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<?php |
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namespace Finite\Event\Callback; |
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use Finite\Event\CallbackHandler; |
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use Finite\Event\TransitionEvent; |
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use Finite\StateMachine\StateMachineInterface; |
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/** |
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* Concrete implementation of CallbackSpecification |
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* |
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* @author Yohan Giarelli <[email protected]> |
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*/ |
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class CallbackSpecification implements CallbackSpecificationInterface |
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{ |
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/** |
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* @var array |
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*/ |
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private $specs = array(); |
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/** |
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* @var StateMachineInterface |
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*/ |
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private $stateMachine; |
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/** |
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* @param StateMachineInterface $sm |
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* @param array $from |
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* @param array $to |
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* @param array $on |
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*/ |
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public function __construct(StateMachineInterface $sm, array $from, array $to, array $on) |
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{ |
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$this->stateMachine = $sm; |
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$isExclusion = function ($str) { return 0 === strpos($str, '-'); }; |
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$removeDash = function ($str) { return substr($str, 1); }; |
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foreach (array('from', 'to', 'on') as $clause) { |
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$excludedClause = 'excluded_' . $clause; |
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$this->specs[$excludedClause] = array_filter(${$clause}, $isExclusion); |
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$this->specs[$clause] = array_diff(${$clause}, $this->specs[$excludedClause]); |
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$this->specs[$excludedClause] = array_map($removeDash, $this->specs[$excludedClause]); |
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// For compatibility with old CallbackHandler. |
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// To be removed in 2.0 |
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if (in_array(CallbackHandler::ALL, $this->specs[$clause])) { |
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$this->specs[$clause] = array(); |
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} |
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} |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isSatisfiedBy(TransitionEvent $event) |
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{ |
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return |
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$event->getStateMachine() === $this->stateMachine && |
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$this->supportsClause('from', $event->getInitialState()->getName()) && |
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$this->supportsClause('to', $event->getTransition()->getState()) && |
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$this->supportsClause('on', $event->getTransition()->getName()); |
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} |
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/** |
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* @param string $clause |
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* @param string $property |
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* |
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* @return bool |
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*/ |
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private function supportsClause($clause, $property) |
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{ |
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$excludedClause = 'excluded_' . $clause; |
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return |
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(0 === count($this->specs[$clause]) || in_array($property, $this->specs[$clause])) && |
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(0 === count($this->specs[$excludedClause]) || !in_array($property, $this->specs[$excludedClause])); |
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} |
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} |
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yohang /
Finite
