/**
* Validate control. Do not call directly!
* @param CaptchaControl
* @return bool
* @throws \Nette\InvalidStateException
*/
public function validateCaptcha(CaptchaControl $control)
{
$parent = $control->getParent();
$uidFieldName = $control->getUidFieldName();
if (!isset($parent[$uidFieldName])) {
throw new \Nette\InvalidStateException('Can\'t find ' . __CLASS__ . ' uid field ' . $uidFieldName . ' in parent');
}
$uid = $parent[$uidFieldName]->getValue();
$sessionValue = $control->getSession($uid);
$control->unsetSession($uid);
return $sessionValue === $control->getValue();
}
