/*
* Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package java.beans;
/**
* A class which extends the <code>EventListenerProxy</code> specifically
* for adding a named <code>PropertyChangeListener</code>. Instances of
* this class can be added as <code>PropertyChangeListener</code> to
* an object.
* <p>
* If the object has a <code>getPropertyChangeListeners()</code>
* method then the array returned could be a mixture of
* <code>PropertyChangeListener</code> and
* <code>PropertyChangeListenerProxy</code> objects.
*
* @see java.util.EventListenerProxy
* @since 1.4
*/
public class PropertyChangeListenerProxy extends java.util.EventListenerProxy
implements PropertyChangeListener {
private String propertyName;
/**
* Constructor which binds the PropertyChangeListener to a specific
* property.
*
* @param listener The listener object
* @param propertyName The name of the property to listen on.
*/
public PropertyChangeListenerProxy(String propertyName,
PropertyChangeListener listener) {
// XXX - msd NOTE: I changed the order of the arguments so that it's
// similar to PropertyChangeSupport.addPropertyChangeListener(String,
// PropertyChangeListener);
super(listener);
this.propertyName = propertyName;
}
/**
* Forwards the property change event to the listener delegate.
*
* @param evt the property change event
*/
public void propertyChange(PropertyChangeEvent evt) {
((PropertyChangeListener)getListener()).propertyChange(evt);
}
/**
* Returns the name of the named property associated with the
* listener.
*/
public String getPropertyName() {
return propertyName;
}
}