01: /*
02: * $Id: MessageSource.java,v 1.2 2005/10/10 18:03:08 rbair Exp $
03: *
04: * Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
05: * Santa Clara, California 95054, U.S.A. All rights reserved.
06: *
07: * This library is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11: *
12: * This library 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 GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this library; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20: */
21:
22: package org.jdesktop.swingx.event;
23:
24: /**
25: * Interface for MessageListener registrations methods and indicates that the
26: * implementation class is a source of MessageEvents.
27: * MessageListeners which are interested in MessageEvents from this class can
28: * register themselves as listeners.
29: *
30: * @see MessageEvent
31: * @see MessageListener
32: * @author Mark Davidson
33: */
34: public interface MessageSource {
35:
36: /**
37: * Register the MessageListener.
38: *
39: * @param l the listener to register
40: */
41: void addMessageListener(MessageListener l);
42:
43: /**
44: * Unregister the MessageListener from the MessageSource.
45: *
46: * @param l the listener to unregister
47: */
48: void removeMessageListener(MessageListener l);
49:
50: /**
51: * Returns an array of listeners.
52: *
53: * @return an non null array of MessageListeners.
54: */
55: MessageListener[] getMessageListeners();
56: }
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