//Reference P534 Deitel, H.M & Deitel, P.J. (2005), JAVATM HOW TO PROGRAM (SIXTH EDITION), Pearson International Edition, ISBN 0-13-129014-2.

import java.awt.GridLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.text.JTextComponent;

import javax.swing.SwingConstants; // common constants used with Swing


public class TempretureForm extends JFrame
{

private JButton ConvertToCelciusJButton;
private JButton ConvertToFahrenheitJButton;
private JButton exitJButton;
private JLabel TitleLabel;
public JLabel FahrenheitLabel;
private JLabel CelciusLabel;
private JLabel ConfirmationLabel;
private JLabel CelciuisValueLabel;
private JTextField UserInputTextField;
private GridLayout gridLayout;


public TempretureForm()
		{
			super ("This Application Aims to Convert from Fahrenheit to Celcius and Back");
			gridLayout = new GridLayout(3,3,3,3);
				setLayout (gridLayout);

				//creating buttons and textfields

				UserInputTextField = new JTextField("");
				add(UserInputTextField);
				TitleLabel = new JLabel("degrees fahrenheit");
				add(TitleLabel);
				ConvertToCelciusJButton = new JButton("Convert to Celcius");
				add(ConvertToCelciusJButton);
				FahrenheitLabel = new JLabel("");
				add(FahrenheitLabel);
				CelciusLabel = new JLabel("Celcius");
				add(CelciusLabel );
				ConvertToFahrenheitJButton = new JButton("Convert To Fahrenheit");
				add(ConvertToFahrenheitJButton);
				ConfirmationLabel = new JLabel("");
				add(ConfirmationLabel);
				CelciuisValueLabel = new JLabel("From C to Fahr");
				add(CelciuisValueLabel);
				exitJButton = new JButton("Exit");
				add(exitJButton);
				CelciuisValueLabel.setVisible(false);
				FahrenheitLabel.setVisible(false);
				CelciuisValueLabel.setVisible(false);
				ConvertToFahrenheitJButton.setVisible(false);


				//setting handler to perform tasks based on Button pressed.
				ButtonHandler handler = new ButtonHandler();
				ConvertToCelciusJButton.addActionListener(handler);
				ConvertToFahrenheitJButton.addActionListener(handler);
				exitJButton.addActionListener(handler);


		}


		private class ButtonHandler implements ActionListener
			{

			//Actions to be performed based on Button Pressed.
			public void actionPerformed (ActionEvent event)
				{


					//Getting User Input
					if (event.getActionCommand() == "Convert to Celcius")
							{


							String temptemp = UserInputTextField.getText();
							double temp = Double.parseDouble(temptemp);

							String type = "C";
							TempretureConversion myTempretureConversion = new TempretureConversion();


							double tempreture = myTempretureConversion.TheTempretureConversion(temp, type);


							FahrenheitLabel.setVisible(true);
							ConvertToFahrenheitJButton.setVisible(true);
							FahrenheitLabel.setText(Double.toString(tempreture));



							}
							// Short Address Button is clicked.
							else if (event.getActionCommand() == "Convert To Fahrenheit")
							{

							String temptemp = FahrenheitLabel.getText();
							double temp = Double.parseDouble(temptemp);
							String type = "F";
							TempretureConversion myTempretureConversion = new TempretureConversion();

							double tempreture = myTempretureConversion.TheTempretureConversion(temp, type);

							//JOptionPane.showMessageDialog(null, tempreture + " in degrees Fahrenheit:");
							CelciuisValueLabel.setVisible(true);
							ConfirmationLabel.setText(Double.toString(tempreture));


							}
							//Exit Button is Clicked

							else if (event.getActionCommand() == "Exit")
							{
							//Closes window
							dispose ();
							}


				}
			}

} //end of Class