/*
	author:		kkosak
	program:	PaintStore
	date:		december.2016
*/

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

public class PaintStore extends JFrame
{
	//declarations

	Color black = new Color(0, 0, 0);
	Color white = new Color(255, 255, 255);

	JRadioButton deluxePaintJRadioButton;
	JRadioButton premiumPaintJRadioButton;

	JLabel amountOfGallonsJLabel;
	JTextField amountOfGallonsJTextField;

	JLabel amountOfSalesTaxJLabel;
	JTextField amountOfSalesTaxJTextField;

	JLabel totalAmountJLabel;
	JTextField totalAmountJTextField;

	JButton enterJButton;
	JButton clearJButton;
	JButton closeJButton;

	final float DELUXE_PAINT = 24.95f;
	final float PREMIUM_PAINT = 34.95f;
	final float TAX_RATE = .07f;

	float amountOfGallons;
	float paintPrice;
	float salesTotal;
	float totalAmount;

	ButtonGroup displayButtonGroup;
	DecimalFormat decimalFormat;
	PaintCalculator paintCalculator;


		public PaintStore()
		{
			createUserInterface();
		}

		public void createUserInterface()
		{
		Container contentPane = getContentPane();
		contentPane.setBackground(white);
		contentPane.setLayout(null);

		displayButtonGroup = new ButtonGroup();

		deluxePaintJRadioButton = new JRadioButton();
		deluxePaintJRadioButton.setBounds(150, 20, 100, 20);
		deluxePaintJRadioButton.setText("Deluxe Paint $24.95");
		deluxePaintJRadioButton.setSelected(true);
		deluxePaintJRadioButton.setForeground(black);
		deluxePaintJRadioButton.setBackground(white);
		displayButtonGroup.add(deluxePaintJRadioButton);
		contentPane.add(deluxePaintJRadioButton);

		premiumPaintJRadioButton = new JRadioButton();
		premiumPaintJRadioButton.setBounds(250, 20, 100, 20);
		premiumPaintJRadioButton.setText("Premium Paint $34.95");
		premiumPaintJRadioButton.setSelected(false);
		premiumPaintJRadioButton.setForeground(black);
		premiumPaintJRadioButton.setBackground(white);
		displayButtonGroup.add(premiumPaintJRadioButton);
		contentPane.add(deluxePaintJRadioButton);

		amountOfGallonsJLabel = new JLabel();
		amountOfGallonsJLabel.setBounds(100, 50, 30, 20);
		amountOfGallonsJLabel.setFont(new Font("Default", Font.PLAIN, 12));
		amountOfGallonsJLabel.setText("Amount of Gallons");
		amountOfGallonsJLabel.setForeground(black);
		amountOfGallonsJLabel.setHorizontalAlignment(JLabel.LEFT);
		contentPane.add(amountOfGallonsJLabel);

		amountOfGallonsJTextField = new JTextField();
		amountOfGallonsJTextField.setBounds(170, 50, 50, 20);
		amountOfGallonsJTextField.setFont(new Font("Default", Font.PLAIN, 12));
		amountOfGallonsJTextField.setHorizontalAlignment(JTextField.CENTER);
		amountOfGallonsJTextField.setForeground(black);
		amountOfGallonsJTextField.setBackground(white);
		amountOfGallonsJTextField.setEditable(true);
		contentPane.add(amountOfGallonsJTextField);

		amountOfSalesTaxJLabel = new JLabel();
		amountOfSalesTaxJLabel.setBounds(100, 100, 30, 20);
		amountOfSalesTaxJLabel.setFont(new Font("Default", Font.PLAIN, 12));
		amountOfSalesTaxJLabel.setText("Amount of Sales Tax");
		amountOfSalesTaxJLabel.setForeground(black);
		amountOfSalesTaxJLabel.setHorizontalAlignment(JLabel.LEFT);
		contentPane.add(amountOfSalesTaxJLabel);

		amountOfSalesTaxJTextField = new JTextField();
		amountOfSalesTaxJTextField.setBounds(170, 100, 50, 20);
		amountOfSalesTaxJTextField.setFont(new Font("Default", Font.PLAIN, 12));
		amountOfSalesTaxJTextField.setHorizontalAlignment(JTextField.CENTER);
		amountOfSalesTaxJTextField.setForeground(black);
		amountOfSalesTaxJTextField.setBackground(white);
		amountOfSalesTaxJTextField.setEditable(false);
		contentPane.add(amountOfSalesTaxJTextField);

		totalAmountJLabel = new JLabel();
		totalAmountJLabel.setBounds(100, 150, 30, 20);
		totalAmountJLabel.setFont(new Font("Default", Font.PLAIN, 12));
		totalAmountJLabel.setText("Total Amount");
		totalAmountJLabel.setForeground(black);
		totalAmountJLabel.setHorizontalAlignment(JLabel.LEFT);
		contentPane.add(totalAmountJLabel);

