package com.cool;

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Random;

import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Cool extends JFrame {
	private static final long serialVersionUID = 1L;

	private int colorCounter, counter;

	public static void main(String[] args) {
		new Cool().start();
	}

	private void start() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 500, 500);
		setExtendedState(getExtendedState() | JFrame.MAXIMIZED_BOTH);
		setTitle("Cool");
		setLayout(new FlowLayout());
		getContentPane().setBackground(Color.decode("#9999"));
		repaint();

		Random ran = new Random();

		int maxColorCounter = 1;

		ArrayList<JComponent> comps = new ArrayList<JComponent>();
		for (int i = 0; i < 6000; i++) {
			JPanel panel = new JPanel();
			int i2 = 0;
			panel.setBorder(BorderFactory.createEmptyBorder(i2, i2, i2, i2));

			panel.addMouseListener(new MouseAdapter() {
				public void mouseEntered(MouseEvent evt) {
					switch (colorCounter) {
					case 0:
						panel.setBackground(new Color((float) Math.random(), 1, 1));
						break;
					case 1:
						panel.setBackground(new Color(1, 1, (float) Math.random()));
						break;
					}
				}

				public void mouseExited(MouseEvent evt) {

				}
			});

			comps.add(panel);
			add(panel);
		}

		int len = comps.size() - 1;

		Collections.shuffle(comps, new Random());

		setVisible(true);

		while (true) {
			sleep(1);

			counter++;
			if (counter > len) {
				counter = 0;
				colorCounter++;
				if (colorCounter > maxColorCounter)
					colorCounter = 0;
			}

			switch (colorCounter) {
			case 0:
				comps.get(counter).setBackground(new Color((float) Math.random(), 1, 1));
				break;
			case 1:
				comps.get(counter).setBackground(new Color(1, 1, (float) Math.random()));
				break;
			}
		}

	}

	private void sleep(int i) {
		try {
			Thread.sleep(i);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}

}