1 /* 2 * Copyright (c) 2003, 2008, 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 package sun.awt.X11; 26 27 import java.awt.Component; 28 import java.awt.Window; 29 import sun.util.logging.PlatformLogger; 30 import sun.awt.CausedFocusEvent; 31 import sun.awt.KeyboardFocusManagerPeerImpl; 32 33 public class XKeyboardFocusManagerPeer extends KeyboardFocusManagerPeerImpl { 34 private static final PlatformLogger focusLog = PlatformLogger.getLogger("sun.awt.X11.focus.XKeyboardFocusManagerPeer"); 35 private static final XKeyboardFocusManagerPeer inst = new XKeyboardFocusManagerPeer(); 36 37 private Component currentFocusOwner; 38 private Window currentFocusedWindow; 39 40 public static XKeyboardFocusManagerPeer getInstance() { 41 return inst; 42 } 43 44 private XKeyboardFocusManagerPeer() { 45 } 46 47 @Override 48 public void setCurrentFocusOwner(Component comp) { 49 synchronized (this) { 50 currentFocusOwner = comp; 51 } 52 } 53 54 @Override 55 public Component getCurrentFocusOwner() { 56 synchronized(this) { 57 return currentFocusOwner; 58 } 59 } 60 61 @Override 62 public void setCurrentFocusedWindow(Window win) { 63 if (focusLog.isLoggable(PlatformLogger.Level.FINER)) { 64 focusLog.finer("Setting current focused window " + win); 65 } 66 67 XWindowPeer from = null, to = null; 68 69 synchronized(this) { 70 if (currentFocusedWindow != null) { 71 from = (XWindowPeer)currentFocusedWindow.getPeer(); 72 } 73 74 currentFocusedWindow = win; 75 76 if (currentFocusedWindow != null) { 77 to = (XWindowPeer)currentFocusedWindow.getPeer(); 78 } 79 } 80 81 if (from != null) { 82 from.updateSecurityWarningVisibility(); 83 } 84 if (to != null) { 85 to.updateSecurityWarningVisibility(); 86 } 87 } 88 89 @Override 90 public Window getCurrentFocusedWindow() { 91 synchronized(this) { 92 return currentFocusedWindow; 93 } 94 } 95 96 // TODO: do something to eliminate this forwarding 97 public static boolean deliverFocus(Component lightweightChild, 98 Component target, 99 boolean temporary, 100 boolean focusedWindowChangeAllowed, 101 long time, 102 CausedFocusEvent.Cause cause) 103 { 104 return KeyboardFocusManagerPeerImpl.deliverFocus(lightweightChild, 105 target, 106 temporary, 107 focusedWindowChangeAllowed, 108 time, 109 cause, 110 getInstance().getCurrentFocusOwner()); 111 } 112 }