/**
* Set the current background color to the given color.
*
* <p>The color object is cloned; you can change the original afterwards. If the color object is
* null, the current background color is turned off (same as nobackground).
*
* @param c the color object.
* @return the current background color.
*/
public Color background(Color c) {
return canvas.setBackground(c == null ? null : c.clone());
}
@Override
public Object clone() throws CloneNotSupportedException {
final CellStyle result = (CellStyle) super.clone();
if (bottomBorderColor != null) result.bottomBorderColor = (Color) bottomBorderColor.clone();
if (fillBackgroundColor != null)
result.fillBackgroundColor = (Color) fillBackgroundColor.clone();
if (leftBorderColor != null) result.leftBorderColor = (Color) leftBorderColor.clone();
if (rightBorderColor != null) result.rightBorderColor = (Color) rightBorderColor.clone();
if (topBorderColor != null) result.topBorderColor = (Color) topBorderColor.clone();
if (font != null) result.font = (Font) font.clone();
return result;
}