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/*
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* Copyright 2000 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package java.beans;
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import java.util.EventListenerProxy;
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/**
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* A class which extends the {@code EventListenerProxy}
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* specifically for adding a {@code VetoableChangeListener}
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* with a "constrained" property.
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* Instances of this class can be added
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* as {@code VetoableChangeListener}s to a bean
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* which supports firing vetoable change events.
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* <p>
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* If the object has a {@code getVetoableChangeListeners} method
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* then the array returned could be a mixture of {@code VetoableChangeListener}
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* and {@code VetoableChangeListenerProxy} objects.
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*
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* @see java.util.EventListenerProxy
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* @see VetoableChangeSupport#getVetoableChangeListeners
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* @since 1.4
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*/
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public class VetoableChangeListenerProxy
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extends EventListenerProxy<VetoableChangeListener>
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implements VetoableChangeListener {
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private final String propertyName;
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/**
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* Constructor which binds the {@code VetoableChangeListener}
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* to a specific property.
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*
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* @param propertyName the name of the property to listen on
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* @param listener the listener object
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*/
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public VetoableChangeListenerProxy(String propertyName, VetoableChangeListener listener) {
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super(listener);
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this.propertyName = propertyName;
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}
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/**
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* Forwards the property change event to the listener delegate.
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*
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* @param event the property change event
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*
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* @exception PropertyVetoException if the recipient wishes the property
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* change to be rolled back
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*/
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public void vetoableChange(PropertyChangeEvent event) throws PropertyVetoException{
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getListener().vetoableChange(event);
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}
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/**
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* Returns the name of the named property associated with the listener.
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*
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* @return the name of the named property associated with the listener
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*/
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public String getPropertyName() {
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return this.propertyName;
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}
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}
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