `children`. To provide a blank area around children, either use `CSS margins` or use a `Layout` as the parent instead, and use properties such as `Layout.layoutMargin` to create blank space.

      Returns:
        Integer
      See Also:
        `Appearance overview and related methods`

    - #### setParentCanvas

          public void setParentCanvas(Canvas parentCanvas)
                               throws java.lang.IllegalStateException

      This Canvas's immediate parent, if any.
      Can be initialized, but any subsequent manipulation should be via `addChild()` and `removeChild()` calls on the parent. The parent Canvas should be fetched using `getParentCanvas()`.
      Parameters:
        `parentCanvas` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Containment overview and related methods`

    - #### getParentCanvas

          public Canvas getParentCanvas()

      This Canvas's immediate parent, if any.
      Can be initialized, but any subsequent manipulation should be via `addChild()` and `removeChild()` calls on the parent. The parent Canvas should be fetched using `getParentCanvas()`.
      Returns:
        Returns the parent of this canvas, if any.
      See Also:
        `Containment overview and related methods`

    - #### setParentElement

          public void setParentElement(Canvas parentElement)
                                throws java.lang.IllegalStateException

      Deprecated. As of Smartclient version 9.1, deprecated in favor of `parentCanvas` and `getParentCanvas()`
      This Canvas's immediate parent, if any.
      Can be initialized, but any subsequent manipulation should be via `addChild()` and `removeChild()` calls on the parent.

      Note : This is an advanced setting

      Parameters:
        `parentElement` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Containment overview and related methods`

    - #### getParentElement

          public Canvas getParentElement()

      Deprecated. As of Smartclient version 9.1, deprecated in favor of `parentCanvas` and `getParentCanvas()`
      This Canvas's immediate parent, if any.
      Can be initialized, but any subsequent manipulation should be via `addChild()` and `removeChild()` calls on the parent.
      Returns:
        Canvas
      See Also:
        `Containment overview and related methods`

    - #### setPeers

          public void setPeers(Canvas... peers)
                        throws java.lang.IllegalStateException

      Array of all Canvii that are peers of this Canvas.

      Use `addPeer()` and `removePeer()` to add and remove peers after a Canvas has been created/drawn.

      Note : This is an advanced setting

      Parameters:
        `peers` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Containment overview and related methods`

    - #### getPeers

          public Canvas[] getPeers()

      Array of all Canvii that are peers of this Canvas.

      Use `addPeer()` and `removePeer()` to add and remove peers after a Canvas has been created/drawn.

      Returns:
        Canvas...
      See Also:
        `Containment overview and related methods`

    - #### setPercentBox

          public void setPercentBox(PercentBoxModel percentBox)
                             throws java.lang.IllegalStateException

      Governs the model to be used when sizing canvases with percentage width or height, or positioning widgets with a specified `snapTo`.

      Only affects widgets with a a specified `percentSource`, or widgets that have `snapTo` set and are peers of some `other canvas`.

      Determines whether the coordinates used for sizing (for percentage sized widgets) and positioning (if `snapTo` is set) should be relative to the visible size or the viewport size of the percentSource or `master canvas` widget.

      Note : This is an advanced setting

      Parameters:
        `percentBox` - Default value is "visible"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Sizing overview and related methods`

    - #### getPercentBox

          public PercentBoxModel getPercentBox()

      Governs the model to be used when sizing canvases with percentage width or height, or positioning widgets with a specified `snapTo`.

      Only affects widgets with a a specified `percentSource`, or widgets that have `snapTo` set and are peers of some `other canvas`.

      Determines whether the coordinates used for sizing (for percentage sized widgets) and positioning (if `snapTo` is set) should be relative to the visible size or the viewport size of the percentSource or `master canvas` widget.

      Returns:
        PercentBoxModel
      See Also:
        `Sizing overview and related methods`

    - #### setPercentSource

          public void setPercentSource(Canvas percentSource)

      If this canvas has its size specified as a percentage, this property allows the user to explicitly designate another canvas upon which sizing will be based.

      If unset percentage sizing is based on
      - the `master canvas` if there is one and `snapTo` is set,
      - otherwise on the amount of space available in this widget's parent canvas, if this is a child of some other widget
      - otherwise the page size.
      If this method is called after the component has been drawn/initialized: Setter method for the `percentSource` attribute.

      Note : This is an advanced setting

      Parameters:
        `percentSource` - eterNew percent source (if omitted existing percentSource will just be cleared).. Default value is null
      See Also:
        `setPercentBox(com.smartgwt.client.types.PercentBoxModel)`, `Sizing overview and related methods`

    - #### getPercentSource

          public Canvas getPercentSource()

      If this canvas has its size specified as a percentage, this property allows the user to explicitly designate another canvas upon which sizing will be based.

      If unset percentage sizing is based on
      - the `master canvas` if there is one and `snapTo` is set,
      - otherwise on the amount of space available in this widget's parent canvas, if this is a child of some other widget
      - otherwise the page size.

      Returns:
        Canvas
      See Also:
        `getPercentBox()`, `Sizing overview and related methods`

    - #### setPosition

          public void setPosition(Positioning position)

      Absolute or relative, corresponding to the "absolute" (with respect to parent) or "relative" (with respect to document flow) values for the CSS position attribute.

      Setting `position:"relative"` enables Smart GWT components to be embedded directly into the native HTML flow of a page, causing the component to be rendered within an existing DOM structure. This attribute should only be set to `"relative"` on a top level component (a component with no `getParentCanvas()`).

      There are 2 ways to embed relatively positioned canvases in the DOM - by default the component will be written out inline when it gets `drawn()n`. For example to embed a canvas in an HTML table you could use this code:

            <table>
              <tr>
                <td>
                  <script>
                    isc.Canvas.create({autoDraw:true, backgroundColor:"red", position:"relative"});
                  </script>
                <td>
              </tr>
            </table>

      Alternatively you can make use of the `htmlElement` attribute.

      Relative positioning is intended as a short-term integration scenario while incrementally upgrading existing applications. Note that relative positioning is not used to manage layout within Smart GWT components - instead the `Layout` class would typically be used. For best consistency and flexibility across browsers, all Smart GWT layout managers use absolute positioning.

      For canvases with a specified `htmlElement`, this attribute defaults to `"relative"`. In all other cases the default value will be `"absolute"`.

      Note : This is an advanced setting

      Parameters:
        `position` - Default value is null
      See Also:
        `Positioning overview and related methods`

    - #### getPosition

          public Positioning getPosition()

      Absolute or relative, corresponding to the "absolute" (with respect to parent) or "relative" (with respect to document flow) values for the CSS position attribute.

      Setting `position:"relative"` enables Smart GWT components to be embedded directly into the native HTML flow of a page, causing the component to be rendered within an existing DOM structure. This attribute should only be set to `"relative"` on a top level component (a component with no `getParentCanvas()`).

      There are 2 ways to embed relatively positioned canvases in the DOM - by default the component will be written out inline when it gets `drawn()n`. For example to embed a canvas in an HTML table you could use this code:

            <table>
              <tr>
                <td>
                  <script>
                    isc.Canvas.create({autoDraw:true, backgroundColor:"red", position:"relative"});
                  </script>
                <td>
              </tr>
            </table>

      Alternatively you can make use of the `htmlElement` attribute.

      Relative positioning is intended as a short-term integration scenario while incrementally upgrading existing applications. Note that relative positioning is not used to manage layout within Smart GWT components - instead the `Layout` class would typically be used. For best consistency and flexibility across browsers, all Smart GWT layout managers use absolute positioning.

      For canvases with a specified `htmlElement`, this attribute defaults to `"relative"`. In all other cases the default value will be `"absolute"`.

      Returns:
        Positioning
      See Also:
        `Positioning overview and related methods`

    - #### setPrintChildrenAbsolutelyPositioned

          public void setPrintChildrenAbsolutelyPositioned(java.lang.Boolean printChildrenAbsolutelyPositioned)

      Should this canvas print its children absolutely positioned when generating `printable HTML`.

      By default explicitly specified absolute positioning and sizing is ignored when generating print HTML. This is done intentionally: there is no way for the framework to predict how explicit sizes will translate to a the printed page and if HTML for printing includes the same absolute positioning and sizing as is displayed within an application it is very common to encounter undesirable effects, such as seeing tables get broken over several pages horizontally when there is enough room to print them on a single page of paper.

      In some cases, however, a developer may wish to have explicit sizing and positioning respected within the print-view. Setting this attribute to `true` will cause this to occur.

      Note : This is an advanced setting

      Parameters:
        `printChildrenAbsolutelyPositioned` - Default value is false
      See Also:
        `Printing overview and related methods`

    - #### getPrintChildrenAbsolutelyPositioned

          public java.lang.Boolean getPrintChildrenAbsolutelyPositioned()

      Should this canvas print its children absolutely positioned when generating `printable HTML`.

      By default explicitly specified absolute positioning and sizing is ignored when generating print HTML. This is done intentionally: there is no way for the framework to predict how explicit sizes will translate to a the printed page and if HTML for printing includes the same absolute positioning and sizing as is displayed within an application it is very common to encounter undesirable effects, such as seeing tables get broken over several pages horizontally when there is enough room to print them on a single page of paper.

      In some cases, however, a developer may wish to have explicit sizing and positioning respected within the print-view. Setting this attribute to `true` will cause this to occur.

      Returns:
        Boolean
      See Also:
        `Printing overview and related methods`

    - #### setPrompt

          public void setPrompt(java.lang.String prompt)

      Prompt displayed in hover canvas if `showHover` is true.
      Parameters:
        `prompt` - See `HTMLString` . Default value is null
      See Also:
        Hovers / Tooltips Example

    - #### getPrompt

          public java.lang.String getPrompt()

      Prompt displayed in hover canvas if `showHover` is true.
      Returns:
        See `HTMLString`
      See Also:
        Hovers / Tooltips Example

    - #### setProportionalResizing

          public void setProportionalResizing(ProportionalResizeMode proportionalResizing)
                                       throws java.lang.IllegalStateException

      If `canDragResize` is true, this property specifies the conditions for when proportional resizing is used. The default is `ProportionalResizeMode.MODIFIER_OFF` , which means that proportional resizing is disabled.
      Parameters:
        `proportionalResizing` - Default value is "none"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `setProportionalResizeModifiers(java.lang.String...)`, `Dragdrop overview and related methods`

    - #### getProportionalResizing

          public ProportionalResizeMode getProportionalResizing()

      If `canDragResize` is true, this property specifies the conditions for when proportional resizing is used. The default is `ProportionalResizeMode.MODIFIER_OFF` , which means that proportional resizing is disabled.
      Returns:
        ProportionalResizeMode
      See Also:
        `getProportionalResizeModifiers()`, `Dragdrop overview and related methods`

    - #### setRedrawOnResize

          public void setRedrawOnResize(java.lang.Boolean redrawOnResize)

      Should this element be redrawn in response to a resize?

      Should be set to true for components whose `inner HTML` will not automatically reflow to fit the component's new size.

      Note : This is an advanced setting

      Parameters:
        `redrawOnResize` - Default value is true
      See Also:
        `Drawing overview and related methods`

    - #### getRedrawOnResize

          public java.lang.Boolean getRedrawOnResize()

      Should this element be redrawn in response to a resize?

      Should be set to true for components whose `inner HTML` will not automatically reflow to fit the component's new size.

      Returns:
        Boolean
      See Also:
        `Drawing overview and related methods`

    - #### setResizeBarTarget

          public void setResizeBarTarget(java.lang.String resizeBarTarget)
                                  throws java.lang.IllegalStateException

      When this Canvas is included as a member in a Layout, and `showResizeBar` is set to `true` so that a resizeBar is created, `resizeBarTarget:"next"` can be set to indicate that the resizeBar should resize the next member of the layout rather than this one. For resizeBars that support hiding their target member when clicked on, `resizeBarTarget:"next"` also means that the next member will be the one hidden.

      This is typically used to create a 3-way split pane, where left and right-hand sections can be resized or hidden to allow a center section to expand.

      NOTE: as with any Layout, to ensure all available space is used, one or more members must maintain a flexible size (eg 75%, or *). In a two pane Layout with a normal resize bar, to fill all space after a user resizes, the member on the right should have flexible size. With resizeBarTarget:"next", the member on the left should have flexible size.

      Parameters:
        `resizeBarTarget` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `setShowResizeBar(java.lang.Boolean)`, `LayoutMember overview and related methods`

    - #### getResizeBarTarget

          public java.lang.String getResizeBarTarget()

      When this Canvas is included as a member in a Layout, and `showResizeBar` is set to `true` so that a resizeBar is created, `resizeBarTarget:"next"` can be set to indicate that the resizeBar should resize the next member of the layout rather than this one. For resizeBars that support hiding their target member when clicked on, `resizeBarTarget:"next"` also means that the next member will be the one hidden.

      This is typically used to create a 3-way split pane, where left and right-hand sections can be resized or hidden to allow a center section to expand.

      NOTE: as with any Layout, to ensure all available space is used, one or more members must maintain a flexible size (eg 75%, or *). In a two pane Layout with a normal resize bar, to fill all space after a user resizes, the member on the right should have flexible size. With resizeBarTarget:"next", the member on the left should have flexible size.

      Returns:
        String
      See Also:
        `getShowResizeBar()`, `LayoutMember overview and related methods`

    - #### setResizeFrom

          public void setResizeFrom(EdgeName... resizeFrom)

      When drag resizing is enabled via `canDragResize`, restricts resizes to only certain edges or corners.

      The default of null indicates the widget can be resized from any corner or edge (if `canDragResize` is true).

      To restrict resizing to only certain corners, set `resizeFrom` to an Array of `EdgeName`s.

      Note : This is an advanced setting

      Parameters:
        `resizeFrom` - Default value is null
      See Also:
        `Dragdrop overview and related methods`, Drag resize Example

    - #### getResizeFrom

          public EdgeName[] getResizeFrom()

      When drag resizing is enabled via `canDragResize`, restricts resizes to only certain edges or corners.

      The default of null indicates the widget can be resized from any corner or edge (if `canDragResize` is true).

      To restrict resizing to only certain corners, set `resizeFrom` to an Array of `EdgeName`s.

      Returns:
        EdgeName...
      See Also:
        `Dragdrop overview and related methods`, Drag resize Example

    - #### setScrollbarConstructor

          public void setScrollbarConstructor(java.lang.String scrollbarConstructor)
                                       throws java.lang.IllegalStateException

      The class that will be used to create custom scrollbars for this component. Set this attribute to a Scrollbar subclass with e.g. a different skinImgDir, to customize scrollbar appearance for this component only.

      When `spriting is enabled` and supported by the skin, the default `scrollbarConstructor` is changed to a different scrollbar class which handles scrollbar spriting. Spriting of the scrollbars of an individual component can therefore be disabled by creating the component with `scrollbarConstructor` set to the "Scrollbar" class. "Scrollbar" is a basic scrollbar class that does not employ spriting.

      Note : This is an advanced setting

      Parameters:
        `scrollbarConstructor` - Default value is "Scrollbar"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Scrolling overview and related methods`

    - #### setScrollbarSize

          public void setScrollbarSize(int scrollbarSize)

      How thick should we make the scrollbars for this canvas. This only applies if `showCustomScrollbars` is `true`.

      NOTE: When `spriting is enabled`, changing the `scrollbarSize` may cause tiling of certain images and backgrounds that make up the custom scrollbar. This can be fixed for a component by creating it with `scrollbarConstructor` set to "Scrollbar"—a basic scrollbar class that does not employ spriting.

      Note : This is an advanced setting

      Parameters:
        `scrollbarSize` - Default value is 16
      See Also:
        `getScrollbarSize()`, `Scrolling overview and related methods`

    - #### getScrollbarSize

          public int getScrollbarSize()

      How thick should we make the scrollbars for this canvas. This only applies if `showCustomScrollbars` is `true`.

      NOTE: When `spriting is enabled`, changing the `scrollbarSize` may cause tiling of certain images and backgrounds that make up the custom scrollbar. This can be fixed for a component by creating it with `scrollbarConstructor` set to "Scrollbar"—a basic scrollbar class that does not employ spriting.

      Returns:
        Returns the thickness of this widget's scrollbars.
        For canvases showing custom scrollbars this is determined from `this.scrollbarSize`
      See Also:
        `getScrollbarSize()`, `Scrolling overview and related methods`

    - #### setShadowDepth

          public void setShadowDepth(int shadowDepth)
                              throws java.lang.IllegalStateException

      Depth of the shadow, or the virtual height above the page of the widget throwing the shadow.

      This is a single parameter that can be used to control both `shadowSoftness` and `shadowOffset`.

      Parameters:
        `shadowDepth` - Default value is 4
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getShadowDepth

          public int getShadowDepth()

      Depth of the shadow, or the virtual height above the page of the widget throwing the shadow.

      This is a single parameter that can be used to control both `shadowSoftness` and `shadowOffset`.

      Returns:
        int

    - #### setShadowImage

          public void setShadowImage(java.lang.String shadowImage)
                              throws java.lang.IllegalStateException

      Base name of the series of images for the sides, corners, and center of the shadow.

      The actual image names fetched for the dropShadow combine the segment name and the `shadowDepth` setting. For example, given "ds.png" as the base name, a depth of 4, and the top-left segment of the shadow, we'd use "ds4_TL.png".

      The names for segments are the same as those given for controlling resizable edges; see `resizeFrom`. The center segment has the name "center". The center segment is the only segment that doesn't include the depth in the URL, so the final image name for the center given a baseName of "ds.png" would be just "ds_center.png".

      Note : This is an advanced setting

      Parameters:
        `shadowImage` - See `SCImgURL` . Default value is "[SKIN]ds.png"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getShadowImage

          public java.lang.String getShadowImage()

      Base name of the series of images for the sides, corners, and center of the shadow.

      The actual image names fetched for the dropShadow combine the segment name and the `shadowDepth` setting. For example, given "ds.png" as the base name, a depth of 4, and the top-left segment of the shadow, we'd use "ds4_TL.png".

      The names for segments are the same as those given for controlling resizable edges; see `resizeFrom`. The center segment has the name "center". The center segment is the only segment that doesn't include the depth in the URL, so the final image name for the center given a baseName of "ds.png" would be just "ds_center.png".

      Returns:
        See `SCImgURL`

    - #### setShadowOffset

          public void setShadowOffset(java.lang.Integer shadowOffset)

      Offset of the shadow. Defaults to half of `shadowDepth` if unset.

      Because of the blurred edges, a shadow is larger than the originating component by 2xsoftness. An `shadowOffset` of 0 means that the shadow will extend around the originating component equally in all directions.

      Note : This is an advanced setting

      Parameters:
        `shadowOffset` - Default value is null
      See Also:
        Shadows Example

    - #### getShadowOffset

          public java.lang.Integer getShadowOffset()

      Offset of the shadow. Defaults to half of `shadowDepth` if unset.

      Because of the blurred edges, a shadow is larger than the originating component by 2xsoftness. An `shadowOffset` of 0 means that the shadow will extend around the originating component equally in all directions.

      Returns:
        Integer
      See Also:
        Shadows Example

    - #### setShadowSoftness

          public void setShadowSoftness(java.lang.Integer shadowSoftness)

      Softness, or degree of blurring, of the shadow.

      A shadow with `softness:x` is 2x pixels larger in each direction than the element throwing the shadow, and the media for each edge should be x pixels wide/tall.

      Defaults to `shadowDepth` if unset.

      Note : This is an advanced setting

      Parameters:
        `shadowSoftness` - Default value is null
      See Also:
        Shadows Example

    - #### getShadowSoftness

          public java.lang.Integer getShadowSoftness()

      Softness, or degree of blurring, of the shadow.

      A shadow with `softness:x` is 2x pixels larger in each direction than the element throwing the shadow, and the media for each edge should be x pixels wide/tall.

      Defaults to `shadowDepth` if unset.

      Returns:
        Integer
      See Also:
        Shadows Example

    - #### setShouldPrint

          public void setShouldPrint(java.lang.Boolean shouldPrint)

      Whether this canvas should be included in a printable view.

      Default is to:

      - omit all peers (edges generated by showEdges:true, etc)
      - omit anything considered a "control", such as a button or menu (see `PrintProperties.omitControls`)
      - include everything else not marked shouldPrint:false
      Parameters:
        `shouldPrint` - Default value is null
      See Also:
        `Printing overview and related methods`

    - #### getShouldPrint

          public java.lang.Boolean getShouldPrint()

      Whether this canvas should be included in a printable view.

      Default is to:

      - omit all peers (edges generated by showEdges:true, etc)
      - omit anything considered a "control", such as a button or menu (see `PrintProperties.omitControls`)
      - include everything else not marked shouldPrint:false
      Returns:
        Boolean
      See Also:
        `Printing overview and related methods`

    - #### setShowCustomScrollbars

          public void setShowCustomScrollbars(boolean showCustomScrollbars)
                                       throws java.lang.IllegalStateException

      Whether to use the browser's native scrollbars or Smart GWT-based scrollbars.

      Smart GWT-based scrollbars are skinnable, giving you complete control over look and feel. Smart GWT-based scrollbars also enable some interactions not possible with native scrollbars, such as `variable height records` in grids in combination with `data paging`.

      Native browser scrollbars are slightly faster simply because there are less Smart GWT components that need to be created, drawn and updated. Each visible Smart GWT-based scrollbar on the screen has roughly the impact of two StretchImgButtons.

      Smart GWT is always aware of the size of the scrollbar, regardless of whether native or custom scrollbars are used, and regardless of what operating system and/or operating system "theme" or "skin" is in use. This means Smart GWT will correctly report the `viewport size`, that is, the interior area of the widget excluding space taken by scrollbars, which is key for exactly filling a component with content without creating unnecessary scrolling.

      The `showCustomScrollbars` setting is typically overridden in load_skin.js in order to change the default for all Smart GWT components at once. This may be achieved via the static `setShowCustomScrollbars()` method or via a simple addProperties block, like so:

                isc.Canvas.addProperties({ showCustomScrollbars:false });

      On `touch devices`, custom scrollbars are disabled in favor of enabling native touch scrolling if available. However, custom scrollbars and native touch scrolling can be enabled for the component by setting `alwaysShowScrollbars` to `true`.

      Note : This is an advanced setting

      Parameters:
        `showCustomScrollbars` - Default value is true
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Scrolling overview and related methods`

    - #### getShowCustomScrollbars

          public boolean getShowCustomScrollbars()

      Whether to use the browser's native scrollbars or Smart GWT-based scrollbars.

      Smart GWT-based scrollbars are skinnable, giving you complete control over look and feel. Smart GWT-based scrollbars also enable some interactions not possible with native scrollbars, such as `variable height records` in grids in combination with `data paging`.

      Native browser scrollbars are slightly faster simply because there are less Smart GWT components that need to be created, drawn and updated. Each visible Smart GWT-based scrollbar on the screen has roughly the impact of two StretchImgButtons.

      Smart GWT is always aware of the size of the scrollbar, regardless of whether native or custom scrollbars are used, and regardless of what operating system and/or operating system "theme" or "skin" is in use. This means Smart GWT will correctly report the `viewport size`, that is, the interior area of the widget excluding space taken by scrollbars, which is key for exactly filling a component with content without creating unnecessary scrolling.

      The `showCustomScrollbars` setting is typically overridden in load_skin.js in order to change the default for all Smart GWT components at once. This may be achieved via the static `setShowCustomScrollbars()` method or via a simple addProperties block, like so:

                isc.Canvas.addProperties({ showCustomScrollbars:false });

      On `touch devices`, custom scrollbars are disabled in favor of enabling native touch scrolling if available. However, custom scrollbars and native touch scrolling can be enabled for the component by setting `alwaysShowScrollbars` to `true`.

