content: /*
   * 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
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  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 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;
      }
  }
  