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.*; 29 import java.util.*; 30 import java.util.List; 31 32 import javax.swing.RootPaneContainer; 33 34 import com.apple.eawt.AppEvent.FullScreenEvent; 35 import sun.awt.SunToolkit; 36 37 import java.lang.annotation.Native; 38 39 final class FullScreenHandler { 40 private static final String CLIENT_PROPERTY = "com.apple.eawt.event.internalFullScreenHandler"; 41 42 @Native static final int FULLSCREEN_WILL_ENTER = 1; 43 @Native static final int FULLSCREEN_DID_ENTER = 2; 44 @Native static final int FULLSCREEN_WILL_EXIT = 3; 45 @Native static final int FULLSCREEN_DID_EXIT = 4; 46 47 // installs a private instance of the handler, if necessary 48 static void addFullScreenListenerTo(final RootPaneContainer window, final FullScreenListener listener) { 49 final Object value = window.getRootPane().getClientProperty(CLIENT_PROPERTY); 50 if (value instanceof FullScreenHandler) { 51 ((FullScreenHandler)value).addListener(listener); 52 return; 53 } 54 55 if (value != null) return; // some other garbage is in our client property 56 57 final FullScreenHandler newHandler = new FullScreenHandler(); 58 newHandler.addListener(listener); 59 window.getRootPane().putClientProperty(CLIENT_PROPERTY, newHandler); 60 } 61 62 // asks the installed FullScreenHandler to remove it's listener (does not uninstall the FullScreenHandler) 63 static void removeFullScreenListenerFrom(final RootPaneContainer window, final FullScreenListener listener) { 64 final Object value = window.getRootPane().getClientProperty(CLIENT_PROPERTY); 65 if (!(value instanceof FullScreenHandler)) return; 66 ((FullScreenHandler)value).removeListener(listener); 67 } 68 69 static FullScreenHandler getHandlerFor(final RootPaneContainer window) { 70 final Object value = window.getRootPane().getClientProperty(CLIENT_PROPERTY); 71 if (value instanceof FullScreenHandler) return (FullScreenHandler)value; 72 return null; 73 } 74 75 // called from native 76 static void handleFullScreenEventFromNative(final Window window, final int type) { 77 if (!(window instanceof RootPaneContainer)) return; // handles null 78 79 SunToolkit.executeOnEventHandlerThread(window, new Runnable() { 80 public void run() { 81 final FullScreenHandler handler = getHandlerFor((RootPaneContainer)window); 82 if (handler != null) handler.notifyListener(new FullScreenEvent(window), type); 83 } 84 }); 85 } 86 87 88 final List<FullScreenListener> listeners = new LinkedList<FullScreenListener>(); 89 90 FullScreenHandler() { } 91 92 void addListener(final FullScreenListener listener) { 93 listeners.add(listener); 94 } 95 96 void removeListener(final FullScreenListener listener) { 97 listeners.remove(listener); 98 } 99 100 void notifyListener(final FullScreenEvent e, final int op) { 101 for (final FullScreenListener listener : listeners) { 102 switch (op) { 103 case FULLSCREEN_WILL_ENTER: 104 listener.windowEnteringFullScreen(e); 105 return; 106 case FULLSCREEN_DID_ENTER: 107 listener.windowEnteredFullScreen(e); 108 return; 109 case FULLSCREEN_WILL_EXIT: 110 listener.windowExitingFullScreen(e); 111 return; 112 case FULLSCREEN_DID_EXIT: 113 listener.windowExitedFullScreen(e); 114 return; 115 } 116 } 117 } 118 }