public class SetWidgetDropController extends SimpleDropController
Constructor and Description |
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SetWidgetDropController(com.google.gwt.user.client.ui.SimplePanel dropTarget) |
Modifier and Type | Method and Description |
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void |
onDrop(DragContext context)
Called when the draggable widget or its proxy is dropped on our drop target.
|
void |
onPreviewDrop(DragContext context)
Called just prior to
DropController.onDrop(DragContext) to allow the drop operation to be cancelled
by throwing a VetoDragException . |
getDropTarget, onEnter, onLeave, onMove
public SetWidgetDropController(com.google.gwt.user.client.ui.SimplePanel dropTarget)
public void onDrop(DragContext context)
DropController
onDrop
in interface DropController
onDrop
in class AbstractDropController
context
- the current drag contextDropController.onPreviewDrop(DragContext)
public void onPreviewDrop(DragContext context) throws VetoDragException
DropController
DropController.onDrop(DragContext)
to allow the drop operation to be cancelled
by throwing a VetoDragException
.onPreviewDrop
in interface DropController
onPreviewDrop
in class AbstractDropController
context
- the current drag contextVetoDragException
- if the proposed operation is unacceptable