package com.ocean;

/** * 抽象构件 */public abstract class Component {
    protected String name;
    public Component(String name){        this.name = name;    }
    public abstract void print();
    @Override    public boolean equals(Object o) {        if (this == o) return true;        if (o == null || getClass() != o.getClass()) return false;        Component component = (Component) o;        return name.equals(component.name);    }
    @Override    public int hashCode() {        return Objects.hash(name);    }}

package com.ocean;
import java.util.*;
/** * 树枝构件 */public class Composite extends Component {
    public Composite(String name) {        super(name);    }
    /**     * 构件容器     */    private Set<Component> components = new LinkedHashSet<>();
    /**     * 增加一个叶子构件或分支构件     * @param component     */    public void add(Component component){        this.components.add(component);    }
    public void remove(Component component){        this.components.remove(component);    }
    public Set<Component> getChilden(){        return this.components;    }
    @Override    public void print() {        System.out.println("print " + this.name);        for(Component c : this.getChilden()){            c.print();        }    }}

package com.ocean;
/** * 树叶构件 */public class Leaf extends Component {
    public Leaf(String name) {        super(name);    }
    @Override    public void print() {        System.out.println("print " + this.name);    }}

package com.ocean;
public class Client {
    public static void main(String[] args) {        Composite window =  createWindow();        print(window);    }
    public static Composite createWindow(){        Composite root = new Composite("WinForm(WINDOW窗口)");
        root.add(new Composite("Picture(LOGO图片)"));        root.add(new Leaf("Button(登录)"));        root.add(new Leaf("Button(注册)"));
        Composite formGroup = new Composite("Frame(FRAME1)");        formGroup.add(new Leaf("Label(用户名)"));        formGroup.add(new Leaf("TextBox(文本框)"));        formGroup.add(new Leaf("Label(密码)"));        formGroup.add(new Leaf("PasswordBox(密码框)"));        formGroup.add(new Leaf("CheckBox(复选框)"));        formGroup.add(new Leaf("TextBox(记住用户名)"));        formGroup.add(new Leaf("Label(忘记密码)"));        root.add(formGroup);

        return root;    }        public static void print(Composite composite){        composite.print();    }}