import java.awt.*;               // needed for the graphics

class FigureCanvas extends Canvas {
  private int height;
  private int width;
  private Figure [] figures = new Figure [10];
  private int fignum = 0;

  public FigureCanvas (int h, int w) {
    height = h;
    width = w;
    setBackground(Color.white);
  }
 
  public void add(Figure fig) {
    if (fignum >= figures.length) {
      Figure [] newfigs = new Figure [figures.length+10];
      for (int i = 0; i < figures.length; i++) {
	newfigs[i] = figures[i];
      }
      figures = newfigs;
    }
    figures[fignum] = fig;
    fignum++;
  }

  public void paint(Graphics g) {
    for (int i = 0; i < fignum; i++) {
      figures[i].draw(g);
    }
  }

  public void updatePosition(int row, int col) {
    System.out.println("before getting graphics");
    Graphics g = getGraphics();
    g.setColor (Color.white);
    g.fillRect(row,col,20,30);
  }
}