createellipsecommand.java

GEF初学者可以用来对照的小例子

package com.dss.moon.gef.commands;

import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.commands.Command;

import com.dss.moon.gef.model.Diagram;
import com.dss.moon.gef.model.Ellipse;

public class CreateEllipseCommand extends Command{

	protected Diagram diagram;
	
	protected Ellipse ellipse;
	
	protected Rectangle contraint;

	/**
	 * @return the diagram
	 */

	/**
	 * @param diagram the diagram to set
	 */
	public void setDiagram(Diagram diagram) {
		this.diagram = diagram;
	}


	/**
	 * @param ellipse the ellipse to set
	 */
	public void setEllipse(Ellipse e) {
		
		this.ellipse = e;
	}


	/**
	 * @param contraint the contraint to set
	 */
	public void setContraint(Rectangle contraint) {
		this.contraint = contraint;
	}
	
	public void execute(){
		if(this.contraint != null){
			this.ellipse.setConstraint(this.contraint);
		}
		this.diagram.addChild(ellipse);
	}
	
}