1 /*
2 * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25 package java.beans;
26
27 /**
28 * An "IndexedPropertyChange" event gets delivered whenever a component that
29 * conforms to the JavaBeans<TM> specification (a "bean") changes a bound
30 * indexed property. This class is an extension of <code>PropertyChangeEvent</code>
31 * but contains the index of the property that has changed.
32 * <P>
33 * Null values may be provided for the old and the new values if their
34 * true values are not known.
35 * <P>
36 * An event source may send a null object as the name to indicate that an
37 * arbitrary set of if its properties have changed. In this case the
38 * old and new values should also be null.
39 *
40 * @since 1.5
41 * @author Mark Davidson
42 */
43 public class IndexedPropertyChangeEvent extends PropertyChangeEvent {
44
45 private int index;
46
47 /**
48 * Constructs a new <code>IndexedPropertyChangeEvent</code> object.
49 *
50 * @param source The bean that fired the event.
51 * @param propertyName The programmatic name of the property that
52 * was changed.
53 * @param oldValue The old value of the property.
54 * @param newValue The new value of the property.
55 * @param index index of the property element that was changed.
56 */
57 public IndexedPropertyChangeEvent(Object source, String propertyName,
58 Object oldValue, Object newValue,
59 int index) {
60 super (source, propertyName, oldValue, newValue);
61 this.index = index;
62 }
63
64
65 /**
66 * Gets the index of the property that was changed.
67 *
68 * @return The index specifying the property element that was
69 * changed.
70 */
71 public int getIndex() {
72 return index;
73 }
74 }
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