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    1   /*
    2    * Copyright (c) 2000, 2007, 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 java.awt;
   27   
   28   import sun.awt.AppContext;
   29   import sun.awt.SunToolkit;
   30   
   31   /**
   32    * A wrapping tag for a nested AWTEvent which indicates that the event was
   33    * sent from another AppContext. The destination AppContext should handle the
   34    * event even if it is currently blocked waiting for a SequencedEvent or
   35    * another SentEvent to be handled.
   36    *
   37    * @author David Mendenhall
   38    */
   39   class SentEvent extends AWTEvent implements ActiveEvent {
   40       /*
   41        * serialVersionUID
   42        */
   43       private static final long serialVersionUID = -383615247028828931L;
   44   
   45       static final int ID =
   46           java.awt.event.FocusEvent.FOCUS_LAST + 2;
   47   
   48       boolean dispatched;
   49       private AWTEvent nested;
   50       private AppContext toNotify;
   51   
   52       SentEvent() {
   53           this(null);
   54       }
   55       SentEvent(AWTEvent nested) {
   56           this(nested, null);
   57       }
   58       SentEvent(AWTEvent nested, AppContext toNotify) {
   59           super((nested != null)
   60                     ? nested.getSource()
   61                     : Toolkit.getDefaultToolkit(),
   62                 ID);
   63           this.nested = nested;
   64           this.toNotify = toNotify;
   65       }
   66   
   67       public void dispatch() {
   68           try {
   69               if (nested != null) {
   70                   Toolkit.getEventQueue().dispatchEvent(nested);
   71               }
   72           } finally {
   73               dispatched = true;
   74               if (toNotify != null) {
   75                   SunToolkit.postEvent(toNotify, new SentEvent());
   76               }
   77               synchronized (this) {
   78                   notifyAll();
   79               }
   80           }
   81       }
   82       final void dispose() {
   83           dispatched = true;
   84           if (toNotify != null) {
   85               SunToolkit.postEvent(toNotify, new SentEvent());
   86           }
   87           synchronized (this) {
   88               notifyAll();
   89           }
   90       }
   91   }

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