import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
@SuppressWarnings("serial")
public class CellTester extends JPanel implements MouseListener, MouseMotionListener
{
    private ArrayList<Cell> cells;
    private String message, message2;
    public static final int SIZE = 75;
    public static final int WIDTH = 500;
    public static final int HEIGHT = 500;
    public static final int GAP =3;
    private Font font;

    
    public void resetCells()
    {
        int n = 5 ; 
        cells =  new ArrayList<Cell>(n);
        int r = 50+(int)(Math.random()*205);
        int g = 50+(int)(Math.random()*205);
        int b = 50+(int)(Math.random()*205);
        message ="Try clicking on a cell to switch it on, click off a cell to reset them";
        message2 = " Color is " + r + ", " + g + ", "+b;
        for (int i = 0; i < n; i++)
        {

            Cell c = new Cell(n*SIZE+(n*GAP), 120, SIZE , new Color(r,g,b) );
            cells.add(c);
        }
        repaint();
    }

    public CellTester()  // constructor
    {

        message = "";
        font = new Font("NewTimesRoman", Font.BOLD, 12);
        resetCells();
        addMouseListener(this);
        addMouseMotionListener(this);

    }

    public void paintComponent(Graphics g)
    {
        setBackground(new Color(24,24,25) );
        super.paintComponent(g);
        // Adjust location of boxes according to the current panel size
        int width = this.getWidth() - SIZE;
        for( int i = 0; i < cells.size();  i++ )
        {
            Cell c = cells.get(i);
            int x = (i) % (width/SIZE); //column

            int y =  (i) / (width/SIZE); //row 
            c.setLocation(SIZE/2 + x*SIZE+x*GAP, SIZE/2 + y*SIZE+y*GAP);

        }
        for( Cell c:cells)
        {
            c.draw(g);
        }
        g.setColor(Color.WHITE);
        g.setFont(font);
        g.drawString(message, 20, 20);
        g.drawString(message2, 20, 220);
    }

    public static void main(String[] args)
    {
        JFrame window = new JFrame();
        window.setSize(WIDTH, HEIGHT);
        Container c = window.getContentPane();
        c.add(new CellTester());

        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setVisible(true);
    }

    public void mouseReleased(MouseEvent e) 
    {
        int x = e.getX();
        int y = e.getY();
        for(Cell c:cells)
        {
            if (c.contains(x,y))
            { 
                // This cell has been clicked.  
                c.click();                
                repaint();
                return;
            }
        }
        // If user didn't click on a tile, we reset the game
        resetCells();
        repaint();
    }

    public void mousePressed(MouseEvent e) { }

    public void mouseEntered(MouseEvent e) { }

    public void mouseExited(MouseEvent e) { }

    public void mouseClicked(MouseEvent e) { }

    public void mouseDragged(MouseEvent e) {}

    public void mouseMoved(MouseEvent e) 
    { // hilight a tile if mouse is hovering
        int x=e.getX();
        int y=e.getY();
        //message = "("+x+", "+y+")";
        for(Cell c: cells)
            c.setHighlight(c.contains(x, y)) ;
        repaint();
    }
}