1 /*
   2  * Copyright (c) 2018, 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 jdk.swing.interop;
  27 
  28 import java.awt.SecondaryLoop;
  29 import java.awt.EventQueue;
  30 import sun.awt.FwDispatcher;
  31 import sun.awt.AWTAccessor;
  32 
  33 /**
  34  * This class provides a wrapper over inner class DispatcherProxy
  35  * which implements jdk internal sun.awt.FwDispatcher interface
  36  * and provides APIs to be used by FX swing interop to access and use
  37  * FwDispatcher APIs.
  38  *
  39  * @since 11
  40  */
  41 public abstract class DispatcherWrapper {
  42     private DispatcherProxy fwd;
  43 
  44     public DispatcherWrapper() {
  45         fwd = new DispatcherProxy();
  46     }
  47 
  48     public abstract boolean isDispatchThread();
  49 
  50     public abstract void scheduleDispatch(Runnable r);
  51         
  52     public abstract SecondaryLoop createSecondaryLoop();
  53 
  54     public static void setFwDispatcher(EventQueue eventQueue, DispatcherWrapper dispatcher) {
  55         AWTAccessor.getEventQueueAccessor().setFwDispatcher(eventQueue, dispatcher.fwd);
  56     }
  57         
  58     private class DispatcherProxy implements FwDispatcher {
  59 
  60         @Override
  61         public boolean isDispatchThread() {
  62             return DispatcherWrapper.this.isDispatchThread();
  63         }
  64 
  65         @Override
  66         public void scheduleDispatch(Runnable r) {
  67             DispatcherWrapper.this.scheduleDispatch(r);
  68         }
  69 
  70         @Override
  71         public SecondaryLoop createSecondaryLoop() {
  72             return DispatcherWrapper.this.createSecondaryLoop(); 
  73         }
  74     }
  75 }