/**
* Moves the current token to the next node of the workflow.
*
* @param ContextInterface $context
*
* @return Workflow
*
* @throws Exception\NotInitializedWorkflowException
* @throws Exception\NoOpenTransitionException
* @throws Exception\MoreThanOneOpenTransitionException
*/
public function next(ContextInterface $context)
{
if (null === $this->current) {
throw new Exception\NotInitializedWorkflowException();
}
$transitions = $this->current->getOpenTransitions($context);
if (0 === count($transitions)) {
throw new Exception\NoOpenTransitionException();
} elseif (1 < count($transitions)) {
throw new Exception\MoreThanOneOpenTransitionException();
}
$transition = array_pop($transitions);
$token = $transition->getDestination()->getName();
$this->initialize($token);
$this->eventDispatcher->dispatch($token, new Event($context, $token));
return $this;
}
/**
* Opens a workflow.
*
* @param string $src
* @param SpecificationInterface $spec
*
* @return Builder
*/
public function open($src, SpecificationInterface $spec)
{
$this->start = $this->nodes->get(uniqid());
$this->start->addTransition($this->nodes->get($src), $spec);
return $this;
}
