import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import jnpout32.pPort;

public class Parallel_port extends JFrame implements ActionListener
{

    private static final long serialVersionUID = 1592650574594238988L;

    JPanel panel;
    JTextField readval, writeval;
    JButton write, read;

    short datum;
    short Addr;
    pPort lpt = new pPort();



    Parallel_port()
    {
        Create_frame();
        setContentPane(panel);
    }

    short BinToHex(String bin)
    {
        long num = Long.parseLong(bin);
        long rem;
        while(num > 0){
            rem = num % 10;
            num = num / 10;
            if(rem != 0 && rem != 1)
            {
                System.exit(0);
            }
        }
        short i = (short) Integer.parseInt(bin,2);
        return i;
    }


    void do_write()
    {
        lpt.output(Addr,datum);
    }


    void Create_frame()
    {
        try{UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());}
        catch(Exception e){}


        panel = new JPanel();

        writeval = new JTextField("00000000");
        writeval.setBounds( 20, 50, 75, 18 );
        writeval.setEditable( true );
        panel.add(writeval);

        write = new JButton("Write");
        write.setBounds( 100, 50, 75, 18 );
        write.setActionCommand("Write");
        write.addActionListener(this);
        panel.add(write);

        readval = new JTextField("");
        readval.setBounds( 20, 70, 75, 18 );
        readval.setEditable( false );
        panel.add(readval);

        read = new JButton("Read");
        read.setBounds( 100, 70, 75, 18 );
        read.setActionCommand("Read");
        read.addActionListener(this);
        panel.add(read);

        panel.setLayout(null);
        panel.setSize(400, 300);
        panel.setBackground(Color.white);


        setContentPane(panel);
        setSize(400,300);
        setLocation(250,100);
        setResizable(false);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }



    public void actionPerformed(ActionEvent e)
    {
        String cmd = e.getActionCommand();
        if(cmd.equals("Write"))
        {
            String wrt = writeval.getText();;
            Addr=0x378;
            datum = BinToHex(wrt);
            do_write();
        }

        if(cmd.equals("Read"))
        {
            Addr=0x378;
            datum = (short) lpt.input(Addr);
            String hex_value = (Integer.toHexString(datum));

            int i = Integer.parseInt(hex_value);
            String by = Integer.toBinaryString(i);
            System.out.println("This is Binary: " + by);
            long num = Long.parseLong(hex_value,16);
            System.out.println("This is long:=" + num);
            //readval.setText();
        }

    }


    public static void main(String[] argv)
    {
        Parallel_port hello = new Parallel_port();
        hello.setVisible(true);
    }

}