week3: 组合设计模式和单例

public class LeafWidget implements Widget {
    private String name = "";
    public LeafWidget(String name) {
        this.name = name;
    }
    @Override
    public void print() {
        System.out.println(this.getClass().getSimpleName() + "(" + name + ")");
    }
}

import java.util.Vector;
public class CompositeWidget implements Widget {
    private String name = "";
    public CompositeWidget(String name) {
        this.name = name;
    }
    private Vector<Widget> itsWidget = new Vector();
    public void add(Widget widget) {
        itsWidget.add(widget);
    }
    @Override
    public void print() {
        System.out.println(this.getClass().getSimpleName()+ "(" + name + ")");
        for (int i = 0; i < itsWidget.size(); i++) {
            itsWidget.get(i).print();
        }
    }
}

public interface Widget {
    void print();
}

public class WinForm extends CompositeWidget{
    public WinForm() {
        super("WINDOW窗口");
        this.add(new Picture("LOGO图片"));
        this.add(new Button("登录"));
        this.add(new Button("注册"));
        Frame frame = new Frame("Frame1");
        frame.add(new Label("用户名"));
        frame.add(new TextBox("文本框"));
        frame.add(new Label("密码"));
        frame.add(new PasswordBox("密码框"));
        frame.add(new CheckBox("复选框"));
        frame.add(new TextBox("记住用户名"));
        frame.add(new LinkLabel("忘记密码"));
        this.add(frame);
    }
    public static void main(String[] args) {
        WinForm winForm = new WinForm();
        winForm.print();
    }
}

public class Frame extends CompositeWidget{
    public Frame(String name) {
        super(name);
    }
}

public class Button extends LeafWidget{
    public Button(String name) {
        super(name);
    }
}

WinForm(WINDOW窗口)
Picture(LOGO图片)
Button(登录)
Button(注册)
Frame(Frame1)
Label(用户名)
TextBox(文本框)
Label(密码)
PasswordBox(密码框)
CheckBox(复选框)
TextBox(记住用户名)
LinkLabel(忘记密码)