public abstract class AbstractElement {
    protected String name;
    protected List<AbstractElement> subAbstractElements;
    public AbstractElement(String name) {
        this.name = name;
    }
    public final void print() {
        this.doPrint();
        if (CollectionUtils.isNotEmpty(subAbstractElements)) {
            for (AbstractElement subAbstractElement : subAbstractElements) {
                subAbstractElement.print();
            }
        }
    }
    protected abstract void doPrint();
}

public class WinFrom extends AbstractElement {
    public WinFrom(String name) {
        super(name);
        this.subAbstractElements = new LinkedList<>();
    }
    public void addSubElement(AbstractElement abstractElement) {
        this.subAbstractElements.add(abstractElement);
    }
    @Override
    protected void doPrint() {
        System.out.println("print WinFrom(" + this.name + ")");
    }
}

public class Picture extends AbstractElement {
    public Picture(String name) {
        super(name);
    }
    @Override
    protected void doPrint() {
        System.out.println("print Picture(" + this.name + ")");
    }
}

public class Button extends AbstractElement {
    public Button(String name) {
        super(name);
    }
    @Override
    protected void doPrint() {
        System.out.println("print Button(" + this.name + ")");
    }
}

public class Frame extends AbstractElement {
    public Frame(String name) {
        super(name);
        this.subAbstractElements = new LinkedList<>();
    }
    public void addSubElement(AbstractElement abstractElement) {
        this.subAbstractElements.add(abstractElement);
    }
    @Override
    protected void doPrint() {
        System.out.println("print Frame(" + this.name + ")");
    }
}

public class Label extends AbstractElement {
    public Label(String name) {
        super(name);
    }
    @Override
    protected void doPrint() {
        System.out.println("print Label(" + this.name + ")");
    }
}

public class TextBox extends AbstractElement {
    public TextBox(String name) {
        super(name);
    }
    @Override
    protected void doPrint() {
        System.out.println("print TextBox(" + this.name + ")");
    }
}

public class PasswordBox extends AbstractElement {
    public PasswordBox(String name) {
        super(name);
    }
    @Override
    protected void doPrint() {
        System.out.println("print PasswordBox(" + this.name + ")");
    }
}

public class CheckBox extends AbstractElement {
    public CheckBox(String name) {
        super(name);
    }
    @Override
    protected void doPrint() {
        System.out.println("print CheckBox(" + this.name + ")");
    }
}

public class LinkLabel extends AbstractElement {
    public LinkLabel(String name) {
        super(name);
    }
    @Override
    protected void doPrint() {
        System.out.println("print LinkLabel(" + this.name + ")");
    }
}

public class Demo {
    public static void main(String[] args) {
        WinFrom window = new WinFrom("WINDOW窗口");
        Picture logo = new Picture("LOGO图片");
        Frame frame = new Frame("FRAME1");
        Button loginBtn = new Button("登录");
        Button registerBtn = new Button("注册");
        window.addSubElement(logo);
        window.addSubElement(loginBtn);
        window.addSubElement(registerBtn);
        window.addSubElement(frame);
        Label userNameLabel = new Label("用户名");
        Label passwordLabel = new Label("密码");
        TextBox userNameTextBox = new TextBox("文本框");
        PasswordBox password = new PasswordBox("密码框");
        CheckBox checkBox = new CheckBox("复选框");
        TextBox remember = new TextBox("记住用户名");
        LinkLabel linkLabel = new LinkLabel("忘记密码");
        frame.addSubElement(userNameLabel);
        frame.addSubElement(userNameTextBox);
        frame.addSubElement(passwordLabel);
        frame.addSubElement(password);
        frame.addSubElement(checkBox);
        frame.addSubElement(remember);
        frame.addSubElement(linkLabel);
        window.print();
    }
}