      Returns:
        boolean
      See Also:
        `Scrolling overview and related methods`

    - #### setShowDragShadow

          public void setShowDragShadow(java.lang.Boolean showDragShadow)

      When this widget is dragged, if its dragAppearance is `"target"`, should we show a shadow behind the canvas during the drag.

      Note : This is an advanced setting

      Parameters:
        `showDragShadow` - Default value is null
      See Also:
        `Dragdrop overview and related methods`, Drag effects Example

    - #### getShowDragShadow

          public java.lang.Boolean getShowDragShadow()

      When this widget is dragged, if its dragAppearance is `"target"`, should we show a shadow behind the canvas during the drag.
      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`, Drag effects Example

    - #### setShowEdges

          public void setShowEdges(java.lang.Boolean showEdges)
                            throws java.lang.IllegalStateException

      Whether an `EdgedCanvas` should be used to show image-based edges around this component.
      Parameters:
        `showEdges` - Default value is false
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        Edges Example

    - #### getShowEdges

          public java.lang.Boolean getShowEdges()

      Whether an `EdgedCanvas` should be used to show image-based edges around this component.
      Returns:
        Boolean
      See Also:
        Edges Example

    - #### setShowHover

          public void setShowHover(java.lang.Boolean showHover)

      If `this.canHover` is true, should we show the global hover canvas by default when the user hovers over this canvas?
      Parameters:
        `showHover` - Default value is true
      See Also:
        `getHoverHTML()`

    - #### getShowHover

          public java.lang.Boolean getShowHover()

      If `this.canHover` is true, should we show the global hover canvas by default when the user hovers over this canvas?
      Returns:
        Boolean
      See Also:
        `getHoverHTML()`

    - #### setShowHoverComponents

          public void setShowHoverComponents(java.lang.Boolean showHoverComponents)

      When set to true, shows a widget hovering at the mouse point instead of the builtin hover label. Override `getHoverComponent` to provide the Canvas to show as the hoverComponent.

      Note : This is an advanced setting

      Parameters:
        `showHoverComponents` - Default value is false

    - #### getShowHoverComponents

          public java.lang.Boolean getShowHoverComponents()

      When set to true, shows a widget hovering at the mouse point instead of the builtin hover label. Override `getHoverComponent` to provide the Canvas to show as the hoverComponent.
      Returns:
        Boolean

    - #### setShowResizeBar

          public void setShowResizeBar(java.lang.Boolean showResizeBar)

      When this Canvas is included as a member in a `Layout`, whether a resizeBar should be shown after this member in the layout, to allow it to be resized.

      Whether a resizeBar is actually shown also depends on the `defaultResizeBars` attribute of the layout, and whether this Canvas is the last layout member.

      By default the resize bar acts on the Canvas that it is declared on. If you want the resize bar to instead act on the next member of the Layout (e.g. to collapse down or to the right), set `resizeBarTarget` as well.
      If this method is called after the component has been drawn/initialized: When this Canvas is included as a member in a `Layout`, dynamically updates whether a resizeBar should be shown after this member in the layout, to allow it to be resized.

      Whether a resizeBar is actually shown also depends on the `defaultResizeBars` attribute of the layout, and whether this Canvas is the last layout member.

      Parameters:
        `showResizeBar` - setting for this.showResizeBar. Default value is false
      See Also:
        `setResizeBarTarget(java.lang.String)`, `Layout.setDefaultResizeBars(com.smartgwt.client.types.LayoutResizeBarPolicy)`, `LayoutMember overview and related methods`, Nesting Example

    - #### getShowResizeBar

          public java.lang.Boolean getShowResizeBar()

      When this Canvas is included as a member in a `Layout`, whether a resizeBar should be shown after this member in the layout, to allow it to be resized.

      Whether a resizeBar is actually shown also depends on the `defaultResizeBars` attribute of the layout, and whether this Canvas is the last layout member.

      By default the resize bar acts on the Canvas that it is declared on. If you want the resize bar to instead act on the next member of the Layout (e.g. to collapse down or to the right), set `resizeBarTarget` as well.

      Returns:
        Boolean
      See Also:
        `getResizeBarTarget()`, `Layout.getDefaultResizeBars()`, `LayoutMember overview and related methods`, Nesting Example

    - #### setShowShadow

          public void setShowShadow(java.lang.Boolean showShadow)

      Whether to show a drop shadow for this Canvas.

      Developers should be aware that the drop shadow is drawn outside the specified width and height of the widget meaning a widget with shadows takes up a little more space than it otherwise would. A full screen canvas with showShadow set to true as this would be likely to cause browser scrollbars to appear - developers can handle this by either setting this property to false on full-screen widgets, or by setting overflow to "hidden" on the <body> element browser-level scrolling is never intended to occur.
      If this method is called after the component has been drawn/initialized: Method to update `showShadow`.

      Parameters:
        `showShadow` - true if the shadow should be visible false if not. Default value is false
      See Also:
        Shadows Example

    - #### getShowShadow

          public java.lang.Boolean getShowShadow()

      Whether to show a drop shadow for this Canvas.

      Developers should be aware that the drop shadow is drawn outside the specified width and height of the widget meaning a widget with shadows takes up a little more space than it otherwise would. A full screen canvas with showShadow set to true as this would be likely to cause browser scrollbars to appear - developers can handle this by either setting this property to false on full-screen widgets, or by setting overflow to "hidden" on the <body> element browser-level scrolling is never intended to occur.

      Returns:
        Boolean
      See Also:
        Shadows Example

    - #### setShowSnapGrid

          public void setShowSnapGrid(java.lang.Boolean showSnapGrid)

      Whether to show a snap grid for this Canvas. Note that the grid is only shown when either `childrenSnapToGrid` or `childrenSnapResizeToGrid` is `true`.

      Grid is based on `snapHGap` and `snapVGap` properties.
      If this method is called after the component has been drawn/initialized: Set the showSnapGrid property.

      Parameters:
        `showSnapGrid` - Default value is null

    - #### getShowSnapGrid

          public java.lang.Boolean getShowSnapGrid()

      Whether to show a snap grid for this Canvas. Note that the grid is only shown when either `childrenSnapToGrid` or `childrenSnapResizeToGrid` is `true`.

      Grid is based on `snapHGap` and `snapVGap` properties.

      Returns:
        Boolean

    - #### setShrinkElementOnHide

          public void setShrinkElementOnHide(boolean shrinkElementOnHide)

      This is an advanced setting. If set to `true`, when a widget is `hidden`, the widget's handle will be resized such that it takes up no space, in addition to having its css `visibility` property set to `"hidden"`.

      In addition to preventing the size of this widget from impacting the `scroll size` of any parent widget while hidden, this setting works around a native bug observed in Internet Explorer 10, whereby an `<IFRAME>` element with visibility set to hidden can cause rendering problems, if the HTML loaded by the `<IFRAME>` contains a `<frameset>`. In this case the browser may refuse to draw other elements at the same coordinates with a lower z-index than the hidden frame. Setting this property to `true` works around this problem for cases where an `<IFRAME>` containing a `<frameset` will be rendered out, for example in an `HTMLFlow` with `contentsType` set to `"page"`.

      Note : This is an advanced setting

      Parameters:
        `shrinkElementOnHide` - Default value is false
      See Also:
        `Visibility overview and related methods`

    - #### getShrinkElementOnHide

          public boolean getShrinkElementOnHide()

      This is an advanced setting. If set to `true`, when a widget is `hidden`, the widget's handle will be resized such that it takes up no space, in addition to having its css `visibility` property set to `"hidden"`.

      In addition to preventing the size of this widget from impacting the `scroll size` of any parent widget while hidden, this setting works around a native bug observed in Internet Explorer 10, whereby an `<IFRAME>` element with visibility set to hidden can cause rendering problems, if the HTML loaded by the `<IFRAME>` contains a `<frameset>`. In this case the browser may refuse to draw other elements at the same coordinates with a lower z-index than the hidden frame. Setting this property to `true` works around this problem for cases where an `<IFRAME>` containing a `<frameset` will be rendered out, for example in an `HTMLFlow` with `contentsType` set to `"page"`.

      Returns:
        boolean
      See Also:
        `Visibility overview and related methods`

    - #### setSkinImgDir

          public void setSkinImgDir(java.lang.String skinImgDir)

      Default directory for skin images (those defined by the class), relative to the Page-wide `skinDir`.

      Note : This is an advanced setting

      Parameters:
        `skinImgDir` - Default value is "images/"
      See Also:
        `Images overview and related methods`

    - #### getSkinImgDir

          public java.lang.String getSkinImgDir()

      Default directory for skin images (those defined by the class), relative to the Page-wide `skinDir`.
      Returns:
        String
      See Also:
        `Images overview and related methods`

    - #### setSnapAlignCandidates

          public void setSnapAlignCandidates(Canvas... snapAlignCandidates)

      When `childrenSnapAlign` is enabled, list of candidates to check for alignment.

      If a list of `snapAlignCandidates` is never provided, the default is to use all children that are not explicitly excluded via `isSnapAlignCandidate`, including automatically adding newly added children as candidates, and ignoring children that have been removed. Use `addSnapAlignCandidate()` and `removeSnapAlignCandidate()` to add and remove special candidates while retaining all children as default candidates.

      Possible candidates which are not drawn or are hidden are automatically ignored.

      Parameters:
        `snapAlignCandidates` - Default value is null

    - #### getSnapAlignCandidates

          public Canvas[] getSnapAlignCandidates()

      When `childrenSnapAlign` is enabled, list of candidates to check for alignment.

      If a list of `snapAlignCandidates` is never provided, the default is to use all children that are not explicitly excluded via `isSnapAlignCandidate`, including automatically adding newly added children as candidates, and ignoring children that have been removed. Use `addSnapAlignCandidate()` and `removeSnapAlignCandidate()` to add and remove special candidates while retaining all children as default candidates.

      Possible candidates which are not drawn or are hidden are automatically ignored.

      Returns:
        Canvas...

    - #### setSnapAlignCenterLineStyle

          public void setSnapAlignCenterLineStyle(java.lang.String snapAlignCenterLineStyle)
                                           throws java.lang.IllegalStateException

      CSS border declaration used for the line shown to indicate snapping to a center line when `childrenSnapAlign` is set.
      Parameters:
        `snapAlignCenterLineStyle` - Default value is "1px solid blue"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getSnapAlignCenterLineStyle

          public java.lang.String getSnapAlignCenterLineStyle()

      CSS border declaration used for the line shown to indicate snapping to a center line when `childrenSnapAlign` is set.
      Returns:
        String

    - #### setSnapAlignEdgeLineStyle

          public void setSnapAlignEdgeLineStyle(java.lang.String snapAlignEdgeLineStyle)
                                         throws java.lang.IllegalStateException

      CSS border declaration used for the line shown to indicate snapping to a edge line when `childrenSnapAlign` is set.
      Parameters:
        `snapAlignEdgeLineStyle` - Default value is "1px solid #555555"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getSnapAlignEdgeLineStyle

          public java.lang.String getSnapAlignEdgeLineStyle()

      CSS border declaration used for the line shown to indicate snapping to a edge line when `childrenSnapAlign` is set.
      Returns:
        String

    - #### setSnapAxis

          public void setSnapAxis(java.lang.String snapAxis)

      Describes which axes to apply snap-to-grid to. Valid values are "horizontal", "vertical" or "both".
      Parameters:
        `snapAxis` - Default value is "both"
      See Also:
        `setSnapToGrid(java.lang.Boolean)`, `setSnapResizeToGrid(java.lang.Boolean)`, `setChildrenSnapToGrid(java.lang.Boolean)`, `setChildrenSnapResizeToGrid(java.lang.Boolean)`, `Dragdrop overview and related methods`

    - #### getSnapAxis

          public java.lang.String getSnapAxis()

      Describes which axes to apply snap-to-grid to. Valid values are "horizontal", "vertical" or "both".
      Returns:
        String
      See Also:
        `getSnapToGrid()`, `getSnapResizeToGrid()`, `getChildrenSnapToGrid()`, `getChildrenSnapResizeToGrid()`, `Dragdrop overview and related methods`

    - #### setSnapEdge

          public void setSnapEdge(java.lang.String snapEdge)

      If `snapTo` is defined to this widget, this property can be used to define which edge of this widget should be snapped to an edge of the master or parent element.

      If unspecified the, default snapTo behavior is set up to align the "snapTo" edge of this widget with the snapTo edge of the master or parent.
      If this method is called after the component has been drawn/initialized: Set the snapEdge property of this canvas, and handle repositioning.

      Parameters:
        `snapEdge` - new snapEdge value. Default value is null
      See Also:
        `setSnapTo(java.lang.String)`, `Sizing overview and related methods`

    - #### getSnapEdge

          public java.lang.String getSnapEdge()

      If `snapTo` is defined to this widget, this property can be used to define which edge of this widget should be snapped to an edge of the master or parent element.

      If unspecified the, default snapTo behavior is set up to align the "snapTo" edge of this widget with the snapTo edge of the master or parent.

      Returns:
        Return the snapEdge value of this object
      See Also:
        `getSnapTo()`, `Sizing overview and related methods`

    - #### setSnapHDirection

          public void setSnapHDirection(java.lang.String snapHDirection)

      The horizontal snap direction. Set this value to "before" to snap to the nearest gridpoint to the left; set it to "after" to snap to the nearest gridpoint to the right; and set it to "nearest" to snap to the nearest gridpoint in either direction.
      Parameters:
        `snapHDirection` - Default value is "after"
      See Also:
        `setSnapToGrid(java.lang.Boolean)`, `setSnapResizeToGrid(java.lang.Boolean)`, `setChildrenSnapToGrid(java.lang.Boolean)`, `setChildrenSnapResizeToGrid(java.lang.Boolean)`, `Dragdrop overview and related methods`

    - #### getSnapHDirection

          public java.lang.String getSnapHDirection()

      The horizontal snap direction. Set this value to "before" to snap to the nearest gridpoint to the left; set it to "after" to snap to the nearest gridpoint to the right; and set it to "nearest" to snap to the nearest gridpoint in either direction.
      Returns:
        String
      See Also:
        `getSnapToGrid()`, `getSnapResizeToGrid()`, `getChildrenSnapToGrid()`, `getChildrenSnapResizeToGrid()`, `Dragdrop overview and related methods`

    - #### setSnapHGap

          public void setSnapHGap(int snapHGap)

      The horizontal grid size to use, in pixels, when snap-to-grid is enabled.
      Parameters:
        `snapHGap` - Default value is 20
      See Also:
        `setSnapToGrid(java.lang.Boolean)`, `setSnapResizeToGrid(java.lang.Boolean)`, `setChildrenSnapToGrid(java.lang.Boolean)`, `setChildrenSnapResizeToGrid(java.lang.Boolean)`, `Dragdrop overview and related methods`

    - #### getSnapHGap

          public int getSnapHGap()

      The horizontal grid size to use, in pixels, when snap-to-grid is enabled.
      Returns:
        int
      See Also:
        `getSnapToGrid()`, `getSnapResizeToGrid()`, `getChildrenSnapToGrid()`, `getChildrenSnapResizeToGrid()`, `Dragdrop overview and related methods`

    - #### setSnapOffsetLeft

          public void setSnapOffsetLeft(java.lang.Integer snapOffsetLeft)

      If `snapTo` is defined for this widget, this property can be used to specify an offset in px or percentage for the left coordinate of this widget.

      For example if `snapTo` is specified as `"L"` and `snapOffsetLeft` is set to 6, this widget will be rendered 6px inside the left edge of its parent or master element. Alternatively if `snapTo` was set to `"R"`, a `snapOffsetLeft` value of -6 would cause the component to be rendered 6px inside the right edge of its parent or `master canvas`.
      If this method is called after the component has been drawn/initialized: Setter for `snapOffsetLeft`.

      Parameters:
        `snapOffsetLeft` - new snapOffsetLeft value.. Default value is null
      See Also:
        `setSnapTo(java.lang.String)`, `Sizing overview and related methods`

    - #### getSnapOffsetLeft

          public java.lang.Integer getSnapOffsetLeft()

      If `snapTo` is defined for this widget, this property can be used to specify an offset in px or percentage for the left coordinate of this widget.

      For example if `snapTo` is specified as `"L"` and `snapOffsetLeft` is set to 6, this widget will be rendered 6px inside the left edge of its parent or master element. Alternatively if `snapTo` was set to `"R"`, a `snapOffsetLeft` value of -6 would cause the component to be rendered 6px inside the right edge of its parent or `master canvas`.

      Returns:
        Integer
      See Also:
        `getSnapTo()`, `Sizing overview and related methods`

    - #### setSnapOffsetTop

          public void setSnapOffsetTop(java.lang.Integer snapOffsetTop)

      If `snapTo` is defined for this widget, this property can be used to specify an offset in px or percentage for the top coordinate of this widget.

      For example if `snapTo` is specified as `"T"` and `snapOffsetTop` is set to 6, this widget will be rendered 6px below the top edge of its parent or master element. . Alternatively if `snapTo` was set to `"B"`, a `snapOffsetTop` value of -6 would cause the component to be rendered 6px inside the bottom edge of its parent or `master canvas`.
      If this method is called after the component has been drawn/initialized: Setter for `snapOffsetTop`.

      Parameters:
        `snapOffsetTop` - new snapOffsetTop value.. Default value is null
      See Also:
        `setSnapTo(java.lang.String)`, `Sizing overview and related methods`

    - #### getSnapOffsetTop

          public java.lang.Integer getSnapOffsetTop()

      If `snapTo` is defined for this widget, this property can be used to specify an offset in px or percentage for the top coordinate of this widget.

      For example if `snapTo` is specified as `"T"` and `snapOffsetTop` is set to 6, this widget will be rendered 6px below the top edge of its parent or master element. . Alternatively if `snapTo` was set to `"B"`, a `snapOffsetTop` value of -6 would cause the component to be rendered 6px inside the bottom edge of its parent or `master canvas`.

      Returns:
        Integer
      See Also:
        `getSnapTo()`, `Sizing overview and related methods`

    - #### setSnapOnDrop

          public void setSnapOnDrop(java.lang.Boolean snapOnDrop)

      When this canvas is dropped onto an object supporting snap-to-grid, should it snap to the grid (true, the default) or just drop wherever the mouse is (false).

      Note : This is an advanced setting

      Parameters:
        `snapOnDrop` - Default value is true
      See Also:
        `setSnapToGrid(java.lang.Boolean)`, `com.smartgwt.client.widgets.Canvas#shouldSnapOnDrop`, `Dragdrop overview and related methods`

    - #### getSnapOnDrop

          public java.lang.Boolean getSnapOnDrop()

      When this canvas is dropped onto an object supporting snap-to-grid, should it snap to the grid (true, the default) or just drop wherever the mouse is (false).
      Returns:
        Boolean
      See Also:
        `getSnapToGrid()`, `com.smartgwt.client.widgets.Canvas#shouldSnapOnDrop`, `Dragdrop overview and related methods`

    - #### setSnapResizeToAlign

          public void setSnapResizeToAlign(java.lang.Boolean snapResizeToAlign)

      Flag to disable snapping to alignment when this Canvas is resized.

      To control snapping to align for the children resized within this Canvas, see `childrenResizeSnapAlign` instead.

      Parameters:
        `snapResizeToAlign` - Default value is null

    - #### getSnapResizeToAlign

          public java.lang.Boolean getSnapResizeToAlign()

      Flag to disable snapping to alignment when this Canvas is resized.

      To control snapping to align for the children resized within this Canvas, see `childrenResizeSnapAlign` instead.

      Returns:
        Boolean

    - #### setSnapResizeToGrid

          public void setSnapResizeToGrid(java.lang.Boolean snapResizeToGrid)

      Causes this canvas to snap to its parent's grid when resizing. Note that this value defaults to the Canvas's `snapToGrid` value if undefined.
      Parameters:
        `snapResizeToGrid` - Default value is null
      See Also:
        `Dragdrop overview and related methods`

    - #### getSnapResizeToGrid

          public java.lang.Boolean getSnapResizeToGrid()

      Causes this canvas to snap to its parent's grid when resizing. Note that this value defaults to the Canvas's `snapToGrid` value if undefined.
      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`

    - #### setSnapTo

          public void setSnapTo(java.lang.String snapTo)

      Position this widget such that it is aligned with ("snapped to") an edge of its `master` (if specified), or its `parent canvas`.

      Note that this property also impacts the sizing of this widget. If this widgets size is specified as a percent value, and has no explicit `percentSource`, sizing will be calculated based on the size of the `master canvas` when snapTo is set.

      Possible values: BR, BL, TR, TL, R, L, B, T, C where B=Bottom, T=Top, L=Left, R=right and C=center

      Standard snapTo behavior will attach the outer edge of the widget to the parent or master element - for example setting `snapTo` to `"B"` would align the bottom edge of this component with the bottom edge of the master or parent element (and center this component horizontally over its master or parent element). `snapEdge` can be specified to change this behavior allowing the developer to, for example, align the top edge of this component with the bottom edge of its `master canvas`.

      `snapOffsetLeft` and `snapOffsetTop` may also be specified to offset the element from exact snapTo alignment.
      If this method is called after the component has been drawn/initialized: Set the snapTo property of this canvas, and handle repositioning.

      Parameters:
        `snapTo` - new snapTo value. Default value is null
      See Also:
        `setSnapEdge(java.lang.String)`, `setPercentBox(com.smartgwt.client.types.PercentBoxModel)`, `Sizing overview and related methods`

    - #### getSnapTo

          public java.lang.String getSnapTo()

      Position this widget such that it is aligned with ("snapped to") an edge of its `master` (if specified), or its `parent canvas`.

      Note that this property also impacts the sizing of this widget. If this widgets size is specified as a percent value, and has no explicit `percentSource`, sizing will be calculated based on the size of the `master canvas` when snapTo is set.

      Possible values: BR, BL, TR, TL, R, L, B, T, C where B=Bottom, T=Top, L=Left, R=right and C=center

      Standard snapTo behavior will attach the outer edge of the widget to the parent or master element - for example setting `snapTo` to `"B"` would align the bottom edge of this component with the bottom edge of the master or parent element (and center this component horizontally over its master or parent element). `snapEdge` can be specified to change this behavior allowing the developer to, for example, align the top edge of this component with the bottom edge of its `master canvas`.

      `snapOffsetLeft` and `snapOffsetTop` may also be specified to offset the element from exact snapTo alignment.

      Returns:
        Return the snapTo value of this object
      See Also:
        `getSnapEdge()`, `getPercentBox()`, `Sizing overview and related methods`

    - #### setSnapToAlign

          public void setSnapToAlign(java.lang.Boolean snapToAlign)

      Flag to disable snapping to alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.

      To control snapping to align for the children dragged within this Canvas, see `childrenSnapAlign` instead.

      Parameters:
        `snapToAlign` - Default value is null

    - #### getSnapToAlign

          public java.lang.Boolean getSnapToAlign()

      Flag to disable snapping to alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.

      To control snapping to align for the children dragged within this Canvas, see `childrenSnapAlign` instead.

