001/* WindowListener.java -- listens for window events
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
041import java.awt.Frame;
042import java.awt.Image;
043import 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 */
055public 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