package calculator;

import java.awt.EventQueue;

import javax.swing.JFrame;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JTextField;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.SwingConstants;
import java.awt.Font;
import java.awt.Color;

public class CalculatorGUI {

	private JFrame frame;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					CalculatorGUI window = new CalculatorGUI();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	DisplayBean displayBean;
	private Double result = 0.0;
	private Double newOperand = 0.0;
	private String operationType = "";

	/**
	 * Create the application.
	 */
	public CalculatorGUI() {
		initialize();
	}

	void addNumber(int i) {
		displayBean.setValue(displayBean.getValue() + i);
	}

	void applyOperation() {
		newOperand = Double.parseDouble(displayBean.getValue());
		switch (operationType) {
		case "+":
			result = result + newOperand;
			break;
		case "-":
			result = result - newOperand;
			break;
		case "/":
			result = result / newOperand;
			break;
		case "*":
			result = result * newOperand;
			break;
		default:
			;
		}
		newOperand = 0.0;
		operationType = "";
		displayBean.setValue(result + "");
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame();
		frame.setBounds(100, 100, 199, 181);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		GridBagLayout gridBagLayout = new GridBagLayout();
		gridBagLayout.columnWidths = new int[] { 44, 44, 44, 44, 0 };
		gridBagLayout.rowHeights = new int[] { 27, 27, 27, 27, 27, 0 };
		gridBagLayout.columnWeights = new double[] { 1.0, 0.0, 0.0, 0.0,
				Double.MIN_VALUE };
		gridBagLayout.rowWeights = new double[] { 0.0, 0.0, 0.0, 0.0, 1.0,
				Double.MIN_VALUE };
		frame.getContentPane().setLayout(gridBagLayout);

		JButton btnNewButton = new JButton("1");
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				addNumber(1);
			}
		});
		GridBagConstraints gbc_btnNewButton = new GridBagConstraints();
		gbc_btnNewButton.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton.gridx = 0;
		gbc_btnNewButton.gridy = 1;
		frame.getContentPane().add(btnNewButton, gbc_btnNewButton);

		JButton btnNewButton_1 = new JButton("2");
		btnNewButton_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(2);
			}
		});
		GridBagConstraints gbc_btnNewButton_1 = new GridBagConstraints();
		gbc_btnNewButton_1.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_1.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_1.gridx = 1;
		gbc_btnNewButton_1.gridy = 1;
		frame.getContentPane().add(btnNewButton_1, gbc_btnNewButton_1);

		JButton btnNewButton_2 = new JButton("3");
		btnNewButton_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(3);
			}
		});
		GridBagConstraints gbc_btnNewButton_2 = new GridBagConstraints();
		gbc_btnNewButton_2.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_2.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_2.gridx = 2;
		gbc_btnNewButton_2.gridy = 1;
		frame.getContentPane().add(btnNewButton_2, gbc_btnNewButton_2);

		JButton btnNewButton_3 = new JButton("+");
		btnNewButton_3.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				operationType = "+";
				result = Double.parseDouble(displayBean.getValue());
				displayBean.setValue("");
			}
		});
		GridBagConstraints gbc_btnNewButton_3 = new GridBagConstraints();
		gbc_btnNewButton_3.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_3.insets = new Insets(0, 0, 5, 0);
		gbc_btnNewButton_3.gridx = 3;
		gbc_btnNewButton_3.gridy = 1;
		frame.getContentPane().add(btnNewButton_3, gbc_btnNewButton_3);

		JButton btnNewButton_4 = new JButton("4");
		btnNewButton_4.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(4);

			}
		});
		GridBagConstraints gbc_btnNewButton_4 = new GridBagConstraints();
		gbc_btnNewButton_4.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_4.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_4.gridx = 0;
		gbc_btnNewButton_4.gridy = 2;
		frame.getContentPane().add(btnNewButton_4, gbc_btnNewButton_4);

		JButton btnNewButton_5 = new JButton("5");
		btnNewButton_5.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(5);

			}
		});
		GridBagConstraints gbc_btnNewButton_5 = new GridBagConstraints();
		gbc_btnNewButton_5.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_5.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_5.gridx = 1;
		gbc_btnNewButton_5.gridy = 2;
		frame.getContentPane().add(btnNewButton_5, gbc_btnNewButton_5);

		JButton btnNewButton_6 = new JButton("6");
		btnNewButton_6.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(6);

			}
		});
		GridBagConstraints gbc_btnNewButton_6 = new GridBagConstraints();
		gbc_btnNewButton_6.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_6.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_6.gridx = 2;
		gbc_btnNewButton_6.gridy = 2;
		frame.getContentPane().add(btnNewButton_6, gbc_btnNewButton_6);

