1 /* 2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.apple.eawt; 27 28 import java.awt.Toolkit; 29 import java.io.File; 30 import java.util.*; 31 32 import com.apple.eawt.AppEvent.*; 33 34 @SuppressWarnings("deprecation") 35 class _AppEventLegacyHandler implements AboutHandler, PreferencesHandler, _OpenAppHandler, AppReOpenedListener, OpenFilesHandler, PrintFilesHandler, QuitHandler { 36 final _AppEventHandler parent; 37 final Vector<ApplicationListener> legacyAppListeners = new Vector<ApplicationListener>(); 38 boolean blockLegacyAPI; 39 boolean initializedParentDispatchers; 40 41 _AppEventLegacyHandler(final _AppEventHandler parent) { 42 this.parent = parent; 43 } 44 45 void blockLegacyAPI() { 46 blockLegacyAPI = true; 47 } 48 49 void checkIfLegacyAPIBlocked() { 50 if (!blockLegacyAPI) return; 51 throw new IllegalStateException("Cannot add com.apple.eawt.ApplicationListener after installing an app event handler"); 52 } 53 54 void addLegacyAppListener(final ApplicationListener listener) { 55 checkIfLegacyAPIBlocked(); 56 57 if (!initializedParentDispatchers) { 58 final _AppMenuBarHandler menuBarHandler = Application.getApplication().menuBarHandler; 59 final boolean prefsMenuAlreadyExplicitlySet = menuBarHandler.prefsMenuItemExplicitlySet; 60 61 parent.aboutDispatcher.setHandler(this); 62 parent.preferencesDispatcher.setHandler(this); 63 if (!prefsMenuAlreadyExplicitlySet) { 64 menuBarHandler.setPreferencesMenuItemVisible(false); // default behavior is not to have a preferences item 65 } 66 parent.openAppDispatcher.setHandler(this); 67 parent.reOpenAppDispatcher.addListener(this); 68 parent.openFilesDispatcher.setHandler(this); 69 parent.printFilesDispatcher.setHandler(this); 70 parent.quitDispatcher.setHandler(this); 71 72 initializedParentDispatchers = true; 73 } 74 75 synchronized (legacyAppListeners) { 76 legacyAppListeners.addElement(listener); 77 } 78 } 79 80 public void removeLegacyAppListener(final ApplicationListener listener) { 81 checkIfLegacyAPIBlocked(); 82 83 synchronized (legacyAppListeners) { 84 legacyAppListeners.removeElement(listener); 85 } 86 } 87 88 @Override 89 public void handleAbout(final AboutEvent e) { 90 final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit()); 91 sendEventToEachListenerUntilHandled(ae, new EventDispatcher() { 92 public void dispatchEvent(final ApplicationListener listener) { 93 listener.handleAbout(ae); 94 } 95 }); 96 97 if (ae.isHandled()) return; 98 parent.openCocoaAboutWindow(); 99 } 100 101 @Override 102 public void handlePreferences(final PreferencesEvent e) { 103 final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit()); 104 sendEventToEachListenerUntilHandled(ae, new EventDispatcher() { 105 public void dispatchEvent(final ApplicationListener listener) { 106 listener.handlePreferences(ae); 107 } 108 }); 109 } 110 111 @Override 112 public void handleOpenApp() { 113 final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit()); 114 sendEventToEachListenerUntilHandled(ae, new EventDispatcher() { 115 public void dispatchEvent(final ApplicationListener listener) { 116 listener.handleOpenApplication(ae); 117 } 118 }); 119 } 120 121 @Override 122 public void appReOpened(final AppReOpenedEvent e) { 123 final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit()); 124 sendEventToEachListenerUntilHandled(ae, new EventDispatcher() { 125 public void dispatchEvent(final ApplicationListener listener) { 126 listener.handleReOpenApplication(ae); 127 } 128 }); 129 } 130 131 @Override 132 public void openFiles(final OpenFilesEvent e) { 133 final List<File> files = e.getFiles(); 134 for (final File file : files) { // legacy ApplicationListeners only understood one file at a time 135 final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit(), file.getAbsolutePath()); 136 sendEventToEachListenerUntilHandled(ae, new EventDispatcher() { 137 public void dispatchEvent(final ApplicationListener listener) { 138 listener.handleOpenFile(ae); 139 } 140 }); 141 } 142 } 143 144 @Override 145 public void printFiles(PrintFilesEvent e) { 146 final List<File> files = e.getFiles(); 147 for (final File file : files) { // legacy ApplicationListeners only understood one file at a time 148 final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit(), file.getAbsolutePath()); 149 sendEventToEachListenerUntilHandled(ae, new EventDispatcher() { 150 public void dispatchEvent(final ApplicationListener listener) { 151 listener.handlePrintFile(ae); 152 } 153 }); 154 } 155 } 156 157 @Override 158 public void handleQuitRequestWith(final QuitEvent e, final QuitResponse response) { 159 final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit()); 160 sendEventToEachListenerUntilHandled(ae, new EventDispatcher() { 161 public void dispatchEvent(final ApplicationListener listener) { 162 listener.handleQuit(ae); 163 } 164 }); 165 166 if (ae.isHandled()) { 167 parent.performQuit(); 168 } else { 169 parent.cancelQuit(); 170 } 171 } 172 173 interface EventDispatcher { 174 void dispatchEvent(final ApplicationListener listener); 175 } 176 177 // helper that cycles through the loop and aborts if the event is handled, or there are no listeners 178 void sendEventToEachListenerUntilHandled(final ApplicationEvent event, final EventDispatcher dispatcher) { 179 synchronized (legacyAppListeners) { 180 if (legacyAppListeners.size() == 0) return; 181 182 final Enumeration<ApplicationListener> e = legacyAppListeners.elements(); 183 while (e.hasMoreElements() && !event.isHandled()) { 184 dispatcher.dispatchEvent(e.nextElement()); 185 } 186 } 187 } 188 }