circlestate.java

源码为科学出版社出版的英文<java设计模式>(影印版)所用的所有例子程序

public class CircleState extends State {
    private Mediator med;        //save Mediator
    public CircleState(Mediator md) {
        med = md;
    }
    //Draw circle where mouse clicks
    public void mouseDown(int x, int y) {
        med.addDrawing(new visCircle(x, y));
    }
}