001/* JApplet.java -- 002 Copyright (C) 2002, 2004, 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 javax.swing; 040 041import java.applet.Applet; 042import java.awt.BorderLayout; 043import java.awt.Component; 044import java.awt.Container; 045import java.awt.Dimension; 046import java.awt.Graphics; 047import java.awt.LayoutManager; 048import java.awt.event.KeyEvent; 049 050import javax.accessibility.Accessible; 051import javax.accessibility.AccessibleContext; 052 053/** 054 * A top-level container that is usually used in web browsers. 055 * 056 * @author original author unknown 057 */ 058public class JApplet extends Applet 059 implements RootPaneContainer, Accessible 060{ 061 /** 062 * Provides accessibility support for <code>JApplet</code>. 063 */ 064 protected class AccessibleJApplet extends Applet.AccessibleApplet 065 { 066 /** 067 * Creates a new instance of <code>AccessibleJApplet</code>. 068 */ 069 protected AccessibleJApplet() 070 { 071 super(); 072 // Nothing to do here. 073 } 074 } 075 076 /** 077 * The accessible context for this <code>JApplet</code>. 078 */ 079 protected AccessibleContext accessibleContext; 080 081 private static final long serialVersionUID = 7269359214497372587L; 082 083 protected JRootPane rootPane; 084 085 /** 086 * @specnote rootPaneCheckingEnabled is false to comply with J2SE 5.0 087 */ 088 protected boolean rootPaneCheckingEnabled = false; 089 090 public JApplet() 091 { 092 super.setLayout(new BorderLayout(1, 1)); 093 getRootPane(); // Will do set/create. 094 setRootPaneCheckingEnabled(true); // Init stage is now over. 095 } 096 097 public Dimension getPreferredSize() 098 { 099 return super.getPreferredSize(); 100 } 101 102 public void setLayout(LayoutManager manager) 103 { 104 // Check if we're in initialization stage. If so, call super.setLayout 105 // otherwise, valid calls go to the content pane 106 if (isRootPaneCheckingEnabled()) 107 getContentPane().setLayout(manager); 108 else 109 super.setLayout(manager); 110 } 111 112 public void setLayeredPane(JLayeredPane layeredPane) 113 { 114 getRootPane().setLayeredPane(layeredPane); 115 } 116 117 public JLayeredPane getLayeredPane() 118 { 119 return getRootPane().getLayeredPane(); 120 } 121 122 public JRootPane getRootPane() 123 { 124 if (rootPane == null) 125 setRootPane(createRootPane()); 126 return rootPane; 127 } 128 129 protected void setRootPane(JRootPane root) 130 { 131 if (rootPane != null) 132 remove(rootPane); 133 134 rootPane = root; 135 add(rootPane, BorderLayout.CENTER); 136 } 137 138 protected JRootPane createRootPane() 139 { 140 return new JRootPane(); 141 } 142 143 public Container getContentPane() 144 { 145 return getRootPane().getContentPane(); 146 } 147 148 public void setContentPane(Container contentPane) 149 { 150 getRootPane().setContentPane(contentPane); 151 } 152 153 public Component getGlassPane() 154 { 155 return getRootPane().getGlassPane(); 156 } 157 158 public void setGlassPane(Component glassPane) 159 { 160 getRootPane().setGlassPane(glassPane); 161 } 162 163 protected void addImpl(Component comp, Object constraints, int index) 164 { 165 // If we're adding in the initialization stage use super.add. 166 // Otherwise pass the add onto the content pane. 167 if (isRootPaneCheckingEnabled()) 168 getContentPane().add(comp, constraints, index); 169 else 170 super.addImpl(comp, constraints, index); 171 } 172 173 public AccessibleContext getAccessibleContext() 174 { 175 if (accessibleContext == null) 176 accessibleContext = new AccessibleJApplet(); 177 return accessibleContext; 178 } 179 180 public JMenuBar getJMenuBar() 181 { 182 return getRootPane().getJMenuBar(); 183 } 184 185 public void setJMenuBar(JMenuBar menubar) 186 { 187 getRootPane().setJMenuBar(menubar); 188 } 189 190 protected String paramString() 191 { 192 return super.paramString(); 193 } 194 195 protected void processKeyEvent(KeyEvent e) 196 { 197 super.processKeyEvent(e); 198 } 199 200 public void remove(Component comp) 201 { 202 // If we're removing the root pane, use super.remove. Otherwise 203 // pass it on to the content pane instead 204 if (comp == rootPane) 205 super.remove(rootPane); 206 else 207 getContentPane().remove(comp); 208 } 209 210 protected boolean isRootPaneCheckingEnabled() 211 { 212 return rootPaneCheckingEnabled; 213 } 214 215 protected void setRootPaneCheckingEnabled(boolean enabled) 216 { 217 rootPaneCheckingEnabled = enabled; 218 } 219 220 public void update(Graphics g) 221 { 222 paint(g); 223 } 224}