com.smartgwt.client.widgets

## Class PrintCanvas

- 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
        - - com.smartgwt.client.widgets.PrintCanvas

- 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, HasRuleContextChangedHandlers, HasScrolledHandlers, HasShowContextMenuHandlers, HasVisibilityChangedHandlers

      public class PrintCanvas
      extends Canvas

  PrintCanvas is a subclass of canvas which renders printable content HTML and provides APIs for printing this content as a separate document.
  See Also:
    `Printing overview and related methods`

- - ### 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
    `PrintCanvas()`
    `PrintCanvas(com.google.gwt.core.client.JavaScriptObject jsObj)`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `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`.
    `protected com.google.gwt.core.client.JavaScriptObject` | `create()`
    `java.lang.String` | `getExternalStylesheet()` Setting this property will cause the specified stylesheet to be loaded in this print canvas's frame.
    `com.smartgwt.logicalstructure.core.LogicalStructureObject` | `getLogicalStructure()` Getter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.
    `static PrintCanvas` | `getOrCreateRef(com.google.gwt.core.client.JavaScriptObject jsObj)`
    `java.lang.String` | `getPrintFrameURL()` Location of the special printFrame html file provided as part of the Smart GWT libraries.
    `void` | `print()` Show the native print dialog and allow the user to print the current HTML for this printCanvas.
    `static void` | `setDefaultProperties(PrintCanvas printCanvasProperties)` Class level method to set the default properties of this class.
    `void` | `setExternalStylesheet(java.lang.String externalStylesheet)` Setting this property will cause the specified stylesheet to be loaded in this print canvas's frame.
    `void` | `setHTML(java.lang.String HTML, PrintCanvasCallback callback)` Update the HTML content displayed in this print canvas.
    `com.smartgwt.logicalstructure.core.LogicalStructureObject` | `setLogicalStructure(com.smartgwt.logicalstructure.widgets.PrintCanvasLogicalStructure s)` Setter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.
    `void` | `setPrintFrameURL(java.lang.String printFrameURL)` Location of the special printFrame html file provided as part of the Smart GWT libraries.