      Returns:
        Boolean

    - #### setSnapToCenterAlign

          public void setSnapToCenterAlign(java.lang.Boolean snapToCenterAlign)

      Flag to disable snapping to center alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
      Parameters:
        `snapToCenterAlign` - Default value is null

    - #### getSnapToCenterAlign

          public java.lang.Boolean getSnapToCenterAlign()

      Flag to disable snapping to center alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
      Returns:
        Boolean

    - #### setSnapToEdgeAlign

          public void setSnapToEdgeAlign(java.lang.Boolean snapToEdgeAlign)

      Flag to disable snapping to edge alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
      Parameters:
        `snapToEdgeAlign` - Default value is null

    - #### getSnapToEdgeAlign

          public java.lang.Boolean getSnapToEdgeAlign()

      Flag to disable snapping to edge alignment when this Canvas is dragged when `childrenSnapAlign` is enabled on this Canvas' parent.
      Returns:
        Boolean

    - #### setSnapToGrid

          public void setSnapToGrid(java.lang.Boolean snapToGrid)

      Causes this canvas to snap to its parent's grid when dragging.
      Parameters:
        `snapToGrid` - Default value is null
      See Also:
        `setChildrenSnapToGrid(java.lang.Boolean)`, `Dragdrop overview and related methods`

    - #### getSnapToGrid

          public java.lang.Boolean getSnapToGrid()

      Causes this canvas to snap to its parent's grid when dragging.
      Returns:
        Boolean
      See Also:
        `getChildrenSnapToGrid()`, `Dragdrop overview and related methods`

    - #### setSnapVDirection

          public void setSnapVDirection(java.lang.String snapVDirection)

      The vertical snap direction. Set this value to "before" to snap to the nearest gridpoint above; set it to "after" to snap to the nearest gridpoint below; and set it to "nearest" to snap to the nearest gridpoint in either direction.
      Parameters:
        `snapVDirection` - Default value is "after"
      See Also:
        `setSnapToGrid(java.lang.Boolean)`, `setSnapResizeToGrid(java.lang.Boolean)`, `setChildrenSnapToGrid(java.lang.Boolean)`, `setChildrenSnapResizeToGrid(java.lang.Boolean)`, `Dragdrop overview and related methods`

    - #### getSnapVDirection

          public java.lang.String getSnapVDirection()

      The vertical snap direction. Set this value to "before" to snap to the nearest gridpoint above; set it to "after" to snap to the nearest gridpoint below; and set it to "nearest" to snap to the nearest gridpoint in either direction.
      Returns:
        String
      See Also:
        `getSnapToGrid()`, `getSnapResizeToGrid()`, `getChildrenSnapToGrid()`, `getChildrenSnapResizeToGrid()`, `Dragdrop overview and related methods`

    - #### setSnapVGap

          public void setSnapVGap(int snapVGap)

      The vertical grid size to use, in pixels, when snap-to-grid is enabled.
      Parameters:
        `snapVGap` - Default value is 20
      See Also:
        `setSnapToGrid(java.lang.Boolean)`, `setSnapResizeToGrid(java.lang.Boolean)`, `setChildrenSnapToGrid(java.lang.Boolean)`, `setChildrenSnapResizeToGrid(java.lang.Boolean)`, `Dragdrop overview and related methods`

    - #### getSnapVGap

          public int getSnapVGap()

      The vertical grid size to use, in pixels, when snap-to-grid is enabled.
      Returns:
        int
      See Also:
        `getSnapToGrid()`, `getSnapResizeToGrid()`, `getChildrenSnapToGrid()`, `getChildrenSnapResizeToGrid()`, `Dragdrop overview and related methods`

    - #### setStyleName

          public void setStyleName(java.lang.String styleName)

      The CSS class applied to this widget as a whole.
      If this method is called after the component has been drawn/initialized: Sets the CSS class for this widget
      Overrides:
        `setStyleName` in class `com.google.gwt.user.client.ui.UIObject`
      Parameters:
        `styleName` - new CSS style name See `CSSStyleName` . Default value is "normal"
      See Also:
        `Appearance overview and related methods`, CSS styles Example

    - #### getStyleName

          public java.lang.String getStyleName()

      The CSS class applied to this widget as a whole.
      Overrides:
        `getStyleName` in class `com.google.gwt.user.client.ui.UIObject`
      Returns:
        See `CSSStyleName`
      See Also:
        `Appearance overview and related methods`, CSS styles Example

    - #### setTabIndex

          public void setTabIndex(java.lang.Integer tabIndex)

      If specified this governs the tabIndex of the widget in the page's tab order. Note that by default Smart GWT auto-assigns tab-indices, ensuring focusable widgets are reachable by tabbing in the order in which they are drawn on the page. `canvas.tabIndex` cannot be set to greater than `TAB_INDEX_FLOOR` - as we reserve the values above this range for auto-assigned tab-indices.
      If this method is called after the component has been drawn/initialized: Assign an explicit tabIndex to this widget.

      Note : This is an advanced setting

      Parameters:
        `tabIndex` - New tabIndex for this widget. Must be less than `TAB_INDEX_FLOOR` to avoid interfering with auto-assigned tab indices on the page.. Default value is null
      See Also:
        `Focus overview and related methods`

    - #### getTabIndex

          public java.lang.Integer getTabIndex()

      If specified this governs the tabIndex of the widget in the page's tab order. Note that by default Smart GWT auto-assigns tab-indices, ensuring focusable widgets are reachable by tabbing in the order in which they are drawn on the page. `canvas.tabIndex` cannot be set to greater than `TAB_INDEX_FLOOR` - as we reserve the values above this range for auto-assigned tab-indices.
      Returns:
        Integer
      See Also:
        `Focus overview and related methods`

    - #### setTop

          public void setTop(int top)

      Number of pixels the top of the widget is offset down from its default drawing context (either its parent's top-left corner, or the document flow, depending on the value of the `position` property).

      Can also be set as a percentage, specified as a String ending in '%', eg, "50%". In this case the top coordinate is considered as a percentage of the specified height of the `parent`.
      If this method is called after the component has been drawn/initialized: Set the top coordinate of this object, relative to its enclosing context, in pixels.

      NOTE: if you're setting multiple coordinates, use setRect() or moveTo() instead

      Parameters:
        `top` - new top coordinate. Default value is 0
      See Also:
        `Positioning overview and related methods`

    - #### getTop

          public int getTop()

      Number of pixels the top of the widget is offset down from its default drawing context (either its parent's top-left corner, or the document flow, depending on the value of the `position` property).

      Can also be set as a percentage, specified as a String ending in '%', eg, "50%". In this case the top coordinate is considered as a percentage of the specified height of the `parent`.

      Returns:
        Return the top coordinate of this object, relative to its enclosing context, in pixels.
      See Also:
        `Positioning overview and related methods`

    - #### setTop

          public void setTop(java.lang.String top)

      Number of pixels the top of the widget is offset down from its default drawing context (either its parent's top-left corner, or the document flow, depending on the value of the `position` property).

      Can also be set as a percentage, specified as a String ending in '%', eg, "50%". In this case the top coordinate is considered as a percentage of the specified height of the `parent`.
      If this method is called after the component has been drawn/initialized: Set the top coordinate of this object, relative to its enclosing context, in pixels.

      NOTE: if you're setting multiple coordinates, use setRect() or moveTo() instead

      Parameters:
        `top` - new top coordinate. Default value is 0
      See Also:
        `Positioning overview and related methods`

    - #### getTopElement

          public Canvas getTopElement()
                               throws java.lang.IllegalStateException

      The top-most Canvas (i.e., not a child of any other Canvas), if any, in this widget's containment hierarchy.

      Note : This method should be called only after the widget has been rendered.

      Returns:
        Canvas
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.
      See Also:
        `Containment overview and related methods`

    - #### setUseBackMask

          public void setUseBackMask(java.lang.Boolean useBackMask)

      In earlier versions of Internet Explorer (pre IE9), a native limitation exists whereby if HTML elements are overlapping on the page, certain elements can appear to "burn through" elements in the same position with a higher z-index. Specific cases in which this have been observed include Applets, <IFRAME> elements, and for older versions of IE, native <SELECT> items.

      The backMask is a workaround for this issue. If `useBackMask` is set to `true`, the component will render an empty <IFRAME> element behind the canvas, which prevents this effect in all known cases.

      Has no effect in other browsers.

      Note : This is an advanced setting

      Parameters:
        `useBackMask` - Default value is false

    - #### getUseBackMask

          public java.lang.Boolean getUseBackMask()

      In earlier versions of Internet Explorer (pre IE9), a native limitation exists whereby if HTML elements are overlapping on the page, certain elements can appear to "burn through" elements in the same position with a higher z-index. Specific cases in which this have been observed include Applets, <IFRAME> elements, and for older versions of IE, native <SELECT> items.

      The backMask is a workaround for this issue. If `useBackMask` is set to `true`, the component will render an empty <IFRAME> element behind the canvas, which prevents this effect in all known cases.

      Has no effect in other browsers.

      Returns:
        Boolean

    - #### setUseDragMask

          public void setUseDragMask(boolean useDragMask)

      This flag controls whether we register the component as a maskable item with the EventHandler. If enabled, a backmask will be automatically created for the dragMoveTarget on the fly to avoid burnthrough e.g. by plugins or frames.

      The `dragMaskType` property controls what kind of mask is used in case useDragMask is enabled.

      Parameters:
        `useDragMask` - Default value is false
      See Also:
        `Dragdrop overview and related methods`

    - #### getUseDragMask

          public boolean getUseDragMask()

      This flag controls whether we register the component as a maskable item with the EventHandler. If enabled, a backmask will be automatically created for the dragMoveTarget on the fly to avoid burnthrough e.g. by plugins or frames.

      The `dragMaskType` property controls what kind of mask is used in case useDragMask is enabled.

      Returns:
        boolean
      See Also:
        `Dragdrop overview and related methods`

    - #### setUseNativeDrag

          public void setUseNativeDrag(java.lang.Boolean useNativeDrag)
                                throws java.lang.IllegalStateException

      If set, native HTML5 drag and drop will be used for all drags initiated on this widget (on browsers where this is supported).

      When using native HTML5 drags, the same series of events fires as for a normal drag (`Canvas.dragStart()`, `Canvas.dropMove()`, etc.), and the `dragType` / `dropTypes` system works. `dragAppearance` is not supported; however, basic customization of the browser's tracker image is supported in certain browsers via the `EventHandler.setDragTrackerImage()` API.

      The primary difference with a native drag is that it can be cross-frame; that is, the user can drag out of the current browser window and drop into a different window or tab.

      To provide information that will be available to a foreign frame, use `EventHandler.setNativeDragData()`. This API must be called when the `Canvas.dragStart()` event fires, and will not work if called at any other time.

      However, due to browser bugs and/or browser-imposed limitations, the information provided to `setNativeDragData` cannot be accessed in the foreign frame until the actual drop occurs (mouse button released). This means drop eligibility cannot be determined dynamically based on the dragged data; instead, eligibility can only be determined based on the `dragType` / `dropTypes` system. For this reason, a `dragType` must be set on the source of a drag.

      NOTE: Although Internet Explorer 10+ supports a subset of the HTML5 drag and drop standard, native drag and drop is disabled in IE because cross-window drags—the primary purpose of this API—are not possible.

      Parameters:
        `useNativeDrag` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Dragdrop overview and related methods`, Native Drag Create Example

    - #### getUseNativeDrag

          public java.lang.Boolean getUseNativeDrag()

      If set, native HTML5 drag and drop will be used for all drags initiated on this widget (on browsers where this is supported).

      When using native HTML5 drags, the same series of events fires as for a normal drag (`Canvas.dragStart()`, `Canvas.dropMove()`, etc.), and the `dragType` / `dropTypes` system works. `dragAppearance` is not supported; however, basic customization of the browser's tracker image is supported in certain browsers via the `EventHandler.setDragTrackerImage()` API.

      The primary difference with a native drag is that it can be cross-frame; that is, the user can drag out of the current browser window and drop into a different window or tab.

      To provide information that will be available to a foreign frame, use `EventHandler.setNativeDragData()`. This API must be called when the `Canvas.dragStart()` event fires, and will not work if called at any other time.

      However, due to browser bugs and/or browser-imposed limitations, the information provided to `setNativeDragData` cannot be accessed in the foreign frame until the actual drop occurs (mouse button released). This means drop eligibility cannot be determined dynamically based on the dragged data; instead, eligibility can only be determined based on the `dragType` / `dropTypes` system. For this reason, a `dragType` must be set on the source of a drag.

      NOTE: Although Internet Explorer 10+ supports a subset of the HTML5 drag and drop standard, native drag and drop is disabled in IE because cross-window drags—the primary purpose of this API—are not possible.

      Returns:
        Boolean
      See Also:
        `Dragdrop overview and related methods`, Native Drag Create Example

    - #### setUseOpacityFilter

          public void setUseOpacityFilter(java.lang.Boolean useOpacityFilter)
                                   throws java.lang.IllegalStateException

      Configures where the Opacity filter is used for IE6-8.

      With the default of null, opacity filters are used unless `neverUseFilters` has been set. When set explicitly to true, opacity filters are used even if `neverUseFilters` is true.

      See `IEFilters` for background.

      Parameters:
        `useOpacityFilter` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `IEFilters overview and related methods`

    - #### getUseOpacityFilter

          public java.lang.Boolean getUseOpacityFilter()

      Configures where the Opacity filter is used for IE6-8.

      With the default of null, opacity filters are used unless `neverUseFilters` has been set. When set explicitly to true, opacity filters are used even if `neverUseFilters` is true.

      See `IEFilters` for background.

      Returns:
        Boolean
      See Also:
        `IEFilters overview and related methods`

    - #### setUseTouchScrolling

          public void setUseTouchScrolling(java.lang.Boolean useTouchScrolling)
                                    throws java.lang.IllegalStateException

      On `touch devices`, if this `Canvas` can be scrolled, should touch-dragging the content area result in scrolling? Set to `false` if touch-dragging should not cause scrolling. Note that setting to `false` enables the use of `custom scrollbars` on touch devices.

      `useTouchScrolling` can default to `false` if `disableTouchScrollingForDrag` is `true` and various built-in drag operations are enabled that normally interfere with touch scrolling (e.g. `ListGrid.canDragSelect` and `ListGrid.canReorderRecords`).

      When touch scrolling is disabled, it can be difficult to interact with parts of the custom scrollbars at their default size of 16 pixels. In touch browsers, any touch 8px before the thumb of a `custom scrollbar` will be mapped to the thumb, but the other parts of the scrollbar do not have a similar tolerance applied. The width of the custom scrollbars can be increased by setting the `scrollbarSize` to a larger value, but note that when `spriting is enabled`, changing the `scrollbarSize` may cause tiling of certain images and backgrounds that make up the custom scrollbar. This can be fixed for a component by creating it with `scrollbarConstructor` set to "Scrollbar"—a basic scrollbar class that does not employ spriting.

      Note : This is an advanced setting

      Parameters:
        `useTouchScrolling` - Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Scrolling overview and related methods`

    - #### getUseTouchScrolling

          public java.lang.Boolean getUseTouchScrolling()

      On `touch devices`, if this `Canvas` can be scrolled, should touch-dragging the content area result in scrolling? Set to `false` if touch-dragging should not cause scrolling. Note that setting to `false` enables the use of `custom scrollbars` on touch devices.

      `useTouchScrolling` can default to `false` if `disableTouchScrollingForDrag` is `true` and various built-in drag operations are enabled that normally interfere with touch scrolling (e.g. `ListGrid.canDragSelect` and `ListGrid.canReorderRecords`).

      When touch scrolling is disabled, it can be difficult to interact with parts of the custom scrollbars at their default size of 16 pixels. In touch browsers, any touch 8px before the thumb of a `custom scrollbar` will be mapped to the thumb, but the other parts of the scrollbar do not have a similar tolerance applied. The width of the custom scrollbars can be increased by setting the `scrollbarSize` to a larger value, but note that when `spriting is enabled`, changing the `scrollbarSize` may cause tiling of certain images and backgrounds that make up the custom scrollbar. This can be fixed for a component by creating it with `scrollbarConstructor` set to "Scrollbar"—a basic scrollbar class that does not employ spriting.

      Returns:
        Boolean
      See Also:
        `Scrolling overview and related methods`

    - #### setValuesManager

          public void setValuesManager(ValuesManager valuesManager)

      `ValuesManager` for managing values displayed in this component. If specified at initialization time, this component will be added to the valuesManager via `ValuesManager.addMember()`.

      ValuesManagers allow different fields of a single object to be displayed or edited across multiple UI components. Given a single values object, a valuesManager will handle determining the appropriate field values for its member components and displaying them / responding to edits if the components support this.

      Data may be derived simply from the specified fieldNames within the member components, or for complex nested data structures can be specified by both component and field-level `DataPath`.

      Note that components may be automatically bound to an existing valuesManager attached to a parent component if dataPath is specified. See `dataPath` for more information. Also note that if a databound component has a specified dataSource and dataPath but no specified valuesManager object one will be automatically generated as part of the databinding process
      If this method is called after the component has been drawn/initialized: Setter for the `valuesManager` attribute. This method may be called directly at runtime to set the ValuesManager for a component; it has the same effect as calling `ValuesManager.addMember()`, passing in this DataBoundComponent.

      Note : This is an advanced setting

      Parameters:
        `valuesManager` - new dataPath. Default value is null

    - #### getValuesManager

          public ValuesManager getValuesManager()

      `ValuesManager` for managing values displayed in this component. If specified at initialization time, this component will be added to the valuesManager via `ValuesManager.addMember()`.

      ValuesManagers allow different fields of a single object to be displayed or edited across multiple UI components. Given a single values object, a valuesManager will handle determining the appropriate field values for its member components and displaying them / responding to edits if the components support this.

      Data may be derived simply from the specified fieldNames within the member components, or for complex nested data structures can be specified by both component and field-level `DataPath`.

      Note that components may be automatically bound to an existing valuesManager attached to a parent component if dataPath is specified. See `dataPath` for more information. Also note that if a databound component has a specified dataSource and dataPath but no specified valuesManager object one will be automatically generated as part of the databinding process

      Returns:
        ValuesManager

    - #### setVisibility

          public void setVisibility(Visibility visibility)

      Controls widget visibility when the widget is initialized. See Visibility type for details.
      If this method is called after the component has been drawn/initialized: Sets this widget's visibility to "inherit", so that it becomes visible if all of its parents are visible or it has no parents.

      If the widget has not yet been drawn (and doesn't have a parent or master), this method calls the draw method as well.

      Parameters:
        `visibility` - Default value is Canvas.INHERIT
      See Also:
        `Appearance overview and related methods`

    - #### getVisibility

          public Visibility getVisibility()

      Controls widget visibility when the widget is initialized. See Visibility type for details.
      Returns:
        Returns true if the widget is visible, taking all parents into account, so that a widget which is not hidden might still report itself as not visible if it is within a hidden parent.

        NOTE: Undrawn widgets will report themselves as visible if they would be visible if drawn.

      See Also:
        `Appearance overview and related methods`

    - #### setWidth

          public void setWidth(java.lang.Integer width)

      Size for this component's horizontal dimension.

      Can be a number of pixels, or a percentage like "50%". Percentage sizes are resolved to pixel values as follows:

      - If a canvas has a specified `percentSource`, sizing will be a percentage of the size of that widget (see also `percentBox`).
      - Otherwise, if a canvas has a `master canvas`, and `snapTo` is set for the widget, sizing will be a percentage of the size of that widget (see also `percentBox`).
      - Otherwise if this is a child of some other canvas, percentages will be based on the inner size of the `parent canvas`'s viewport.
      - Otherwise, for top level widgets, sizing is calculated as a percentage of page size.

      `Layouts` may specially interpret percentage sizes on their children, and also allow "*" as a size.

      Note that if `overflow` is set to "visible", this size is a minimum, and the component may overflow to show all content and/or children.

      If trying to establish a default width for a custom component, set `defaultWidth` instead.
      If this method is called after the component has been drawn/initialized: Resizes the widget horizontally to the specified width (moves the right side of the widget). The width parameter can be expressed as a percentage of viewport size or as the number of pixels.

      NOTE: if you're setting multiple coordinates, use resizeTo() or setRect() instead

      Parameters:
        `width` - new width. Default value is null
      See Also:
        `Sizing overview and related methods`

    - #### getWidth

          public java.lang.Integer getWidth()

      Size for this component's horizontal dimension.

      Can be a number of pixels, or a percentage like "50%". Percentage sizes are resolved to pixel values as follows:

      - If a canvas has a specified `percentSource`, sizing will be a percentage of the size of that widget (see also `percentBox`).
      - Otherwise, if a canvas has a `master canvas`, and `snapTo` is set for the widget, sizing will be a percentage of the size of that widget (see also `percentBox`).
      - Otherwise if this is a child of some other canvas, percentages will be based on the inner size of the `parent canvas`'s viewport.
      - Otherwise, for top level widgets, sizing is calculated as a percentage of page size.

      `Layouts` may specially interpret percentage sizes on their children, and also allow "*" as a size.

      Note that if `overflow` is set to "visible", this size is a minimum, and the component may overflow to show all content and/or children.

      If trying to establish a default width for a custom component, set `defaultWidth` instead.

      Returns:
        Return the width of this object, in pixels.
      See Also:
        `Sizing overview and related methods`

    - #### setWidth

          public void setWidth(java.lang.String width)

      Size for this component's horizontal dimension.

      Can be a number of pixels, or a percentage like "50%". Percentage sizes are resolved to pixel values as follows:

      - If a canvas has a specified `percentSource`, sizing will be a percentage of the size of that widget (see also `percentBox`).
      - Otherwise, if a canvas has a `master canvas`, and `snapTo` is set for the widget, sizing will be a percentage of the size of that widget (see also `percentBox`).
      - Otherwise if this is a child of some other canvas, percentages will be based on the inner size of the `parent canvas`'s viewport.
      - Otherwise, for top level widgets, sizing is calculated as a percentage of page size.

      `Layouts` may specially interpret percentage sizes on their children, and also allow "*" as a size.

      Note that if `overflow` is set to "visible", this size is a minimum, and the component may overflow to show all content and/or children.

      If trying to establish a default width for a custom component, set `defaultWidth` instead.
      If this method is called after the component has been drawn/initialized: Resizes the widget horizontally to the specified width (moves the right side of the widget). The width parameter can be expressed as a percentage of viewport size or as the number of pixels.

      NOTE: if you're setting multiple coordinates, use resizeTo() or setRect() instead

      Overrides:
        `setWidth` in class `com.google.gwt.user.client.ui.UIObject`
      Parameters:
        `width` - new width. Default value is null
      See Also:
        `Sizing overview and related methods`

    - #### addChild

          public Canvas addChild(Canvas newChild)

      Adds newChild as a child of this widget, set up a named object reference (i.e., this[name]) to the new widget if name argument is provided, and draw the child if this widget has been drawn already.

      If newChild has a parent it will be removed from it. If it has a master, it will be detached from it if the master is a child of a different parent. If newChild has peers, they'll be added to this widget as children as well.

      Parameters:
        `newChild` - new child canvas to add
      Returns:
        the new child, or null if it couldn't be added
      See Also:
        `Containment overview and related methods`

    - #### addChild

          public Canvas addChild(Canvas newChild,
                                 java.lang.String name)

      See Also:
        `addChild(com.smartgwt.client.widgets.Canvas)`

    - #### addChild

          public Canvas addChild(Canvas newChild,
                                 java.lang.String name,
                                 java.lang.Boolean autoDraw)

      Adds newChild as a child of this widget, set up a named object reference (i.e., this[name]) to the new widget if name argument is provided, and draw the child if this widget has been drawn already.

      If newChild has a parent it will be removed from it. If it has a master, it will be detached from it if the master is a child of a different parent. If newChild has peers, they'll be added to this widget as children as well.

