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

/**************************************
 *GUI for totaling a series of numbers.
 **************************************/
public class FahrenCelSwingProg extends JFrame implements ActionListener
{
    public static final int WIDTH = 400;
    public static final int HEIGHT = 200;

    //private JTextField inputOutputField;
    private JTextField inputField;
    private JTextField outputField;
    private JTextField inputField2;
    private JTextField outputField2;
    private JTextField inputField3;
    private JTextField outputField3;
    private double sum = 0;
    private double sum2 = 1;
    private double sum3 = 1;

    public static void main(String[] args)
    {
        FahrenCelSwingProg guiAdder = new FahrenCelSwingProg();
        guiAdder.setVisible(true);
    }

    public FahrenCelSwingProg()
    {
        setTitle("Converting Machine");
        addWindowListener(new WindowDestroyer());
        setSize(WIDTH, HEIGHT);
        Container contentPane = getContentPane();
        contentPane.setLayout(new GridLayout(2,3));

        JPanel farePanel = new JPanel();
        farePanel.setBackground(Color.blue);
        farePanel.setLayout(new BorderLayout());


        JPanel textPanel = new JPanel();
        textPanel.setBackground(Color.yellow);
        textPanel.setLayout(new GridLayout());

        inputField = new JTextField();
        inputField.setBackground(Color.white);
        textPanel.add(inputField);


        outputField=new JTextField();
        outputField.setBackground(Color.lightGray);
        textPanel.add(outputField);

        JPanel buttonPanel2 = new JPanel();
        buttonPanel2.setBackground(Color.gray);
        buttonPanel2.setLayout(new FlowLayout());
        JButton multiplyButton = new JButton("Multiply");
        multiplyButton.addActionListener(this);
        buttonPanel2.add(multiplyButton);
        JButton resetButton2 = new JButton("ResetMultiply");
        resetButton2.addActionListener(this);
        buttonPanel2.add(resetButton2);
        contentPane.add(buttonPanel2, BorderLayout.SOUTH);

        JPanel textPanel2 = new JPanel();
        textPanel2.setBackground(Color.blue);
        textPanel2.setLayout(new GridLayout());

        inputField2 = new JTextField();
        inputField2.setBackground(Color.white);
        textPanel2.add(inputField2);


        outputField2=new JTextField();
        outputField2.setBackground(Color.lightGray);
        textPanel2.add(outputField2);

        JPanel buttonPanel3 = new JPanel();
        buttonPanel3.setBackground(Color.gray);
        buttonPanel3.setLayout(new FlowLayout());
        JButton divideButton = new JButton("Divide");
        divideButton.addActionListener(this);
        buttonPanel3.add(divideButton);
        JButton resetButton3 = new JButton("ResetDivide");
        resetButton3.addActionListener(this);
        buttonPanel3.add(resetButton3);
        contentPane.add(buttonPanel3, BorderLayout.SOUTH);

        JPanel textPanel3 = new JPanel();
        textPanel3.setBackground(Color.cyan);
        textPanel3.setLayout(new GridLayout());

        inputField3 = new JTextField();
        inputField3.setBackground(Color.white);
        textPanel3.add(inputField3);


        outputField3=new JTextField();
        outputField3.setBackground(Color.lightGray);
        textPanel3.add(outputField3);




    }

    public void actionPerformed(ActionEvent e)
    {
        if (e.getActionCommand().equals("Add"))
        {
            sum = sum +
                stringToDouble(inputField.getText());
            outputField.setText(Double.toString(sum));
        }
        else if (e.getActionCommand().equals("Multiply"))
        {
            sum2 = sum2 *
                stringToDouble(inputField2.getText());
            outputField2.setText(Double.toString(sum2));
        }
        else if (e.getActionCommand().equals("Divide"))
        {
            sum3 = sum3 /
                stringToDouble(inputField2.getText());
            outputField3.setText(Double.toString(sum3));
        }
        else if (e.getActionCommand().equals("Reset"))
        {
            sum = 0;
            outputField.setText("0.0");
        }
        else if (e.getActionCommand().equals("ResetMultiply"))
        {
            sum2 = 0;
            outputField2.setText("0.0");
        }
        else if (e.getActionCommand().equals("ResetDivide"))
        {
            sum3 = 0;
            outputField3.setText("0.0");
        }
        else
        {
            outputField.setText("Error in adder code.");
            outputField2.setText("Error in adder code.");
            outputField3.setText("Error in adder code.");
        }

     }

    private static double stringToDouble(String stringObject)
    {
        return Double.parseDouble(stringObject.trim());
    }




}