/*

* Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.

* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

*

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*/

package java.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.

* <p>

* 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<PropertyChangeListener>

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;

}

}