raoul2000\workflow\base\SimpleWorkflowBehavior::createTransitionItems PHP Метод

    public function createTransitionItems($status, $WithScenarioNames, $withEventSequence)
    {
        $start = $this->getWorkflowStatus();
        $end = $status;
        $scenario = [];
        $events = ['before' => [], 'after' => []];
        $defaultEventCfg = $newStatus = null;
        $emptyStart = empty($start);
        $emptyEnd = empty($end);
        if ($emptyStart && !$emptyEnd) {
            // (potential) entering workflow -----------------------------------
            $end = $this->ensureStatusInstance($end, true);
            $workflow = $this->_wfSource->getWorkflow($end->getWorkflowId());
            $initialStatusId = $workflow->getInitialStatusId();
            if ($end->getId() !== $initialStatusId) {
                throw new WorkflowException('Not an initial status : ' . $end->getId() . ' ("' . $initialStatusId . '" expected)');
            }
            if ($WithScenarioNames) {
                $scenario = [WorkflowScenario::enterWorkflow($end->getWorkflowId()), WorkflowScenario::enterStatus($end->getId())];
            }
            if ($withEventSequence && $this->_eventSequence !== null) {
                $events = $this->_eventSequence->createEnterWorkflowSequence($end, $this);
            }
            if ($this->fireDefaultEvent) {
                $defaultEventCfg = ['end' => $end, 'sender' => $this];
            }
            $newStatus = $end;
        } elseif (!$emptyStart && $emptyEnd) {
            // leaving workflow -------------------------------------------------
            if ($WithScenarioNames) {
                $scenario = [WorkflowScenario::leaveWorkflow($start->getWorkflowId()), WorkflowScenario::leaveStatus($start->getId())];
            }
            if ($withEventSequence && $this->_eventSequence !== null) {
                $events = $this->_eventSequence->createLeaveWorkflowSequence($start, $this);
            }
            if ($this->fireDefaultEvent) {
                $defaultEventCfg = ['start' => $start, 'sender' => $this];
            }
            $newStatus = $end;
        } elseif (!$emptyStart && !$emptyEnd) {
            // change status ---------------------------------------
            $end = $this->ensureStatusInstance($end, true);
            $transition = $this->_wfSource->getTransition($start->getId(), $end->getId(), $this->selectDefaultWorkflowId());
            // TODO : replace $this->owner with defaultWorkflowId
            if ($transition === null && $start->getId() != $end->getId()) {
                throw new WorkflowException('No transition found between status ' . $start->getId() . ' and ' . $end->getId());
            }
            if ($transition != null) {
                if ($WithScenarioNames) {
                    $scenario = [WorkflowScenario::leaveStatus($start->getId()), WorkflowScenario::changeStatus($start->getId(), $end->getId()), WorkflowScenario::enterStatus($end->getId())];
                }
                if ($withEventSequence && $this->_eventSequence !== null) {
                    $events = $this->_eventSequence->createChangeStatusSequence($transition, $this);
                }
                if ($this->fireDefaultEvent) {
                    $defaultEventCfg = ['start' => $transition->getStartStatus(), 'end' => $transition->getEndStatus(), 'transition' => $transition, 'sender' => $this];
                }
            }
            $newStatus = $end;
        }
        if (count($events) != 0 && (!isset($events['before']) || !isset($events['after']))) {
            throw new WorkflowException('Invalid event sequence format : "before" and "after" keys are mandatory');
        }
        if ($this->fireDefaultEvent && $defaultEventCfg != null) {
            array_unshift($events['before'], new WorkflowEvent(self::EVENT_BEFORE_CHANGE_STATUS, $defaultEventCfg));
            array_unshift($events['after'], new WorkflowEvent(self::EVENT_AFTER_CHANGE_STATUS, $defaultEventCfg));
        }
        return [$newStatus, $scenario, $events];
    }