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App55 client library for the Java platform.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.googlecode.openbeans;


/**
 * A type of {@link PropertyChangeEvent} that indicates that an indexed property has changed.
 * 
 * @since 1.5
 */
public class IndexedPropertyChangeEvent extends PropertyChangeEvent
{

	private static final long	serialVersionUID	= -320227448495806870L;

	private final int			index;

	/**
	 * Creates a new property changed event with an indication of the property index.
	 * 
	 * @param source
	 *            the changed bean.
	 * @param propertyName
	 *            the changed property, or null to indicate an unspecified set of the properties have changed.
	 * @param oldValue
	 *            the previous value of the property, or null if the propertyName is null or the previous value is
	 *            unknown.
	 * @param newValue
	 *            the new value of the property, or null if the propertyName is null or the new value is unknown..
	 * @param index
	 *            the index of the property.
	 */
	public IndexedPropertyChangeEvent(Object source, String propertyName, Object oldValue, Object newValue, int index)
	{
		super(source, propertyName, oldValue, newValue);
		this.index = index;
	}

	/**
	 * Answer the index of the property that was changed in this event.
	 * 
	 * @return The property element index.
	 */
	public int getIndex()
	{
		return index;
	}
}