001 /* DropTargetListener.java -- listen to events during the drop
002 Copyright (C) 2002, 2005 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
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012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
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019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
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033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package java.awt.dnd;
040
041 import java.util.EventListener;
042
043 /**
044 * @author Michael Koch (konqueror@gmx.de)
045 * @since 1.2
046 * @status updated to 1.4
047 */
048 public interface DropTargetListener extends EventListener
049 {
050 /**
051 * Called when the cursor hotspot enters a drop site which will accept the
052 * drag.
053 *
054 * @param e the drag source drag event
055 */
056 void dragEnter (DropTargetDragEvent e);
057
058 /**
059 * Called when the cursor hotspot moves inside of a drop site which will
060 * accept the drag.
061 *
062 * @param e the drag source drag event
063 */
064 void dragOver (DropTargetDragEvent e);
065
066 /**
067 * Called when the user modifies the drop gesture. This is often the case
068 * when additional mouse or key events are received during the drag.
069 *
070 * @param e the drag source drag event
071 */
072 void dropActionChanged (DropTargetDragEvent e);
073
074 /**
075 * Called when the cursor hotspot moves outside of a drop site which will
076 * accept the drag. This could also happen if the drop site is no longer
077 * active, or no longer accepts the drag.
078 *
079 * @param e the drag source drag event
080 */
081 void dragExit (DropTargetEvent e);
082
083 /**
084 * Called when the drag operation has terminated with a drop.
085 *
086 * @param e the drag source drag event
087 */
088 void drop (DropTargetDropEvent e);
089 } // interface DropTargetListener