/*
	This is a GUI atm program
	Pin is 111
	
*
*/

import javax.swing.*;
import java.awt.event.*;
import java.awt.*; // Needed for the layout class

public class GuiAtm extends JFrame
{
	JPanel numpanel;
	JPanel textpanel;
	JPanel mainpanel;
	JButton one;
	JButton two;
	JButton zero;
	JButton three;
	JButton four;
	JButton five;
	JButton six;
	JButton seven;
	JButton eight;
	JButton nine;
	JButton enter;
	JButton clear;
	JTextArea textarea;
	
   boolean value = true;
	
	public GuiAtm()
	{
		// Sets the title
		
		setTitle("Enter Pin Number");
		
		// Sets the size of the window
		
		setSize(300, 200);
		
		// Sets the location of the frame to middle
		
		setLocationRelativeTo(null);
		
		// Sets the action when the window is close
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		// Creates a text area
		
		textarea = new JTextArea("", 1, 15);
		
		// Create the number buttons
		
		zero = new JButton("0");
		one = new JButton("1");
		two = new JButton("2");
		three = new JButton("3");
		four = new JButton("4");
		five = new JButton("5");
		six = new JButton("6");
		seven = new JButton("7");
		eight = new JButton("8");
		nine = new JButton("9");
		enter = new JButton("Enter");
		clear = new JButton("Clear");
		
		// Create three panels
		
		mainpanel = new JPanel();
		numpanel = new JPanel();
		textpanel = new JPanel();
		
		// Add the text area to textpanel
		
		textpanel.add(textarea);
		
		// Sets the layout for the main panel
		
		mainpanel.setLayout(new BorderLayout());
		
		// Sets the layout for the number panel
		
		numpanel.setLayout(new FlowLayout(FlowLayout.CENTER));
		
		// Add the buttons to number panel
		
		numpanel.add(zero);
		numpanel.add(one);
		numpanel.add(two);
		numpanel.add(three);
		numpanel.add(four);
		numpanel.add(five);
		numpanel.add(six);
		numpanel.add(seven);
		numpanel.add(eight);
		numpanel.add(nine);
		numpanel.add(clear);
		numpanel.add(enter);
		
		// Adds textpanel and number panel to the main panel
		
		mainpanel.add(textpanel, BorderLayout.NORTH);
		mainpanel.add(numpanel, BorderLayout.CENTER);
		
		// Adds the main panel to the content pane
		
		add(mainpanel);
		
		// Create an event listener for the buttons
		
		zero.addActionListener(new ButtonListener());
		one.addActionListener(new ButtonListener());
		two.addActionListener(new ButtonListener());
		three.addActionListener(new ButtonListener());
		four.addActionListener(new ButtonListener());
		five.addActionListener(new ButtonListener());
		six.addActionListener(new ButtonListener());
		seven.addActionListener(new ButtonListener());
		eight.addActionListener(new ButtonListener());
		nine.addActionListener(new ButtonListener());
		enter.addActionListener(new ButtonListener());
		clear.addActionListener(new ButtonListener());
		
		
		// Set the visibility of the window
		
		setVisible(value);
		
	}
	
	public class ButtonListener implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			try
			{
				// Append texts to text area if a number button is clicked
				
				if(e.getSource( )== zero)
				{
					textarea.append("0");
					
				}
				if(e.getSource( )== one)
				{
					textarea.append("1");
					
				}
				if(e.getSource() == two)
				{
					textarea.append("2");
							
				}
				if(e.getSource() == three)
				{
					textarea.append("3");
					
				}
				if(e.getSource() == four)
				{
					textarea.append("4");
					
				}
				if(e.getSource() == five)
				{
					textarea.append("5");
					
				}
				if(e.getSource() == six)
				{
					textarea.append("6");
					
				}
				if(e.getSource() == seven)
				{
					textarea.append("7");
					
				}
				if(e.getSource() == eight)
				{
					textarea.append("8");
					
				}
				if(e.getSource() == nine)
				{
					textarea.append("9");
					
				}
		
				
				// Clears everything on the text area
				
				if(e.getSource() == clear)
				{
					textarea.setText("");
					
				}
				if(e.getSource()==enter)
				{
					// Convert the Strings into integer
					
					int num = Integer.parseInt(textarea.getText());
					
					/*
						If pin matches call the main atm class
						Then set the value to be false
						So the window would disappear
						With only the main atm class window appear
						
					*
					*/
		
					if(num==111)
					{
						value = false;
						setVisible(value);
						MainAtm matm = new MainAtm();
						
					}
					
					// If pin doesn't match ask the user to re-enter pin
					
					else
					{
						JOptionPane.showMessageDialog(null, "Pin does not match\n Please re-enter");
						
					}
				}
			}
			catch(NumberFormatException ae)
			{
			}		
		
		}
	}
	
	public static void main(String[] args)
	{
	   new GuiAtm();
	
	}
}