001 /* WindowListener.java -- listens for window events
002 Copyright (C) 1999, 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.
010
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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.
015
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017 along with GNU Classpath; see the file COPYING. If not, write to the
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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.event;
040
041 import java.awt.Frame;
042 import java.awt.Image;
043 import java.util.EventListener;
044
045 /**
046 * This interface is for classes that wish to monitor events for window
047 * changes. To watch a subset of these events, use a WindowAdapter.
048 *
049 * @author Aaron M. Renn (arenn@urbanophile.com)
050 * @see WindowAdapter
051 * @see WindowEvent
052 * @since 1.1
053 * @status updated to 1.4
054 */
055 public interface WindowListener extends EventListener
056 {
057 /**
058 * This method is called when the window is made visible.
059 *
060 * @param event the <code>WindowEvent</code> indicating the change
061 */
062 void windowOpened(WindowEvent event);
063
064 /**
065 * This method is called when the user calls the system menu close
066 * function, giving the program a chance to cancel the close.
067 *
068 * @param event the <code>WindowEvent</code> indicating the close attempt
069 */
070 void windowClosing(WindowEvent event);
071
072 /**
073 * This method is called when the window is closed.
074 *
075 * @param event the <code>WindowEvent</code> indicating the dispose
076 */
077 void windowClosed(WindowEvent event);
078
079 /**
080 * This method is called when the window is iconified.
081 *
082 * @param event the <code>WindowEvent</code> indicating the iconification
083 * @see Frame#setIconImage(Image)
084 */
085 void windowIconified(WindowEvent event);
086
087 /**
088 * This method is called when the window is deiconified.
089 *
090 * @param event the <code>WindowEvent</code> indicating the deiconification
091 */
092 void windowDeiconified(WindowEvent event);
093
094 /**
095 * This method is called when a window is activated. Only Frames and Dialogs
096 * can be active, and the active window always contains the component with
097 * focus.
098 *
099 * @param event the <code>WindowEvent</code> indicating the activation
100 */
101 void windowActivated(WindowEvent event);
102
103 /**
104 * This method is called when the window is deactivated.
105 *
106 * @param event the <code>WindowEvent</code> indicating the deactivation
107 */
108 void windowDeactivated(WindowEvent event);
109 } // interface WindowListener