/core/src/com/bluemarsh/jswat/core/watch/Watch.java

 1/*
 2 * The contents of this file are subject to the terms of the Common Development
 3 * and Distribution License (the License). You may not use this file except in
 4 * compliance with the License.
 5 *
 6 * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
 7 * or http://www.netbeans.org/cddl.txt.
 8 *
 9 * When distributing Covered Code, include this CDDL Header Notice in each file
10 * and include the License file at http://www.netbeans.org/cddl.txt.
11 * If applicable, add the following below the CDDL Header, with the fields
12 * enclosed by brackets [] replaced by your own identifying information:
13 * "Portions Copyrighted [year] [name of copyright owner]"
14 *
15 * The Original Software is JSwat. The Initial Developer of the Original
16 * Software is Nathan L. Fiedler. Portions created by Nathan L. Fiedler
17 * are Copyright (C) 2006. All Rights Reserved.
18 *
19 * Contributor(s): Nathan L. Fiedler.
20 *
21 * $Id: Watch.java 40 2009-01-09 07:35:28Z nathanfiedler $
22 */
23
24package com.bluemarsh.jswat.core.watch;
25
26import java.beans.PropertyChangeListener;
27
28/**
29 * A Watch represents all types of watches, including ones based on
30 * expressions and those that are fixed objects.
31 *
32 * @author Nathan Fiedler
33 */
34public interface Watch {
35
36    /**
37     * Add a PropertyChangeListener to the listener list.
38     *
39     * @param  listener  the PropertyChangeListener to be added.
40     */
41    void addPropertyChangeListener(PropertyChangeListener listener);
42
43    /**
44     * Remove a PropertyChangeListener from the listener list.
45     *
46     * @param  listener  the PropertyChangeListener to be removed.
47     */
48    void removePropertyChangeListener(PropertyChangeListener listener);
49}