com.allen_sauer.gwt.dnd.client

Class DragHandlerAdapter

java.lang.Object

com.allen_sauer.gwt.dnd.client.DragHandlerAdapter

All Implemented Interfaces:

DragHandler, java.util.EventListener

public class DragHandlerAdapter
extends java.lang.Object
implements DragHandler

Convenience class for anonymous inner classes not wishing to define all methods required by the DragHandler interface.

Constructor Summary

Constructors

Constructor and Description
DragHandlerAdapter()

Method Summary

Methods

Modifier and Type	Method and Description
void	onDragEnd(DragEndEvent event) Fired when drag operation terminates.
void	onDragStart(DragStartEvent event) Fired when drag is initiated.
void	onPreviewDragEnd(DragEndEvent event) Fired before DragHandler.onDragEnd(DragEndEvent) is fired and provides an opportunity for any registered DragHandler to throw VetoDragException to prevent the operation.
void	onPreviewDragStart(DragStartEvent event) Fired before DragHandler.onDragStart(DragStartEvent) is fired and provides an opportunity for any registered DragHandler to throw VetoDragException to prevent the operation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DragHandlerAdapter

public DragHandlerAdapter()

Method Detail

onDragEnd

public void onDragEnd(DragEndEvent event)

Description copied from interface: DragHandler

Fired when drag operation terminates.

Specified by:

onDragEnd in interface DragHandler

Parameters:

event - an event object containing information about the drag operation

onDragStart

public void onDragStart(DragStartEvent event)

Description copied from interface: DragHandler

Fired when drag is initiated.

Specified by:

onDragStart in interface DragHandler

Parameters:

event - an event object containing information about the drag operation

onPreviewDragEnd

public void onPreviewDragEnd(DragEndEvent event)
                      throws VetoDragException

Description copied from interface: DragHandler

Fired before DragHandler.onDragEnd(DragEndEvent) is fired and provides an opportunity for any registered DragHandler to throw VetoDragException to prevent the operation.

Specified by:

onPreviewDragEnd in interface DragHandler

Parameters:

event - an event object containing information about the drag operation

Throws:

VetoDragException - when the drag operation is unacceptable

onPreviewDragStart

public void onPreviewDragStart(DragStartEvent event)
                        throws VetoDragException

Description copied from interface: DragHandler

Fired before DragHandler.onDragStart(DragStartEvent) is fired and provides an opportunity for any registered DragHandler to throw VetoDragException to prevent the operation.

Specified by:

onPreviewDragStart in interface DragHandler

Parameters:

event - an event object containing information about the drag operation

Throws:

VetoDragException - when the drag operation is unacceptable