		JButton btnNewButton_7 = new JButton("-");
		btnNewButton_7.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				operationType = "-";
				result = Double.parseDouble(displayBean.getValue());
				displayBean.setValue("");
			}
		});
		GridBagConstraints gbc_btnNewButton_7 = new GridBagConstraints();
		gbc_btnNewButton_7.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_7.insets = new Insets(0, 0, 5, 0);
		gbc_btnNewButton_7.gridx = 3;
		gbc_btnNewButton_7.gridy = 2;
		frame.getContentPane().add(btnNewButton_7, gbc_btnNewButton_7);

		JButton btnNewButton_8 = new JButton("7");
		btnNewButton_8.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(7);

			}
		});
		GridBagConstraints gbc_btnNewButton_8 = new GridBagConstraints();
		gbc_btnNewButton_8.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_8.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_8.gridx = 0;
		gbc_btnNewButton_8.gridy = 3;
		frame.getContentPane().add(btnNewButton_8, gbc_btnNewButton_8);

		JButton btnNewButton_9 = new JButton("8");
		btnNewButton_9.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(8);

			}
		});
		GridBagConstraints gbc_btnNewButton_9 = new GridBagConstraints();
		gbc_btnNewButton_9.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_9.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_9.gridx = 1;
		gbc_btnNewButton_9.gridy = 3;
		frame.getContentPane().add(btnNewButton_9, gbc_btnNewButton_9);

		JButton btnNewButton_10 = new JButton("9");
		btnNewButton_10.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(9);

			}
		});
		GridBagConstraints gbc_btnNewButton_10 = new GridBagConstraints();
		gbc_btnNewButton_10.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_10.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_10.gridx = 2;
		gbc_btnNewButton_10.gridy = 3;
		frame.getContentPane().add(btnNewButton_10, gbc_btnNewButton_10);

		JButton btnNewButton_11 = new JButton("*");
		btnNewButton_11.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				operationType = "*";
				result = Double.parseDouble(displayBean.getValue());
				displayBean.setValue("");
			}
		});
		GridBagConstraints gbc_btnNewButton_11 = new GridBagConstraints();
		gbc_btnNewButton_11.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_11.insets = new Insets(0, 0, 5, 0);
		gbc_btnNewButton_11.gridx = 3;
		gbc_btnNewButton_11.gridy = 3;
		frame.getContentPane().add(btnNewButton_11, gbc_btnNewButton_11);

		JButton btnNewButton_12 = new JButton("0");
		btnNewButton_12.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				addNumber(0);

			}
		});
		GridBagConstraints gbc_btnNewButton_12 = new GridBagConstraints();
		gbc_btnNewButton_12.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_12.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_12.gridx = 0;
		gbc_btnNewButton_12.gridy = 4;
		frame.getContentPane().add(btnNewButton_12, gbc_btnNewButton_12);

		JButton btnNewButton_13 = new JButton("=");
		btnNewButton_13.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				applyOperation();
			}
		});
		GridBagConstraints gbc_btnNewButton_13 = new GridBagConstraints();
		gbc_btnNewButton_13.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_13.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_13.gridx = 1;
		gbc_btnNewButton_13.gridy = 4;
		frame.getContentPane().add(btnNewButton_13, gbc_btnNewButton_13);

		JButton btnNewButton_14 = new JButton("C");
		btnNewButton_14.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				result = 0.0;
				newOperand = 0.0;
				operationType = "";
			}
		});
		GridBagConstraints gbc_btnNewButton_14 = new GridBagConstraints();
		gbc_btnNewButton_14.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_14.insets = new Insets(0, 0, 5, 5);
		gbc_btnNewButton_14.gridx = 2;
		gbc_btnNewButton_14.gridy = 4;
		frame.getContentPane().add(btnNewButton_14, gbc_btnNewButton_14);

		JButton btnNewButton_15 = new JButton("/");
		btnNewButton_15.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				operationType = "/";
				result = Double.parseDouble(displayBean.getValue());
				displayBean.setValue("");
			}
		});
		GridBagConstraints gbc_btnNewButton_15 = new GridBagConstraints();
		gbc_btnNewButton_15.fill = GridBagConstraints.BOTH;
		gbc_btnNewButton_15.insets = new Insets(0, 0, 5, 0);
		gbc_btnNewButton_15.gridx = 3;
		gbc_btnNewButton_15.gridy = 4;
		frame.getContentPane().add(btnNewButton_15, gbc_btnNewButton_15);

		displayBean = new DisplayBean();
		displayBean.setForeground(Color.WHITE);
		displayBean.setLength(20);
		displayBean.setBackground(Color.BLACK);
		GridBagConstraints gbc_displayBean = new GridBagConstraints();
		gbc_displayBean.gridwidth = 4;
		gbc_displayBean.insets = new Insets(0, 0, 0, 5);
		gbc_displayBean.fill = GridBagConstraints.BOTH;
		gbc_displayBean.gridx = 0;
		gbc_displayBean.gridy = 0;
		frame.getContentPane().add(displayBean, gbc_displayBean);
	}

}