return tableCell.getTableView().getVisibleLeafIndex(tableCell.getTableColumn());
}
@Override
public Focus focuser() {
final Rectangle bounds = getScreenBounds();
return new FXClickFocus(this, new Point(
Math.max(bounds.getWidth() / 2, bounds.getWidth() - 3),
Math.max(bounds.getHeight() / 2, bounds.getHeight() - 3)));
}