CTaskListState::switchSubmode

private function switchSubmode($submodeId, $switchOn = false)
{
	$submodeId = (int) $submodeId;

	if ( ! in_array($submodeId, self::getKnownSubmodes(), true) )
		throw new TasksException('', TasksException::TE_WRONG_ARGUMENTS);

	$this->state[self::TOC_SUBMODES][$submodeId][self::TOC_SELECTED] = ($switchOn ? 'Y' : 'N');
}