Ptidej-v5.2-master/PADL Serialiser DB4O Tests/rsc/JHotDraw v5.1/src/CH/ifa/draw/standard/NullHandle.java
/*
 * @(#)NullHandle.java 5.1
 *
 */

package CH.ifa.draw.standard;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Rectangle;

import CH.ifa.draw.framework.Figure;
import CH.ifa.draw.framework.Locator;

/**
 * A handle that doesn't change the owned figure. Its only purpose is
 * to show feedback that a figure is selected.
 * <hr>
 * <b>Design Patterns</b><P>
 * <img src="images/red-ball-small.gif" width=6 height=6 alt=" o ">
 * <b>NullObject</b><br>
 * NullObject enables to treat handles that don't do
 * anything in the same way as other handles.
 *
 */
public class NullHandle extends LocatorHandle {

	/**
	 * The handle's locator.
	 */
	protected Locator fLocator;

	public NullHandle(Figure owner, Locator locator) {
		super(owner, locator);
	}

	/**
	 * Draws the NullHandle. NullHandles are drawn as a
	 * red framed rectangle.
	 */
	public void draw(Graphics g) {
		Rectangle r = displayBox();

		g.setColor(Color.black);
		g.drawRect(r.x, r.y, r.width, r.height);
	}
}
