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World Wind is a collection of components that interactively display 3D geographic information within Java applications or applets.

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/*
 * Copyright (C) 2012 United States Government as represented by the Administrator of the
 * National Aeronautics and Space Administration.
 * All Rights Reserved.
 */

package gov.nasa.worldwind;

import gov.nasa.worldwind.avlist.AVListImpl;
import gov.nasa.worldwind.event.*;
import gov.nasa.worldwind.util.*;

/**
 * Implements WWObject functionality. Meant to be either subclassed or aggregated by classes implementing
 * WWObject.
 *
 * @author Tom Gaskins
 * @version $Id: WWObjectImpl.java 1171 2013-02-11 21:45:02Z dcollins $
 */
public class WWObjectImpl extends AVListImpl implements WWObject
{
    /**
     * Constructs a new WWObjectImpl.
     */
    public WWObjectImpl()
    {
    }

    public WWObjectImpl(Object source)
    {
        super(source);
    }

    /**
     * The property change listener for this instance.
     * Receives property change notifications that this instance has registered with other property change notifiers.
     * @param propertyChangeEvent the event
     * @throws IllegalArgumentException if propertyChangeEvent is null
     */
    public void propertyChange(java.beans.PropertyChangeEvent propertyChangeEvent)
    {
        if (propertyChangeEvent == null)
        {
            String msg = Logging.getMessage("nullValue.PropertyChangeEventIsNull");
            Logging.logger().severe(msg);
            throw new IllegalArgumentException(msg);
        }

        // Notify all *my* listeners of the change that I caught
        super.firePropertyChange(propertyChangeEvent);
    }

    /** Empty implementation of MessageListener. */
    public void onMessage(Message message)
    {
        // Empty implementation
    }
}