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