      Parameters:
        `newChild` - new child canvas to add
        `name` - name to assign to child (eg: this[name] == child)
        `autoDraw` - if false, child will not automatically be drawn (only for advanced use)
      Returns:
        the new child, or null if it couldn't be added
      See Also:
        `Containment overview and related methods`

    - #### addPeer

          public Canvas addPeer(Canvas newPeer)

      Adds newPeer as a peer of this widget (also making it a child of this widget's parent, if any), set up a named object reference (i.e., this[name]) to the new widget if name is provided, and draw the peer if this widget has been drawn already.

      The widget to be added as a peer will be removed from its old master and/or parent, if any, and it will be added as a child to the parent of this canvas (if any)

      Parameters:
        `newPeer` - new peer widget to add
      Returns:
        the new peer, or null if it couldn't be added
      See Also:
        `Containment overview and related methods`

    - #### addPeer

          public Canvas addPeer(Canvas newPeer,
                                java.lang.String name)

      See Also:
        `addPeer(com.smartgwt.client.widgets.Canvas)`

    - #### addPeer

          public Canvas addPeer(Canvas newPeer,
                                java.lang.String name,
                                java.lang.Boolean autoDraw)

      See Also:
        `addPeer(com.smartgwt.client.widgets.Canvas)`

    - #### addPeer

          public Canvas addPeer(Canvas newPeer,
                                java.lang.String name,
                                java.lang.Boolean autoDraw,
                                java.lang.Boolean preDraw)

      Adds newPeer as a peer of this widget (also making it a child of this widget's parent, if any), set up a named object reference (i.e., this[name]) to the new widget if name is provided, and draw the peer if this widget has been drawn already.

      The widget to be added as a peer will be removed from its old master and/or parent, if any, and it will be added as a child to the parent of this canvas (if any)

      Parameters:
        `newPeer` - new peer widget to add
        `name` - name to assign to peer (eg: this[peer] == child)
        `autoDraw` - if true, peer will not automatically be drawn (only for advanced use)
        `preDraw` - if true, when draw is called on the master widget, the peer will be drawn before the master
      Returns:
        the new peer, or null if it couldn't be added
      See Also:
        `Containment overview and related methods`

    - #### addSnapAlignCandidate

          public void addSnapAlignCandidate(Canvas newCandidate)

      Add a candidate to `snapAlignCandidates`. Duplicates are automatically avoided.
      Parameters:
        `newCandidate` -

    - #### adjustForContent

          public void adjustForContent(boolean immediate)

      This method tells a component to adjust for size changes made to content by external code.

      This is for very advanced use in which the contents of a Canvas are being directly updated by Ajax techniques, which is required for integration with some third-party libraries. Calling this method is required because browsers do not provide consistent events by which Smart GWT can be notified of external content changes.

      Only contents supplied to a widget via `contents` or via an override of `getInnerHTML()` should be manipulated directly. Contents automatically generated by Smart GWT components (such as the basic structure of a Button) should never be manipulated: these structures are considered internal, differ by platform, and will change without notice.

      Parameters:
        `immediate` - By default the adjustment will occur on a small delay for performance reasons. Pass in this parameter to force immediate adjustment.
      See Also:
        `Sizing overview and related methods`

    - #### animateFade

          public void animateFade(java.lang.Integer opacity)

      Animate a change in opacity from the widget's current opacity to the specified opacity.
      Parameters:
        `opacity` - desired final opacity
      See Also:
        Fade Show & Hide Example

    - #### animateFade

          public void animateFade(java.lang.Integer opacity,
                                  AnimationCallback callback)

      See Also:
        `animateFade(java.lang.Integer)`

    - #### animateFade

          public void animateFade(java.lang.Integer opacity,
                                  AnimationCallback callback,
                                  java.lang.Integer duration)

      See Also:
        `animateFade(java.lang.Integer)`

    - #### animateFade

          public void animateFade(java.lang.Integer opacity,
                                  AnimationCallback callback,
                                  java.lang.Integer duration,
                                  AnimationAcceleration acceleration)

      Animate a change in opacity from the widget's current opacity to the specified opacity.
      Parameters:
        `opacity` - desired final opacity
        `callback` - When the fade completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation
        `duration` - Duration in ms of the animated fade
        `acceleration` - Optional animation acceleration to bias the ratios
      See Also:
        Fade Show & Hide Example

    - #### animateMove

          public void animateMove(java.lang.Integer left,
                                  java.lang.Integer top)

      Animate a reposition of this canvas from its current position to the specified position
      Parameters:
        `left` - new left position (or null for unchanged)
        `top` - new top position (or null for unchanged)
      See Also:
        Fly Onscreen Example

    - #### animateMove

          public void animateMove(java.lang.Integer left,
                                  java.lang.Integer top,
                                  AnimationCallback callback)

      See Also:
        `animateMove(java.lang.Integer, java.lang.Integer)`

    - #### animateMove

          public void animateMove(java.lang.Integer left,
                                  java.lang.Integer top,
                                  AnimationCallback callback,
                                  java.lang.Integer duration)

      See Also:
        `animateMove(java.lang.Integer, java.lang.Integer)`

    - #### animateMove

          public void animateMove(java.lang.Integer left,
                                  java.lang.Integer top,
                                  AnimationCallback callback,
                                  java.lang.Integer duration,
                                  AnimationAcceleration acceleration)

      Animate a reposition of this canvas from its current position to the specified position
      Parameters:
        `left` - new left position (or null for unchanged)
        `top` - new top position (or null for unchanged)
        `callback` - When the move completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation
        `duration` - Duration in ms of the animated move
        `acceleration` - Optional acceleration effect to bias the ratios
      See Also:
        Fly Onscreen Example

    - #### animateRect

          public void animateRect(java.lang.Integer left,
                                  java.lang.Integer top,
                                  java.lang.Integer width,
                                  java.lang.Integer height)

      Animate a reposition / resize of this canvas from its current size and position.
      Parameters:
        `left` - new left position (or null for unchanged)
        `top` - new top position (or null for unchanged)
        `width` - new width (or null for unchanged)
        `height` - new height (or null for unchanged)
      See Also:
        Zoom & Shrink Example

    - #### animateRect

          public void animateRect(java.lang.Integer left,
                                  java.lang.Integer top,
                                  java.lang.Integer width,
                                  java.lang.Integer height,
                                  AnimationCallback callback)

      See Also:
        `animateRect(java.lang.Integer, java.lang.Integer, java.lang.Integer, java.lang.Integer)`

    - #### animateRect

          public void animateRect(java.lang.Integer left,
                                  java.lang.Integer top,
                                  java.lang.Integer width,
                                  java.lang.Integer height,
                                  AnimationCallback callback,
                                  java.lang.Integer duration)

      See Also:
        `animateRect(java.lang.Integer, java.lang.Integer, java.lang.Integer, java.lang.Integer)`

    - #### animateRect

          public void animateRect(java.lang.Integer left,
                                  java.lang.Integer top,
                                  java.lang.Integer width,
                                  java.lang.Integer height,
                                  AnimationCallback callback,
                                  java.lang.Integer duration,
                                  AnimationAcceleration acceleration)

      Animate a reposition / resize of this canvas from its current size and position.
      Parameters:
        `left` - new left position (or null for unchanged)
        `top` - new top position (or null for unchanged)
        `width` - new width (or null for unchanged)
        `height` - new height (or null for unchanged)
        `callback` - When the setRect completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation
        `duration` - Duration in ms of the animated setRect
        `acceleration` - Optional acceleration effect to apply to the animation
      See Also:
        Zoom & Shrink Example

    - #### animateResize

          public void animateResize(java.lang.Integer width,
                                    java.lang.Integer height)

      Animate a resize of this canvas from its current size to the specified size
      Parameters:
        `width` - new width (or null for unchanged)
        `height` - new height (or null for unchanged)
      See Also:
        Resize Example

    - #### animateResize

          public void animateResize(java.lang.Integer width,
                                    java.lang.Integer height,
                                    AnimationCallback callback)

      See Also:
        `animateResize(java.lang.Integer, java.lang.Integer)`

    - #### animateResize

          public void animateResize(java.lang.Integer width,
                                    java.lang.Integer height,
                                    AnimationCallback callback,
                                    java.lang.Integer duration)

      See Also:
        `animateResize(java.lang.Integer, java.lang.Integer)`

    - #### animateResize

          public void animateResize(java.lang.Integer width,
                                    java.lang.Integer height,
                                    AnimationCallback callback,
                                    java.lang.Integer duration,
                                    AnimationAcceleration acceleration)

      Animate a resize of this canvas from its current size to the specified size
      Parameters:
        `width` - new width (or null for unchanged)
        `height` - new height (or null for unchanged)
        `callback` - When the resize completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation
        `duration` - Duration in ms of the animated resize
        `acceleration` - Optional acceleration effect to apply to the resize
      See Also:
        Resize Example

    - #### animateScroll

          public void animateScroll(java.lang.Integer scrollLeft,
                                    java.lang.Integer scrollTop)

      Animate a scroll from the current scroll position to the specified position.
      Parameters:
        `scrollLeft` - desired final left scroll position
        `scrollTop` - desired final top scroll position

    - #### animateScroll

          public void animateScroll(java.lang.Integer scrollLeft,
                                    java.lang.Integer scrollTop,
                                    AnimationCallback callback)

      See Also:
        `animateScroll(java.lang.Integer, java.lang.Integer)`

    - #### animateScroll

          public void animateScroll(java.lang.Integer scrollLeft,
                                    java.lang.Integer scrollTop,
                                    AnimationCallback callback,
                                    java.lang.Integer duration)

      See Also:
        `animateScroll(java.lang.Integer, java.lang.Integer)`

    - #### animateScroll

          public void animateScroll(java.lang.Integer scrollLeft,
                                    java.lang.Integer scrollTop,
                                    AnimationCallback callback,
                                    java.lang.Integer duration,
                                    AnimationAcceleration acceleration)

      Animate a scroll from the current scroll position to the specified position.
      Parameters:
        `scrollLeft` - desired final left scroll position
        `scrollTop` - desired final top scroll position
        `callback` - When the scroll completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation
        `duration` - Duration in ms of the animated scroll
        `acceleration` - Optional acceleration to bias the animation ratios

    - #### blur

          public void blur()

      If this canvas has keyboard focus, blur it. After this method, the canvas will no longer appear focused and will stop receiving keyboard events.
      See Also:
        `Focus overview and related methods`

    - #### bringToFront

          public void bringToFront()

      Puts this widget at the top of the stacking order, so it appears in front of all other widgets in the same parent.
      See Also:
        `ZIndex overview and related methods`, Layer Example

    - #### clear

          public void clear()

      Remove all visual representation of a Canvas, including all child or member Canvases, or managed top-level components such as the ListGrid drop location indicator.

      This is more expensive than hide(), because in order to become visible again, the Canvas must be draw()n again. Generally, application code has no reason to call clear() unless it is attempting to do advanced memory management. If you want to temporarily hide a Canvas, use hide() and show(), and if you want to permanently destroy a Canvas, use `destroy()`.

      You would only use clear() if you were managing a very large pool of components and you wanted to reclaim some of the memory used by components that had not been used in a while, while still being able to just draw() them to make them active and visible again.

      Note: a clear() will happen as part of moving a Canvas to a different parent. See `addChild()`.

    - #### addClickHandler

          public com.google.gwt.event.shared.HandlerRegistration addClickHandler(ClickHandler handler)

      Add a click handler.

      Executed when the left mouse is clicked (pressed and then released) on this widget. No default implementation.

      Specified by:
        `addClickHandler` in interface `HasClickHandlers`
      Parameters:
        `handler` - the click handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### clickMaskUp

          public java.lang.Boolean clickMaskUp()

      Determines whether a clickmask is showing
      Returns:
        whether or not a clickmask is showing
      See Also:
        `showClickMask(com.smartgwt.client.core.Function, com.smartgwt.client.types.ClickMaskMode, com.smartgwt.client.widgets.Canvas[])`

    - #### clickMaskUp

          public java.lang.Boolean clickMaskUp(java.lang.String ID)

      Determines whether a clickmask is showing
      Parameters:
        `ID` - optional ID of specific clickMask to check. If not passed, checks for the click mask associated with this widget only.
      Returns:
        whether or not a clickmask is showing
      See Also:
        `showClickMask(com.smartgwt.client.core.Function, com.smartgwt.client.types.ClickMaskMode, com.smartgwt.client.widgets.Canvas[])`

    - #### contains

          public java.lang.Boolean contains(Canvas canvas)

      Returns true if element is a descendant of this widget (i.e., exists below this widget in the containment hierarchy); and false otherwise.
      Parameters:
        `canvas` - the canvas to be tested
      Returns:
        true if specified element is a descendant of this canvas; false otherwise
      See Also:
        `Containment overview and related methods`

    - #### contains

          public java.lang.Boolean contains(Canvas canvas,
                                            java.lang.Boolean testSelf)

      Returns true if element is a descendant of this widget (i.e., exists below this widget in the containment hierarchy); and false otherwise.
      Parameters:
        `canvas` - the canvas to be tested
        `testSelf` - If passed this method will return true if the canvas parameter is a pointer to this widget.
      Returns:
        true if specified element is a descendant of this canvas; false otherwise
      See Also:
        `Containment overview and related methods`

    - #### containsEvent

          public java.lang.Boolean containsEvent()

      Return true if the last event's mouse coordinates are within the bounds of this component. NOTE: Z-ordering is not considered for the purposes of this test. If the coordinate you're testing is occluded by other component, but the X,Y coordinates are still within the bounds of that component, this method will return true.
      Returns:
        true if the event occurred within the bounds of this component
      See Also:
        `Positioning overview and related methods`

    - #### containsFocus

          public java.lang.Boolean containsFocus()

      Returns true if the keyboard focus is in this Canvas or any child of this Canvas.
      Returns:
        whether this Canvas contains the keyboard focus
      See Also:
        `Focus overview and related methods`

    - #### containsPoint

          public java.lang.Boolean containsPoint(int x,
                                                 int y)

      Return whether or not this object contains the specified global (x,y) coordinates.

      Will return false if any parent canvas does not contain the specified point, (EG: you're hovering over an element's absolute location, but it is scrolled out of view in a parent element)

      Parameters:
        `x` - GLOBAL x-coordinate
        `y` - GLOBAL y-coordinate
      Returns:
        true if this object contains the specified point; false otherwise
      See Also:
        `Positioning overview and related methods`

    - #### containsPoint

          public java.lang.Boolean containsPoint(int x,
                                                 int y,
                                                 java.lang.Boolean withinViewport)

      Return whether or not this object contains the specified global (x,y) coordinates.

      Will return false if any parent canvas does not contain the specified point, (EG: you're hovering over an element's absolute location, but it is scrolled out of view in a parent element)

      Parameters:
        `x` - GLOBAL x-coordinate
        `y` - GLOBAL y-coordinate
        `withinViewport` - point lies specifically within our viewport (drawn area excluding margins and scrollbars if present)
      Returns:
        true if this object contains the specified point; false otherwise
      See Also:
        `Positioning overview and related methods`

    - #### deparent

          public void deparent()

      Remove this canvas from its parent if it has one.
      See Also:
        `Containment overview and related methods`

    - #### depeer

          public void depeer()

      Make this Canvas no longer a peer of its master
      See Also:
        `Containment overview and related methods`

    - #### disable

          public void disable()

      Disables this widget and any children and peers of this widget.
      See Also:
        `Enable overview and related methods`

    - #### addDoubleClickHandler

          public com.google.gwt.event.shared.HandlerRegistration addDoubleClickHandler(DoubleClickHandler handler)

      Add a doubleClick handler.

      Executed when the left mouse button is clicked twice in rapid succession (within `Canvas.doubleClickDelay` by default) in this object.

      Specified by:
        `addDoubleClickHandler` in interface `HasDoubleClickHandlers`
      Parameters:
        `handler` - the doubleClick handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragMoveHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragMoveHandler(DragMoveHandler handler)

      Add a dragMove handler.

      Executed every time the mouse moves while dragging this canvas.

      Specified by:
        `addDragMoveHandler` in interface `HasDragMoveHandlers`
      Parameters:
        `handler` - the dragMove handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragRepositionMoveHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragRepositionMoveHandler(DragRepositionMoveHandler handler)

      Add a dragRepositionMove handler.

      Executed every time the mouse moves while drag-repositioning. If this method does not Call `DragRepositionMoveEvent.cancel()` from within `DragRepositionMoveHandler.onDragRepositionMove(com.smartgwt.client.widgets.events.DragRepositionMoveEvent)`, the `Canvas.dragTarget` (or outline if `Canvas.dragAppearance` is set to "outline") will automatically be moved as appropriate whenever the mouse moves.

      Specified by:
        `addDragRepositionMoveHandler` in interface `HasDragRepositionMoveHandlers`
      Parameters:
        `handler` - the dragRepositionMove handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragRepositionStartHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragRepositionStartHandler(DragRepositionStartHandler handler)

      Add a dragRepositionStart handler.

      Executed when dragging first starts. No default implementation. Create this handler to set things up for the drag reposition.

      Specified by:
        `addDragRepositionStartHandler` in interface `HasDragRepositionStartHandlers`
      Parameters:
        `handler` - the dragRepositionStart handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragRepositionStopHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragRepositionStopHandler(DragRepositionStopHandler handler)

      Add a dragRepositionStop handler.

      Executed when the mouse button is released at the end of the drag. Your widget can use this opportunity to fire custom code based upon where the mouse button was released, etc.

      Returning true from this handler will cause the `Canvas.dragTarget` (or outline if `Canvas.dragAppearance` is set to "outline") to be left in its current location. Returning false from this handler will cause it to snap back to its original location.

      Specified by:
        `addDragRepositionStopHandler` in interface `HasDragRepositionStopHandlers`
      Parameters:
        `handler` - the dragRepositionStop handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragResizeMoveHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragResizeMoveHandler(DragResizeMoveHandler handler)

      Add a dragResizeMove handler.

      Executed every time the mouse moves while drag-resizing. If this method does not Call `DragResizeMoveEvent.cancel()` from within `DragResizeMoveHandler.onDragResizeMove(com.smartgwt.client.widgets.events.DragResizeMoveEvent)`, the `Canvas.dragTarget` (or outline if `Canvas.dragAppearance` is set to "outline") will automatically be moved as appropriate whenever the mouse moves.

      Specified by:
        `addDragResizeMoveHandler` in interface `HasDragResizeMoveHandlers`
      Parameters:
        `handler` - the dragResizeMove handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragResizeStartHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragResizeStartHandler(DragResizeStartHandler handler)

      Add a dragResizeStart handler.

      Executed when resize dragging first starts. No default implementation. Create this handler to set things up for the drag resize.

      Specified by:
        `addDragResizeStartHandler` in interface `HasDragResizeStartHandlers`
      Parameters:
        `handler` - the dragResizeStart handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragResizeStopHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragResizeStopHandler(DragResizeStopHandler handler)

      Add a dragResizeStop handler.

      Executed when the mouse button is released at the end of the drag resize. Your widget can use this opportunity to fire custom code based upon where the mouse button was released, etc.

      Returning true from this handler will cause the `Canvas.dragTarget` (or outline if `Canvas.dragAppearance` is set to "outline") to be left at its current size. Returning false from this handler will cause it to snap back to its original location size

      Specified by:
        `addDragResizeStopHandler` in interface `HasDragResizeStopHandlers`
      Parameters:
        `handler` - the dragResizeStop handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragStartHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragStartHandler(DragStartHandler handler)

      Add a dragStart handler.

      Executed when dragging first starts. Your widget can use this opportunity to set things up for the drag, such as setting the drag tracker. Returning false from this event handler will cancel the drag action entirely.

      A drag action is considered to be begin when the mouse has moved `Canvas.dragStartDistance` with the left mouse down.

      Specified by:
        `addDragStartHandler` in interface `HasDragStartHandlers`
      Parameters:
        `handler` - the dragStart handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragStopHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragStopHandler(DragStopHandler handler)

      Add a dragStop handler.

      Executed when the mouse button is released at the end of the drag. Your widget can use this opportunity to fire code based on the last location of the drag or reset any visual state that was sent.

      Specified by:
        `addDragStopHandler` in interface `HasDragStopHandlers`
      Parameters:
        `handler` - the dragStop handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDropMoveHandler

          public com.google.gwt.event.shared.HandlerRegistration addDropMoveHandler(DropMoveHandler handler)

      Add a dropMove handler.

      Executed whenever the compatible dragged object is moved over this drop target. You can use this to show a custom visual indication of where the drop would occur within the widget, or to show the `no-drop cursor` to indicate that this is not a valid drop target, typically if `Canvas.willAcceptDrop()` returns false.

      For details on showing a 'no drop' cursor when the user drags over all invalid drop targets, see `showNoDropIndicator`.

      Specified by:
        `addDropMoveHandler` in interface `HasDropMoveHandlers`
      Parameters:
        `handler` - the dropMove handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDropOutHandler

          public com.google.gwt.event.shared.HandlerRegistration addDropOutHandler(DropOutHandler handler)

      Add a dropOut handler.

      Executed when the dragged object is no longer over this drop target, including when the drag interaction is ending with a drop on this drop target. If you have set a visual indication in dropOver or dropMove, you should reset it to its normal state in dropOut.

      Specified by:
        `addDropOutHandler` in interface `HasDropOutHandlers`
      Parameters:
        `handler` - the dropOut handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDropOverHandler

          public com.google.gwt.event.shared.HandlerRegistration addDropOverHandler(DropOverHandler handler)

      Add a dropOver handler.

      Executed when the compatible dragged object is first moved over this drop target. Your implementation can use this to show a custom visual indication that the object can be dropped here.

      Specified by:
        `addDropOverHandler` in interface `HasDropOverHandlers`
      Parameters:
        `handler` - the dropOver handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### enable

          public void enable()

      Enables this widget and any children / peers of this widget.
      See Also:
        `Enable overview and related methods`

    - #### encloses

          public java.lang.Boolean encloses(Canvas other)

      Returns true if the rectangle of this widget encloses the rectangle of the specified widget.
      Parameters:
        `other` - other canvas to test for enclosure
      Returns:
        true if this canvas encloses other; false otherwise
      See Also:
        `Positioning overview and related methods`

    - #### focus

          public void focus()

      If this canvas can accept focus, give it keyboard focus. After this method, the canvas will appear focused and will receive keyboard events.
      See Also:
        `Focus overview and related methods`

    - #### addFocusChangedHandler

          public com.google.gwt.event.shared.HandlerRegistration addFocusChangedHandler(FocusChangedHandler handler)

      Add a focusChanged handler.

      Notification function fired when this widget receives or loses keyboard focus.

      Specified by:
        `addFocusChangedHandler` in interface `HasFocusChangedHandlers`
      Parameters:
        `handler` - the focusChanged handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### focusInNextTabElement

          public void focusInNextTabElement()

      Shifts focus to the next focusable element after this one. This is the programmatic equivalent of the user pressing the Tab key. A "focusable element" is a `Canvas` or `FormItem` that is `focusable`, and is not `disabled` or `masked`. Note that the movement of focus to a `FormItem` is managed by the containing `DynamicForm`; calling this method on a `DynamicForm` will move the focus to the next focusable `FormItem` in the form if there is one, and onto the next focusable `Canvas` if not.

      NOTE: This method only considers Smart GWT elements. Native elements that you create directly - for example, with `HTMLFlow.setContents()` or by creating a custom widget with `getInnerHTML()` that has focusable elements that are not child Canvases - will not be noticed by this method.

