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/*
* Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package ajava.beans;
import java.util.EventListenerProxy;
/**
* A class which extends the {@code EventListenerProxy}
* specifically for adding a {@code PropertyChangeListener}
* with a "bound" property.
* Instances of this class can be added
* as {@code PropertyChangeListener}s to a bean
* which supports firing property change events.
*
* If the object has a {@code getPropertyChangeListeners} method
* then the array returned could be a mixture of {@code PropertyChangeListener}
* and {@code PropertyChangeListenerProxy} objects.
*
* @see java.util.EventListenerProxy
* @see PropertyChangeSupport#getPropertyChangeListeners
* @since 1.4
*/
public class PropertyChangeListenerProxy
extends EventListenerProxy
implements PropertyChangeListener {
private final String propertyName;
/**
* Constructor which binds the {@code PropertyChangeListener}
* to a specific property.
*
* @param propertyName the name of the property to listen on
* @param listener the listener object
*/
public PropertyChangeListenerProxy(String propertyName, PropertyChangeListener listener) {
super(listener);
this.propertyName = propertyName;
}
/**
* Forwards the property change event to the listener delegate.
*
* @param event the property change event
*/
public void propertyChange(PropertyChangeEvent event) {
getListener().propertyChange(event);
}
/**
* Returns the name of the named property associated with the listener.
*
* @return the name of the named property associated with the listener
*/
public String getPropertyName() {
return this.propertyName;
}
}