fillstate.java

来自「设计模式是软件工程的核心思想」· Java 代码 · 共 26 行

import java.awt.*;
import java.util.*;
public class FillState extends State {
    private Mediator med;   //save Mediator
    private Color color;    //save current color
    public FillState(Mediator md) {
        med = md;
    }
    //Fill drawing if selected
    public void select(Drawing d, Color c) {
        color = c;
        if (d!= null) {
            d.setFill(c);  //fill that drawing
        }
    }
    //Fill drawing if you click inside one
    public void mouseDown(int x, int y) {
        Vector drawings = med.getDrawings();
        for (int i=0; i< drawings.size(); i++) {
            Drawing d = (Drawing)drawings.elementAt(i);
            if (d.contains(x, y))
                d.setFill(color); //fill drawing
        }
    }
}