org.archiviststoolkit.swing.jTreeDnD
Class TreeDropTarget

java.lang.Object
  java.awt.dnd.DropTarget
      org.archiviststoolkit.swing.jTreeDnD.TreeDropTarget

All Implemented Interfaces:

java.awt.dnd.DropTargetListener, java.io.Serializable, java.util.EventListener

public class TreeDropTarget
extends java.awt.dnd.DropTarget

A drop target for class JTree that implements autoscrolling, automatic tree node expansion and a custom drag image during the drag part of a drag and drop operation.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.dnd.DropTarget

java.awt.dnd.DropTarget.DropTargetAutoScroller

Constructor Summary

TreeDropTarget(NodeMoveTransferHandler h)
constructor

Method Summary

void	dragExit(java.awt.dnd.DropTargetDragEvent dtde) clear the drawings on exit
void	dragOver(java.awt.dnd.DropTargetDragEvent dtde) use method dragOver to constantly update the drag mark and darg image as well as to support automatic scrolling durng a drag operation
void	drop(java.awt.dnd.DropTargetDropEvent dtde) clear the drawings on drop
java.awt.Point	getMostRecentDragLocation() get the most recent mouse location, i.e.
protected void	startTimer()
void	updateDragMark(javax.swing.JTree tree, java.awt.Point location) manage display of a drag mark either highlighting a node or drawing an insertion mark

Methods inherited from class java.awt.dnd.DropTarget

addDropTargetListener, addNotify, clearAutoscroll, createDropTargetAutoScroller, createDropTargetContext, dragEnter, dragExit, dropActionChanged, getComponent, getDefaultActions, getDropTargetContext, getFlavorMap, initializeAutoscrolling, isActive, removeDropTargetListener, removeNotify, setActive, setComponent, setDefaultActions, setFlavorMap, updateAutoscroll

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeDropTarget

public TreeDropTarget(NodeMoveTransferHandler h)

constructor

Parameters:

h - the transfer handler that provides the drag image for the currently dragged node

Method Detail

dragOver

public void dragOver(java.awt.dnd.DropTargetDragEvent dtde)

use method dragOver to constantly update the drag mark and darg image as well as to support automatic scrolling durng a drag operation

Specified by:

dragOver in interface java.awt.dnd.DropTargetListener

Overrides:

dragOver in class java.awt.dnd.DropTarget

dragExit

public void dragExit(java.awt.dnd.DropTargetDragEvent dtde)

clear the drawings on exit

drop

public void drop(java.awt.dnd.DropTargetDropEvent dtde)

clear the drawings on drop

Specified by:

drop in interface java.awt.dnd.DropTargetListener

Overrides:

drop in class java.awt.dnd.DropTarget

updateDragMark

public void updateDragMark(javax.swing.JTree tree,
                           java.awt.Point location)

manage display of a drag mark either highlighting a node or drawing an insertion mark

getMostRecentDragLocation

public java.awt.Point getMostRecentDragLocation()

get the most recent mouse location, i.e. the drop location when called upon drop

Returns:

the mouse location recorded most recently during a drag operation

startTimer

protected void startTimer()