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1   /*
2    * Copyright (c) 1998-2002 The Jgroup Team.
3    *
4    * This program is free software; you can redistribute it and/or modify
5    * it under the terms of the GNU Lesser General Public License version 2 as
6    * published by the Free Software Foundation.
7    *
8    * This program is distributed in the hope that it will be useful,
9    * but WITHOUT ANY WARRANTY; without even the implied warranty of
10   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11   * GNU Lesser General Public License for more details.
12   *
13   * You should have received a copy of the GNU Lesser General Public License
14   * along with this program; if not, write to the Free Software
15   * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
16   *
17   */
18  
19  package jgroup.relacs.gm;
20  
21  import jgroup.relacs.events.Event;
22  
23  /**
24   *  The <code>DispatcherListener</code> interface must be implemented by
25   *  layers that wish to receive event messages originated from the
26   *  daemon.
27   *
28   *  @author Hein Meling
29   *  @since Jgroup 1.2
30   */
31  public interface DispatcherListener
32  {
33  
34    /**
35     *  Returns the set of event types supported by this listener.  Legal
36     *  event types are given in the <code>EventTags</code> interface.
37     */
38    public int[] eventTypes();
39  
40    /**
41     *  This method is invoked by a dispatcher to notify a listener
42     *  about an event. 
43     *
44     *  @param event
45     *    The <code>Event</code> object to be processed.
46     */
47    public void notifyEvent(Event event);
48  
49  } // END DispatcherListener