import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;


class MainClass extends JFrame implements ActionListener
{//定義了一個圖形用戶界面主要有標簽,文本框,按鈕幾大類

	JLabel NO=new JLabel("請輸入您的學號：");
	JLabel Pwd=new JLabel("請輸入您的密碼：");
	JTextField NOin=new JTextField();
	JPasswordField Pwdin=new JPasswordField();
	JButton OK=new JButton("確定");
	JButton Cancel=new JButton("清除");
        Font ZiTi=new Font("TimesRoman",Font.BOLD,15), ZiTi1=new Font("TimesRoman",Font.ITALIC,15);   //設置字體

	MainClass()
	{
		super("學生信息系統");
		Container c=getContentPane();
		c.setLayout(new GridLayout(3,2));
		c.add(NO);
		c.add(NOin);
		c.add(Pwd);
		c.add(Pwdin);
		Pwdin.setEchoChar('*');
		c.add(OK);
		c.add(Cancel);

		OK.addActionListener(this);//事件監聽
		Cancel.addActionListener(this);

		NO.setBounds(150,50,100,40);//設置各部件的位置
		Pwd.setBounds(150,100,100,40);
		NOin.setBounds(200,50,150,40);
		Pwdin.setBounds(200,100,150,40);//
		OK.setBounds(100,250,100,40);
		Cancel.setBounds(280,250,100,40);
                OK.setFont(ZiTi1);//設置字體
                Cancel.setFont(ZiTi1);
                NO.setFont(ZiTi1);
                NOin.setFont(ZiTi1);
                Pwd.setFont(ZiTi1);
                Pwdin.setFont(ZiTi1);

                setSize(300,200);//設置窗口大小
                setVisible(true);
                setResizable(false);

		show();
	}
public void actionPerformed(ActionEvent e)
	{//ActionListener接口
		if(e.getSource()==OK)//比較用戶的輸入學號和密碼,確定是否合法
		{
			Mima m=new Mima();  //創建Mima類對象
			if((m.getNo()==Integer.parseInt(NOin.getText()))&((m.getPassword()==Integer.parseInt(Pwdin.getText()))))
		    {
				Student x=Xinxi.stu.access((Integer.parseInt(NOin.getText())),(Integer.parseInt(Pwdin.getText())));
				JOptionPane.showMessageDialog(null,"登陸成功");
				dispose();
				new MainFrame();//調用frame類
			}
			else
			{
				JOptionPane.showMessageDialog(null,"密碼錯誤!!!");//密碼錯誤，彈出提示對話框
			    Pwdin.setText("");
			}
		}
	    else
		{
			NOin.setText("");
			Pwdin.setText("");//置空
		}
	}
}