package com.ciash.bms.gui.menu.event;

import com.ciash.bms.observer.UserLoginObserver;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

/**
 * 事件驅動，該類實例將驅動一個事件產生，并通知觀察者，實現了登陸操作
 */
public class LoginListener
implements ActionListener {

    public final static String LOGIN = "用戶登陸";

    public static final String QUIT = "用戶退出";

    private UserLoginObserver userLoginObserver;

    public LoginListener(){
        setLoginOberserver(null);
    }

    public LoginListener(UserLoginObserver userLoginObserver) {
        setLoginOberserver(userLoginObserver);
    }

    public void actionPerformed(ActionEvent e) {
        if(userLoginObserver != null){
            String command = e.getActionCommand();
            if(command.equals(QUIT)){
                userLoginObserver.quit();
            }
            else if(command.equals(LOGIN)){
                userLoginObserver.login();
            }
        }
    }

    public UserLoginObserver getLoginObserver() {
        return userLoginObserver;
    }

    public void setLoginOberserver(UserLoginObserver userLoginObserver) {
        this.userLoginObserver = userLoginObserver;
    }
}