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Java > Open Source Codes > org > objectstyle > cayenne > swing > PropertyBinding


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
4  * ObjectStyle Group - http://objectstyle.org/
5  *
6  * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
7  * of the software. All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if any,
22  * must include the following acknowlegement:
23  * "This product includes software developed by independent contributors
24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
29  * or promote products derived from this software without prior written
30  * permission. For written permission, email
31  * "andrus at objectstyle dot org".
32  *
33  * 5. Products derived from this software may not be called "ObjectStyle"
34  * or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
35  * names without prior written permission.
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37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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48  * SUCH DAMAGE.
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50  *
51  * This software consists of voluntary contributions made by many
52  * individuals and hosted on ObjectStyle Group web site. For more
53  * information on the ObjectStyle Group, please see
54  * <http://objectstyle.org/>.
55  */
56 package org.objectstyle.cayenne.swing;
57
58 import java.awt.Component JavaDoc;
59 import java.beans.PropertyChangeEvent JavaDoc;
60 import java.beans.PropertyChangeListener JavaDoc;
61
62 /**
63  * A binding for connecting to children that implement BoundComponent.
64  *
65  * @since 1.2
66  * @author Andrei Adamchik
67  */
68 public class PropertyBinding extends BindingBase {
69
70     protected BoundComponent boundComponent;
71     protected String JavaDoc boundExpression;
72
73     public PropertyBinding(BoundComponent boundComponent, String JavaDoc propertyExpression,
74             String JavaDoc boundExpression) {
75         super(propertyExpression);
76
77         this.boundExpression = boundExpression;
78         this.boundComponent = boundComponent;
79         this.boundComponent.addPropertyChangeListener(boundExpression,
80                 new PropertyChangeListener JavaDoc() {
81
82                     public void propertyChange(PropertyChangeEvent JavaDoc event) {
83                         setValue(event.getNewValue());
84                     }
85
86                 });
87     }
88
89     public Component JavaDoc getView() {
90         return boundComponent.getView();
91     }
92
93     public void updateView() {
94         boundComponent.bindingUpdated(boundExpression, getValue());
95     }
96 }
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