Top Description Methods
java.awt.dnd

public Interface DragSourceListener

extends EventListener
Known Direct Implementers
javax.swing.TransferHandler.DragHandler, java.awt.dnd.DnDEventMulticaster, java.awt.dnd.DragSourceAdapter, java.awt.dnd.DragSourceContext
Imports
java.util.EventListener
The DragSourceListener defines the event interface for originators of Drag and Drop operations to track the state of the user's gesture, and to provide appropriate "drag over" feedback to the user throughout the Drag and Drop operation.

The drop site is associated with the previous dragEnter() invocation if the latest invocation of dragEnter() on this listener:

Since
1.2

Method Summary

Modifier and TypeMethod and Description
public void
dragDropEnd(DragSourceDropEvent
the DragSourceDropEvent
dsde)

This method is invoked to signify that the Drag and Drop operation is complete.

public void
dragEnter(DragSourceDragEvent
the DragSourceDragEvent
dsde)

Called as the cursor's hotspot enters a platform-dependent drop site.

public void
dragExit(DragSourceEvent
the DragSourceEvent
dse)

Called as the cursor's hotspot exits a platform-dependent drop site.

public void
dragOver(DragSourceDragEvent
the DragSourceDragEvent
dsde)

Called as the cursor's hotspot moves over a platform-dependent drop site.

public void
dropActionChanged(DragSourceDragEvent
the DragSourceDragEvent
dsde)

Called when the user has modified the drop gesture.

Method Detail

dragDropEndback to summary
public void dragDropEnd(DragSourceDropEvent dsde)

This method is invoked to signify that the Drag and Drop operation is complete. The getDropSuccess() method of the DragSourceDropEvent can be used to determine the termination state. The getDropAction() method returns the operation that the drop site selected to apply to the Drop operation. Once this method is complete, the current DragSourceContext and associated resources become invalid.

Parameters
dsde:DragSourceDropEvent

the DragSourceDropEvent

dragEnterback to summary
public void dragEnter(DragSourceDragEvent dsde)

Called as the cursor's hotspot enters a platform-dependent drop site. This method is invoked when all the following conditions are true:

  • The cursor's hotspot enters the operable part of a platform- dependent drop site.
  • The drop site is active.
  • The drop site accepts the drag.
Parameters
dsde:DragSourceDragEvent

the DragSourceDragEvent

dragExitback to summary
public void dragExit(DragSourceEvent dse)

Called as the cursor's hotspot exits a platform-dependent drop site. This method is invoked when any of the following conditions are true:

  • The cursor's hotspot no longer intersects the operable part of the drop site associated with the previous dragEnter() invocation.
OR
  • The drop site associated with the previous dragEnter() invocation is no longer active.
OR
  • The drop site associated with the previous dragEnter() invocation has rejected the drag.
Parameters
dse:DragSourceEvent

the DragSourceEvent

dragOverback to summary
public void dragOver(DragSourceDragEvent dsde)

Called as the cursor's hotspot moves over a platform-dependent drop site. This method is invoked when all the following conditions are true:

  • The cursor's hotspot has moved, but still intersects the operable part of the drop site associated with the previous dragEnter() invocation.
  • The drop site is still active.
  • The drop site accepts the drag.
Parameters
dsde:DragSourceDragEvent

the DragSourceDragEvent

dropActionChangedback to summary
public void dropActionChanged(DragSourceDragEvent dsde)

Called when the user has modified the drop gesture. This method is invoked when the state of the input device(s) that the user is interacting with changes. Such devices are typically the mouse buttons or keyboard modifiers that the user is interacting with.

Parameters
dsde:DragSourceDragEvent

the DragSourceDragEvent