com.smartgwt.client.widgets.grid.events

## Interface HasGroupStateChangedHandlers

- All Superinterfaces:
    com.google.gwt.event.shared.HasHandlers
  All Known Implementing Classes:
    CubeGrid, DateGrid, ListGrid, Menu, TableView, TreeGrid

      public interface HasGroupStateChangedHandlers
      extends com.google.gwt.event.shared.HasHandlers

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `com.google.gwt.event.shared.HandlerRegistration` | `addGroupStateChangedHandler(GroupStateChangedHandler handler)` Notification method executed whenever the groupState of this grid changes.

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

      `fireEvent`

- - ### Method Detail

    - #### addGroupStateChangedHandler

          com.google.gwt.event.shared.HandlerRegistration addGroupStateChangedHandler(GroupStateChangedHandler handler)

      Notification method executed whenever the groupState of this grid changes. Group state is accessible via `ListGrid.getGroupState`, and contains group state information.
      Parameters:
        `handler` - the groupStateChanged handler
      Returns:
        `HandlerRegistration` used to remove this handler