diagram.java

GEF初学者可以用来对照的小例子

package com.dss.moon.gef.model;

import java.util.ArrayList;
import java.util.List;

public class Diagram extends Subject{

	public List children = new ArrayList();
	
	public void addChild(Ellipse child){
		children.add(child);
		firePropertyChange("children",null,children);
		
	}

	public List getChildren() {
		return children;
	}
	
	
}