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 sun.lwawt;
  27 
  28 import java.awt.Component;
  29 import java.awt.Window;
  30 import sun.awt.KeyboardFocusManagerPeerImpl;
  31 
  32 public class LWKeyboardFocusManagerPeer extends KeyboardFocusManagerPeerImpl {
  33     private static final LWKeyboardFocusManagerPeer inst = new LWKeyboardFocusManagerPeer();
  34 
  35     private Window focusedWindow;
  36     private Component focusOwner;
  37 
  38     public static LWKeyboardFocusManagerPeer getInstance() {
  39         return inst;
  40     }
  41 
  42     private LWKeyboardFocusManagerPeer() {
  43     }
  44 
  45     @Override
  46     public void setCurrentFocusedWindow(Window win) {
  47         synchronized (this) {
  48             focusedWindow = win;
  49         }
  50     }
  51 
  52     @Override
  53     public Window getCurrentFocusedWindow() {
  54         synchronized (this) {
  55             return focusedWindow;
  56         }
  57     }
  58 
  59     @Override
  60     public Component getCurrentFocusOwner() {
  61         synchronized (this) {
  62             return focusOwner;
  63         }
  64     }
  65 
  66     @Override
  67     public void setCurrentFocusOwner(Component comp) {
  68         synchronized (this) {
  69             focusOwner = comp;
  70         }
  71     }
  72 }