package demo;

import java.awt.Font;

//======初始登录界面=====//

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class Login{
	JFrame frame=new JFrame("排课系统");
	JLabel l1=new JLabel("请选择您的身份！");
	JButton st=new JButton("学生");
	JButton te=new JButton("老师");
	JButton ad=new JButton("管理员");
	JButton ex=new JButton("退出系统");
	
	public Login() {//设置界面
		frame.setSize(400,300);
		frame.setLocation(500,200);
		frame.setLayout(null);
		
		frame.setFont(new Font("宋体",Font.BOLD,15));
		//Font font=new Font("隶书",Font.BOLD,30);
		l1.setBounds(120,20,200,20);//（x,y,宽,高）
		frame.add(l1);
		
		//按钮
		st.setBounds(110,40,120,40);
		frame.add(st);
		te.setBounds(110,90,120,40);
		frame.add(te);
		ad.setBounds(110, 140,120, 40);
		frame.add(ad);
		ex.setBounds(110,190,120,40);
		frame.add(ex);
		
		//动作事件
		st.addActionListener(new ActionListener() {//跳转学生界面
			@Override
			public void actionPerformed(ActionEvent arg0) {
				new Student();
				frame.setVisible(false);
			}
		});
		te.addActionListener(new ActionListener() {//跳转老师界面
			@Override
			public void actionPerformed(ActionEvent e) {
				new Teacher();
				frame.setVisible(false);
			}
		});
		ad.addActionListener(new ActionListener() {//跳转管理员界面
			@Override
			public void actionPerformed(ActionEvent e) {
				new Administrator();
				frame.setVisible(false);
			}
		});
		ex.addActionListener(new ActionListener() {

			@Override
			public void actionPerformed(ActionEvent e) {
				JOptionPane.showMessageDialog(null, "系统被关闭","警告", 2);
				System.exit(1);
			}
			
		});
		
		frame.setVisible(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}


	public static void main(String [] arge) {
		new Login();
	}

}