Prado\Web\UI\TControl::getEnableViewState PHP Метод

    public function getEnableViewState($checkParents = false)
    {
        if ($checkParents) {
            for ($control = $this; $control !== null; $control = $control->getParent()) {
                if ($control->_flags & self::IS_DISABLE_VIEWSTATE) {
                    return false;
                }
            }
            return true;
        } else {
            return !($this->_flags & self::IS_DISABLE_VIEWSTATE);
        }
    }