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

      `addChild, addChild, addChild, addChild, addChild, addClickHandler, addDoubleClickHandler, addDragMoveHandler, addDragRepositionMoveHandler, addDragRepositionStartHandler, addDragRepositionStopHandler, addDragResizeMoveHandler, addDragResizeStartHandler, addDragResizeStopHandler, addDragStartHandler, addDragStopHandler, addDropHandler, addDropMoveHandler, addDropOutHandler, addDropOverHandler, addFocusChangedHandler, addHoverHandler, addHoverHiddenHandler, addKeyDownHandler, addKeyPressHandler, addMouseDownHandler, addMouseMoveHandler, addMouseOutHandler, addMouseOverHandler, addMouseStillDownHandler, addMouseUpHandler, addMouseWheelHandler, addMovedHandler, addParentMovedHandler, addPeer, addPeer, addPeer, addPeer, addResizedHandler, addRightMouseDownHandler, addRuleContextChangedHandler, addScrolledHandler, addShowContextMenuHandler, addSnapAlignCandidate, addStyleName, addVisibilityChangedHandler, adjustForContent, animateFade, animateFade, animateFade, animateFade, animateFade, animateFade, animateFade, animateFade, animateHide, animateHide, animateHide, animateMove, animateMove, animateMove, animateMove, animateRect, animateRect, animateRect, animateRect, animateResize, animateResize, animateResize, animateResize, animateScroll, animateScroll, animateScroll, animateScroll, animateScroll, animateScroll, animateShow, animateShow, animateShow, animateShow, animateShow, animateShow, asSGWTComponent, blur, bringToFront, clear, clickMaskUp, clickMaskUp, contains, contains, containsEvent, containsFocus, containsPoint, containsPoint, deparent, depeer, disable, enable, encloses, focus, focusInNextTabElement, focusInPreviousTabElement, getAbsoluteLeft, getAbsoluteTop, getAccessKey, getAdaptiveHeightPriority, getAdaptiveWidthPriority, getAlwaysShowScrollbars, getAnimateAcceleration, getAnimateFadeTime, getAnimateHideAcceleration, getAnimateHideTime, getAnimateMoveAcceleration, getAnimateMoveTime, getAnimateRectAcceleration, getAnimateRectTime, getAnimateResizeAcceleration, getAnimateResizeTime, getAnimateScrollAcceleration, getAnimateScrollTime, getAnimateShowAcceleration, getAnimateShowEffect, getAnimateShowTime, getAnimateTime, getAppImgDir, getAriaRole, getAutoDraw, getAutoMaskComponents, getAutoParent, getAutoShowParent, getBackgroundColor, getBackgroundImage, getBackgroundPosition, getBackgroundRepeat, getBorder, getBottom, getByLocalId, getCanAcceptDrop, getCanAdaptHeight, getCanAdaptWidth, getCanDrag, getCanDragReposition, getCanDragResize, getCanDragScroll, getCanDrop, getCanDropBefore, getCanFocus, getCanHover, getCanSelectText, getCanvasAutoChild, getCanvasItem, getChildren, getChildrenResizeSnapAlign, getChildrenSnapAlign, getChildrenSnapCenterAlign, getChildrenSnapEdgeAlign, getChildrenSnapResizeToGrid, getChildrenSnapToGrid, getClassName, getComponentMask, getComponentMaskDefaults, getContentElement, getContents, getContextMenu, getCursor, getDataPath, getDefaultHeight, getDefaultWidth, getDestroyed, getDestroying, getDisabled, getDisabledCursor, getDisableTouchScrollingForDrag, getDoubleClickDelay, getDragAppearance, getDragIntersectStyle, getDragMaskType, getDragMaxHeight, getDragMaxWidth, getDragMinHeight, getDragMinWidth, getDragOpacity, getDragRepositionAppearance, getDragRepositionCursor, getDragResizeAppearance, getDragScrollDelay, getDragStartDistance, getDragTarget, getDragType, getDropTypes, getDropTypesAsString, getDynamicContents, getEdgeBackgroundColor, getEdgeCenterBackgroundColor, getEdgeImage, getEdgeMarginSize, getEdgeOffset, getEdgeOpacity, getEdgeShowCenter, getEdgeSize, getEditNode, getEditProxy, getEditProxyConstructor, getElement, getElement, getEnableWhen, getEventEdge, getEventEdge, getExtraSpace, getFacetId, getFormItemAutoChild, getFullDataPath, getGroupBorderCSS, getGroupLabelBackgroundColor, getGroupLabelStyleName, getGroupTitle, getHeight, getHeightAsString, getHideUsingDisplayNone, getHoverAlign, getHoverAutoDestroy, getHoverComponent, getHoverDelay, getHoverHeight, getHoverHTML, getHoverMoveWithMouse, getHoverOpacity, getHoverStyle, getHoverVAlign, getHoverWidth, getHoverWrap, getHSnapOrigin, getHSnapOrigin, getHSnapPosition, getHSnapPosition, getHtmlElement, getHtmlPosition, getImage, getImgURL, getImgURL, getInnerContentHeight, getInnerContentWidth, getInnerHeight, getInnerWidth, getIsGroup, getIsPrinting, getIsRuleScope, getIsSnapAlignCandidate, getKeepInParentRect, getLayoutAlign, getLeavePageSpace, getLeft, getLeftAsString, getLocalId, getLocateChildrenBy, getLocateChildrenType, getLocatePeersBy, getLocatePeersType, getMargin, getMasterCanvas, getMasterElement, getMatchElement, getMaxHeight, getMaxWidth, getMenuConstructor, getMinHeight, getMinNonEdgeSize, getMinWidth, getMomentumScrollMinSpeed, getMouseStillDownDelay, getMouseStillDownInitialDelay, getNextZIndex, getNoDoubleClicks, getNoDropCursor, getOffsetHeight, getOffsetWidth, getOffsetX, getOffsetY, getOpacity, getOuterElement, getOverflow, getPadding, getPageBottom, getPageLeft, getPageRect, getPageRight, getPageTop, getPanelContainer, getParentCanvas, getParentElement, getPeers, getPercentBox, getPercentSource, getPosition, getPrefix, getPrintChildrenAbsolutelyPositioned, getPrintHTML, getPrintHTML, getPrompt, getProportionalResizeModifiers, getProportionalResizing, getRect, getRedrawOnResize, getResizeBarTarget, getResizeFrom, getRight, getRuleContext, getRuleContext, getRuleScope, getScrollbarSize, getScrollBottom, getScrollHeight, getScrollLeft, getScrollRight, getScrollTop, getScrollWidth, getShadowDepth, getShadowImage, getShadowOffset, getShadowSoftness, getShouldPrint, getShowCustomScrollbars, getShowDragShadow, getShowEdges, getShowHover, getShowHoverComponents, getShowResizeBar, getShowShadow, getShowSnapGrid, getShrinkElementOnHide, getSkinImgDir, getSnapAlignCandidates, getSnapAlignCenterLineStyle, getSnapAlignEdgeLineStyle, getSnapAxis, getSnapEdge, getSnapHDirection, getSnapHGap, getSnapOffsetLeft, getSnapOffsetTop, getSnapOnDrop, getSnapPosition, getSnapPosition, getSnapResizeToAlign, getSnapResizeToGrid, getSnapTo, getSnapToAlign, getSnapToCenterAlign, getSnapToEdgeAlign, getSnapToGrid, getSnapVDirection, getSnapVGap, getStyleName, getTabIndex, getTestInstance, getTitle, getTooltip, getTop, getTopAsString, getTopElement, getUseBackMask, getUseDragMask, getUseNativeDrag, getUseOpacityFilter, getUseTouchScrolling, getValuesManager, getViewportHeight, getViewportWidth, getVisibility, getVisibleHeight, getVisibleWhen, getVisibleWidth, getVSnapOrigin, getVSnapOrigin, getVSnapPosition, getVSnapPosition, getWidth, getWidthAsString, getZIndex, getZIndex, handleHover, hide, hideClickMask, hideClickMask, hideComponentMask, hideComponentMask, hideContextMenu, imgHTML, imgHTML, imgHTML, intersects, isDirty, isDisabled, isDrawn, isFocused, isVisible, keyUp, layoutChildren, linkHTML, linkHTML, linkHTML, linkHTML, linkHTML, linkHTML, markForDestroy, markForRedraw, markForRedraw, moveAbove, moveBelow, moveBy, moveTo, onAttach, onDetach, onInit, pageScrollDown, pageScrollUp, parentResized, placeNear, placeNear, placeNear, printComponents, provideRuleContext, provideRuleContext, redraw, redraw, removeChild, removeChild, removePeer, removePeer, removeSnapAlignCandidate, resizeBy, resizeControls, resizeFonts, resizeFonts, resizeTo, resizeTo, revealChild, revealChild, scrollBy, scrollByPercent, scrollTo, scrollTo, scrollTo, scrollToBottom, scrollToLeft, scrollToPercent, scrollToRight, scrollToTop, sendToBack, setAccessKey, setAdaptHeightByCustomizer, setAdaptiveHeightPriority, setAdaptiveWidthPriority, setAdaptWidthByCustomizer, setAlign, setAllowExternalFilters, setAlwaysShowScrollbars, setAnimateAcceleration, setAnimateFadeTime, setAnimateHideAcceleration, setAnimateHideTime, setAnimateMoveAcceleration, setAnimateMoveTime, setAnimateRectAcceleration, setAnimateRectTime, setAnimateResizeAcceleration, setAnimateResizeTime, setAnimateScrollAcceleration, setAnimateScrollTime, setAnimateShowAcceleration, setAnimateShowEffect, setAnimateShowTime, setAnimateTime, setAppImgDir, setAriaRole, setAriaState, setAutoChildConstructor, setAutoChildProperties, setAutoChildProperties, setAutoChildProperties, setAutoChildProperties, setAutoChildVisibility, setAutoDraw, setAutoHeight, setAutoMaskComponents, setAutoParent, setAutoShowParent, setAutoWidth, setBackgroundColor, setBackgroundImage, setBackgroundPosition, setBackgroundRepeat, setBorder, setBottom, setCanAcceptDrop, setCanAdaptHeight, setCanAdaptWidth, setCanDrag, setCanDragReposition, setCanDragResize, setCanDragScroll, setCanDrop, setCanDropBefore, setCanFocus, setCanHover, setCanSelectText, setChildren, setChildrenResizeSnapAlign, setChildrenSnapAlign, setChildrenSnapCenterAlign, setChildrenSnapEdgeAlign, setChildrenSnapResizeToGrid, setChildrenSnapToGrid, setComponentMaskDefaults, setContents, setContextMenu, setCursor, setDataPath, setDefaultHeight, setDefaultPageSpace, setDefaultProperties, setDefaultWidth, setDisabled, setDisabledCursor, setDisableTouchScrollingForDrag, setDoubleClickDelay, setDragAppearance, setDragIntersectStyle, setDragMaskType, setDragMaxHeight, setDragMaxWidth, setDragMinHeight, setDragMinWidth, setDragOpacity, setDragRepositionAppearance, setDragRepositionCursor, setDragResizeAppearance, setDragScrollDelay, setDragStartDistance, setDragTarget, setDragType, setDropTypes, setDropTypes, setDynamicContents, setEdgeBackgroundColor, setEdgeCenterBackgroundColor, setEdgeImage, setEdgeMarginSize, setEdgeOffset, setEdgeOpacity, setEdgeShowCenter, setEdgeSize, setEditMode, setEditMode, setEditMode, setEditProxyConstructor, setElement, setEnableWhen, setExtraSpace, setFacetId, setGroupBorderCSS, setGroupLabelBackgroundColor, setGroupLabelStyleName, setGroupTitle, setHeight, setHeight, setHeight, setHeight100, setHideUsingDisplayNone, setHoverAlign, setHoverAutoDestroy, setHoverDelay, setHoverHeight, setHoverMoveWithMouse, setHoverOpacity, setHoverStyle, setHoverVAlign, setHoverWidth, setHoverWrap, setHtmlElement, setHtmlPosition, setImage, setImage, setInitHandler, setIsGroup, setIsRuleScope, setIsSnapAlignCandidate, setKeepInParentRect, setKeepInParentRect, setKeepInParentRect, setLayoutAlign, setLayoutAlign, setLeavePageSpace, setLeft, setLeft, setLocateChildrenBy, setLocateChildrenType, setLocatePeersBy, setLocatePeersType, setLogicalStructure, setMargin, setMatchElement, setMaxHeight, setMaxWidth, setMenuConstructor, setMinHeight, setMinNonEdgeSize, setMinWidth, setMomentumScrollMinSpeed, setMouseStillDownDelay, setMouseStillDownInitialDelay, setNeverUseFilters, setNoDoubleClicks, setNoDropCursor, setOpacity, setOverflow, setPadding, setPageLeft, setPageTop, setParentCanvas, setParentElement, setPeers, setPercentBox, setPercentSource, setPosition, setPrefix, setPrintChildrenAbsolutelyPositioned, setPrompt, setProportionalResizeModifiers, setProportionalResizing, setRect, setRect, setRedrawOnResize, setResizeBarTarget, setResizeFrom, setResizeFrom, setRight, setRuleScope, setScrollbarConstructor, setScrollbarSize, setShadowDepth, setShadowImage, setShadowOffset, setShadowSoftness, setShouldPrint, setShowCustomScrollbars, setShowDragShadow, setShowEdges, setShowHover, setShowHoverComponents, setShowResizeBar, setShowShadow, setShowSnapGrid, setShrinkElementOnHide, setSkinImgDir, setSmoothFade, setSnapAlignCandidates, setSnapAlignCenterLineStyle, setSnapAlignEdgeLineStyle, setSnapAxis, setSnapEdge, setSnapHDirection, setSnapHGap, setSnapOffsetLeft, setSnapOffsetTop, setSnapOnDrop, setSnapResizeToAlign, setSnapResizeToGrid, setSnapTo, setSnapToAlign, setSnapToCenterAlign, setSnapToEdgeAlign, setSnapToGrid, setSnapVDirection, setSnapVGap, setStyleName, setTabIndex, setTitle, setTooltip, setTop, setTop, setUseBackMask, setUseDragMask, setUseNativeDrag, setUseOpacityFilter, setUseTouchScrolling, setValuesManager, setVisibility, setVisible, setVisibleWhen, setWidth, setWidth, setWidth, setWidth100, setZIndex, shouldDragScroll, show, showClickMask, showComponentMask, showComponentMask, showNextTo, showNextTo, showNextTo, showNextTo, showPrintPreview, showPrintPreview, showPrintPreview, showPrintPreview, showRecursively, updateEditNode, updateHover, updateHover, updateShadow, visibleAtPoint, willAcceptDrop`

