/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (the "License").

 * You may not use this file except in compliance with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.

 */

package com.oracle.solaris.vp.panel.common.model;

import java.beans.*;

/**

 * A {@code PropertyChangeListener} that forwards {@code PropertyChangeEvent}s

 * to the specified {@code AbstractManagedObject}'s listeners.

 */

public class PropertyChangeForwarder implements PropertyChangeListener

{

    private AbstractManagedObject managedObject_;

    private Object source_;

    /**

     * Constructs a {@code PropertyChangeForwarder} that forwards events

     * to the specified {@code AbstractManagedObject}'s listeners, rewriting

     * the events' source to be the specified {@code AbstractManagedObject}.

     *

     * @param mo the object's whose listeners are sent the event, and is

     * made the source of the event

     */

    public PropertyChangeForwarder(AbstractManagedObject mo) {

	this(mo, mo);

    }

    /**

     * Constructs a {@code PropertyChangeForwarder} that forwards events

     * to the specified {@code AbstractManagedObject}'s listeners, rewriting

     * the events' source.

     *

     * @param mo the object's whose listeners are sent the event

     * @param source the new source of the events, or {@code null} to

     * leave the source alone

     */

    public PropertyChangeForwarder(AbstractManagedObject mo, Object source) {

	managedObject_ = mo;

	source_ = source;

    }

    @Override

    public void propertyChange(PropertyChangeEvent e) {

	if (source_ != null)

	    e = new PropertyChangeEvent(source_, e.getPropertyName(),

		e.getOldValue(), e.getNewValue());

	managedObject_.firePropertyChange(e);

    }

}