IndexedPropertyChangeEvent.java revision 6b811c5daec1b28e6f63b57f98a032236f2c3cf7 
1/*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
13 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
14 * License for the specific language governing permissions and limitations under
15 * the License.
16 */
17
18package java.beans;
19
20/**
21 * A type of {@link PropertyChangeEvent} that indicates that an indexed property
22 * has changed.
23 */
24public class IndexedPropertyChangeEvent extends PropertyChangeEvent {
25
26    private static final long serialVersionUID = -320227448495806870L;
27
28    private final int index;
29
30    /**
31     * Creates a new property changed event with an indication of the property
32     * index.
33     *
34     * @param source
35     *            the changed bean.
36     * @param propertyName
37     *            the changed property, or <code>null</code> to indicate an
38     *            unspecified set of the properties has changed.
39     * @param oldValue
40     *            the previous value of the property, or <code>null</code> if
41     *            the <code>propertyName</code> is <code>null</code> or the
42     *            previous value is unknown.
43     * @param newValue
44     *            the new value of the property, or <code>null</code> if the
45     *            <code>propertyName</code> is <code>null</code> or the new
46     *            value is unknown..
47     * @param index
48     *            the index of the property.
49     */
50    public IndexedPropertyChangeEvent(Object source, String propertyName,
51            Object oldValue, Object newValue, int index) {
52        super(source, propertyName, oldValue, newValue);
53        this.index = index;
54    }
55
56    /**
57     * Answer the index of the property that was changed in this event.
58     *
59     * @return the property element index.
60     */
61    public int getIndex() {
62        return index;
63    }
64}
65