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Java > Open Source Codes > org > mortbay > util > EventProvider


1 //========================================================================
2 //$Id: EventProvider.java,v 1.1 2004/10/02 08:34:20 gregwilkins Exp $
3 //Copyright 2004 Mort Bay Consulting Pty. Ltd.
4 //------------------------------------------------------------------------
5 //Licensed under the Apache License, Version 2.0 (the "License");
6 //you may not use this file except in compliance with the License.
7 //You may obtain a copy of the License at
8 //http://www.apache.org/licenses/LICENSE-2.0
9 //Unless required by applicable law or agreed to in writing, software
10 //distributed under the License is distributed on an "AS IS" BASIS,
11 //WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 //See the License for the specific language governing permissions and
13 //limitations under the License.
14 //========================================================================
15
16 package org.mortbay.util;
17
18 import java.util.EventListener JavaDoc;
19
20 /** Source of EventObjects for registered EventListeners.
21  * the actual implementation of EventProvider must define what types of
22  * EventListeners can be registered.
23  * @author gregw
24  *
25  */
26 public interface EventProvider
27 {
28     /** Register an EventListener
29      * @param listener
30      * @throws IllegalArgumentException If the EventListener type is not supported.
31      */
32     public void addEventListener(EventListener JavaDoc listener)
33         throws IllegalArgumentException JavaDoc;
34     
35     public void removeEventListener(EventListener JavaDoc listener);
36
37 }
38
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