      See Also:
        `getTabIndex()`, `focusInPreviousTabElement()`, `Focus overview and related methods`

    - #### focusInPreviousTabElement

          public void focusInPreviousTabElement()

      Shifts focus to the previous focusable element before this one. This is the programmatic equivalent of the user pressing Shift-Tab. A "focusable element" is a `Canvas` or `FormItem` that is `focusable`, and is not `disabled` or `masked`. Note that the movement of focus to a `FormItem` is managed by the containing `DynamicForm`; calling this method on a `DynamicForm` will move the focus to the previous focusable `FormItem` in the form if there is one, and onto the previous focusable `Canvas` if not.

      NOTE: This method only considers Smart GWT elements. Native elements that you create directly - for example, with `HTMLFlow.setContents()` or by creating a custom widget with `getInnerHTML()` that has focusable elements that are not child Canvases - will not be noticed by this method.

      See Also:
        `getTabIndex()`, `focusInNextTabElement()`, `Focus overview and related methods`

    - #### getBottom

          public int getBottom()

      Return the bottom coordinate of this object as rendered, relative to its enclosing context, in pixels.
      Returns:
        bottom coordinate
      See Also:
        `Positioning overview and related methods`

    - #### getContentElement

          public com.google.gwt.user.client.Element getContentElement()

      Returns the DOM element for this Canvas which contains the `contents`, or for `parent components`, the DOM elements for any drawn children. This method is provided for the very rare cases where a programmer needs to examine the DOM hierarchy created by a drawn Smart GWT component.

      Direct manipulation of the DOM elements created by Smart GWT components is not supported. Smart GWT components should be rendered or cleared using standard methods such as `draw()`, `clear()`. If direct integration with existing DOM structures is required, this should be achieved via the `htmlElement` attribute, rather than by attempting to move the component's outer element via native browser APIs.
      The content of Smart GWT components' DOM elements should also not be directly manipulated using native browser APIs - standard methods such as `setContents()`, `addChild()`, `removeChild()`, `markForRedraw()` and `redraw()` should be used instead.

      In some cases, the element returned may match the element returned by `getOuterElement()`, but this will not always be the case.

      If the widget is undrawn, this method will return `null`.

      Returns:
        The outer DOM element for a drawn Canvas.

    - #### getFullDataPath

          public java.lang.String getFullDataPath()

      Returns a fully qualified `DataPath` for this canvas. This is calculated by combining the canvas' specified `DataPath` with the `dataPath` of any parent canvases up to whichever canvas has a specified `valuesManager` specified to actually manage values from this component.
      Returns:
        fully qualified dataPath for this component

    - #### getHoverHTML

          public java.lang.String getHoverHTML()

      If `this.showHover` is true, when the user holds the mouse over this Canvas for long enough to trigger a hover event, a hover canvas is shown by default. This method returns the contents of that hover canvas. Default implementation returns `this.prompt` - override for custom hover HTML. Note that returning `null` or an empty string will suppress the hover canvas altogether.
      Returns:
        the string to show in the hover
      See Also:
        `getShowHover()`

    - #### getHSnapOrigin

          public int getHSnapOrigin()

      Get an offset to be used when calculating snap positioning. Returns 0 by default.
      Returns:
        The offset to use when snapping
      See Also:
        `getHSnapPosition(int)`, `Positioning overview and related methods`

    - #### getHSnapOrigin

          public int getHSnapOrigin(Canvas snapChild)

      Get an offset to be used when calculating snap positioning. Returns 0 by default.
      Parameters:
        `snapChild` - the child that is being snapped
      Returns:
        The offset to use when snapping
      See Also:
        `getHSnapPosition(int)`, `Positioning overview and related methods`

    - #### getHSnapPosition

          public int getHSnapPosition(int coordinate)

      Override this method to provide a custom snap-to grid. Note that you do not need to do this if your grid is regular (ie, grid points are every x pixels); regular grids should be defined using `snapHGap` and `snapVGap`. You should only override this method if you want to provide support for a grid of irregularly-placed points
      Parameters:
        `coordinate` - x-coordinate of the drag event relative to the inside of this widget
      Returns:
        The horizontal coordinate to snap to
      See Also:
        `Dragdrop overview and related methods`

    - #### getHSnapPosition

          public int getHSnapPosition(int coordinate,
                                      java.lang.String direction)

      Override this method to provide a custom snap-to grid. Note that you do not need to do this if your grid is regular (ie, grid points are every x pixels); regular grids should be defined using `snapHGap` and `snapVGap`. You should only override this method if you want to provide support for a grid of irregularly-placed points
      Parameters:
        `coordinate` - x-coordinate of the drag event relative to the inside of this widget
        `direction` - "before" or "after" denoting whether the returned coordinate should match the left or right edge of the current square. If unset `snapHDirection` will be used by default
      Returns:
        The horizontal coordinate to snap to
      See Also:
        `Dragdrop overview and related methods`

    - #### getImage

          public com.google.gwt.user.client.Element getImage(java.lang.String identifier)

      Retrieve a native image element by name.

      The image element must have been created from HTML generated by calling `imgHTML()` on this particular Canvas.

      Parameters:
        `identifier` - name of the image to get, as originally passed to `imgHTML()`
      Returns:
        DOM image element if found, else null
      See Also:
        `Images overview and related methods`

    - #### getInnerContentHeight

          public int getInnerContentHeight()

      Returns the amount of space available for interior content (or relatively positioned child widget(s)) without introducing clipping, scrolling or overflow.
      This is the space within the viewport of the widget (not including padding, and excluding margins, borders or scrollbars) rendered at its specified size.
      Returns:
        inner height of the widget in pixels
      See Also:
        `getInnerContentWidth()`, `getInnerHeight()`, `getInnerWidth()`, `Sizing overview and related methods`

    - #### getInnerContentWidth

          public int getInnerContentWidth()

      Returns the amount of space available for interior content (or relatively positioned child widget(s)) without introducing clipping, scrolling or overflow.
      This is the space within the viewport of the widget (not including padding, and excluding margins, borders or scrollbars) rendered at its specified size.
      Returns:
        inner height of the widget in pixels
      See Also:
        `getInnerContentHeight()`, `getInnerHeight()`, `getInnerWidth()`, `Sizing overview and related methods`

    - #### getInnerHeight

          public int getInnerHeight()

      Returns the amount of space available for (an) absolutely positioned child widget(s) or absolutely positioned HTML content, without introducing clipping, scrolling or overflow.

      This is the space within the viewport of the widget (including padding, but excluding margins, borders or scrollbars) rendered at its specified size.

      Returns:
        inner height of the widget in pixels
      See Also:
        `getInnerWidth()`, `getInnerContentHeight()`, `getInnerContentWidth()`, `Sizing overview and related methods`

    - #### getInnerWidth

          public int getInnerWidth()

      Returns the amount of space available for absolutely positioned child widget(s) or absolutely positioned HTML content, without introducing clipping, scrolling or overflow.

      This is the space within the viewport of the widget (including padding, but excluding margins, borders or scrollbars) rendered at its specified size.

      Returns:
        inner width of the widget in pixels
      See Also:
        `getInnerHeight()`, `getInnerContentHeight()`, `getInnerContentWidth()`, `Sizing overview and related methods`

    - #### getMasterCanvas

          public Canvas getMasterCanvas()

      Returns this canvas's "master" (the canvas to which it was added as a peer), if any.
      Returns:
        the master canvas, null if none exists.
      See Also:
        `Containment overview and related methods`

    - #### getOffsetX

          public int getOffsetX()

      Return the X-coordinate of the last event relative to the left edge of the content of this Canvas.
      NOTE: To get a coordinate relative to the viewport of this Canvas, subtract this.getScrollLeft()
      Returns:
      See Also:
        `Positioning overview and related methods`

    - #### getOffsetY

          public int getOffsetY()

      Return the Y-coordinate of the last event, relative to the top edge of the content of this Canvas.
      NOTE: To get a coordinate relative to the viewport of this Canvas, subtract this.getScrollTop()
      Returns:
      See Also:
        `Positioning overview and related methods`

    - #### getOuterElement

          public com.google.gwt.user.client.Element getOuterElement()

      Returns the outer DOM element of this Canvas. This method is provided for the very rare cases where a programmer needs to examine the DOM hierarchy created by a drawn Smart GWT component.

      Direct manipulation of the DOM elements created by Smart GWT components is not supported. Smart GWT components should be rendered or cleared using standard methods such as `draw()`, `clear()`. If direct integration with existing DOM structures is required, this should be achieved via the `htmlElement` attribute, rather than by attempting to move the component's outer element via native browser APIs.
      The content of Smart GWT components' DOM elements should also not be directly manipulated using native browser APIs - standard methods such as `setContents()`, `addChild()`, `removeChild()`, `markForRedraw()` and `redraw()` should be used instead.

      In some cases, the element returned may match the element returned by `getContentElement()`, but this will not always be the case.

      If the widget is undrawn, this method will return `null`.

      Returns:
        The outer DOM element for a drawn Canvas.

    - #### getPageBottom

          public int getPageBottom()

      Return the page-relative bottom coordinate of this object, in pixels.
      Returns:
        GLOBAL bottom coordinate
      See Also:
        `Positioning overview and related methods`

    - #### getPageLeft

          public int getPageLeft()

      Returns the page-relative left coordinate of the widget on the page, in pixels.
      Returns:
        global left coordinate
      See Also:
        `Positioning overview and related methods`

    - #### getPageRight

          public int getPageRight()

      Return the page-relative right coordinate of this object, in pixels.
      Returns:
        GLOBAL right coordinate
      See Also:
        `Positioning overview and related methods`

    - #### getPageTop

          public int getPageTop()

      Returns the page-relative top coordinate of the widget on the page, in pixels
      Returns:
        GLOBAL top coordinate
      See Also:
        `Positioning overview and related methods`

    - #### getPanelContainer

          public Canvas getPanelContainer()

      Returns this Canvas's "panel container". A panel container is a widget that manages a collection of panels, like a `TabSet` or `SectionStack`. If this Canvas is not a child of such a panel container, this method returns null.
      Returns:
        the Canvas's panel container, or null if the Canvas is not a chlld of a panel container

    - #### getRight

          public int getRight()

      Return the right coordinate of this object as rendered, relative to its enclosing context, in pixels.
      Returns:
        right coordinate
      See Also:
        `Positioning overview and related methods`

    - #### getScrollBottom

          public int getScrollBottom()

      Returns the scrollTop required to scroll vertically to the end of this widget's content.
      Returns:
        scroll bottom coordinate
      See Also:
        `Scrolling overview and related methods`

    - #### getScrollHeight

          public int getScrollHeight()

      Returns the scrollable height of the widget's contents, including children, ignoring clipping.
      Returns:
        height of the element that can scroll
      See Also:
        `Sizing overview and related methods`

    - #### getScrollLeft

          public int getScrollLeft()

      Get the number of pixels this Canvas is scrolled from its left edge.
      Returns:
        scrollLeft
      See Also:
        `Positioning overview and related methods`

    - #### getScrollRight

          public int getScrollRight()

      Returns the scrollLeft required to scroll horizontally to the end of this widget's content.
      Returns:
        scroll bottom coordinate
      See Also:
        `Scrolling overview and related methods`

    - #### getScrollTop

          public int getScrollTop()

      Get the number of pixels this Canvas is scrolled from its top edge.
      Returns:
        scrollTop
      See Also:
        `Positioning overview and related methods`

    - #### getScrollWidth

          public int getScrollWidth()

      Returns the scrollable width of the widget's contents, including children, ignoring clipping.
      Returns:
        the scrollable width of the widget's contents
      See Also:
        `Sizing overview and related methods`

    - #### getViewportHeight

          public int getViewportHeight()

      Returns the height of the viewport onto the scrollable content.
      Returns:
        height of the viewport, in pixels
      See Also:
        `Sizing overview and related methods`

    - #### getViewportWidth

          public int getViewportWidth()

      Returns the width of the viewport onto the scrollable content.
      Returns:
        width of the viewport, in pixels
      See Also:
        `Sizing overview and related methods`

    - #### getVisibleHeight

          public int getVisibleHeight()

      Return the visible height of the Canvas.
      Returns:
        visible height in pixels
      See Also:
        `Sizing overview and related methods`

    - #### getVisibleWidth

          public int getVisibleWidth()

      Return the visible width of the Canvas.
      Returns:
        visible width in pixels
      See Also:
        `Sizing overview and related methods`

    - #### getVSnapOrigin

          public int getVSnapOrigin()

      Get an offset to be used when calculating snap positioning. Returns 0 by default.
      Returns:
        The offset to use when snapping
      See Also:
        `getVSnapPosition(int)`, `Positioning overview and related methods`

    - #### getVSnapOrigin

          public int getVSnapOrigin(Canvas snapChild)

      Get an offset to be used when calculating snap positioning. Returns 0 by default.
      Parameters:
        `snapChild` - the child that is being snapped
      Returns:
        The offset to use when snapping
      See Also:
        `getVSnapPosition(int)`, `Positioning overview and related methods`

    - #### getVSnapPosition

          public int getVSnapPosition(int coordinate)

      Override this method to provide a custom snap-to grid. Note that you do not need to do this if your grid is regular (ie, grid points are every x pixels) - regular grids should be defined using `snapHGap` and `snapVGap`. You should only override this method if you want to provide support for a grid of irregularly-placed points
      Parameters:
        `coordinate` - y-coordinate of the drag event relative to the inside of this widget
      Returns:
        The vertical coordinate to snap to
      See Also:
        `Dragdrop overview and related methods`

    - #### getVSnapPosition

          public int getVSnapPosition(int coordinate,
                                      java.lang.String direction)

      Override this method to provide a custom snap-to grid. Note that you do not need to do this if your grid is regular (ie, grid points are every x pixels) - regular grids should be defined using `snapHGap` and `snapVGap`. You should only override this method if you want to provide support for a grid of irregularly-placed points
      Parameters:
        `coordinate` - y-coordinate of the drag event relative to the inside of this widget
        `direction` - "before" or "after" denoting whether the returned coordinate should match the top or bottom edge of the current square. If unset `snapHDirection` will be used by default
      Returns:
        The vertical coordinate to snap to
      See Also:
        `Dragdrop overview and related methods`

    - #### getZIndex

          public int getZIndex(boolean resolveToNumber)

      Get the z-Index of this canvas.
      Parameters:
        `resolveToNumber` - If passed `true`, for undrawn widgets, resolve "auto" to the next available zIndex.
      Returns:
      See Also:
        `ZIndex overview and related methods`

    - #### handleHover

          public void handleHover()

      Handler fired on a delay when the user hovers the mouse over this hover-target. Default implementation will fire `this.hover()` (if defined), and handle showing the hover canvas if `this.showHover` is true.
      See Also:
        `getCanHover()`, `getShowHover()`, `HoverEvent`

    - #### hide

          public void hide()

      Sets the widget's CSS visibility attribute to "hidden".
      See Also:
        `Visibility overview and related methods`, Show & Hide Example

    - #### hideClickMask

          public void hideClickMask()

      Hides the click mask associated with this canvas.
      See Also:
        `showClickMask(com.smartgwt.client.core.Function, com.smartgwt.client.types.ClickMaskMode, com.smartgwt.client.widgets.Canvas[])`

    - #### hideClickMask

          public void hideClickMask(java.lang.String ID)

      Hides the click mask associated with this canvas.
      Parameters:
        `ID` - optional ID of specific clickMask to hide. If not passed, defaults to hiding the click mask associated with this widget only.
      See Also:
        `showClickMask(com.smartgwt.client.core.Function, com.smartgwt.client.types.ClickMaskMode, com.smartgwt.client.widgets.Canvas[])`

    - #### hideComponentMask

          public void hideComponentMask()

      Hide the `component level clickMask` for this widget

    - #### hideComponentMask

          public void hideComponentMask(boolean suppressFocusReset)

      Hide the `component level clickMask` for this widget
      Parameters:
        `suppressFocusReset` - By default when the component-level mask is hidden it will attempt to reset focus to whatever had focus before the mask was shown. Pass this parameter to suppress this behavior.

    - #### hideContextMenu

          public void hideContextMenu()

      The default implementation of this method hides the contextMenu currently being shown for this component (which occurs when the mouse button that toggles the context menu is released). Override if you want some other behavior.
      See Also:
        `ShowContextMenuEvent`, `Menu.hideContextMenu()`, `getOffsetX()`, `getOffsetY()`

    - #### addHoverHandler

          public com.google.gwt.event.shared.HandlerRegistration addHoverHandler(HoverHandler handler)

      Add a hover handler.

      If `canHover` is true for this widget, the `hover` string method will be fired when the user hovers over this canvas. If this method returns false, it will suppress the default behavior of showing a hover canvas if `this.showHover` is true.

      Specified by:
        `addHoverHandler` in interface `HasHoverHandlers`
      Parameters:
        `handler` - the hover handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addHoverHiddenHandler

          public com.google.gwt.event.shared.HandlerRegistration addHoverHiddenHandler(HoverHiddenHandler handler)

      Add a hoverHidden handler.

      If `showHover` is true for this canvas, this notification method will be fired whenever the hover shown in response to `handleHover()` is hidden. This method may be observed or overridden.

      Specified by:
        `addHoverHiddenHandler` in interface `HasHoverHiddenHandlers`
      Parameters:
        `handler` - the hoverHidden handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### intersects

          public java.lang.Boolean intersects(Canvas other)

      Returns true if the rectangles of this widget and the specified widget overlap.
      Parameters:
        `other` - other canvas to test for intersection
      Returns:
        true if this canvas intersects other; false otherwise
      See Also:
        `Positioning overview and related methods`

    - #### isDirty

          public java.lang.Boolean isDirty()

      Returns whether a canvas is waiting to be redrawn. Will return true if `markForRedraw()` has been called, but this canvas has not yet been redrawn.
      Returns:
        true is this canvas needs to be redrawn; false otherwise
      See Also:
        `Drawing overview and related methods`

    - #### isDisabled

          public java.lang.Boolean isDisabled()

      Is this canvas disabled? Note that the disabled state is inherited - this method will return true if this widget, or any of its ancestors are marked disabled.
      Returns:
        true if the widget or any widget above it in the containment hierarchy are disabled.
      See Also:
        `Enable overview and related methods`

    - #### isDrawn

          public java.lang.Boolean isDrawn()

      Returns the boolean true, if the widget has been completely drawn, and false otherwise.
      Overrides:
        `isDrawn` in class `BaseWidget`
      Returns:
        true if drawn, false if not drawn
      See Also:
        `Drawing overview and related methods`

    - #### isFocused

          public java.lang.Boolean isFocused()

      Returns true if this Canvas has the keyboard focus. Note that focus is assigned asynchronously in Internet Explorer, so in that browser only, this method can correctly return false when, intuitively, you would expect it to return true:

                someCanvas.focus();
                if (someCanvas.isFocused()) {
                    // In most browsers we would get here, but not in Internet Explorer!
                }

      Returns:
        whether this Canvas has the keyboard focus
      See Also:
        `containsFocus()`

    - #### addKeyDownHandler

          public com.google.gwt.event.shared.HandlerRegistration addKeyDownHandler(KeyDownHandler handler)

      Add a keyDown handler.

      Executed when a key is pressed on a focusable widget (`Canvas.canFocus`: true).

      Use `EventHandler.getKey()` to find out the String of the key that was pressed, and use `EventHandler.shiftKeyDown()` and related functions to determine whether modifier keys were down.

      Specified by:
        `addKeyDownHandler` in interface `HasKeyDownHandlers`
      Parameters:
        `handler` - the keyDown handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addKeyPressHandler

          public com.google.gwt.event.shared.HandlerRegistration addKeyPressHandler(KeyPressHandler handler)

      Add a keyPress handler.

      Executed when a key is pressed and released on a focusable widget (`Canvas.canFocus`: true).

      Use `EventHandler.getKey()` to find out the String of the key that was pressed, and use `EventHandler.shiftKeyDown()` and related functions to determine whether modifier keys were down.

      Specified by:
        `addKeyPressHandler` in interface `HasKeyPressHandlers`
      Parameters:
        `handler` - the keyPress handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### keyUp

          public java.lang.Boolean keyUp()

      Executed when a key is released on a focusable widget (`canFocus`: true).

      Use `EventHandler.getKey()` to find out the String of the key that was pressed, and use `EventHandler.shiftKeyDown()` and related functions to determine whether modifier keys were down.

      Returns:
        false to prevent this event from bubbling to this widget's parent, true or undefined to bubble.
      See Also:
        `getCanFocus()`

    - #### layoutChildren

          public void layoutChildren(java.lang.String reason)

      `layoutChildren()` is where a Canvas should implement a sizing policy for it's Canvas children. Since `layoutChildren` calls parentResized() on its children, `parentResized()` is a good place for a child to implement a layout policy that can be used within any parent.

      Recommended practice for a Canvas that manages Canvas children is to create those children without any initial coordinate or size settings and do all sizing when layoutChildren() is called.

      layoutChildren() is always called at least once before children are drawn, and is called automatically whenever the viewport size changes (which includes both resizing and introduction/removal of scrolling). layoutChildren() can also be manually invoked in any other component-specific situation which changes the layout.

      NOTE: layoutChildren() may be called before draw() if a widget is resized before draw(), so be sure to avoid errors such as assuming that any children you automatically create have already been created.

      NOTE: auto-sizing: layoutChildren() is also called once during the initial draw(), before children are drawn, with a "reason" of "initial draw". During this invocation of layoutChildren() it is legal to directly draw children (call child.draw()), which is otherwise never allowed. This allows a Canvas to implement an auto-sizing layout policy by drawing some children before deciding on the sizes of remaining children, which is far more efficient than drawing all children and resizing some of them after they are drawn.

      Parameters:
        `reason` - reason why layoutChildren() is being called, passed when framework code invokes layoutChildren()
      See Also:
        `Sizing overview and related methods`

    - #### linkHTML

          public java.lang.String linkHTML(java.lang.String href)

      Generates the HTML for a standard link (anchor) element.
      Parameters:
        `href` - URL for the link to point to
      Returns:
        HTML for the link

    - #### linkHTML

          public java.lang.String linkHTML(java.lang.String href,
                                           java.lang.String text)

      See Also:
        `linkHTML(java.lang.String)`

    - #### linkHTML

          public java.lang.String linkHTML(java.lang.String href,
                                           java.lang.String text,
                                           java.lang.String target)

      See Also:
        `linkHTML(java.lang.String)`

    - #### linkHTML

          public java.lang.String linkHTML(java.lang.String href,
                                           java.lang.String text,
                                           java.lang.String target,
                                           java.lang.String ID)

      See Also:
        `linkHTML(java.lang.String)`

    - #### linkHTML

          public java.lang.String linkHTML(java.lang.String href,
                                           java.lang.String text,
                                           java.lang.String target,
                                           java.lang.String ID,
                                           java.lang.Integer tabIndex)

      See Also:
        `linkHTML(java.lang.String)`

    - #### linkHTML

          public java.lang.String linkHTML(java.lang.String href,
                                           java.lang.String text,
                                           java.lang.String target,
                                           java.lang.String ID,
                                           java.lang.Integer tabIndex,
                                           java.lang.String accessKey)

      Generates the HTML for a standard link (anchor) element.
      Parameters:
        `href` - URL for the link to point to
        `text` - HTML to display in the link element (defaults to the href). See `HTMLString`
        `target` - Target window for the link (defaults to opening in a new, unnamed window)
        `ID` - optional ID for the link element to be written out
        `tabIndex` - optional tabIndex for the link
        `accessKey` - optional accessKey for the link
      Returns:
        HTML for the link

    - #### markForDestroy

          public void markForDestroy()

      `destroy()` this canvas on a timeout. This method should be used instead of calling `canvas.destroy()` directly unless there's a reason a the canvas needs to be destroyed synchronously. By using a timeout, this method ensures the `destroy()` will occur after the current thread of execution completes. This allows you to easily mark canvases for destruction while they're handling events, which must complete before the canvas can be destroyed.
      See Also:
        `BaseWidget.destroy()`

    - #### markForRedraw

          public void markForRedraw()

      Marks the widget as "dirty" so that it will be added to a queue for redraw. Redraw of dirty components is handled by a looping timer and will after a very short delay (typically less than 100ms). In most cases it is recommended that developers use `markForRedraw()` instead of calling `redraw()` directly. Since this method queues the redraw, multiple calls to markForRedraw() within a single thread of execution will only lead to a single DOM manipulation which greatly improves application performance.
      See Also:
        `Drawing overview and related methods`

    - #### markForRedraw

          public void markForRedraw(java.lang.String reason)

      Marks the widget as "dirty" so that it will be added to a queue for redraw. Redraw of dirty components is handled by a looping timer and will after a very short delay (typically less than 100ms). In most cases it is recommended that developers use `markForRedraw()` instead of calling `redraw()` directly. Since this method queues the redraw, multiple calls to markForRedraw() within a single thread of execution will only lead to a single DOM manipulation which greatly improves application performance.
      Parameters:
        `reason` - reason for performing the redraw
      See Also:
        `Drawing overview and related methods`

    - #### addMouseDownHandler

          public com.google.gwt.event.shared.HandlerRegistration addMouseDownHandler(MouseDownHandler handler)

      Add a mouseDown handler.

