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