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Java > Open Source Codes > org > eclipse > compare > IPropertyChangeNotifier


1 /*******************************************************************************
2  * Copyright (c) 2000, 2005 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.compare;
12
13 import org.eclipse.jface.util.IPropertyChangeListener;
14
15 /**
16  * Interface common to all objects that provide a means for registering
17  * for property change notification.
18  * <p>
19  * Clients may implement this interface.
20  * </p>
21  *
22  * @see org.eclipse.jface.util.IPropertyChangeListener
23  */
24 public interface IPropertyChangeNotifier {
25     
26     /**
27      * Adds a listener for property changes to this notifier.
28      * Has no effect if an identical listener is already registered.
29      *
30      * @param listener a property change listener
31      */
32     void addPropertyChangeListener(IPropertyChangeListener listener);
33     
34     /**
35      * Removes the given content change listener from this notifier.
36      * Has no effect if the identical listener is not registered.
37      *
38      * @param listener a property change listener
39      */
40     void removePropertyChangeListener(IPropertyChangeListener listener);
41 }
42
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