jaroslav@601: /*
jaroslav@601:  * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
jaroslav@601:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jaroslav@601:  *
jaroslav@601:  * This code is free software; you can redistribute it and/or modify it
jaroslav@601:  * under the terms of the GNU General Public License version 2 only, as
jaroslav@601:  * published by the Free Software Foundation.  Oracle designates this
jaroslav@601:  * particular file as subject to the "Classpath" exception as provided
jaroslav@601:  * by Oracle in the LICENSE file that accompanied this code.
jaroslav@601:  *
jaroslav@601:  * This code is distributed in the hope that it will be useful, but WITHOUT
jaroslav@601:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jaroslav@601:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jaroslav@601:  * version 2 for more details (a copy is included in the LICENSE file that
jaroslav@601:  * accompanied this code).
jaroslav@601:  *
jaroslav@601:  * You should have received a copy of the GNU General Public License version
jaroslav@601:  * 2 along with this work; if not, write to the Free Software Foundation,
jaroslav@601:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jaroslav@601:  *
jaroslav@601:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jaroslav@601:  * or visit www.oracle.com if you need additional information or have any
jaroslav@601:  * questions.
jaroslav@601:  */
jaroslav@601: 
jaroslav@601: package java.beans;
jaroslav@601: 
jaroslav@601: import java.util.EventListenerProxy;
jaroslav@601: 
jaroslav@601: /**
jaroslav@601:  * A class which extends the {@code EventListenerProxy}
jaroslav@601:  * specifically for adding a {@code PropertyChangeListener}
jaroslav@601:  * with a "bound" property.
jaroslav@601:  * Instances of this class can be added
jaroslav@601:  * as {@code PropertyChangeListener}s to a bean
jaroslav@601:  * which supports firing property change events.
jaroslav@601:  * <p>
jaroslav@601:  * If the object has a {@code getPropertyChangeListeners} method
jaroslav@601:  * then the array returned could be a mixture of {@code PropertyChangeListener}
jaroslav@601:  * and {@code PropertyChangeListenerProxy} objects.
jaroslav@601:  *
jaroslav@601:  * @see java.util.EventListenerProxy
jaroslav@601:  * @see PropertyChangeSupport#getPropertyChangeListeners
jaroslav@601:  * @since 1.4
jaroslav@601:  */
jaroslav@601: public class PropertyChangeListenerProxy
jaroslav@601:         extends EventListenerProxy<PropertyChangeListener>
jaroslav@601:         implements PropertyChangeListener {
jaroslav@601: 
jaroslav@601:     private final String propertyName;
jaroslav@601: 
jaroslav@601:     /**
jaroslav@601:      * Constructor which binds the {@code PropertyChangeListener}
jaroslav@601:      * to a specific property.
jaroslav@601:      *
jaroslav@601:      * @param propertyName  the name of the property to listen on
jaroslav@601:      * @param listener      the listener object
jaroslav@601:      */
jaroslav@601:     public PropertyChangeListenerProxy(String propertyName, PropertyChangeListener listener) {
jaroslav@601:         super(listener);
jaroslav@601:         this.propertyName = propertyName;
jaroslav@601:     }
jaroslav@601: 
jaroslav@601:     /**
jaroslav@601:      * Forwards the property change event to the listener delegate.
jaroslav@601:      *
jaroslav@601:      * @param event  the property change event
jaroslav@601:      */
jaroslav@601:     public void propertyChange(PropertyChangeEvent event) {
jaroslav@601:         getListener().propertyChange(event);
jaroslav@601:     }
jaroslav@601: 
jaroslav@601:     /**
jaroslav@601:      * Returns the name of the named property associated with the listener.
jaroslav@601:      *
jaroslav@601:      * @return the name of the named property associated with the listener
jaroslav@601:      */
jaroslav@601:     public String getPropertyName() {
jaroslav@601:         return this.propertyName;
jaroslav@601:     }
jaroslav@601: }