diagram.java

GEF基础源码

package com.jixy.study.gef.model;

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

import com.jixy.study.gef.util.Subject;

public class Diagram extends Subject{

	// Diagram初始化一个列表children用来存放所有在其上显示的图形元素
	protected List children = new ArrayList();

	public void addChild(Ellipse child) {

		firePropertyChange("children", null, children);
		children.add(child);

	}

	public List getChildren() {

		return children;

	}

}