组件模式

package com.hy.learn.设计模式.组合模式;
import org.springframework.util.ObjectUtils;
import java.util.ArrayList;
import java.util.List;
/**
 * @program: learn
 * @description: 组合模式窗口
 * @author: hy
 * @create: 2020-10-04 21:38
 */
public  abstract class Component {
    public abstract void print();
    public abstract void add(Component c);
}
class nodeComponent extends Component {
    private String name;
    private List<Component> list;
    public nodeComponent(String name) {
        this.name = name;
    }
    @Override
    public void print() {
        System.out.println("print " + name);
        if (!ObjectUtils.isEmpty(list) ){
            for (Component component : list) {
                component.print();
            }
        }
    }
    @Override
    public void add(Component c) {
        if( ObjectUtils.isEmpty(list) ) {
            list = new ArrayList<>();
        }
        list.add(c);
    }
    public static void main(String[] args) {
        Component winForm = new nodeComponent("WinForm(WINDOW窗口)");
        Component picture = new nodeComponent("Picture(LOGO图片)");
        Component buttonLogin = new nodeComponent("Button(登录)");
        Component buttonRegister = new nodeComponent("Button(注册)");
        Component frame = new nodeComponent("Frame(FRAME1)");
        Component label1 = new nodeComponent("Label(用户名)");
        Component textBoxUserName = new nodeComponent("TextBox(文本框)");
        Component label2 = new nodeComponent("Lable(密码)");
        Component passwordBox = new nodeComponent("PassWordBox(密码框)");
        Component checkbox = new nodeComponent("CheckBox(复选框)");
        Component textBoxRemember = new nodeComponent("TextBox(记住用户名)");
        Component linkLabel = new nodeComponent("LinkLabel(忘记密码)");
        frame.add(label1);
        frame.add(textBoxUserName);
        frame.add(label2);
        frame.add(passwordBox);
        frame.add(checkbox);
        frame.add(textBoxRemember);
        frame.add(linkLabel);
        winForm.add(picture);
        winForm.add(buttonLogin);
        winForm.add(buttonRegister);
        winForm.add(frame);
        winForm.print();
    }
}