/*
 * @(#)BouncingDrawing.java
 *
 * Project:		JHotdraw - a GUI framework for technical drawings
 *				http://www.jhotdraw.org
 *				http://jhotdraw.sourceforge.net
 * Copyright:	© by the original author(s) and all contributors
 * License:		Lesser GNU Public License (LGPL)
 *				http://www.opensource.org/licenses/lgpl-license.html
 */

package CH.ifa.draw.samples.javadraw;

import java.awt.*;
import java.util.*;
import CH.ifa.draw.framework.*;
import CH.ifa.draw.standard.*;
import CH.ifa.draw.util.Animatable;

/**
 * @version <$CURRENT_VERSION$>
 */
public class BouncingDrawing extends StandardDrawing implements Animatable {
    /*
     * Serialization support.
     */
    private static final long serialVersionUID = -8566272817418441758L;
    private int bouncingDrawingSerializedDataVersion = 1;

    public synchronized Figure add(Figure figure) {
        if (!(figure instanceof AnimationDecorator) &&
            !(figure instanceof ConnectionFigure)) {
            figure = new AnimationDecorator(figure);
        }
        return super.add(figure);
    }

    public synchronized Figure remove(Figure figure) {
        return super.remove(figure);
    }

	/**
	 * @param figure figure to be replaced
	 * @param replacement figure that should replace the specified figure
	 * @return the figure that has been inserted (might be different from the figure specified)
	 */
    public synchronized Figure replace(Figure figure, Figure replacement) {
        if (!(replacement instanceof AnimationDecorator) &&
            !(replacement instanceof ConnectionFigure)) {
            replacement = new AnimationDecorator(replacement);
        }
        return super.replace(figure, replacement);
    }

    public void animationStep() {
        Enumeration k = figures();
        while (k.hasMoreElements()) {
            Figure f = (Figure) k.nextElement();
            
            if(!(f instanceof ConnectionFigure)) {
                ((AnimationDecorator) f).animationStep();
            }
        }
    }
}