return new Rectangle(x, y, SwingUtilities.computeStringWidth(fm, s), fm .getHeight());
return new Rectangle(x, y, SwingUtilities.computeStringWidth(fm, s), fm.getHeight()); } return null;
	private Rectangle getCellBounds(int x, int y, Object cell)  {		String s = cell.toString();		Font f = tree.getFont();		FontMetrics fm = tree.getToolkit().getFontMetrics(tree.getFont());		return new Rectangle(x, y, SwingUtilities.computeStringWidth(fm, s), fm				.getHeight());  }