import java.awt.Color;

import java.awt.Graphics;

/**

* A square at a fixed location that changes color.

*/

public class Cell {

public static final Color OFF = Color.WHITE;

public static final Color ON = Color.BLACK;

private final int x;

private final int y;

private final int size;

private Color color;

/**

* Constructs a new cell, initially turned off.

*

* @param x the X coordinate

* @param y the Y coordinate

* @param size number of pixels

*/

public Cell(int x, int y, int size) {

this.x = x;

this.y = y;

this.size = size;

this.color = OFF;

}

/**

* Paints the cell on the screen.

*

* @param g graphics context

*/

public void draw(Graphics g) {

g.setColor(this.color);

g.fillRect(this.x + 1, this.y + 1, this.size - 1, this.size - 1);

g.setColor(Color.LIGHT_GRAY);

g.drawRect(this.x, this.y, this.size, this.size);

}

/**

* @return the cell's color

*/

public Color getColor() {

return this.color;

}

/**

* @param color the new color

*/

public void setColor(Color color) {

this.color = color;

}

/**

* @return true if the cell is on

*/

public boolean isOff() {

return this.color == OFF;

}

/**

* @return true if the cell is off

*/

public boolean isOn() {

return this.color == ON;

}

/**

* Sets the cell's color to OFF.

*/

public void turnOff() {

this.color = OFF;

}

/**

* Sets the cell's color to ON.

*/

public void turnOn() {

this.color = ON;

}

}