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

      `addDrawHandler, applyFactoryProperties, completeCreation, destroy, doAddHandler, doInit, doOnRender, draw, equals, error, errorIfNotCreated, getAttribute, getAttributeAsBoolean, getAttributeAsDate, getAttributeAsDateArray, getAttributeAsDouble, getAttributeAsElement, getAttributeAsFloat, getAttributeAsFloatArray, getAttributeAsInt, getAttributeAsIntArray, getAttributeAsJavaScriptObject, getAttributeAsMap, getAttributeAsRecord, getAttributeAsString, getAttributeAsStringArray, getById, getByJSObject, 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, setDefaultProperties, setDragTracker, setFactoryCreated, setID, setJavaScriptObject, setLogicalStructure, 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

    - #### PrintCanvas

          public PrintCanvas()

    - #### PrintCanvas

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

  - ### Method Detail

    - #### getOrCreateRef

          public static PrintCanvas 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 `Canvas`

    - #### setExternalStylesheet

          public void setExternalStylesheet(java.lang.String externalStylesheet)

      Setting this property will cause the specified stylesheet to be loaded in this print canvas's frame. The stylesheet should be specified as a URL to load.

      Note : This is an advanced setting

      Parameters:
        `externalStylesheet` - Default value is null

    - #### getExternalStylesheet

          public java.lang.String getExternalStylesheet()

      Setting this property will cause the specified stylesheet to be loaded in this print canvas's frame. The stylesheet should be specified as a URL to load.
      Returns:
        String

    - #### setPrintFrameURL

          public void setPrintFrameURL(java.lang.String printFrameURL)
                                throws java.lang.IllegalStateException

      Location of the special printFrame html file provided as part of the Smart GWT libraries. This file must be present at the specified location for the printCanvas printing APIs.

      Note : This is an advanced setting

      Parameters:
        `printFrameURL` - Default value is "[HELPERS]printFrame.html"
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getPrintFrameURL

          public java.lang.String getPrintFrameURL()

      Location of the special printFrame html file provided as part of the Smart GWT libraries. This file must be present at the specified location for the printCanvas printing APIs.
      Returns:
        String

    - #### print

          public void print()

      Show the native print dialog and allow the user to print the current HTML for this printCanvas. Note that the PrintCanvas must be drawn to be printed.

    - #### setHTML

          public void setHTML(java.lang.String HTML,
                              PrintCanvasCallback callback)

      Update the HTML content displayed in this print canvas. If the printCanvas is not yet drawn the HTML will be displayed when the canvas is drawn.

      Note that if the printCanvas is `redrawn`, or `cleared` and then `drawn` again, the HTML will be redisplayed inside the print canvas, and the specified callback will be fired again.

      Parameters:
        `HTML` - HTML to show in this print canvas
        `callback` - callback function to fire when the HTML is displayed. The callback will be passed a pointer to this print canvas as the first parameter with the name `printPreview`. If this canvas is not drawn when this method is called, the callback will not be fired until the canvas is drawn and the HTML rendered out into the page.

    - #### setDefaultProperties

          public static void setDefaultProperties(PrintCanvas printCanvasProperties)

      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:
        `printCanvasProperties` - properties that should be used as new defaults when instances of this class are created
      See Also:
        `SGWTProperties`

    - #### setLogicalStructure

          public com.smartgwt.logicalstructure.core.LogicalStructureObject setLogicalStructure(com.smartgwt.logicalstructure.widgets.PrintCanvasLogicalStructure 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 `Canvas`