001/* WindowAdapter.java -- convenience class for writing window listeners
002   Copyright (C) 1999, 2002, 2005  Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package 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 */
054public 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