week3 作业

public interface Tree {

    void show();
}

public class TreeNode implements Tree {

    private List<Tree> treeList = new ArrayList<>();

    private String name;

    public TreeNode(String name) {
        this.name = name;
    }

    public void addLeaf(Tree tree) {
        treeList.add(tree);
    }

    @Override
    public void show() {
        System.out.println("print " + name);
        for (Tree tree : treeList) {
            tree.show();
        }
    }
}

public class TreeLeaf implements Tree {

    private String name;

    public TreeLeaf(String name) {
        this.name = name;
    }

    @Override
    public void show() {
        System.out.println("print " + name);
    }
}

public class TreeTester {

    public static void main(String[] args) {
        TreeNode winForm = new TreeNode("WinForm(WINDOW窗口)");
        TreeLeaf logo = new TreeLeaf("Picture(LOGO图片)");
        winForm.addLeaf(logo);

        TreeLeaf login = new TreeLeaf("BUTTON(登录)");
        winForm.addLeaf(login);

        TreeLeaf register = new TreeLeaf("BUTTON(注册)");
        winForm.addLeaf(register);

        TreeNode frame = new TreeNode("Frame(FRAME1)");
        TreeLeaf LabelUsername = new TreeLeaf("LABEL(用户名)");
        frame.addLeaf(LabelUsername);

        TreeLeaf textBoxUsername = new TreeLeaf("TextBox(文本框)");
        frame.addLeaf(textBoxUsername);

        TreeLeaf LabelPwd = new TreeLeaf("Label(密码)");
        frame.addLeaf(LabelPwd);

        TreeLeaf pwdBox = new TreeLeaf("PasswordBox(密码框)");
        frame.addLeaf(pwdBox);

        TreeLeaf checkBox = new TreeLeaf("CheckBox(复选框)");
        frame.addLeaf(checkBox);

        TreeLeaf textBoxRememberUsername = new TreeLeaf("TextBox(记住用户名)");
        frame.addLeaf(textBoxRememberUsername);

        TreeLeaf linkLabel = new TreeLeaf("LinkLabel(忘记密码)");
        frame.addLeaf(linkLabel);

        winForm.addLeaf(frame);
        winForm.show();
    }
}

print WinForm(WINDOW窗口)
print Picture(LOGO图片)
print BUTTON(登录)
print BUTTON(注册)
print Frame(FRAME1)
print LABEL(用户名)
print TextBox(文本框)
print Label(密码)
print PasswordBox(密码框)
print CheckBox(复选框)
print TextBox(记住用户名)
print LinkLabel(忘记密码)