1 /* 2 * Copyright (c) 2011, 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.*; 29 import java.util.*; 30 import java.util.List; 31 32 import javax.swing.RootPaneContainer; 33 34 import com.apple.eawt.AppEvent.FullScreenEvent; 35 36 import javax.tools.annotation.GenerateNativeHeader; 37 38 /* No native methods here, but the constants are needed in the supporting JNI code */ 39 @GenerateNativeHeader 40 final class FullScreenHandler { 41 private static final String CLIENT_PROPERTY = "com.apple.eawt.event.internalFullScreenHandler"; 42 43 static final int FULLSCREEN_WILL_ENTER = 1; 44 static final int FULLSCREEN_DID_ENTER = 2; 45 static final int FULLSCREEN_WILL_EXIT = 3; 46 static final int FULLSCREEN_DID_EXIT = 4; 47 48 // installs a private instance of the handler, if necessary 49 static void addFullScreenListenerTo(final RootPaneContainer window, final FullScreenListener listener) { 50 final Object value = window.getRootPane().getClientProperty(CLIENT_PROPERTY); 51 if (value instanceof FullScreenHandler) { 52 ((FullScreenHandler)value).addListener(listener); 53 return; 54 } 55 56 if (value != null) return; // some other garbage is in our client property 57 58 final FullScreenHandler newHandler = new FullScreenHandler(); 59 newHandler.addListener(listener); 60 window.getRootPane().putClientProperty(CLIENT_PROPERTY, newHandler); 61 } 62 63 // asks the installed FullScreenHandler to remove it's listener (does not uninstall the FullScreenHandler) 64 static void removeFullScreenListenerFrom(final RootPaneContainer window, final FullScreenListener listener) { 65 final Object value = window.getRootPane().getClientProperty(CLIENT_PROPERTY); 66 if (!(value instanceof FullScreenHandler)) return; 67 ((FullScreenHandler)value).removeListener(listener); 68 } 69 70 static FullScreenHandler getHandlerFor(final RootPaneContainer window) { 71 final Object value = window.getRootPane().getClientProperty(CLIENT_PROPERTY); 72 if (value instanceof FullScreenHandler) return (FullScreenHandler)value; 73 return null; 74 } 75 76 // called from native 77 static void handleFullScreenEventFromNative(final Window window, final int type) { 78 if (!(window instanceof RootPaneContainer)) return; // handles null 79 80 EventQueue.invokeLater(new Runnable() { 81 public void run() { 82 final FullScreenHandler handler = getHandlerFor((RootPaneContainer)window); 83 if (handler != null) handler.notifyListener(new FullScreenEvent(window), type); 84 } 85 }); 86 } 87 88 89 final List<FullScreenListener> listeners = new LinkedList<FullScreenListener>(); 90 91 FullScreenHandler() { } 92 93 void addListener(final FullScreenListener listener) { 94 listeners.add(listener); 95 } 96 97 void removeListener(final FullScreenListener listener) { 98 listeners.remove(listener); 99 } 100 101 void notifyListener(final FullScreenEvent e, final int op) { 102 for (final FullScreenListener listener : listeners) { 103 switch (op) { 104 case FULLSCREEN_WILL_ENTER: 105 listener.windowEnteringFullScreen(e); 106 return; 107 case FULLSCREEN_DID_ENTER: 108 listener.windowEnteredFullScreen(e); 109 return; 110 case FULLSCREEN_WILL_EXIT: 111 listener.windowExitingFullScreen(e); 112 return; 113 case FULLSCREEN_DID_EXIT: 114 listener.windowExitedFullScreen(e); 115 return; 116 } 117 } 118 } 119 }