      Executed when the left mouse button is pressed on this widget. No default implementation.

      Specified by:
        `addMouseDownHandler` in interface `HasMouseDownHandlers`
      Parameters:
        `handler` - the mouseDown handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addMouseMoveHandler

          public com.google.gwt.event.shared.HandlerRegistration addMouseMoveHandler(MouseMoveHandler handler)

      Add a mouseMove handler.

      Executed when the mouse moves within this widget. No default implementation.

      Specified by:
        `addMouseMoveHandler` in interface `HasMouseMoveHandlers`
      Parameters:
        `handler` - the mouseMove handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addMouseOutHandler

          public com.google.gwt.event.shared.HandlerRegistration addMouseOutHandler(MouseOutHandler handler)

      Add a mouseOut handler.

      Executed when the mouse leaves this widget. No default implementation.

      Specified by:
        `addMouseOutHandler` in interface `HasMouseOutHandlers`
      Parameters:
        `handler` - the mouseOut handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addMouseOverHandler

          public com.google.gwt.event.shared.HandlerRegistration addMouseOverHandler(MouseOverHandler handler)

      Add a mouseOver handler.

      Executed when mouse enters this widget. No default implementation.

      Specified by:
        `addMouseOverHandler` in interface `HasMouseOverHandlers`
      Parameters:
        `handler` - the mouseOver handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addMouseStillDownHandler

          public com.google.gwt.event.shared.HandlerRegistration addMouseStillDownHandler(MouseStillDownHandler handler)

      Add a mouseStillDown handler.

      Repeating notification method for the user holding the left mouse button down over this canvas.

      The `mouseStillDown` event is fired immediately when the mouse goes down. If the user holds the mouse down, after a pause of `Canvas.mouseStillDownInitialDelay`, it will begin to fire repeatedly every `Canvas.mouseStillDownDelay` milliseconds.

      This provides developers with a simple way to handle the common "repeated action" use case where a user can click a UI element to perform an action once, or click and hold to perform the action repeatedly.
      Examples of this include standard scrollbar button behavior and buttons to increase or decrease the value in a spinner type input element.

      This event is not native to JavaScript, but is provided by the ISC system.

      Specified by:
        `addMouseStillDownHandler` in interface `HasMouseStillDownHandlers`
      Parameters:
        `handler` - the mouseStillDown handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addMouseUpHandler

          public com.google.gwt.event.shared.HandlerRegistration addMouseUpHandler(MouseUpHandler handler)

      Add a mouseUp handler.

      Executed when the left mouse is released on this widget. No default implementation.

      Specified by:
        `addMouseUpHandler` in interface `HasMouseUpHandlers`
      Parameters:
        `handler` - the mouseUp handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addMouseWheelHandler

          public com.google.gwt.event.shared.HandlerRegistration addMouseWheelHandler(MouseWheelHandler handler)

      Add a mouseWheel handler.

      Executed when the mouse wheel is actuated.

      Specified by:
        `addMouseWheelHandler` in interface `HasMouseWheelHandlers`
      Parameters:
        `handler` - the mouseWheel handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### moveAbove

          public void moveAbove(Canvas canvas)

      Puts this widget just above the specified widget in the stacking order, so it appears in front of the specified widget if both widgets have the same parent.
      Parameters:
        `canvas` - canvas to move above
      See Also:
        `ZIndex overview and related methods`, Layer Example

    - #### moveBelow

          public void moveBelow(Canvas canvas)

      Puts this widget just below the specified widget in the stacking order, so it appears behind the specified widget if both widgets have the same parent.
      Parameters:
        `canvas` - canvas to move below
      See Also:
        `ZIndex overview and related methods`, Layer Example

    - #### moveBy

          public java.lang.Boolean moveBy(int deltaX,
                                          int deltaY)

      Moves the widget deltaX pixels to the right and deltaY pixels down. Pass negative numbers to move up and/or to the left.
      Parameters:
        `deltaX` - amount to move horizontally (may be negative)
        `deltaY` - amount to move vertically (may be negative)
      Returns:
        whether the component actually moved
      See Also:
        `Positioning overview and related methods`, Move Example

    - #### addMovedHandler

          public com.google.gwt.event.shared.HandlerRegistration addMovedHandler(MovedHandler handler)

      Add a moved handler.

      Notification method fired when this component is explicitly moved. Note that a component's position on the screen may also changed due to an ancestor being moved. The `Canvas.parentMoved()` method provides a notification entry point to catch that case as well.

      Specified by:
        `addMovedHandler` in interface `HasMovedHandlers`
      Parameters:
        `handler` - the moved handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### moveTo

          public boolean moveTo(int left,
                                int top)

      Moves the widget so that its top-left corner is at the specified coordinates.

      This method will also accept a single parameter as an object array with left and top given as properties.

      Parameters:
        `left` - x-coordinate to move to in LOCAL coordinates or Object with left and top properties.
        `top` - y-coordinate to move to in LOCAL coordinates
      Returns:
        whether the component actually moved
      See Also:
        `Positioning overview and related methods`, Move Example

    - #### addDropHandler

          public com.google.gwt.event.shared.HandlerRegistration addDropHandler(DropHandler handler)

      Add a drop handler.

      Notification method fired when the user drops another canvas onto this one. Returning `false` from this method will prevent any default drop behavior from occurring

      Specified by:
        `addDropHandler` in interface `HasDropHandlers`
      Parameters:
        `handler` - the drop handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### pageScrollDown

          public void pageScrollDown()

      This method is the programmatic equivalent of the user pressing the "Page Down" key while this widget has the focus. It scrolls the widget's content downwards by the viewport height, if the content can be scrolled that far downwards

    - #### pageScrollUp

          public void pageScrollUp()

      This method is the programmatic equivalent of the user pressing the "Page Up" key while this widget has the focus. It scrolls the widget's content upwards by the viewport height, if the content can be scrolled that far upwards

    - #### addParentMovedHandler

          public com.google.gwt.event.shared.HandlerRegistration addParentMovedHandler(ParentMovedHandler handler)

      Add a parentMoved handler.

      Notification method fire when an ancestor of this component's position changes.

      Specified by:
        `addParentMovedHandler` in interface `HasParentMovedHandlers`
      Parameters:
        `handler` - the parentMoved handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### placeNear

          public void placeNear()

      Move this canvas to the specified point, or as close to the specified point as possible without this widget extending beyond the edge of the browser viewport on any side.
      See Also:
        `Positioning overview and related methods`

    - #### placeNear

          public void placeNear(int left)

      See Also:
        `placeNear()`

    - #### placeNear

          public void placeNear(int left,
                                int top)

      Move this canvas to the specified point, or as close to the specified point as possible without this widget extending beyond the edge of the browser viewport on any side.
      Parameters:
        `left` - Left coordinate (defaults to mouse position)
        `top` - Top coordinate (defaults to mouse position)
      See Also:
        `Positioning overview and related methods`

    - #### redraw

          public void redraw()

      Redraws the widget immediately with its current property values. Generally, if you want a Canvas to redraw, call markForRedraw() - this will cause the Canvas to be redrawn when current processing ends, so that a series of modifications made to a Canvas will cause it to redraw only once. Only call redraw() directly if you need immediate responsiveness, for example you are redrawing in response to continuous mouse motion.
      See Also:
        `Drawing overview and related methods`

    - #### redraw

          public void redraw(java.lang.String reason)

      Redraws the widget immediately with its current property values. Generally, if you want a Canvas to redraw, call markForRedraw() - this will cause the Canvas to be redrawn when current processing ends, so that a series of modifications made to a Canvas will cause it to redraw only once. Only call redraw() directly if you need immediate responsiveness, for example you are redrawing in response to continuous mouse motion.
      Parameters:
        `reason` - reason for performing the redraw
      See Also:
        `Drawing overview and related methods`

    - #### removeChild

          public void removeChild(Canvas child)

      Remove a child from this parent.
      Parameters:
        `child` - Child canvas to remove from this parent.
      See Also:
        `Containment overview and related methods`

    - #### removeChild

          public void removeChild(Canvas child,
                                  java.lang.String name)

      Remove a child from this parent.
      Parameters:
        `child` - Child canvas to remove from this parent.
        `name` - If the child canvas was assigned a name when added via addChild(), it should be passed in here to ensure no reference is kept to the child
      See Also:
        `Containment overview and related methods`

    - #### removePeer

          public void removePeer(Canvas peer)

      Remove a peer from this Canvas
      Parameters:
        `peer` - Peer to be removed from this canvas
      See Also:
        `Containment overview and related methods`

    - #### removePeer

          public void removePeer(Canvas peer,
                                 java.lang.String name)

      Remove a peer from this Canvas
      Parameters:
        `peer` - Peer to be removed from this canvas
        `name` - If this peer was assigned a name when added via addPeer(), it should be passed in here to ensure no reference is kept to the peer
      See Also:
        `Containment overview and related methods`

    - #### removeSnapAlignCandidate

          public void removeSnapAlignCandidate(Canvas candidate)

      Remove a candidate from `snapAlignCandidates`. If the passed widget was not actually a candidate, nothing happens and no warning is logged.
      Parameters:
        `candidate` -

    - #### resizeBy

          public java.lang.Boolean resizeBy(int deltaX,
                                            int deltaY)

      Resizes the widget, adding deltaX to its width and deltaY to its height (moves the right and/or bottom sides of the widget).
      Parameters:
        `deltaX` - amount to resize horizontally (may be negative)
        `deltaY` - amount to resize vertically (may be negative)
      Returns:
        whether the component actually changed size
      See Also:
        `Sizing overview and related methods`, Resize Example

    - #### addResizedHandler

          public com.google.gwt.event.shared.HandlerRegistration addResizedHandler(ResizedHandler handler)

      Add a resized handler.

      Observable method called whenever a Canvas changes size. Note that if this canvas is `overflow:"visible"`, and is waiting for a queued redraw (see `Canvas.isDirty()`), the value for `Canvas.getVisibleWidth()` and `Canvas.getVisibleHeight()` will be unreliable until `redraw()` fires.

      Specified by:
        `addResizedHandler` in interface `HasResizedHandlers`
      Parameters:
        `handler` - the resized handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### resizeTo

          public java.lang.Boolean resizeTo(int width,
                                            int height)

      Resizes the widget to the specified width and height (moves the right and/ or bottom sides of the widget). The width and height parameters can be expressed as a percentage of viewport size or as the number of pixels.
      Parameters:
        `width` - new width for canvas.
        `height` - new height for canvas
      Returns:
        whether the size actually changed
      See Also:
        `Sizing overview and related methods`, Resize Example

    - #### revealChild

          public void revealChild(java.lang.String child)

      For "panel container" widgets like `TabSet` or `SectionStack`, this method reveals the child Canvas passed in by whatever means is applicable for the particular type of container. For example, when called on a TabSet, it selects the tab containing the passed-in child.

      For other types of Canvas, this method simply shows the passed-in child if it is not currently visible.

      If the passed-in widget is not a child of this Canvas, this method has no effect

      Parameters:
        `child` - the child Canvas to reveal, or its global ID

    - #### revealChild

          public void revealChild(Canvas child)

      For "panel container" widgets like `TabSet` or `SectionStack`, this method reveals the child Canvas passed in by whatever means is applicable for the particular type of container. For example, when called on a TabSet, it selects the tab containing the passed-in child.

      For other types of Canvas, this method simply shows the passed-in child if it is not currently visible.

      If the passed-in widget is not a child of this Canvas, this method has no effect

      Parameters:
        `child` - the child Canvas to reveal, or its global ID

    - #### addRightMouseDownHandler

          public com.google.gwt.event.shared.HandlerRegistration addRightMouseDownHandler(RightMouseDownHandler handler)

      Add a rightMouseDown handler.

      Executed when the right mouse button is pressed on this widget. No default implementation.

      Specified by:
        `addRightMouseDownHandler` in interface `HasRightMouseDownHandlers`
      Parameters:
        `handler` - the rightMouseDown handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### scrollBy

          public void scrollBy(int dX,
                               int dY)

      Scroll this widget by some pixel increment in either (or both) direction(s).
      Parameters:
        `dX` - Number of pixels to scroll horizontally
        `dY` - Number of pixels to scroll vertically
      See Also:
        `Scrolling overview and related methods`

    - #### scrollByPercent

          public void scrollByPercent(int dX,
                                      int dY)

      Scroll this widget by some percentage of scroll size in either (or both) direction(s).
      Parameters:
        `dX` - Percentage to scroll horizontally. Will accept either a numeric percent value, or a string like "10%".
        `dY` - Percentage to scroll horizontally. Will accept either a numeric percent value, or a string like "10%".
      See Also:
        `Scrolling overview and related methods`

    - #### addScrolledHandler

          public com.google.gwt.event.shared.HandlerRegistration addScrolledHandler(ScrolledHandler handler)

      Add a scrolled handler.

      Notification that this component has just scrolled. Use with observation.

      Fires for both CSS and `"synthetic" scrollbars`.

      Specified by:
        `addScrolledHandler` in interface `HasScrolledHandlers`
      Parameters:
        `handler` - the scrolled handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### scrollTo

          public void scrollTo()

      Scrolls the content of the widget so that the origin (top-left corner) of the content is left pixels to the left and top pixels above the widget's top-left corner (but still clipped by the widget's dimensions).

      This is guaranteed to be called whenever this Canvas is scrolled, whether scrolling is initiated programmatically, by custom scrollbars, or a by a native scrollbar.

      See Also:
        `Scrolling overview and related methods`

    - #### scrollTo

          public void scrollTo(java.lang.Integer left)

      See Also:
        `scrollTo()`

    - #### scrollTo

          public void scrollTo(java.lang.Integer left,
                               java.lang.Integer top)

      Scrolls the content of the widget so that the origin (top-left corner) of the content is left pixels to the left and top pixels above the widget's top-left corner (but still clipped by the widget's dimensions).

      This is guaranteed to be called whenever this Canvas is scrolled, whether scrolling is initiated programmatically, by custom scrollbars, or a by a native scrollbar.

      Parameters:
        `left` - the left coordinate
        `top` - the top coordinate
      See Also:
        `Scrolling overview and related methods`

    - #### scrollToBottom

          public void scrollToBottom()

      Vertically scrolls the content of the widget to the end of its content
      See Also:
        `Scrolling overview and related methods`

    - #### scrollToLeft

          public void scrollToLeft()

      Horizontally scrolls the content of the widget to 0
      See Also:
        `Scrolling overview and related methods`

    - #### scrollToPercent

          public void scrollToPercent(int left,
                                      int top)

      Scroll this widget to some position specified as a percentage of scroll size in either (or both) direction(s).
      Parameters:
        `left` - Left Percentage position to scroll to Will accept either a numeric percent value, or a string like "10%".
        `top` - Top Percentage position to scroll to Will accept either a numeric percent value, or a string like "10%".
      See Also:
        `Scrolling overview and related methods`

    - #### scrollToRight

          public void scrollToRight()

      Horizontally scrolls the content of the widget to the end of its content
      See Also:
        `Scrolling overview and related methods`

    - #### scrollToTop

          public void scrollToTop()

      Vertically scrolls the content of the widget to 0
      See Also:
        `Scrolling overview and related methods`

    - #### sendToBack

          public void sendToBack()

      Puts this widget at the bottom of the stacking order, so it appears behind all other widgets in the same parent.
      See Also:
        `ZIndex overview and related methods`, Layer Example

    - #### setBottom

          public void setBottom(int bottom)

      Resizes the widget vertically to position its bottom edge at the specified coordinate.

      NOTE: if you're setting multiple coordinates, use setRect(), moveTo() or resizeTo() instead

      Parameters:
        `bottom` - new bottom coordinate
      See Also:
        `Sizing overview and related methods`

    - #### setEditMode

          public void setEditMode(boolean editingOn)

      Enable or disable edit mode for this component.

      To disable edit mode just pass `editingOn` as false. The other parameters are not needed.

      To enable edit mode on this component all three parameters are required. The `editNode` is the edit node for this component as it exists within the `editContext`.

      An alternative method, `EditContext.enableEditing()`, can be used when only an editContext and editNode are available.

      Placing a component into `editMode` causes the component's `editProxy` to be created.

      Parameters:
        `editingOn` - true to enable editMode; false to disable
      See Also:
        `EditTree`, `EditContext`

    - #### setEditMode

          public void setEditMode(boolean editingOn,
                                  EditContext editContext)

      See Also:
        `setEditMode(boolean)`

    - #### setEditMode

          public void setEditMode(boolean editingOn,
                                  EditContext editContext,
                                  EditNode editNode)

      Enable or disable edit mode for this component.

      To disable edit mode just pass `editingOn` as false. The other parameters are not needed.

      To enable edit mode on this component all three parameters are required. The `editNode` is the edit node for this component as it exists within the `editContext`.

      An alternative method, `EditContext.enableEditing()`, can be used when only an editContext and editNode are available.

      Placing a component into `editMode` causes the component's `editProxy` to be created.

      Parameters:
        `editingOn` - true to enable editMode; false to disable
        `editContext` - the EditContext
        `editNode` - the EditNode
      See Also:
        `EditTree`, `EditContext`

    - #### setImage

          public void setImage(java.lang.String identifier,
                               java.lang.String URL)

      Set the URL of an image element by name.

      The image element must have been created from HTML generated by calling `canvas.imgHTML()` on this particular Canvas.

      Parameters:
        `identifier` - name of the image to change, as originally passed to `imgHTML`
        `URL` - URL for the image. See `SCImgURL`
      See Also:
        `Images overview and related methods`

    - #### setImage

          public void setImage(java.lang.String identifier,
                               java.lang.String URL,
                               java.lang.String imgDir)

      Set the URL of an image element by name.

      The image element must have been created from HTML generated by calling `canvas.imgHTML()` on this particular Canvas.

      Parameters:
        `identifier` - name of the image to change, as originally passed to `imgHTML`
        `URL` - URL for the image. See `SCImgURL`
        `imgDir` - optional image directory, overrides the default for this Canvas
      See Also:
        `Images overview and related methods`

    - #### setPageLeft

          public void setPageLeft(int left)

      Set the page-relative left coordinate of this widget.
      Parameters:
        `left` - new left coordinate in pixels
      See Also:
        `Positioning overview and related methods`

    - #### setPageTop

          public void setPageTop(int top)

      Set the page-relative top coordinate of this widget.
      Parameters:
        `top` - new top coordinate in pixels
      See Also:
        `Positioning overview and related methods`

    - #### setRight

          public void setRight(int right)

      Resizes the widget horizontally to position its right side at the specified coordinate.

      NOTE: if you're setting multiple coordinates, use setRect(), moveTo() or resizeTo() instead

      Parameters:
        `right` - new right coordinate
      See Also:
        `Sizing overview and related methods`

    - #### shouldDragScroll

          public void shouldDragScroll()

      If this widget is showing scrollbars, and a user drags close to the edge of the viewport, should we scroll the viewport in the appropriate direction? Returns this.canDragScroll if there are scrollbars, else false.
      See Also:
        `Dragdrop overview and related methods`

    - #### show

          public void show()

      Sets this widget's visibility to "inherit", so that it becomes visible if all of its parents are visible or it has no parents.

      If the widget has not yet been drawn (and doesn't have a parent or master), this method calls the draw method as well.

      See Also:
        `Visibility overview and related methods`, Show & Hide Example

    - #### showComponentMask

          public void showComponentMask()

      Temporariy block all user interaction with children of this widget, with the exception of those passed in in the `unmaskedChildren` parameter. Children will remain blocked until `hideComponentMask()` is called.

      This method will show the `componentMask` canvas to block mouse interaction with children, and temporarily remove masked children from the page's tab-order.

      This behavior differs from the standard `click mask` in that the modal mask shown by `showClickMask()` will cover the entire screen and typically only allow "unmasking" of top level components.

      Use `hideComponentMask()` to hide the component level mask.

    - #### showComponentMask

          public void showComponentMask(Canvas... unmaskedChildren)

      Temporariy block all user interaction with children of this widget, with the exception of those passed in in the `unmaskedChildren` parameter. Children will remain blocked until `hideComponentMask()` is called.

      This method will show the `componentMask` canvas to block mouse interaction with children, and temporarily remove masked children from the page's tab-order.

      This behavior differs from the standard `click mask` in that the modal mask shown by `showClickMask()` will cover the entire screen and typically only allow "unmasking" of top level components.

      Use `hideComponentMask()` to hide the component level mask.

      Parameters:
        `unmaskedChildren` - Children passed into this parameter will continue to be interactive while other children are blocked. They will be moved above the componentMask in the page's z-order and remain accessible via keyboard navigation. Note that this array should contain direct children of this widget only.

    - #### addShowContextMenuHandler

          public com.google.gwt.event.shared.HandlerRegistration addShowContextMenuHandler(ShowContextMenuHandler handler)

      Add a showContextMenu handler.

      Executed when the right mouse button is clicked. The default implementation of this method auto-creates a `Menu` from the `Canvas.contextMenu` property on this component and then calls `Menu.showContextMenu()` on it to show it.

      If you want to show a standard context menu, you can simply define your Menu and set it as the contextMenu property on your component - you do not need to override this method.

      If you want to do some other processing before showing a menu or do something else entirely, then you should override this method. Note that the return value from this method controls whether or not the native browser context menu is shown.

      Specified by:
        `addShowContextMenuHandler` in interface `HasShowContextMenuHandlers`
      Parameters:
        `handler` - the showContextMenu handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### showNextTo

          public void showNextTo(Canvas otherWidget)

      Show this widget next to another widget on the page, positioned such that it will not extend beyond the browser viewport.

      Note that this method simply sets the coordinates of the widget and displays it (using a `animateShow()` by default). It will not change the `parentElement` of either component.

      An example use case might be showing a menu next to a menu-button.

