// 代理类,继承于抽象主题,此处用于验证输入合法性
package Proxy_Pattern;

import java.util.ArrayList;

public class Proxy implements Subject {
	RealSubject realSubject;
	String name;
	// 设置列表
	ArrayList<String> ponyList = new ArrayList<String>() {{
		add("Twilight Sparkle");
		add("Flutter Shy");
		add("Pinkie Pie");
		add("Apple Jack");
		add("Rarity");
		add("Rainbow Dash");
	}};
	
	Proxy(String name) {
		this.name = name;
	}
	
	public String getChineseName() {
		// 判断是否在列表中
		if (ponyList.contains(name)) {
			realSubject = new RealSubject(name);
			String chineseName = realSubject.getChineseName();
			return chineseName;
		}
		else
			return "null";
	}
}