/**
* @see \wcf\data\ISortableAction::validateUpdatePosition()
*/
public function validateUpdatePosition()
{
WCF::getSession()->checkPermissions($this->permissionsUpdate);
if (!isset($this->parameters['data']['structure']) || !is_array($this->parameters['data']['structure'])) {
throw new UserInputException('structure');
}
$noticeList = new NoticeList();
$noticeList->getConditionBuilder()->add('notice.noticeID IN (?)', array($this->parameters['data']['structure'][0]));
if ($noticeList->countObjects() != count($this->parameters['data']['structure'][0])) {
throw new UserInputException('structure');
}
$this->readInteger('offset', true, 'data');
}