/*
* 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 java.beans;
import java.util.EventListenerProxy;
/**
* A class which extends the <code>EventListenerProxy</code> specifically
* for associating a <code>VetoableChangeListener</code> with a "constrained"
* property. Instances of this class can be added as a
* <code>VetoableChangeListener</code> to a bean which supports firing
* VetoableChange events.
* <p>
* If the object has a <code>getVetoableChangeListeners()</code>
* method then the array returned could be a mixture of
* <code>VetoableChangeListener</code> and
* <code>VetoableChangeListenerProxy</code> objects.
* <p>
* @see java.util.EventListenerProxy
* @see VetoableChangeListener
* @see VetoableChangeSupport#getVetoableChangeListeners
* @since 1.4
*/
public class VetoableChangeListenerProxy extends EventListenerProxy
implements VetoableChangeListener {
private String propertyName;
/**
* @param propertyName The name of the property to listen on.
* @param listener The listener object
*/
public VetoableChangeListenerProxy(String propertyName,
VetoableChangeListener listener) {
super(listener);
this.propertyName = propertyName;
}
/**
* Forwards the property change event to the listener delegate.
*
* @param evt the property change event
*
* @exception PropertyVetoException if the recipient wishes the property
* change to be rolled back.
*/
public void vetoableChange(PropertyChangeEvent evt) throws
PropertyVetoException{
((VetoableChangeListener)getListener()).vetoableChange(evt);
}
/**
* Returns the name of the named property associated with the
* listener.
*/
public String getPropertyName() {
return propertyName;
}
}