/*
Written by Mahshid mzeinaly@sfu.ca for IAT351 lab2
Note that this class only works with the valid input from the user! (numbers)
*/

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

public class RandomColorSum implements MouseListener, ActionListener  {

	JLabel EnterLabel;
	JButton EnterButt, ResetButt;
	int sum;
	JLabel SumTextLabel;
	JLabel SumResultLabel;
	JTextField textBox;

	public RandomColorSum(){

		JFrame window = new JFrame("Random Color Sum!");
		JPanel content = new JPanel();
		content.addMouseListener( this );  // Register mouse listener.
		window.setContentPane(content);
		window.addWindowListener(new WindowHandler());

		EnterLabel=new JLabel("Enter a new number:");
		SumTextLabel=new JLabel("Sum is");
		SumResultLabel=new JLabel(Integer.toString(sum));

		textBox=new JTextField();
		textBox.setPreferredSize(new Dimension(100,30));

		EnterButt=new JButton("Enter");
		ResetButt=new JButton("Reset");

		EnterButt.addActionListener(this);
		ResetButt.addActionListener(this);

		content.add(EnterLabel);
		content.add(textBox);
		content.add(EnterButt);
		content.add(SumTextLabel);
		content.add(SumResultLabel);
		content.add(ResetButt);

		sum=0;

		window.setSize(350,200);
		window.setVisible(true);
	}

	public static void main(String[] args) {
	    RandomColorSum myMainApp=new RandomColorSum();  //creating a new instance of our main class
	}

    public void mousePressed(MouseEvent evt) { //changing the color of all the texts (JLabels)
		EnterLabel.setOpaque(true);
		float hue = (float)Math.random(); // randomly changes the hue
		EnterLabel.setForeground(Color.getHSBColor(hue, 1.0F, 1.0F) );
		SumResultLabel.setForeground(Color.getHSBColor(hue, 1.0F, 1.0F) );
		SumTextLabel.setForeground(Color.getHSBColor(hue, 1.0F, 1.0F) );
	}

	public void mouseClicked(MouseEvent evt) { }
	public void mouseReleased(MouseEvent evt) { }
	public void mouseEntered(MouseEvent evt) { }
	public void mouseExited(MouseEvent evt) { }

	@Override
	public void actionPerformed(ActionEvent arg0) {
	    if(((JButton)arg0.getSource()).equals(EnterButt)){  // Case1: "Enter" button is pressed

			sum+=Integer.parseInt(textBox.getText());
			SumResultLabel.setText(Integer.toString(sum));
		}

		if(((JButton)arg0.getSource()).equals(ResetButt)){   Case2: "Reset" button is pressed

			sum=0;
			textBox.setText("");
			SumResultLabel.setText(Integer.toString(sum));
		}

	}

    private static class WindowHandler implements WindowListener  // a seperate class handles the Window Events
	{
		@Override
		public void windowActivated(WindowEvent arg0) {
			System.out.println("Activated");	
		}

		@Override
		public void windowClosed(WindowEvent arg0) {
			System.out.println("Closed");
			JFrame EndFrame=new JFrame("End"); // a new window apears when the program is closed
			JLabel Enter2=new JLabel("Good Bye!");
			JPanel content = new JPanel();
			content.add(Enter2);
			EndFrame.setContentPane(content);
			EndFrame.setSize(new Dimension(200,100));
			EndFrame.setLocation(400, 200);
			EndFrame.setVisible(true);

		}

		@Override
		public void windowClosing(WindowEvent arg0) {	
		        arg0.getWindow().dispose();             // comment this line and see the differnce!
			System.out.println(arg0.getWindow().isVisible());	

		}

		@Override
		public void windowDeactivated(WindowEvent arg0) {
			System.out.println("Deactivated");	

		}

		@Override
		public void windowDeiconified(WindowEvent arg0) {
			System.out.println("Deiconified");

		}

		@Override
		public void windowIconified(WindowEvent arg0) {
			System.out.println("Iconified");

		}

		@Override
		public void windowOpened(WindowEvent arg0) {
			System.out.println("Opened");

		}

	}// private class

}