/*
* @(#)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);
}
}