001 /* WindowAdapter.java -- convenience class for writing window listeners
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
011 GNU Classpath is distributed in the hope that it will be useful, but
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
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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
032 module. An independent module is a module which is not derived from
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 /**
042 * This class implements <code>WindowListener</code>,
043 * <code>WindowStateListener</code>, and <code>WindowFocusListener</code>, and
044 * implements all methods with empty bodies. This allows a listener
045 * interested in listening to only a subset of any <code>WindowEvent</code>
046 * actions to extend this class and override only the desired methods.
047 *
048 * @author Aaron M. Renn (arenn@urbanophile.com)
049 * @see ComponentEvent
050 * @see ComponentListener
051 * @since 1.1
052 * @status updated to 1.4
053 */
054 public abstract class WindowAdapter
055 implements WindowListener, WindowStateListener, WindowFocusListener
056 {
057 /**
058 * Do nothing default constructor for subclasses.
059 */
060 public WindowAdapter()
061 {
062 }
063
064 /**
065 * Implements this method from the interface with an empty method body.
066 *
067 * @param event the event, ignored in this implementation
068 */
069 public void windowOpened(WindowEvent event)
070 {
071 }
072
073 /**
074 * Implements this method from the interface with an empty method body.
075 *
076 * @param event the event, ignored in this implementation
077 */
078 public void windowClosing(WindowEvent event)
079 {
080 }
081
082 /**
083 * Implements this method from the interface with an empty method body.
084 *
085 * @param event the event, ignored in this implementation
086 */
087 public void windowClosed(WindowEvent event)
088 {
089 }
090
091 /**
092 * Implements this method from the interface with an empty method body.
093 *
094 * @param event the event, ignored in this implementation
095 */
096 public void windowIconified(WindowEvent event)
097 {
098 }
099
100 /**
101 * Implements this method from the interface with an empty method body.
102 *
103 * @param event the event, ignored in this implementation
104 */
105 public void windowDeiconified(WindowEvent event)
106 {
107 }
108
109 /**
110 * Implements this method from the interface with an empty method body.
111 *
112 * @param event the event, ignored in this implementation
113 */
114 public void windowActivated(WindowEvent event)
115 {
116 }
117
118 /**
119 * Implements this method from the interface with an empty method body.
120 *
121 * @param event the event, ignored in this implementation
122 */
123 public void windowDeactivated(WindowEvent event)
124 {
125 }
126
127 /**
128 * Implements this method from the interface with an empty method body.
129 *
130 * @param event the event, ignored in this implementation
131 * @since 1.4
132 */
133 public void windowStateChanged(WindowEvent event)
134 {
135 }
136
137 /**
138 * Implements this method from the interface with an empty method body.
139 *
140 * @param event the event, ignored in this implementation
141 * @since 1.4
142 */
143 public void windowGainedFocus(WindowEvent event)
144 {
145 }
146
147 /**
148 * Implements this method from the interface with an empty method body.
149 *
150 * @param event the event, ignored in this implementation
151 * @since 1.4
152 */
153 public void windowLostFocus(WindowEvent event)
154 {
155 }
156 } // class WindowAdapter