Module org.jpo

Package org.jpo.gui

Class JpoTransferableDropTargetListener

java.lang.Object

org.jpo.gui.JpoTransferableDropTargetListener

All Implemented Interfaces:

DropTargetListener, EventListener

public class JpoTransferableDropTargetListener
extends Object
implements DropTargetListener

A drop target listener for the transferable

Constructor Summary

Constructors

Constructor	Description
JpoTransferableDropTargetListener(JpoDropTargetDropEventHandler jpoDropTargetDropEventHandler)	Constructor

Method Summary

Modifier and Type	Method	Description
void	dragEnter(DropTargetDragEvent event)	this callback method is invoked every time something is dragged onto the ThumbnailController.
void	dragExit(DropTargetEvent event)	this callback method is invoked to tell the dropTarget that the drag has moved on to something else.
void	dragOver(DropTargetDragEvent event)	this callback method is invoked every time something is dragged over the ThumbnailController.
void	drop(DropTargetDropEvent event)	This method is called when the drop occurs.
void	dropActionChanged(DropTargetDragEvent event)	this callback method is invoked when the user presses or releases shift when doing a drag.

Methods inherited from class java.lang.Object

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

Constructor Details

JpoTransferableDropTargetListener

public JpoTransferableDropTargetListener(JpoDropTargetDropEventHandler jpoDropTargetDropEventHandler)

Constructor

Parameters:

jpoDropTargetDropEventHandler - Event handler

Method Details

dragEnter

public void dragEnter(DropTargetDragEvent event)

this callback method is invoked every time something is dragged onto the ThumbnailController. We check if the desired DataFlavor is supported and then reject the drag if it is not.

Specified by:

dragEnter in interface DropTargetListener

Parameters:

event - The event

dragOver

public void dragOver(DropTargetDragEvent event)

this callback method is invoked every time something is dragged over the ThumbnailController. We could do some highlighting if we so desired.

Specified by:

dragOver in interface DropTargetListener

Parameters:

event - The event

dropActionChanged

public void dropActionChanged(DropTargetDragEvent event)

this callback method is invoked when the user presses or releases shift when doing a drag. He can signal that he wants to change the copy / move of the operation. This method could intercept this change and could modify the event if it needs to. On Thumbnails this does nothing.

Specified by:

dropActionChanged in interface DropTargetListener

Parameters:

event - The event

dragExit

public void dragExit(DropTargetEvent event)

this callback method is invoked to tell the dropTarget that the drag has moved on to something else. We do nothing here.

Specified by:

dragExit in interface DropTargetListener

Parameters:

event - The event

drop

public void drop(DropTargetDropEvent event)

This method is called when the drop occurs. It gives the hard work to the SortableDefaultMutableTreeNode.

Specified by:

drop in interface DropTargetListener

Parameters:

event - The event