1 /* 2 * Copyright (c) 2016, 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.sun.javafx.embed.swing; 27 28 import com.sun.javafx.application.PlatformImpl; 29 import com.sun.javafx.tk.Toolkit; 30 import java.awt.EventQueue; 31 import java.awt.SecondaryLoop; 32 import java.security.AccessController; 33 import java.security.PrivilegedAction; 34 import java.util.concurrent.atomic.AtomicBoolean; 35 import javafx.application.Platform; 36 import jdk.swing.interop.DispatcherWrapper; 37 38 public class SwingFXUtilsImpl { 39 40 private static class FwSecondaryLoop implements SecondaryLoop { 41 42 private final AtomicBoolean isRunning = new AtomicBoolean(false); 43 44 @Override 45 public boolean enter() { 46 if (isRunning.compareAndSet(false, true)) { 47 PlatformImpl.runAndWait(() -> { 48 Toolkit.getToolkit().enterNestedEventLoop(FwSecondaryLoop.this); 49 }); 50 return true; 51 } 52 return false; 53 } 54 55 @Override 56 public boolean exit() { 57 if (isRunning.compareAndSet(true, false)) { 58 PlatformImpl.runAndWait(() -> { 59 Toolkit.getToolkit().exitNestedEventLoop(FwSecondaryLoop.this, null); 60 }); 61 return true; 62 } 63 return false; 64 } 65 } 66 67 private static class FXDispatcher extends DispatcherWrapper { 68 69 @Override 70 public boolean isDispatchThread() { 71 return Platform.isFxApplicationThread(); 72 } 73 74 @Override 75 public void scheduleDispatch(Runnable runnable) { 76 Platform.runLater(runnable); 77 } 78 79 @Override 80 public SecondaryLoop createSecondaryLoop() { 81 return new FwSecondaryLoop(); 82 } 83 } 84 85 private static EventQueue getEventQueue() { 86 return AccessController.doPrivileged( 87 (PrivilegedAction<EventQueue>) () -> java.awt.Toolkit.getDefaultToolkit().getSystemEventQueue()); 88 } 89 90 //Called with reflection from PlatformImpl to avoid dependency 91 public static void installFwEventQueue() { 92 DispatcherWrapper.setFwDispatcher(getEventQueue(), new FXDispatcher()); 93 } 94 95 //Called with reflection from PlatformImpl to avoid dependency 96 public static void removeFwEventQueue() { 97 DispatcherWrapper.setFwDispatcher(getEventQueue(), null); 98 } 99 }