/**
* Creates and returns workflow event sequence and/or scenario for the pending transition.
*
* Being given the current status and the status value passed as argument this method returns the corresponding
* event sequence and the scenario names.
*
* The returned array contains up to 3 elements :
* - index = 0 : the Status instance corresponding to the $status passed as argument
* - index = 1 : an array of [[\raoul2000\workflow\events\WorkflowEvent]] instances (the event sequence) that
* may contain no element if no event sequence component is configured or if event sequence are not requested ($withEventSequence = false)
* - index = 2 : an array of scenario names (string) that may be empty if scenario names are not requested ($WithScenarioNames= false)
*
* @param mixed $status a status Id or a Status instance considered as the target status to reach
* @param boolean $WithScenarioNames When TRUE scenario names are requested, FALSE otherwise
* @param boolean $withEventSequence When TRUE the event sequence is requested, FALSE otherwise
* @throws WorkflowException
* @return array Three elements : Status intance, scenario names, event sequence.
*
*/
public function createTransitionItems($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];
}
public function rules()
{
return [[['status'], '\\raoul2000\\workflow\\validation\\WorkflowValidator'], ['name', 'required', 'on' => WorkflowScenario::changeStatus('Item05Workflow/new', 'Item05Workflow/correction')], ['category', 'required', 'on' => WorkflowScenario::enterWorkflow('Item05Workflow')], ['category', 'compare', 'compareValue' => 'done', 'on' => WorkflowScenario::leaveWorkflow()], ['tags', 'required', 'on' => WorkflowScenario::leaveStatus('Item05Workflow/correction')], ['author', 'required', 'on' => WorkflowScenario::enterStatus('Item05Workflow/published')]];
}