/**
* Adds an state transition to the state machine.
*
* @param string $stateId
* @param string $eventId
* @param string $nextStateId
* @param callback $action
* @param callback $guard
*
* @throws ActionNotCallableException
* @throws StateNotFoundException
*/
public function addTransition($stateId, $eventId, $nextStateId, $action = null, $guard = null)
{
$state = $this->stateMachine->getState($stateId);
if ($state === null) {
throw new StateNotFoundException(sprintf('The state "%s" is not found.', $stateId));
}
$event = $state->getEvent($eventId);
if ($event === null) {
$event = new TransitionEvent($eventId);
}
$nextState = $this->stateMachine->getState($nextStateId);
if ($nextState === null) {
throw new StateNotFoundException(sprintf('The state "%s" is not found.', $nextStateId));
}
if ($action !== null) {
if (!is_callable($action)) {
throw new ActionNotCallableException(sprintf('The action for the event "%s" in the state "%s" is not callable.', $eventId, $stateId));
}
}
if ($guard !== null) {
if (!is_callable($guard)) {
throw new ActionNotCallableException(sprintf('The guard for the event "%s" in the state "%s" is not callable.', $eventId, $stateId));
}
}
$this->stateMachine->addTransition($state, $event, $nextState, $action, $guard);
}
/**
* Adds an state transition to the state machine.
*
* @param string $stateId
* @param string $eventId
* @param string $nextStateId
*
* @throws StateNotFoundException
*/
public function addTransition($stateId, $eventId, $nextStateId)
{
$state = $this->stateMachine->getState($stateId);
if ($state === null) {
throw new StateNotFoundException(sprintf('The state "%s" is not found.', $stateId));
}
$event = $state->getEvent($eventId);
if ($event === null) {
$event = new TransitionEvent($eventId);
}
$nextState = $this->stateMachine->getState($nextStateId);
if ($nextState === null) {
throw new StateNotFoundException(sprintf('The state "%s" is not found.', $nextStateId));
}
$this->stateMachine->addTransition(new Transition($nextState, $state, $event));
}