org.eclipse.swt.dnd
Interface DragSourceListener

All Superinterfaces:
EventListener, org.eclipse.swt.internal.SWTEventListener
All Known Implementing Classes:
DragSourceAdapter

public interface DragSourceListener
extends org.eclipse.swt.internal.SWTEventListener

Untamed: The DragSourceListener class provides event notification to the application for DragSource events.

When the user drops data on a DropTarget, the application which defines the DragSource must provide the dropped data by implementing dragSetData. In the dragSetData, the application must support all the data types that were specified in the DragSource#setTransfer method.

After the drop has completed successfully or has been aborted, the application which defines the DragSource is required to take the appropriate cleanup action. In the case of a successful move operation, the application must remove the data that was transferred.


Method Summary
 void dragFinished(DragSourceEvent event)
          Enabled: The drop has successfully completed(mouse up over a valid target) or has been terminated (such as hitting the ESC key).
 void dragSetData(DragSourceEvent event)
          Enabled: The data is required from the drag source.
 void dragStart(DragSourceEvent event)
          Enabled: The user has begun the actions required to drag the widget.
 

Method Detail

dragStart

public void dragStart(DragSourceEvent event)
Enabled: The user has begun the actions required to drag the widget. This event gives the application the chance to decide if a drag should be started.

The following fields in the DragSourceEvent apply:

Parameters:
event - the information associated with the drag start event
See Also:
DragSourceEvent

dragSetData

public void dragSetData(DragSourceEvent event)
Enabled: The data is required from the drag source.

The following fields in the DragSourceEvent apply:

Parameters:
event - the information associated with the drag set data event
See Also:
DragSourceEvent

dragFinished

public void dragFinished(DragSourceEvent event)
Enabled: The drop has successfully completed(mouse up over a valid target) or has been terminated (such as hitting the ESC key). Perform cleanup such as removing data from the source side on a successful move operation.

The following fields in the DragSourceEvent apply:

Parameters:
event - the information associated with the drag finished event
See Also:
DragSourceEvent


comments?