      Parameters:
        `otherWidget` - Canvas to show next to

    - #### showNextTo

          public void showNextTo(Canvas otherWidget,
                                 java.lang.String side)

      See Also:
        `showNextTo(com.smartgwt.client.widgets.Canvas)`

    - #### showNextTo

          public void showNextTo(Canvas otherWidget,
                                 java.lang.String side,
                                 boolean canOcclude)

      See Also:
        `showNextTo(com.smartgwt.client.widgets.Canvas)`

    - #### showNextTo

          public void showNextTo(Canvas otherWidget,
                                 java.lang.String side,
                                 boolean canOcclude,
                                 boolean skipAnimation)

      Show this widget next to another widget on the page, positioned such that it will not extend beyond the browser viewport.

      Note that this method simply sets the coordinates of the widget and displays it (using a `animateShow()` by default). It will not change the `parentElement` of either component.

      An example use case might be showing a menu next to a menu-button.

      Parameters:
        `otherWidget` - Canvas to show next to
        `side` - Which side of the other canvas should we put. Options are "top", "bottom", "left", "right". (Defaults to "right")
        `canOcclude` - This argument controls whether this canvas can be positioned on top of the other widget if there isn't room to put it next to the other widget extending out of the browser viewport
        If 'canOcclude' is true, simply shift this widget over the other widget, so that it ends up onscreen. If 'canOcclude' is false, avoid extending offscreen by positioning this widget on the other side of the other widget.
        `skipAnimation` - If `false` do not use an animation to show the component.

    - #### showRecursively

          public void showRecursively()

      Recursively show the canvas and all it's parents so the canvas will be visible.

      If the widget has not yet been drawn, this method calls the draw method as well.

      See Also:
        `Visibility overview and related methods`

    - #### updateHover

          public void updateHover()

      If this canvas is currently showing a hover (see `handleHover()`), this method can be called to update the contents of the hover. Has no effect if the hover canvas is not showing for this widget.

    - #### updateHover

          public void updateHover(java.lang.String hoverHTML)

      If this canvas is currently showing a hover (see `handleHover()`), this method can be called to update the contents of the hover. Has no effect if the hover canvas is not showing for this widget.
      Parameters:
        `hoverHTML` - Option to specify new HTML for the hover. If not passed, the result of `this.getHoverHTML()` will be used instead. Note that if the hover HTML is empty the hover will be hidden.

    - #### addVisibilityChangedHandler

          public com.google.gwt.event.shared.HandlerRegistration addVisibilityChangedHandler(VisibilityChangedHandler handler)

      Add a visibilityChanged handler.

      Notification fired when this canvas becomes visible or hidden to the user. Note - this method is fired when the `Canvas.isVisible()` state of this component changes. It may be fired in response an explicit call to `Canvas.show()` or `Canvas.hide()` or `Canvas.setVisibility()`, or in response to a parent component being shown or hidden when this widgets `Canvas.visibility` is set to "inherit".

      Note that a call to `Canvas.show()` or `Canvas.hide()` will not always fire this notification. If this widget has a hidden parent, show or hide would change this components `Canvas.visibility` property, and may update the CSS visibility attribute of the drawn handle in the DOM, but would not actually hide or reveal the component to the user and as such the notification would not fire.

      Note also that this notification will only be fired for components which have been `drawn`.

      Specified by:
        `addVisibilityChangedHandler` in interface `HasVisibilityChangedHandlers`
      Parameters:
        `handler` - the visibilityChanged handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### getEventEdge

          public static EdgeName getEventEdge()

      Check if an event is within an "edge" of this canvas.
      Returns:
        edge where the mouse is positioned, or null if not within a legal edge (including being in the center)
      See Also:
        `getResizeFrom()`

    - #### getEventEdge

          public static EdgeName getEventEdge(EdgeName... edgeMask)

      Check if an event is within an "edge" of this canvas.
      Parameters:
        `edgeMask` - Array of legal edges. Default is all the edges that allow resizing (see `resizeFrom`)
      Returns:
        edge where the mouse is positioned, or null if not within a legal edge (including being in the center)
      See Also:
        `getResizeFrom()`

    - #### getSnapPosition

          public static Point getSnapPosition(Canvas target,
                                              java.lang.String snapTo,
                                              Canvas snapper)

      Return the position for `snapper` to be placed in order to "snap to" an edge or corner of `target`, in the same sense as `snapTo`.

      Default for `snapEdge` is the opposite edge or corner from `snapTo`. For example, `snapTo` of "T" (top) means `snapEdge` will default to "B" (bottom), so the returned coordinates would place `snapper` centered along the top edge of `target`. A `snapTo` of "TL" (top left) means `snapEdge` will default to "BR" (bottom right), so the returned coordinates would place the bottom right of `snapper` at the top left corner of `target`.

      `target` can be passed as either a Canvas or 4-element Array giving the top, left, width and height of the target.

      Parameters:
        `target` - canvas to snap to
        `snapTo` - edge against which to snap
        `snapper` - canvas being snapped
      Returns:
        the position for `snapper` to be placed in order to "snap to" an edge or corner of `target`

    - #### getSnapPosition

          public static Point getSnapPosition(Canvas target,
                                              java.lang.String snapTo,
                                              Canvas snapper,
                                              java.lang.String snapEdge)

      Return the position for `snapper` to be placed in order to "snap to" an edge or corner of `target`, in the same sense as `snapTo`.

      Default for `snapEdge` is the opposite edge or corner from `snapTo`. For example, `snapTo` of "T" (top) means `snapEdge` will default to "B" (bottom), so the returned coordinates would place `snapper` centered along the top edge of `target`. A `snapTo` of "TL" (top left) means `snapEdge` will default to "BR" (bottom right), so the returned coordinates would place the bottom right of `snapper` at the top left corner of `target`.

      `target` can be passed as either a Canvas or 4-element Array giving the top, left, width and height of the target.

      Parameters:
        `target` - canvas to snap to
        `snapTo` - edge against which to snap
        `snapper` - canvas being snapped
        `snapEdge` - optional edge to snapTo. Default is the opposite edge or corner from `snapTo`
      Returns:
        the position for `snapper` to be placed in order to "snap to" an edge or corner of `target`

    - #### setAllowExternalFilters

          public static void setAllowExternalFilters(boolean allExternalFilters)

      Changes the system-wide `allowExternalFilters` setting.
      Parameters:
        `allExternalFilters` - new setting

    - #### setDefaultPageSpace

          public static void setDefaultPageSpace(int newDefaultPageSpace)

      Changes the global `defaultPageSpace`.
      Parameters:
        `newDefaultPageSpace` - the new value for `defaultPageSpace`.

    - #### setNeverUseFilters

          public static void setNeverUseFilters(boolean neverUseFilters)

      Changes the system-wide `neverUseFilters` setting.
      Parameters:
        `neverUseFilters` - new setting

    - #### setDefaultProperties

          public static void setDefaultProperties(Canvas canvasProperties)

      Class level method to set the default properties of this class. If set, then all existing and subsequently created instances of this class will automatically have default properties corresponding to the properties set on the SmartGWT class instance passed to this function before its underlying SmartClient JS object was created. This is a powerful feature that eliminates the need for users to create a separate hierarchy of subclasses that only alter the default properties of this class. Can also be used for skinning / styling purposes.

      Note: This method is intended for setting default attributes only and will affect all instances of the underlying class (including those automatically generated in JavaScript). This method should not be used to apply standard EventHandlers or override methods for a class - use a custom subclass instead. Calling this method after instances have been created can result in undefined behavior, since it bypasses any setters and a class instance may have already examined a particular property and not be expecting any changes through this route.

      Parameters:
        `canvasProperties` - properties that should be used as new defaults when instances of this class are created
      See Also:
        `SGWTProperties`

    - #### getTestInstance

          protected Canvas getTestInstance()

    - #### getById

          public static Canvas getById(java.lang.String ID)

      Retrieve a Canvas by its global `ID`.
      Parameters:
        `ID` - global ID of the Canvas
      Returns:
        the Canvas, or null if not found

    - #### getByJSObject

          public static Canvas getByJSObject(com.google.gwt.core.client.JavaScriptObject jsObj)

      Retrieve a Canvas from its `JavaScriptObject`.
      Parameters:
        `jsObj` - SmartClient object associated with Canvas
      Returns:
        the Canvas, or null if not found

    - #### setElement

          protected void setElement(com.google.gwt.user.client.Element elem)

      Normal usage of SmartGWT is to call draw() on SmartGWT widgets, not to use use RootPanel.add(). Developers will not typically need to call getElement() or setElement() for SmartGWT canvas instances. If developers do need to access the DOM elements created by a drawn SmartGWT component, they should use `getOuterElement()` and `getContentElement()`. See the javadoc for those methods for more information. Note particularly that these elements should not be directly manipulated in the DOM - instead standard SmartGWT APIs such as draw(), clear(), setContents(), addChild(), redraw() should be used. See also `setHtmlElement(Element)` for how to embed a SmartGWT component into an existing DOM element.

      getElement() and setEleent() exist solely to support adding SmartGWT widgets to a core GWT layout manager. This usage has limitations and caveats - see this list of Frequently Asked Questions.

      The mechanism that getElement() uses to integrate with core GWT is the same as that described for `com.smartgwt.client.widgets.Canvas#setHTMLElement(Element)` and has the same caveats

      Overrides:
        `setElement` in class `com.google.gwt.user.client.ui.UIObject`

    - #### getElement

          public com.google.gwt.user.client.Element getElement()

      Normal usage of SmartGWT is to call draw() on SmartGWT widgets, not to use use RootPanel.add(). Developers will not typically need to call getElement() or setElement() for SmartGWT canvas instances. If developers do need to access the DOM elements created by a drawn SmartGWT component, they should use `getOuterElement()` and `getContentElement()`. See the javadoc for those methods for more information. Note particularly that these elements should not be directly manipulated in the DOM - instead standard SmartGWT APIs such as draw(), clear(), setContents(), addChild(), redraw() should be used. See also `setHtmlElement(Element)` for how to embed a SmartGWT component into an existing DOM element.

      getElement() and setEleent() exist solely to support adding SmartGWT widgets to a core GWT layout manager. This usage has limitations and caveats - see this list of Frequently Asked Questions.

      The mechanism that getElement() uses to integrate with core GWT is the same as that described for `com.smartgwt.client.widgets.Canvas#setHTMLElement(Element)` and has the same caveats

      Overrides:
        `getElement` in class `com.google.gwt.user.client.ui.UIObject`

    - #### getElement

          public com.google.gwt.user.client.Element getElement(boolean allowPreRender)

      Parameters:
        `allowPreRender` -
      Returns:
      See Also:
        `UIObject.getElement()`

    - #### asSGWTComponent

          public static <T extends Canvas> T asSGWTComponent(com.google.gwt.core.client.JavaScriptObject jsObj)

      Returns the existing SGWT widget, or creates and returns one if none exist, associated with the supplied `JavaScriptObject`. If the supplied object is not a SmartClient Canvas, a warning will be logged and null returned; otherwise the widget will be returned as the appropriate subtype of SGWT Canvas.
      Parameters:
        `jsObj` - SmartClient Canvas whose wrapper is wanted
      Returns:
        wrapping SGWT Canvas, appropriately subtyped, or null

    - #### getByLocalId

          public Canvas getByLocalId(java.lang.String ID)

      Retrieve a child of this Canvas by it's local ID.

      A "local ID" is name for a child widget which is unique only for this parent, and not globally unique as is required for `ID`. Widgets receive local IDs when loaded via `com.smartgwt.client.client.rpc.RPCManager#loadScreen()` or `com.smartgwt.client.rpc.RPCManager#cacheScreens()` and `com.smartgwt.client.rpc.RPCManager#createScreen()`.

      Parameters:
        `ID` - global ID of the Canvas
      Returns:
        the Canvas, or null if not found

    - #### getClassName

          public java.lang.String getClassName()

      Returns the javascript class name.
      Overrides:
        `getClassName` in class `BaseWidget`
      Returns:

    - #### setInitHandler

          public void setInitHandler(CanvasInitHandler initHandler)

      Specify a notification method to fire when this Canvas is initialized in JavaScript. This allows developers to set up form item state dynamically when the item is created.
      Parameters:
        `initHandler` -

    - #### onInit

          protected void onInit()

      Overrides:
        `onInit` in class `BaseWidget`

    - #### onDetach

          protected void onDetach()

      Overrides:
        `onDetach` in class `com.google.gwt.user.client.ui.Widget`

    - #### onAttach

          protected void onAttach()

      Overrides:
        `onAttach` in class `com.google.gwt.user.client.ui.Widget`

    - #### addStyleName

          public void addStyleName(java.lang.String style)

      Multiple styles are currently not supported. This method essentially calls `setStyleName(String)`
      Overrides:
        `addStyleName` in class `com.google.gwt.user.client.ui.UIObject`
      Parameters:
        `style` - the style name
      See Also:
        `setStyleName(String)`

    - #### setVisible

          public void setVisible(boolean visible)

      Specified by:
        `setVisible` in interface `com.google.gwt.user.client.ui.HasVisibility`
      Overrides:
        `setVisible` in class `com.google.gwt.user.client.ui.UIObject`

    - #### setHeight

          public void setHeight(int height)

      See Also:
        `setHeight(Integer)`

    - #### setHeight100

          public void setHeight100()

      Convenience method that sets the height to 100%.

    - #### getHeightAsString

          public java.lang.String getHeightAsString()

    - #### setTitle

          public void setTitle(java.lang.String title)

      Synonym for `setPrompt(String)`
      Overrides:
        `setTitle` in class `BaseWidget`
      Parameters:
        `title` - the title

    - #### getTitle

          public java.lang.String getTitle()

      Synonym for `getPrompt()`
      Overrides:
        `getTitle` in class `BaseWidget`
      Returns:
        the title

    - #### setTooltip

          public void setTooltip(java.lang.String tooltip)

      Synonym for `setPrompt(String)`
      Parameters:
        `tooltip` - the tooltip

    - #### getTooltip

          public java.lang.String getTooltip()

      Synonym for `getPrompt()`
      Returns:
        the tooltip

    - #### setWidth

          public void setWidth(int width)

      See Also:
        `setWidth(Integer)`

    - #### setWidth100

          public void setWidth100()

      Convenience method that sets the width to 100%.

    - #### getWidthAsString

          public java.lang.String getWidthAsString()

    - #### getLeftAsString

          public java.lang.String getLeftAsString()

      Number of pixels the left side of the widget is offset to the right from its default drawing context (either its parent's topleft corner, or the document flow, depending on the value of the `position` property).

      Can also be set as a percentage, specified as a String ending in '%', eg, "50%". In this case the top coordinate is considered as a percentage of the specified width of the `'parent'`.

      Returns:
        Return the left coordinate of this object, relative to its enclosing context, in pixels.

    - #### getFacetId

          public java.lang.String getFacetId()

      If a Canvas is dropped onto a `CubeGrid`, and it has a `facetId` property specified then the Cube treats this as adding that facetId at the drop location.
      Returns:
        the facet id

    - #### setFacetId

          public void setFacetId(java.lang.String facetId)

      If a Canvas is dropped onto a `CubeGrid`, and it has a facetId property specified then the Cube treats this as adding that facetId at the drop location.
      Parameters:
        `facetId` - the facet id

    - #### getTopAsString

          public java.lang.String getTopAsString()

      Number of pixels the top of the widget is offset down from its default drawing context (either its parent's top-left corner, or the document flow, depending on the value of the `position` property).

      Can also be set as a percentage, specified as a String ending in '%', eg, "50%". In this case the top coordinate is considered as a percentage of the specified height of the `'parent'`.

      Returns:
        Return the top coordinate of this object, relative to its enclosing context, in pixels.

    - #### setAlign

          public void setAlign(Alignment align)

    - #### getAbsoluteLeft

          public int getAbsoluteLeft()

      This method is similar to `getPageLeft()`.
      Overrides:
        `getAbsoluteLeft` in class `com.google.gwt.user.client.ui.UIObject`
      Returns:

    - #### getAbsoluteTop

          public int getAbsoluteTop()

      This method is similar to `getPageTop()`.
      Overrides:
        `getAbsoluteTop` in class `com.google.gwt.user.client.ui.UIObject`
      Returns:

    - #### setAnimateShowEffect

          public void setAnimateShowEffect(AnimationEffect animateShowEffect)

      Default animation effect to use if `Canvas#animateShow()` is called without an explicit effect parameter.
      Parameters:
        `animateShowEffect` - the animate show effect. Default is "wipe"

    - #### getAnimateShowEffect

          public AnimationEffect getAnimateShowEffect()

      Default animation effect to use if `Canvas#animateShow()` is called without an explicit effect parameter.
      Returns:
        animation effect. Default value is "wipe"

    - #### setDisabled

          public void setDisabled(boolean disabled)

      If set to true, the widget will be disabled. A widget is only considered enabled if it is individually enabled and all parents above it in the containment hierarchy are enabled. This allows you to enable or disable all components of a complex nested widget by enabling or disabling the top-level parent only. set the disabled state of this object

      Note : This is an advanced setting

      Parameters:
        `disabled` - new disabled state of this object - pass `true` to disable the widget. Default value is false

    - #### getDisabled

          public boolean getDisabled()

      If set to true, the widget will be disabled. A widget is only considered enabled if it is individually enabled and all parents above it in the containment hierarchy are enabled. This allows you to enable or disable all components of a complex nested widget by enabling or disabling the top-level parent only.
      Returns:
        Is this canvas disabled? Note that the disabled state is inherited - this method will return true if this widget, or any of its ancestors are marked disabled.

    - #### setDragTarget

          public void setDragTarget(Canvas dragTarget)

      A different widget that should be actually dragged when dragging initiates on this widget. One example of this is to have a child widget that drags its parent, as with a drag box. Because the parent automatically repositions its children, setting the drag target of the child to the parent and then dragging the child will result in both widgets being moved.
      Valid dragTarget values are:
      - `null` (default) [this widget is its own drag target]
      - Pointer to another widget, or widget ID
      - `"parent"` drag target is this widget's `parentCanvas`
      - `"top"` drag target is this widget's `topElement`

      Note : This is an advanced setting

      Parameters:
        `dragTarget` - dragTarget Default value is null

    - #### getDragTarget

          public Canvas getDragTarget()

      A different widget that should be actually dragged when dragging initiates on this widget. One example of this is to have a child widget that drags its parent, as with a drag box. Because the parent automatically repositions its children, setting the drag target of the child to the parent and then dragging the child will result in both widgets being moved.
      Valid dragTarget values are:
      - `null` (default) [this widget is its own drag target]
      - Pointer to another widget, or widget ID
      - `"parent"` drag target is this widget's `parentCanvas`
      - `"top"` drag target is this widget's `topElement`
      Returns:
        Canvas

    - #### willAcceptDrop

          public java.lang.Boolean willAcceptDrop()

      Returns true if the widget object being dragged can be dropped on this widget, and false or null otherwise. The default implementation of this method simply compares the `dragType` of the `dragTarget` (the component being dragged from) with the list of `dropTypes` on this Canvas. If the `dropTypes` list contains the `dragType` value, then this method returns true. Otherwise it returns false.

      No matter what you return, the `onDropOver` and `onDropMove` handlers will still be called, and their return value will control whether those events are bubbled to parent elements.

      However, what you return from `willAcceptDrop()` does determine whether the `onDrop` handler will be called.

      - If you return true, then `onDrop()` will be called, and its return value will determine whether the event is bubbled to parent elements.
      - If you return false, then `onDrop()` will not be called, and the event will not be bubbled.
      - If you return null, then `onDrop()` will not be called, but the event will be bubbled to parent elements (giving them a chance to handle the drop).

      So, you should return false to definitively deny a drop, and return null if it could make sense to allow a parent element (such as a `Layout`) to handle the drop.

      Note: This is an override point

      Returns:
        true if the widget object being dragged can be dropped on this widget, false if it cannot (and a drop event should not be bubbled), and null to permit a drop event to bubble to parent elements.

    - #### parentResized

          protected void parentResized()

      Fires when the interior size of the parent changes, including parent resize and scrollbar introduction or removal.

      This method allows a child to implement a layout policy that can be used within any parent, such as a Resizer component that always snaps to the parent's bottom-right corner. The default implementation of this method applies a child's percent sizes, if any, or implements layout based on the `snapTo` property.

      Make sure you call super.parentResized() if you'd like the default behavior to apply.
      Note: This is an override point

    - #### getHoverComponent

          public Canvas getHoverComponent()

      When `showHoverComponents` is true, this method is called to get the component to show as a hover for this Canvas. There is no default implementation of this method, so you need to override it with an implementation that returns a Canvas that suits your needs.

      By default, components returned by `getHoverComponent()` will not be automatically destroyed when the hover is hidden. To enforce this, set `hoverAutoDestroy` to true on the returned component.
      Note: this is an override point

      Returns:
        the component to show as a hover

    - #### setSmoothFade

          public void setSmoothFade(java.lang.Boolean smoothFade)
                             throws java.lang.IllegalStateException

      Throws:
        `java.lang.IllegalStateException`

    - #### setKeepInParentRect

          public void setKeepInParentRect(Rectangle rectangle)

    - #### setPrefix

          public void setPrefix(java.lang.String prefix)

    - #### getPrefix

          public java.lang.String getPrefix()

    - #### setResizeFrom

          public void setResizeFrom(java.lang.String... resizeFrom)

      Deprecated. use `#setResizeFrom(EdgeName)` instead.
      Allows resizing in certain edges or corners. The default value of null indicates that the widget is resizable from any corner or edge. To restrict resizing to only certain corners, set resizeFrom to an array of any of the values listed:
      T top edge
      B bottom edge
      L left edge
      R right edge
      TL top-left corner
      TR top-right corner
      BL bottom-left corner
      BR bottom-right corner
      E.g. setting this property to a value of ["R","TR","BR"] would restrict resizing to the right edge, top-right corner and bottom-right corner only
      Parameters:
        `resizeFrom` - resizeFrom values

    - #### resizeTo

          public java.lang.Boolean resizeTo(java.lang.String width,
                                            java.lang.String height)

      Resizes the widget to the specified width and height (moves the right and/ or bottom sides of the widget). The width and height parameters can be expressed as a percentage of viewport size or as the number of pixels.
      Parameters:
        `width` - new width for canvas
        `height` - new height for canvas
      Returns:
        whether the size actually changed

    - #### setProportionalResizeModifiers

          public void setProportionalResizeModifiers(java.lang.String... proportionalResizeModifiers)
                                              throws java.lang.IllegalStateException

      If `proportionalResizing` is set to `ProportionalResizeMode.MODIFIER` or `ProportionalResizeMode.MODIFIER_OFF` then proportional resizing of the DrawItem is activated or deactivated, respectively, whenever at least one key in this set of modifier keys is pressed.

      The keys allowed in this set are: "Alt", "Ctrl", and "Shift". If this set of keys is empty then proportional resizing is always used if `proportionalResizing` is `MODIFIER` and is never used if `proportionalResizing` is `MODIFIER_OFF`.

      Parameters:
        `proportionalResizeModifiers` - Default value is ["Shift"]
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the underlying component has been created

    - #### getProportionalResizeModifiers

          public java.lang.String[] getProportionalResizeModifiers()

      If `proportionalResizing` is set to `ProportionalResizeMode.MODIFIER` or `ProportionalResizeMode.MODIFIER_OFF` then proportional resizing of the DrawItem is activated or deactivated, respectively, whenever at least one key in this set of modifier keys is pressed.

      The keys allowed in this set are: "Alt", "Ctrl", and "Shift". If this set of keys is empty then proportional resizing is always used if `proportionalResizing` is `MODIFIER` and is never used if `proportionalResizing` is `MODIFIER_OFF`.

      Returns:
        String...

    - #### isVisible

          public boolean isVisible()

      Returns true if the widget is visible, taking all parents into account, so that a widget which is not hidden might still report itself as not visible if it is within a hidden parent.

