/**
* @param string the URL to the long description of the image.
*/
public function setDescriptionUrl($value)
{
if (parent::getDescriptionUrl() === $value) {
return;
}
parent::setDescriptionUrl($value);
if ($this->getActiveControl()->canUpdateClientSide()) {
$this->getPage()->getCallbackClient()->setAttribute($this, 'longdesc', $value);
}
}