/**
* Sets the box size. The size must include the size and type header,
* fields, and all contained boxes.
*
* The method will propagate size change to box parents.
*
* @param integer $size The box size.
*/
public function setSize($size)
{
if ($this->_parent !== null)
$this->_parent->setSize
(($this->_parent->getSize() > 0 ? $this->_parent->getSize() : 0) +
$size - ($this->_size > 0 ? $this->_size : 0));
$this->_size = $size;
}
