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 javafx.embed.swing;
  27 
  28 import java.awt.KeyboardFocusManager;
  29 import java.lang.reflect.Field;
  30 
  31 import javax.swing.RepaintManager;
  32 
  33 /**
  34  * Helper class for {@link SwingView}. The purpose of this class is to
  35  * initialize the special {@link RepaintManager} needed to hook Swing components
  36  * into JavaFX views.<br /><br />
  37  * 
  38  * The {@link #init()} method must be called before initaliazing the graphics
  39  * state of the application, typically within the main method before calling
  40  * one of the {@link Application#launch(Class, String...))} methods. 
  41  */
  42 public class SwingFX {
  43 
  44     private static boolean initialized;
  45     
  46     /**
  47      * Initializes and install the {@link RepaintManager} needed by
  48      * {@link SwingView}.
  49      */
  50     public static void init() {
  51         System.setProperty("swing.volatileImageBufferEnabled", "false");
  52         
  53         // workaround for Mac OS X JDK that cast Graphics to SunGraphics2D
  54         // internally, not painting our components
  55         // this workaround should not be needed from JDK 7 onward
  56         String enableNativeBuffering = "true";
  57         if (System.getProperty("os.name").contains("Mac")) {            
  58             enableNativeBuffering = "false";
  59         }
  60         System.setProperty("awt.nativeDoubleBuffering", enableNativeBuffering);
  61         
  62         new JFXPanel(); // needed as a trick to launch it on a Mac
  63         
  64         Class<KeyboardFocusManager> kfmCls = KeyboardFocusManager.class;
  65         Field peer;
  66         try {
  67             peer = kfmCls.getDeclaredField("peer");
  68             peer.setAccessible(true);
  69             peer.set(KeyboardFocusManager.getCurrentKeyboardFocusManager(),
  70                      FXSwingKeyboardFocusManagerPeer.getInstance());
  71         
  72         } catch (Exception e) {
  73             e.printStackTrace();
  74         }
  75         initialized = true;
  76     }
  77     
  78     static boolean isInitialized() {
  79         return initialized;
  80     }
  81 }