CBPVirtualDocument::canUserOperateDocumentType

static function canUserOperateDocumentType($operation, $userId, $documentType, $arParameters = array())
{
	$documentType = trim($documentType);
	if ($documentType == '')
		return false;

	$userId = intval($userId);

	if (array_key_exists("UserIsAdmin", $arParameters))
	{
		if ($arParameters["UserIsAdmin"] === true)
			return true;
	}
	else
	{
		$arGroups = CUser::GetUserGroup($userId);
		if (in_array(1, $arGroups))
			return true;
	}

	if (!array_key_exists("AllUserGroups", $arParameters))
	{
		if (!array_key_exists("UserGroups", $arParameters))
			$arParameters["UserGroups"] = CUser::GetUserGroup($userId);

		$arParameters["AllUserGroups"] = $arParameters["UserGroups"];
		$arParameters["AllUserGroups"][] = "author";
	}

	if (!array_key_exists("DocumentStates", $arParameters))
	{
		$arParameters["DocumentStates"] = CBPDocument::GetDocumentStates(
			array("bizproc", "CBPVirtualDocument", $documentType),
			null
		);
	}

	if (array_key_exists("WorkflowId", $arParameters))
	{
		if (array_key_exists($arParameters["WorkflowId"], $arParameters["DocumentStates"]))
			$arParameters["DocumentStates"] = array($arParameters["WorkflowId"] => $arParameters["DocumentStates"][$arParameters["WorkflowId"]]);
		else
			return false;
	}

	$arAllowableOperations = CBPDocument::GetAllowableOperations(
		$userId,
		$arParameters["AllUserGroups"],
		$arParameters["DocumentStates"]
	);

	// $arAllowableOperations == null - workflow is not a statemachine
	// $arAllowableOperations == array() - no allowable operations
	// $arAllowableOperations == array("read", ...) - allowable operations list
	if (!is_array($arAllowableOperations) && $operation != 4)
		return true;

	if ($operation == 4)
		return true;

	$r = false;
	switch ($operation)
	{
		case 0:				// DOCUMENT_OPERATION_VIEW_WORKFLOW
			$r = false;
			break;
		case 1:				// DOCUMENT_OPERATION_START_WORKFLOW
			$r = in_array("create", $arAllowableOperations);
			break;
		case 4:				// DOCUMENT_OPERATION_CREATE_WORKFLOW
			$r = false;
			break;
		case 2:				// DOCUMENT_OPERATION_WRITE_DOCUMENT
			$r = in_array("create", $arAllowableOperations);
			break;
		case 3:				// DOCUMENT_OPERATION_READ_DOCUMENT
			$r = false;
			break;
		default:
			$r = false;
	}

	return $r;
}