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<?php |
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namespace Metabor\Statemachine\Graph; |
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use Fhaculty\Graph\Graph; |
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use Metabor\Callback\Callback; |
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use Metabor\StringConverter; |
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use MetaborStd\Event\EventInterface; |
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use MetaborStd\Statemachine\StateCollectionInterface; |
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use MetaborStd\Statemachine\StateInterface; |
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use MetaborStd\Statemachine\TransitionInterface; |
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use MetaborStd\StringConverterInterface; |
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/** |
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* @author otischlinger |
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*/ |
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class GraphBuilder |
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{ |
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/** |
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* @var array |
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*/ |
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private $eventLayout = array(); |
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/** |
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* @var array |
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*/ |
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private $stateLayout = array(); |
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/** |
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* @var \SplObjectStorage |
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*/ |
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private $layoutCallback; |
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/** |
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* @var Graph |
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*/ |
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private $graph; |
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/** |
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* @var StringConverterInterface |
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*/ |
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private $stringConverter; |
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/** |
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* @param Graph $graph |
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* @param StringConverterInterface $stringConverter |
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*/ |
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public function __construct(Graph $graph, StringConverterInterface $stringConverter = null) |
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{ |
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$this->layoutCallback = new \SplObjectStorage(); |
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$this->graph = $graph; |
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if ($stringConverter) { |
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$this->stringConverter = $stringConverter; |
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} else { |
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$this->stringConverter = new StringConverter(); |
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} |
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} |
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/** |
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* @link http://www.graphviz.org/doc/info/attrs.html |
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* |
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* @param string $flag |
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* @param scalar $value |
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* @param array $layout |
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*/ |
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public function setEventLayout($flag, $value, array $layout) |
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{ |
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$value = (string) $value; |
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$this->eventLayout[$flag][$value] = $layout; |
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} |
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/** |
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* @link http://www.graphviz.org/doc/info/attrs.html |
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* |
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* @param string $flag |
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* @param scalar $value |
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* @param array $layout |
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*/ |
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public function setStateLayout($flag, $value, array $layout) |
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{ |
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$value = (string) $value; |
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$this->stateLayout[$flag][$value] = $layout; |
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} |
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/** |
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* @param Callback $callback |
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*/ |
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public function attachLayoutCallback(Callback $callback) |
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{ |
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$this->layoutCallback->attach($callback); |
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} |
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/** |
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* @param Callback $callback |
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*/ |
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public function detachLayoutCallback(Callback $callback) |
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{ |
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$this->layoutCallback->detach($callback); |
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} |
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/** |
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* @param \ArrayAccess $flaggedObject |
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* @param array $layout |
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* |
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* @return array |
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*/ |
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protected function getLayoutOptions(\ArrayAccess $flaggedObject, array $layout) |
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{ |
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$result = array(); |
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foreach ($layout as $flag => $options) { |
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if ($flaggedObject->offsetExists($flag)) { |
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$value = $flaggedObject->offsetGet($flag); |
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$value = (string) $value; |
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if (isset($options[$value])) { |
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$result += $options[$value]; |
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} |
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} |
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} |
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/* @var $callback callable */ |
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foreach ($this->layoutCallback as $callback) { |
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$result = $callback($flaggedObject, $result); |
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} |
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return $result; |
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} |
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/** |
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* @param StateInterface $state |
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* |
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* @return \Fhaculty\Graph\Vertex |
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*/ |
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public function createStatusVertex(StateInterface $state) |
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{ |
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$stateName = $state->getName(); |
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$vertex = $this->graph->createVertex($stateName, true); |
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if ($state instanceof \ArrayAccess) { |
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$layout = $this->getLayoutOptions($state, $this->stateLayout); |
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if (method_exists($vertex, 'setLayout')) { |
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$vertex->setLayout($layout); |
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} else { |
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foreach ($layout as $name => $value) { |
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$vertex->setAttribute('graphviz.' . $name, $value); |
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} |
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} |
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} |
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return $vertex; |
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} |
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/** |
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* @param EventInterface $event |
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* |
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* @return string |
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*/ |
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protected function convertObserverToString(EventInterface $event) |
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{ |
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$observers = array(); |
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foreach ($event->getObservers() as $observer) { |
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$observers[] = $this->stringConverter->convertToString($observer); |
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} |
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return implode(', ', $observers); |
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} |
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/** |
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* @param TransitionInterface $transition |
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* |
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* @return string |
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*/ |
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protected function getTransitionLabel(StateInterface $state, TransitionInterface $transition) |
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{ |
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$labelParts = array(); |
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$eventName = $transition->getEventName(); |
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if ($eventName) { |
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$labelParts[] = 'E: ' . $eventName; |
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$event = $state->getEvent($eventName); |
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$observerName = $this->convertObserverToString($event); |
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if ($observerName) { |
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$labelParts[] = 'C: ' . $observerName; |
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} |
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} |
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$conditionName = $transition->getConditionName(); |
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if ($conditionName) { |
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$labelParts[] = 'IF: ' . $conditionName; |
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} |
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$label = implode(PHP_EOL, $labelParts); |
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return $label; |
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} |
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/** |
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* @param StateInterface $state |
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* @param TransitionInterface $transition |
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*/ |
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protected function addTransition(StateInterface $state, TransitionInterface $transition) |
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{ |
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$sourceStateVertex = $this->createStatusVertex($state); |
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$targetStateVertex = $this->createStatusVertex($transition->getTargetState()); |
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$edge = $sourceStateVertex->createEdgeTo($targetStateVertex); |
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$label = $this->getTransitionLabel($state, $transition); |
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if ($label) { |
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if (method_exists($edge, 'setLayoutAttribute')) { |
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$edge->setLayoutAttribute('label', $label); |
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} else { |
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$edge->setAttribute('graphviz.label', $label); |
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} |
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} |
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$eventName = $transition->getEventName(); |
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if ($eventName) { |
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$event = $state->getEvent($eventName); |
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if ($event instanceof \ArrayAccess) { |
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$layout = $this->getLayoutOptions($event, $this->eventLayout); |
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if (method_exists($edge, 'setLayout')) { |
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$edge->setLayout($layout); |
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} else { |
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foreach ($layout as $name => $value) { |
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$edge->setAttribute('graphviz.' . $name, $value); |
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} |
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} |
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} |
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} |
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} |
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/** |
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* @param StateInterface $state |
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*/ |
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public function addState(StateInterface $state) |
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{ |
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$this->createStatusVertex($state); |
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/* @var $transition TransitionInterface */ |
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foreach ($state->getTransitions() as $transition) { |
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$this->addTransition($state, $transition); |
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} |
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} |
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/** |
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* @param \Traversable $states |
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*/ |
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public function addStates(\Traversable $states) |
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{ |
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foreach ($states as $state) { |
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$this->addState($state); |
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} |
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} |
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/** |
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* @param StateCollectionInterface $stateCollection |
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*/ |
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public function addStateCollection(StateCollectionInterface $stateCollection) |
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{ |
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$this->addStates($stateCollection->getStates()); |
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} |
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/** |
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* @return \Fhaculty\Graph\Graph |
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*/ |
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public function getGraph() |
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{ |
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return $this->graph; |
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} |
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} |
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Metabor /
Statemachine
Loading history...
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.