/*
* File name: GUIHomework.java
*
* Programmer: Jarrod Jablonski
* ULID: jtjablo
*
* Date: Nov 16, 2017
*
* Class: IT 178
* Lecture Section: 001
* Lecture Instructor: Patricia Matsuda
*/
package jrom36;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

/**
 * <a program that will allow the user to enter a length and width of a
 * rectangle and will return the area and perimeter in a JFrame>
 *
 * @author Jarrod Jablonski
 *
 */
public class hw extends JFrame
{
	Container contents;
	JButton areaButton, perimeterButton;
	JLabel enterLengthLabel, areaLabel, enterWidthLabel, perimeterLabel,
			areaAnswer, perimeterAnswer;
	JTextField lengthText, widthText;
	JPanel entryPanel, buttonPanel, answerPanel;
	int length;
	int width;
	int area;
	int perimeter;

	public hw()
	{
		super("Rectangle Calculator");

		areaAnswer = new JLabel();
		perimeterAnswer = new JLabel();

		createFrameContents();

		setSize(400, 200);
		setVisible(true);
	}

	public void createFrameContents() {
		contents = getContentPane();
		contents.setLayout(new GridLayout(3, 3));

		entryPanel = new JPanel();
		buttonPanel = new JPanel();
		answerPanel = new JPanel();

		enterLengthLabel = new JLabel("Enter Length ");
		enterWidthLabel = new JLabel("Enter Width ");
		areaLabel = new JLabel("Area: ");
		perimeterLabel = new JLabel("Perimeter: ");
		lengthText = new JTextField();
		widthText = new JTextField();

		areaAnswer = new JLabel();
		perimeterAnswer = new JLabel();



		ButtonHandler bh = new ButtonHandler();
		areaButton = new JButton("Area");
		areaButton.addActionListener(bh);

		ButtonHandler2 bh2 = new ButtonHandler2();
		perimeterButton = new JButton("Perimeter");
		perimeterButton.addActionListener(bh2);

		entryPanel.setLayout(new GridLayout(2, 2));
		entryPanel.add(enterLengthLabel);
		entryPanel.add(lengthText);
		entryPanel.add(enterWidthLabel);
		entryPanel.add(widthText);

		buttonPanel.setLayout(new GridLayout(1, 1));
		buttonPanel.add(areaButton);
		buttonPanel.add(perimeterButton);

		answerPanel.setLayout(new GridLayout(1, 4));
		answerPanel.add(areaLabel);
		answerPanel.add(areaAnswer);
		answerPanel.add(perimeterLabel);
		answerPanel.add(perimeterAnswer);

		contents.add(entryPanel, BorderLayout.NORTH);
		contents.add(buttonPanel, BorderLayout.CENTER);
		contents.add(answerPanel, BorderLayout.SOUTH);
		}

	// buttonHandler for areaButton
	class ButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent ae)
		{
			width = Integer.parseInt(widthText.getText());
			length = Integer.parseInt(lengthText.getText());
			area = length * width;
			areaAnswer.setText(Integer.toString(area));
			answerPanel.revalidate();
			answerPanel.repaint();
		}
	}

	// second buttonHandler for perimeterButton
	class ButtonHandler2 implements ActionListener
	{
		public void actionPerformed(ActionEvent ae)
		{
			width = Integer.parseInt(widthText.getText());
			length = Integer.parseInt(lengthText.getText());
			perimeter = (2 * length) + (2 * width);
			perimeterAnswer.setText(Integer.toString(perimeter));
			answerPanel.revalidate();
			answerPanel.repaint();
		}
	}

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