package com.qiangjun;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
 * 窗口元素
 *
 * @author leven
 */
public class WindowElement {
    /**
     * 元素名称
     */
    private String name;
    /**
     * 元素类型
     */
    private String type;
    /**
     * 子元素
     */
    private List<WindowElement> children;
    public WindowElement(String name, String type) {
        this.name = name;
        this.type = type;
        children = new ArrayList<>();
    }
    public void addWindowElement(WindowElement windowElement) {
        this.children.add(windowElement);
    }
    public void addWindowElements(WindowElement... windowElement){
        this.children.addAll(Arrays.asList(windowElement));
    }
    public List<WindowElement> getChildren() {
        return this.children;
    }
    public String print() {
        return "print " + this.type + "(" + this.name + ")";
    }
}

package com.qiangjun;
/**
 * 组合模式
 * @author leven
 */
public class CompositePatternDemo {
    public static void main(String[] args) {
        // create some windowElement
        WindowElement winForm = new WindowElement("window窗口","WinForm");
        WindowElement picture = new WindowElement("LOGO图片","Picture");
        WindowElement login = new WindowElement("登录","Button");
        WindowElement register = new WindowElement("注册","Button");
        WindowElement frame = new WindowElement("FRAME1","Frame");
        WindowElement username = new WindowElement("用户名","Label");
        WindowElement textBox = new WindowElement("文本框","TextBox");
        WindowElement passwordLabel = new WindowElement("密码","Label");
        WindowElement passwordBox = new WindowElement("密码框","PasswordBox");
        WindowElement checkBox = new WindowElement("复选框","CheckBox");
        WindowElement remember = new WindowElement("记住用户名","TextBox");
        WindowElement forgotPassword = new WindowElement("忘记密码","LinkLabel");
        // set children
        winForm.addWindowElements(picture,login,register,frame);
        frame.addWindowElements(username,textBox,passwordLabel,passwordBox,checkBox,remember,forgotPassword);
        //print window
        System.out.println(winForm.print());
        for (WindowElement windowElement : winForm.getChildren()) {
            System.out.println(windowElement.print());
            windowElement.getChildren().forEach(element -> {
                System.out.println(element.print());
            });
        }
    }
}