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