week3 作业一

public interface Draw {
  
    void draw();
}

public class LeafNode implements Draw {
    private String name;
    // type不同，可能带来其他诸如渲染效果的不同，具体功能应当使用策略模式优化设计，这里仅打印
    private String type;
    public LeafNode(String name, String type) {
        this.name = name;
        this.type = type;
    }
    public void draw() {
        System.out.println("print "+this.type+"("+this.name+")");
    }
}

public class BranchNode implements Draw {
    private LeafNode leafNode;
    private List<? extends Draw> children;
    public BranchNode(LeafNode leafNode, List<? extends Draw> children) {
        this.leafNode = leafNode;
        this.children = children;
    }
    public void draw() {
        leafNode.draw();
        for (Draw child : children) {
            child.draw();
        }
    }
}

 public static void main(String[] args) {
        // init
        LeafNode logo = new LeafNode("LOGO图片","Picture");
        LeafNode login = new LeafNode("登陆","Button");
        LeafNode register = new LeafNode("注册","Button");
        LeafNode username = new LeafNode("用户名","Label");
        LeafNode text_box = new LeafNode("文本框","TextBox");
        LeafNode password_label = new LeafNode("密码","Label");
        LeafNode password_box = new LeafNode("密码框","PasswordBox");
        LeafNode check_box = new LeafNode("复选框","CheckBox");
        LeafNode remember_me = new LeafNode("记住用户名","TextBox");
        LeafNode forget_password = new LeafNode("忘记密码","LinkLabel");
        BranchNode FRAME1 =
                new BranchNode(new LeafNode("FRAME1","Frame"),Arrays.asList(username, text_box, password_label, password_box,check_box,remember_me,forget_password));
        BranchNode window = new BranchNode(new LeafNode("WINDOW窗口","WinForm"), Arrays.asList(logo, login, register, FRAME1));
        // draw
        window.draw();
    }