      NOTE: Undrawn widgets will report themselves as visible if they would be visible if drawn.

      Specified by:
        `isVisible` in interface `com.google.gwt.user.client.ui.HasVisibility`
      Overrides:
        `isVisible` in class `com.google.gwt.user.client.ui.UIObject`
      Returns:
        true if the widget is visible, false otherwise

    - #### animateScroll

          public void animateScroll(int scrollLeft,
                                    int scrollTop,
                                    AnimationCallback callback)

      Animate a scroll from the current scroll position to the specified position.
      Parameters:
        `scrollLeft` - desired final left scroll postion
        `scrollTop` - desired final top scroll postion
        `callback` - When the scroll completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation

    - #### animateScroll

          public void animateScroll(int scrollLeft,
                                    int scrollTop,
                                    AnimationCallback callback,
                                    int duration)

      Animate a scroll from the current scroll position to the specified position.
      Parameters:
        `scrollLeft` - desired final left scroll postion
        `scrollTop` - desired final top scroll postion
        `callback` - When the scroll completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation
        `duration` - Duration in ms of the animated scroll

    - #### animateFade

          public void animateFade(int opacity)

      Animate a change in opacity from the widget's current opacity to the specified opacity.
      Parameters:
        `opacity` - desired final opacity

    - #### animateFade

          public void animateFade(int opacity,
                                  AnimationCallback callback)

      Animate a change in opacity from the widget's current opacity to the specified opacity.
      Parameters:
        `opacity` - desired final opacity
        `callback` - When the fade completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation

    - #### animateFade

          public void animateFade(int opacity,
                                  AnimationCallback callback,
                                  int duration)

      Animate a change in opacity from the widget's current opacity to the specified opacity.
      Parameters:
        `opacity` - desired final opacity
        `callback` - When the fade completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation
        `duration` - Duration in ms of the animated fade

    - #### animateFade

          public void animateFade(int opacity,
                                  AnimationCallback callback,
                                  int duration,
                                  AnimationAcceleration acceleration)

      Animate a change in opacity from the widget's current opacity to the specified opacity.
      Parameters:
        `opacity` - desired final opacity
        `callback` - When the fade completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation
        `duration` - Duration in ms of the animated fade
        `acceleration` - Animation acceleration to bias the ratios

    - #### animateHide

          public void animateHide(AnimationEffect effect)

      Hide a canvas by shrinking it vertically to zero height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - How should the content of the window be hidden during the hide? If ommitted, default behavior can be configured via `animateHideEffect`

    - #### animateHide

          public void animateHide(AnimationEffect effect,
                                  AnimationCallback callback)

      Hide a canvas by shrinking it vertically to zero height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - How should the content of the window be hidden during the hide? If ommitted, default behavior can be configured via `animateHideEffect`
        `callback` - When the hide completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation.

    - #### animateHide

          public void animateHide(AnimationEffect effect,
                                  AnimationCallback callback,
                                  int duration)

      Hide a canvas by shrinking it vertically to zero height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - How should the content of the window be hidden during the hide? If ommitted, default behavior can be configured via `animateHideEffect`
        `callback` - When the hide completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation.
        `duration` - Duration in ms of the animated hide. If unset, duration will be picked up from `animateHideTime`

    - #### animateShow

          public void animateShow(AnimationEffect effect)

      Show a canvas by growing it vertically to its fully drawn height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - Animation effect to use when revealing the widget. If ommitted, default behavior can be configured via `animateShowEffect`

    - #### animateShow

          public void animateShow(AnimateShowEffect effect)

      Show a canvas by growing it vertically to its fully drawn height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - AnimateShowEffect effect to use when revealing the widget. If ommitted, default behavior can be configured via `animateShowEffect`

    - #### animateShow

          public void animateShow(AnimationEffect effect,
                                  AnimationCallback callback)

      Show a canvas by growing it vertically to its fully drawn height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - Animation effect to use when revealing the widget. If ommitted, default behavior can be configured via `animateShowEffect`
        `callback` - When the show completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation.

    - #### animateShow

          public void animateShow(AnimateShowEffect effect,
                                  AnimationCallback callback)

      Show a canvas by growing it vertically to its fully drawn height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - AnimateShowEffect effect to use when revealing the widget. If ommitted, default behavior can be configured via `animateShowEffect`
        `callback` - When the show completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation.

    - #### animateShow

          public void animateShow(AnimationEffect effect,
                                  AnimationCallback callback,
                                  int duration)

      Show a canvas by growing it vertically to its fully drawn height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - Animation effect to use when revealing the widget. If ommitted, default behavior can be configured via `animateShowEffect`
        `callback` - When the show completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation.
        `duration` - Duration in ms of the animated show. If unset, duration will be picked up from `animateShowTime`

    - #### animateShow

          public void animateShow(AnimateShowEffect effect,
                                  AnimationCallback callback,
                                  int duration)

      Show a canvas by growing it vertically to its fully drawn height over a period of time. This method will not fire if the widget is already drawn and visible, or has overflow other than `"visible"` or `"hidden"`.
      Parameters:
        `effect` - AnimateShowEffect effect to use when revealing the widget. If ommitted, default behavior can be configured via `animateShowEffect`
        `callback` - When the show completes this callback will be fired. Single 'earlyFinish' parameter will be passed if the animation was cut short by a call to finishAnimation.
        `duration` - Duration in ms of the animated show. If unset, duration will be picked up from `animateShowTime`

    - #### updateShadow

          public void updateShadow()

      Update the canvas shadow.

    - #### getZIndex

          public int getZIndex()

      Get the z-Index of this canvas.
      Returns:
        the zIndex

    - #### getNextZIndex

          public int getNextZIndex()

      get the next zIndex for the next item to be drawn. see setZIndex() for notes
      Returns:
        the next zIndex

    - #### setZIndex

          public void setZIndex(int newIndex)

      Set the z-Index of the canvas.
      Parameters:
        `newIndex` - the new zIndex to set to

    - #### getPageRect

          public Rectangle getPageRect()

    - #### setRect

          public void setRect(Rectangle rectangle)

      Set all four coordinates, relative to the enclosing context, at once.

      Moves the widget so that its top-left corner is at the specified top-left coordinates, then resizes it to the specified width and height.

      Parameters:
        `rectangle` - new coordinates

    - #### setRect

          public void setRect(int left,
                              int top,
                              int width,
                              int height)

      Set all four coordinates, relative to the enclosing context, at once.

      Moves the widget so that its top-left corner is at the specified top-left coordinates, then resizes it to the specified width and height.

      Parameters:
        `left` - new left coordinate
        `top` - new top coordinate
        `width` - new width
        `height` - new height

    - #### getRect

          public Rectangle getRect()

      Get all four coordinates, relative to the enclosing context, at one.
      Returns:
        the Rectangle

    - #### getImgURL

          public static java.lang.String getImgURL(java.lang.String URL)

      Return the full URL for an image to be drawn in this canvas.

      If the passed URL begins with the special prefix "[SKIN]", it will have the widget.skinImgDir and Page.skinImgDir prepended. Otherwise the image is assumed to be application-specific, and will have the widget.appImgDir and Page.appImgDir automatically prepended.

      Note that if passed an absolute path (starting with "/" or "http://" for example), no extra image directory information will be prepended to the generated URL.//

      Parameters:
        `URL` - URL local to skin or application image directory
      Returns:
        URL to use

    - #### getImgURL

          public static java.lang.String getImgURL(java.lang.String URL,
                                                   java.lang.String imgDir)

      Return the full URL for an image to be drawn in this canvas.

      If the passed URL begins with the special prefix "[SKIN]", it will have the widget.skinImgDir and Page.skinImgDir prepended. Otherwise the image is assumed to be application-specific, and will have the widget.appImgDir and Page.appImgDir automatically prepended.

      Note that if passed an absolute path (starting with "/" or "http://" for example), no extra image directory information will be prepended to the generated URL.//

      Parameters:
        `URL` - URL local to skin or application image directory
        `imgDir` - optional image directory to override the default for this Canvas
      Returns:
        URL to use

    - #### imgHTML

          public static java.lang.String imgHTML(java.lang.String src)

      Generates the HTML for an image unique to this Canvas.

      The full URL for the image will be formed according to the rules documented for ``getImgURL(java.lang.String)``.

      The created image will have an identifier unique to this Canvas, and subsequent calls to ``getImage(java.lang.String)`` and ``setImage(java.lang.String, java.lang.String)`` with the name passed to this function will act on the image object produced by the HTML returned from this call.

      Parameters:
        `src` - URL local to the skin or application directory.
        NOTE: instead of passing several parameters, you can pass an object as the 'src' parameter with properties for all the various function parameters with, eg:
        canvas.imgHTML( {src:"foo", width:10, height:10} );
      Returns:
        HTML to draw the image.

    - #### imgHTML

          public static java.lang.String imgHTML(java.lang.String src,
                                                 int width,
                                                 int height,
                                                 java.lang.String name,
                                                 java.lang.String extraStuff,
                                                 java.lang.String imgDir)

      Generates the HTML for an image unique to this Canvas.

      The full URL for the image will be formed according to the rules documented for ``getImgURL(java.lang.String)``.

      The created image will have an identifier unique to this Canvas, and subsequent calls to ``getImage(java.lang.String)`` and ``setImage(java.lang.String, java.lang.String)`` with the name passed to this function will act on the image object produced by the HTML returned from this call.

      Parameters:
        `src` - URL local to the skin or application directory.
        NOTE: instead of passing several parameters, you can pass an object as the 'src' parameter with properties for all the various function parameters with, eg:
        canvas.imgHTML( {src:"foo", width:10, height:10} );
        `width` - width of the image
        `height` - height of the image
        `name` - name for the image
        `extraStuff` - additional attributes to write in the tag
        `imgDir` - image-specific image directory to override the default for this Canvas
      Returns:
        HTML to draw the image.

    - #### imgHTML

          public static java.lang.String imgHTML(java.lang.String src,
                                                 int width,
                                                 int height)

    - #### showPrintPreview

          public static void showPrintPreview(Canvas component)

      Show a PrintWindow containing a printable view of the component passed in containing print HTML.
      Parameters:
        `component` - to get printable HTML for.

    - #### showPrintPreview

          public static void showPrintPreview(java.lang.Object[] components)

      Show a Print containing a printable view of the components passed in.
      Parameters:
        `components` - components to get the print HTML for. May also include raw HTML strings which will be folded into the generated print output

    - #### showPrintPreview

          public static void showPrintPreview(java.lang.Object[] components,
                                              PrintProperties printProperties,
                                              java.lang.String title,
                                              PrintPreviewCallback callback)

      Show a Print containing a printable view of the components passed in.
      Parameters:
        `components` - components to get the print HTML for. May also include raw HTML strings which will be folded into the generated print output
        `printProperties` - for customizing the print HTML output. If this parameter is passed as null, it will be ignored.
        `title` - for the print window
        `callback` - to fire when the print preview window has been created and shown

    - #### showPrintPreview

          public static void showPrintPreview(java.lang.Object[] components,
                                              PrintProperties printProperties,
                                              java.lang.String title,
                                              PrintPreviewCallback callback,
                                              Window printWindowProperties,
                                              java.lang.String printButtonTitle)

      Show a Print containing a printable view of the components passed in.
      Parameters:
        `components` - components to get the print HTML for. May also include raw HTML strings which will be folded into the generated print output
        `printProperties` - for customizing the print HTML output. If this parameter is passed as null, it will be ignored.
        `title` - for the print window
        `callback` - to fire when the print preview window has been created and shown
        `printWindowProperties` - the print window properties
        `printButtonTitle` - the brint button title

    - #### getPrintHTML

          public static void getPrintHTML(java.lang.Object[] components,
                                          PrintProperties printProperties,
                                          PrintHTMLCallback callback)

      Returns print-formatted HTML for the specified list of components.
      Parameters:
        `components` - Components to get the print HTML for. Strings of raw HTML may also be included in this array, and will be integrated into the final HTML at the appropriate point. `HTML`.
        `printProperties` - for customizing the print HTML output. If this parameter is passed as null, it will be ignored.
        `callback` - to fire when the HTML has been generated
      See Also:
        `getPrintHTML(PrintProperties, PrintHTMLCallback)`

    - #### getPrintHTML

          public java.lang.String getPrintHTML(PrintProperties printProperties,
                                               PrintHTMLCallback callback)

      Retrieves printable HTML for this component and all printable subcomponents.

      By default any Canvas with children will simply collect the printable HTML of its children by calling getPrintHTML() on each child that is considered `printable`. If a callback is provided, then null is always returned and the callback is fired asynchronously.

      If overriding this method for a custom component, you should either return a String of printable HTML directly or return null and fire the provided callback using Class.fireCallback().

      To return an empty print representation, return an empty string ("") rather than null.

      The `printProperties` argument, if passed, must be passed to any subcomponents on which `getPrintHTML()` is called.

      Default implementation will set flag to `true` to indicate printing is in* progress, and clear this flag when the printing has completed (possibly via an asynchronous callback).

      NOTE: Expecting a direct return value from the default implementation is deprecated usage. This is because small changes to an application (such as adding a few more data points to a chart or adding another button) or using certain browsers can make it necessary to generate the HTML asynchronously. Thus, application code should not rely on the return value and always pass a callback.

      NOTE: CubeGrid does not support a WYSIWYG print view by default (also used when `exporting to pdf`). Instead we recommend `exporting to excel or csv format`.

      Parameters:
        `printProperties` - properties to configure printing behavior - may be null.
        `callback` - optional callback. This is required to handle cases where HTML generation is asynchronous - if a method generates HTML asynchronously, it should return null, and fire the specified callback on completion of HTML generation. The first parameter `HTML` should contain the generated print HTML. The callback is only called if null is returned. Furthermore, the default getPrintHTML() implementation always returns null and fires the callback when a callback is provided. See `Callback`.
      Returns:
        null if the print HTML is being generated asynchronously and/or a callback is provided; otherwise, the direct print HTML for this component (but note that returning direct print HTML is a deprecated feature).
      See Also:
        `Printing overview and related methods`

    - #### printComponents

          public static void printComponents(java.lang.Object[] components)

      Generate printable HTML for the designated components and trigger the native print dialog, without ever showing the printable HTML to the user.
      Parameters:
        `components` - components to get the print HTML for. May also include raw HTML strings which will be folded into the generated print output

    - #### setAutoChildConstructor

          public void setAutoChildConstructor(java.lang.String autoChildName,
                                              java.lang.String className)

      Sets the SmartClient constructor for the AutoChild named `autoChildName`.
      Parameters:
        `autoChildName` - the name of the AutoChild
        `className` - the SmartClient class name to use when constructing the AutoChild.
      See Also:
        `AutoChildUsage`

    - #### setAutoChildProperties

          public void setAutoChildProperties(java.lang.String autoChildName,
                                             Canvas properties)
                                      throws java.lang.IllegalStateException

      Sets the properties for creating a `Canvas` AutoChild named `autoChildName`.

      `properties` must not have already been created (`properties.isCreated()` must be `false`).

      NOTE: Overrides at override points are not applied to AutoChildren created from `properties`; that is, if the Java `Class` of `properties` overrides a Smart GWT override point, the custom method implementation will not be called.

      Throws:
        `java.lang.IllegalStateException` - if `properties` has been created.
      See Also:
        `AutoChildUsage`

    - #### setAutoChildProperties

          public void setAutoChildProperties(java.lang.String autoChildName,
                                             FormItem properties)
                                      throws java.lang.IllegalStateException

      Sets the properties for creating a `FormItem` AutoChild named `autoChildName`.

      `properties` must not have already been created (`properties.isCreated()` must be `false`).

      NOTE: Overrides at override points are not applied to AutoChildren created from `properties`; that is, if the Java `Class` of `properties` overrides a Smart GWT override point, the custom method implementation will not be called.

      Throws:
        `java.lang.IllegalStateException` - if `properties` has been created.
      See Also:
        `AutoChildUsage`

    - #### setAutoChildProperties

          public void setAutoChildProperties(java.lang.String autoChildName,
                                             EditProxy properties)
                                      throws java.lang.IllegalStateException

      Sets the properties for creating an AutoChild named `autoChildName`.

      `properties` must not have already been created (`properties.isCreated()` must be `false`).

      Throws:
        `java.lang.IllegalStateException` - if `properties` has been created.
      See Also:
        `AutoChildUsage`

    - #### setAutoChildProperties

          public void setAutoChildProperties(java.lang.String autoChildName,
                                             EditContext properties)
                                      throws java.lang.IllegalStateException

      Sets the properties for creating an AutoChild named `autoChildName`.

      `properties` must not have already been created (`properties.isCreated()` must be `false`).

      Throws:
        `java.lang.IllegalStateException` - if `properties` has been created.
      See Also:
        `AutoChildUsage`

    - #### setAutoChildVisibility

          public void setAutoChildVisibility(java.lang.String autoChildName,
                                             boolean visible)

      Sets whether to create and show the AutoChild named `autoChildName`.

      NOTE: This API is not valid for all AutoChildren because some AutoChildren cannot be hidden without destroying the main functions of the component.

      Parameters:
        `autoChildName` - name of an AutoChild
        `visible` - whether to show the AutoChild

    - #### getCanvasAutoChild

          public final Canvas getCanvasAutoChild(java.lang.String autoChildName)

      Returns the `Canvas` AutoChild named `autoChildName` if already created.
      Parameters:
        `autoChildName` - name of an AutoChild to return.
      Throws:
        `java.lang.RuntimeException` - if the AutoChild is not a SmartClient `Canvas` object.
      See Also:
        `AutoChildUsage`

    - #### getFormItemAutoChild

          public final FormItem getFormItemAutoChild(java.lang.String autoChildName)

      Returns the `FormItem` AutoChild named `autoChildName` if already created.
      Parameters:
        `autoChildName` - name of an AutoChild to return.
      Throws:
        `java.lang.RuntimeException` - if the AutoChild is not a SmartClient `FormItem` object.
      See Also:
        `AutoChildUsage`

    - #### addChild

          public void addChild(com.google.gwt.user.client.ui.Widget widget)

      Adds newChild as a child of this widget, set up a named object reference (i.e., this[name]) to the new widget if name argument is provided, and draw the child if this widget has been drawn already.

      If newChild has a parent it will be removed from it. If it has a master, it will be detached from it if the master is a child of a different parent. If newChild has peers, they'll be added to this widget as children as well.

      Parameters:
        `newChild` - new child canvas to add

    - #### addChild

          public Canvas addChild(Canvas newChild,
                                 java.lang.String name,
                                 boolean autoDraw)

      Adds newChild as a child of this widget, set up a named object reference (i.e., this[name]) to the new widget if name argument is provided, and draw the child if this widget has been drawn already.

      If newChild has a parent it will be removed from it. If it has a master, it will be detached from it if the master is a child of a different parent. If newChild has peers, they'll be added to this widget as children as well.

      Parameters:
        `newChild` - new child canvas to add
        `name` - name to assign to child (eg: this[name] == child)
        `autoDraw` - if false, child will not automatically be drawn (only for advanced use)
      Returns:
        the new child, or null if it couldn't be added
      See Also:
        `Containment overview and related methods`

    - #### setChildren

          public void setChildren(Canvas... children)

      Array of all Canvii that are immediate children of this Canvas.

      Note : This is an advanced setting

      Parameters:
        `children` - children Default value is null

    - #### getOffsetHeight

          public int getOffsetHeight()

      Overrides:
        `getOffsetHeight` in class `com.google.gwt.user.client.ui.UIObject`

    - #### getOffsetWidth

          public int getOffsetWidth()

      Overrides:
        `getOffsetWidth` in class `com.google.gwt.user.client.ui.UIObject`

    - #### setAutoHeight

          public void setAutoHeight()

      Set the minimum value for height.

      For use with setOverflow(Overflow.VISIBLE), where widgets render only as large as their contents and/or children, and height and width settings act as a minimum size.

    - #### setAutoWidth

          public void setAutoWidth()

      Set the minimum value for width.

      For use with setOverflow(Overflow.VISIBLE), where widgets render only as large as their contents and/or children, and height and width settings act as a minimum size.

    - #### showClickMask

          public java.lang.String showClickMask(Function clickActionCallback,
                                                ClickMaskMode mode,
                                                Canvas[] unmaskedTargets)

      Show a clickMask over the entire screen that intercepts mouse clicks and fires some action. The mask created will be associated with this canvas - calling this method multiple times will not show multiple (stacked) clickMasks if the mask associated with this canvas is already up.
      The clickMask useful for modal dialogs, menus and similar uses, where any click outside of some Canvas should either be suppressed (as in a modal dialog) or just cause something (like dismissing a menu).
      Parameters:
        `clickActionCallback` - action to fire when the user clicks on the mask
        `mode` - whether to automatically hide the clickMask on mouseDown and suppress the mouseDown event from reaching the target under the mouse
        `unmaskedTargets` - initially unmasked targets for this clickMask. Note that if this is a `"hard"` mask, unmasked children of masked parents are not supported so any non-top-level widgets passed in will have their parents unmasked. Children of masked parents can never be masked.
      Returns:
        clickMask ID

    - #### visibleAtPoint

          public java.lang.Boolean visibleAtPoint(int x,
                                                  int y,
                                                  boolean withinViewport,
                                                  Canvas ignoreWidgets,
                                                  Canvas upToParent)

      Does this widget contain the specified global (x,y) coordinates, and have no other widgets also at the specified position, obscuring this one? This is commonly used for (for example) drag and drop interactions.
      Parameters:
        `x` - GLOBAL x-coordinate
        `y` - GLOBAL y-coordinate
        `withinViewport` - point lies within our viewport rather than just our drawn area
        `ignoreWidgets` - If passed ignore widget(s), do not check whether those widgets occludes this one
        `upToParent` - If passed, only check for siblings occluding the component up as far as the specified parent widget
      Returns:
        true if this object contains the specified point; false otherwise
      See Also:
        `Positioning overview and related methods`

    - #### setAriaState

          public void setAriaState(java.lang.String stateName,
                                   java.lang.Object stateValue)
                            throws java.lang.IllegalStateException

      Set a specific ARIA state mapping for this component. Usually this does not need to be manually set. See `com.smartgwt.docs.Accessibility`.
      Parameters:
        `stateName` -
        `stateValue` -
      Throws:
        `java.lang.IllegalStateException` - ARIA state cannot be changed after the component has been created.

    - #### updateEditNode

          public void updateEditNode(EditContext editContext,
                                     EditNode editNode)

      A callback invoked for each `liveObject` by `EditContext` when the EditContext is being serialized. The liveObject may make any updates needed to the `EditNode` (or the `EditContext` as a whole) in order to be able to later recreate the objects.
      Note: This is an override point
      Parameters:
        `editContext` - the EditContext
        `editNode` - the EditNode
      See Also:
        `EditContext.serializeAllEditNodes()`, `EditContext.serializeEditNodes(com.smartgwt.client.tools.EditNode[])`

    - #### provideRuleContext

          public void provideRuleContext(java.lang.String dataPath,
                                         java.lang.Object data)

    - #### setLogicalStructure

          public com.smartgwt.logicalstructure.core.LogicalStructureObject setLogicalStructure(com.smartgwt.logicalstructure.widgets.CanvasLogicalStructure s)

      Setter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.

    - #### getLogicalStructure

          public com.smartgwt.logicalstructure.core.LogicalStructureObject getLogicalStructure()

      Getter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.
      Specified by:
        `getLogicalStructure` in interface `LogicalStructure`
      Overrides:
        `getLogicalStructure` in class `BaseWidget`