TimePeriod::prepareTimePeriodForFilter

private function prepareTimePeriodForFilter()
{
	$result = array();
	$filter = $this->getFilterOptions()->getFilter(Filter::getFieldsList());
	if ($filter)
	{
		$result = array(
			'start' => new DateTime($filter['TIME_PERIOD_from']),
			'end' => new DateTime($filter['TIME_PERIOD_to'])
		);
	}
	return $result;
}