PropertyChangeListenerProxy.java

/*
 *  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 java.beans;

import java.util.EventListenerProxy;

/**
 * The implementation of this listener proxy just delegates the received events
 * to its listener.
 */
public class PropertyChangeListenerProxy extends EventListenerProxy implements
        PropertyChangeListener {

    String propertyName;

    /**
     * Creates a new listener proxy that associates a listener with a property
     * name.
     *
     * @param propertyName
     *            the name of the associated property.
     * @param listener
     *            the listener to delegate incoming events to.
     */
    public PropertyChangeListenerProxy(String propertyName,
            PropertyChangeListener listener) {
        super(listener);
        this.propertyName = propertyName;
    }

    /**
     * Returns the name of the property associated with this listener proxy.
     *
     * @return the name of the associated property.
     */
    public String getPropertyName() {
        return propertyName;
    }

    public void propertyChange(PropertyChangeEvent event) {
        PropertyChangeListener listener = (PropertyChangeListener) getListener();
        listener.propertyChange(event);
    }
}