		totalAmountJTextField = new JTextField();
		totalAmountJTextField.setBounds(170, 150, 50, 20);
		totalAmountJTextField.setFont(new Font("Default", Font.PLAIN, 12));
		totalAmountJTextField.setHorizontalAlignment(JTextField.CENTER);
		totalAmountJTextField.setForeground(black);
		totalAmountJTextField.setBackground(white);
		totalAmountJTextField.setEditable(false);
		contentPane.add(totalAmountJTextField);

		enterJButton = new JButton();
		enterJButton.setBounds(30, 300, 100, 20);
		enterJButton.setFont(new Font("Default", Font.PLAIN, 12));
		enterJButton.setText("Enter");
		enterJButton.setForeground(black);
		enterJButton.setBackground(white);
		contentPane.add(enterJButton);
		enterJButton.addActionListener(

			new ActionListener()
			{
				public void actionPerformed(ActionEvent event)
				{
					enterJButtonActionPerformed(event);
				}
			}
		);

		clearJButton = new JButton();
		clearJButton.setBounds(150, 300, 100, 20);
		clearJButton.setFont(new Font("Default", Font.PLAIN, 12));
		clearJButton.setText("Clear");
		clearJButton.setForeground(black);
		clearJButton.setBackground(white);
		contentPane.add(clearJButton);
		clearJButton.addActionListener(

			new ActionListener()
			{
				public void actionPerformed(ActionEvent event)
				{
					clearJButtonActionPerformed(event);
				}
			}
		);

		closeJButton = new JButton();
		closeJButton.setBounds(270, 300, 100, 20);
		closeJButton.setFont(new Font("Default", Font.PLAIN, 12));
		closeJButton.setText("Close");
		closeJButton.setForeground(black);
		closeJButton.setBackground(white);
		contentPane.add(clearJButton);
		clearJButton.addActionListener(

			new ActionListener()
			{
				public void actionPerformed(ActionEvent event)
				{
					closeJButtonActionPerformed(event);
				}
			}
		);

		setTitle("PaintStore");
		setSize(400, 400);
		setVisible(true);
		}

		public static void main (String[] args)
		{
			PaintStore application = new PaintStore();
			application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		}

		public void enterJButtonActionPerformed(ActionEvent event)
		{
			getAmountOfGallons();
		}

		public void getAmountOfGallons()
		{
			try
			{
				amountOfGallons = Float.parseFloat(amountOfGallonsJTextField.getText());
				numberOfGallonsNotZero();
			}

			catch(NumberFormatException exception)
			{
					JOptionPane.showMessageDialog(this,
					"Please enter a number greater than 0!",
					"Number Format Error", JOptionPane.ERROR_MESSAGE);
					amountOfGallonsJTextField.setText("");
					amountOfGallonsJTextField.requestFocusInWindow();
			}
		}

		public void numberOfGallonsNotZero()
		{
			if(amountOfGallons == 0)
			{
				JOptionPane.showMessageDialog(this,
				"Please enter a number greater than 0!",
				"Number Format Error", JOptionPane.ERROR_MESSAGE);
				amountOfGallonsJTextField.setText("");
				amountOfGallonsJTextField.requestFocusInWindow();
			}

			else
			{
				getTotalAmount();
			}
		}

		public void getTotalAmount()
		{
			if(deluxePaintJRadioButton.isSelected())
			{
				paintPrice = DELUXE_PAINT;
			}

			if(premiumPaintJRadioButton.isSelected())
			{
				paintPrice = PREMIUM_PAINT;
			}

			calculateTotalAmount();
		}

		public void calculateTotalAmount()
		{
			salesTotal = (amountOfGallons * paintPrice) * TAX_RATE;
			paintCalculator = new PaintCalculator(amountOfGallons, paintPrice);
			totalAmount = paintCalculator.getResults();
			displaySales();
		}

		public void displaySales()
		{
			decimalFormat = new DecimalFormat("$0.00");
			totalAmountJTextField.setText("" + decimalFormat.format(totalAmount));
		}

		public void clearJButtonActionPerformed()
		{
			amountOfGallonsJTextField.setText("");
			amountOfSalesTaxJTextField.setText("");
			totalAmountJTextField.setText("");
			amountOfGallonsJTextField.requestFocusInWindow();
			deluxePaintJRadioButton.setSelected(true);
		}

		public void closeJButtonActionPerformed()
		{
			PaintStore.this.dispose();
		}

}

class PaintCalculator
{
	float numberOne;
	float numberTwo;

	public PaintCalculator(float firstValue, float secondValue)
	{
		numberOne = firstValue;
		numberTwo = secondValue;
	}

	public float getResults()
	{
		return numberOne * numberTwo;
	}
}