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

public class PostalGUI extends JFrame implements ActionListener {
    
    private JLabel lblZip;
    private JTextField txtZip;
    private JButton btnZip;
    private JPanel pnlZip;
    
    private PostalBarCode barCode;
    private int table[][];
    private int ZIPcode;
    
    /**
     * Answers a PostalFrame object to create a simple GUI
     * to produce a postal bar code for the user's zip code
     **/
    public PostalGUI() {
        
        setSize(280,125);
        setLocation(100,100);
        
        lblZip  = new JLabel("Zip Code:");
        txtZip  = new JTextField(7);
        btnZip  = new JButton("Bar Code");
        
        pnlZip  = new JPanel();
        pnlZip.add(lblZip);
        pnlZip.add(txtZip);
        pnlZip.add(btnZip);
        
        btnZip.addActionListener(this);
        
        Container c = getContentPane();
        c.add(pnlZip, BorderLayout.NORTH);
        
        barCode = new PostalBarCode();
        
        c.add(barCode, BorderLayout.CENTER);
        
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible(true);
        
        
        table = new int[10][5];
        initTable();
        
    }
    
        /*  Extract the individual digits stored in the ZIP code
         *  and store their values as private data
         */
    private void extractDigits() {
        barCode.clearCode();
        
        
        
        
        
        
    }
    
        /*  Calculate correction digit and draw it
         *  ...used by actionPerformed
         */
    private void calculateAndDrawCDigit() {
        
        
        
        
        
        
    }
    
    
        /*  Retrieve the value (zero or one)
         *  stored in the ith row and jth column
         *  of the ZIP code table
         *  @param int i   ith row
         *         int j   jth column
         *  @return zero or one  as an integer
         */
    private int getValue(int i, int j) {
        return table[i][j];
    }
    
       /*  Draw the bar code for the zip code
        *  using the drawSmallBar and drawFullBar methods provided
        *  in PostalBarCode object
        *  ...invoked from actionPerformed()
        */
    
    private void drawZIPCode() {
        
        
        
        
        
        
    }
    
    
    public void actionPerformed(ActionEvent e) {
        String zipcode = new String();
        
        if (e.getSource() == btnZip) {
            // take text from textfield and trim off any
            // whitespace at either end
            zipcode = txtZip.getText().trim();
            
            if (zipcode.length() == 5) {
                ZIPcode = Integer.parseInt(zipcode);
                extractDigits(); //5 digits
                drawZIPCode(); // use the PostalBarCode object
                //  to draw a full or half
                //  bar for each digit
                
                calculateAndDrawCDigit(); //calculate and
                //draw the the check digit
            }
        }
    }
    
    private void initTable() {
        
        table[0][0] = 1;
        table[0][1] = 1;
        table[0][2] = 0;
        table[0][3] = 0;
        table[0][4] = 0;
        
        table[1][0] = 0;
        table[1][1] = 0;
        table[1][2] = 0;
        table[1][3] = 1;
        table[1][4] = 1;
        
        table[2][0] = 0;
        table[2][1] = 0;
        table[2][2] = 1;
        table[2][3] = 0;
        table[2][4] = 1;
        
        table[3][0] = 0;
        table[3][1] = 0;
        table[3][2] = 1;
        table[3][3] = 1;
        table[3][4] = 0;
        
        table[4][0] = 0;
        table[4][1] = 1;
        table[4][2] = 0;
        table[4][3] = 0;
        table[4][4] = 1;
        
        table[5][0] = 0;
        table[5][1] = 1;
        table[5][2] = 0;
        table[5][3] = 1;
        table[5][4] = 0;
        
        table[6][0] = 0;
        table[6][1] = 1;
        table[6][2] = 1;
        table[6][3] = 0;
        table[6][4] = 0;
        
        table[7][0] = 1;
        table[7][1] = 0;
        table[7][2] = 0;
        table[7][3] = 0;
        table[7][4] = 1;
        
        table[8][0] = 1;
        table[8][1] = 0;
        table[8][2] = 0;
        table[8][3] = 1;
        table[8][4] = 0;
        
        table[9][0] = 1;
        table[9][1] = 0;
        table[9][2] = 1;
        table[9][3] = 0;
        table[9][4] = 0;
        
        
    }
    
    
    public static void main(String [] args)  {
        PostalGUI gui = new PostalGUI();
    }
}