PendingOperations


1   /*
2    * PendingOperations.java
3    *
4    * Copyright (C) 2002 Peter Graves
5    * $Id: PendingOperations.java,v 1.1.1.1 2002/09/24 16:07:45 piso Exp $
6    *
7    * This program is free software; you can redistribute it and/or
8    * modify it under the terms of the GNU General Public License
9    * as published by the Free Software Foundation; either version 2
10   * of the License, or (at your option) any later version.
11   *
12   * This program is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   * GNU General Public License for more details.
16   *
17   * You should have received a copy of the GNU General Public License
18   * along with this program; if not, write to the Free Software
19   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
20   */
21  
22  package org.armedbear.j;
23  
24  import java.util.ArrayList  ;
25  
26  public final class PendingOperations implements Runnable  
27  {
28      private ArrayList   operations;
29  
30      public PendingOperations()
31      {
32      }
33  
34      public synchronized void add(Object   object)
35      {
36          if (operations == null)
37              operations = new ArrayList  ();
38          operations.add(object);
39      }
40  
41      public synchronized void remove(Object   object)
42      {
43          operations.remove(object);
44          if (operations.size() == 0)
45              notify();
46      }
47  
48      public synchronized void run()
49      {
50          if (operations != null && operations.size() > 0) {
51              Editor.currentEditor().status("Completing pending operations...");
52              while (operations.size() > 0) {
53                  try {
54                      wait();
55                  }
56                  catch (InterruptedException   e) {
57                      Log.error(e);
58                  }
59              }
60          }
61      }
62  }
63
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