/*******************************
* Name: Huy Nguyen             *
* Lab #2                       *
* Fall 1998, ICS 52            *
********************************/


// EA.java -- ICS 52 homework #2 -- Fall, 1998

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import SAO.*;

class LoginDialog extends Frame
{
    EAFrame parentFrame;
    boolean cancelled;
	public LoginDialog(EAFrame parentFrame)
	{
	    this.parentFrame = parentFrame;
		setLayout(null);
		setVisible(false);
		setSize(298,183);
		setResizable(false);
		setBackground(new Color(12632256));
		lblUser = new Label("User Name:");
		lblUser.setBounds(48,60,70,20);
		add(lblUser);
		lblPassword = new Label("Password:");
		lblPassword.setBounds(48,84,70,20);
		add(lblPassword);
		txtUser = new TextField();
		txtUser.setBounds(132,60,97,20);
		add(txtUser);
		txtPassword = new TextField();
		txtPassword.setBounds(132,84,97,20);
		txtPassword.setEchoCharacter('*');
		add(txtPassword);
		btnOK = new Button();
		btnOK.setLabel("OK");
		btnOK.setBounds(60,120,77,23);
		btnOK.setBackground(new Color(12632256));
		btnOK.addActionListener( new ButtonListener());
		add(btnOK);
		btnCancel = new Button();
		btnCancel.setLabel("Cancel");
		btnCancel.setBounds(144,120,77,23);
		btnCancel.setBackground(new Color(12632256));
		btnCancel.addActionListener( new ButtonListener());
		add(btnCancel);
		lblInstruction = new Label("Please Enter User Name and Password");
		lblInstruction.setBounds(36,24,228,22);
		add(lblInstruction);
		this.addWindowListener( new MyWindowAdapter() );
		cancelled = false;
		setVisible(true);
	}

	Label lblUser;
	Label lblPassword;
	TextField txtUser;
	TextField txtPassword;
	Button btnOK;
	Button btnCancel;
	Label lblInstruction;

	class MyWindowAdapter extends WindowAdapter
	{
		public void windowClosing(WindowEvent event)
		{
			dispose();
		}
	}
	class ButtonListener implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{
			Object object = event.getSource();
			if (object == btnCancel)
			{
			    cancelled = true;
			    parentFrame.setMenuBar( new StartMenuBar(parentFrame));
			    LoginDialog.this.dispose();
			}
			else if (txtPassword.equals(""))
			{
			    Attention a = new Attention( parentFrame, true, "Password cannot be null", true);
			    a.show();
			    return;
			}
			else if (txtUser.getText().equals( txtPassword.getText())) // or else
		    {
		        LoginDialog.this.dispose();
		    }
		    else
		    {
		        Attention a = new Attention( parentFrame, true, "Incorrect password. Try again", true);
		        a.show();
		        return;
		    }
		}
	}
	boolean wasNotCancelled()
	{
		return !cancelled;
	}
}