Complex Number Gui Driver

*
 * Lu Liu
 * CSC-112 Intermediate Java Programming
 * FEB 18 2016
 * lliu0001@ student.stcc.edu
 *
 * Complex Numbers Gui Driver:
 * 1)test client;
 * 2)use method to generate two Complex Number a and b, and test them;
 * 3)operate Complex Number a and b;
 *
 * 4)method: generate Complex Number;
 * 5)method: test the methods: abs(), negate(), conjugate();
 */
package Complex;

import javax.swing.JOptionPane;

public class ComplexNumberGuiDriver {

    // test client
    public static void main(String[] args) {
        final String TITLE = "ComplexNumber Demo";
        JOptionPane.showMessageDialog(null, "Running " + TITLE + "\nHave Fun!!!", TITLE,
                JOptionPane.INFORMATION_MESSAGE);

        do {
            // generate two Complex Number a and b, and test them;
            JOptionPane.showMessageDialog(null, "Generate Complex Number 1: ", TITLE, JOptionPane.INFORMATION_MESSAGE);
            Complex a = generateComplexNumber();
            test(a);

            JOptionPane.showMessageDialog(null, "Generate Complex Number 2: ", TITLE, JOptionPane.INFORMATION_MESSAGE);
            Complex b = generateComplexNumber();
            test(b);

            // operate Complex Number a and b;
            Complex ans = null;
            String options[] = { "Add", "Subtract", "Multiply", "Divide", "Distance", "Compare", "Quit" };
            int option = JOptionPane.showOptionDialog(null, "Choose Operation", TITLE, JOptionPane.YES_NO_CANCEL_OPTION,
                    JOptionPane.PLAIN_MESSAGE, null, options, 4);
            String output = "";
            switch (option) {
            case 0:
                ans = a.add(b);
                output = " + ";
                break;
            case 1:
                ans = a.subtract(b);
                output = " - ";
                break;
            case 2:
                ans = a.multiply(b);
                output = " * ";
                break;
            case 3:
                ans = a.divide(b);
                output = " / ";
                break;
            default:
                break;
            }
            if (option == 4) {
                JOptionPane.showMessageDialog(null, a + " and " + b + " 's diatance = " + a.distance(b), TITLE,
                        JOptionPane.PLAIN_MESSAGE);
            } else if (option == 5) {
                if (a.equals(b))
                    JOptionPane.showMessageDialog(null, a + " is equals to " + b, TITLE, JOptionPane.PLAIN_MESSAGE);
                else if (a.greaterThan(b))
                    JOptionPane.showMessageDialog(null, a + " is greater than " + b, TITLE, JOptionPane.PLAIN_MESSAGE);
                else
                    JOptionPane.showMessageDialog(null, a + " is less than " + b, TITLE, JOptionPane.PLAIN_MESSAGE);

            } else if (option > 4)
                break;
            else {
                String sen = "(" + a + ")" + output + "(" + b + ") " + " = " + ans;
                JOptionPane.showMessageDialog(null, sen, TITLE, JOptionPane.PLAIN_MESSAGE);
            }

            // do this again?
            option = JOptionPane.showConfirmDialog(null, "Do you want to do this again?", TITLE,
                    JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);
            if (option != JOptionPane.YES_OPTION)
                break;
        } while (true);
    }

    // generate Complex Number
    public static Complex generateComplexNumber() {
        double real, imag;
        final String TITLE = "ComplexNumber Demo";
        String temp;
        temp = JOptionPane.showInputDialog(null, "Enter Real of Complex Number", TITLE,
                JOptionPane.INFORMATION_MESSAGE);
        if (temp == null)
            return null;
        real = Double.parseDouble(temp);

        temp = JOptionPane.showInputDialog(null, "Enter Imaginary Components of Complex Number", TITLE,
                JOptionPane.INFORMATION_MESSAGE);
        if (temp == null)
            return null;
        imag = Double.parseDouble(temp);
        Complex a = new Complex(real, imag);
        return a;
    }

    // test the methods: abs(), negate(), conjugate()
    public static void test(Complex a) {
        final String TITLE = "Test Complex Number";

        do {
            Complex ans1 = null;
            String options1[] = { "Negate", "Conjugate", "Abs", "Quit" };
            int option = JOptionPane.showOptionDialog(null, a.toString(), TITLE, JOptionPane.YES_NO_CANCEL_OPTION,
                    JOptionPane.PLAIN_MESSAGE, null, options1, 3);
            switch (option) {
            case 0:
                ans1 = a.negate();
                JOptionPane.showMessageDialog(null, a + "'s negation is " + ans1, TITLE, JOptionPane.PLAIN_MESSAGE);
                break;
            case 1:
                ans1 = a.conjugate();
                JOptionPane.showMessageDialog(null, a + "'s conjugate is " + ans1, TITLE, JOptionPane.PLAIN_MESSAGE);
                break;
            case 2:
                double dis = a.abs();
                JOptionPane.showMessageDialog(null, a + "'s distance is " + dis, TITLE, JOptionPane.PLAIN_MESSAGE);
                break;
            default:
                break;
            }
            if (option > 3)
                break;
            option = JOptionPane.showConfirmDialog(null, "Do you want test again?", TITLE, JOptionPane.YES_NO_OPTION,
                    JOptionPane.QUESTION_MESSAGE);
            if (option != JOptionPane.YES_OPTION)
                break;
        } while (true);
    }
}