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<?php |
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namespace Finite\Event; |
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use Finite\Event\Callback\Callback; |
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use Finite\Event\Callback\CallbackBuilder; |
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use Finite\StateMachine\StateMachineInterface; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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use Symfony\Component\OptionsResolver\Options; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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/** |
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* Manage callback-to-event bindings by trigger spec definition |
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* |
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* @author Yohan Giarelli <[email protected]> |
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*/ |
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class CallbackHandler |
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{ |
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/** |
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* @deprecated To be removed in 2.0 |
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*/ |
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const ALL = 'all'; |
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/** |
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* @var EventDispatcherInterface |
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*/ |
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protected $dispatcher; |
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/** |
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* @var OptionsResolver |
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*/ |
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protected $specResolver; |
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/** |
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* @param EventDispatcherInterface $dispatcher |
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*/ |
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public function __construct(EventDispatcherInterface $dispatcher) |
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{ |
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$this->dispatcher = $dispatcher; |
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$this->specResolver = new OptionsResolver; |
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$this->specResolver->setDefaults( |
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array( |
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'on' => self::ALL, |
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'from' => self::ALL, |
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'to' => self::ALL, |
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) |
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); |
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$this->specResolver->setAllowedTypes('on', array('string', 'array')); |
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$this->specResolver->setAllowedTypes('from', array('string', 'array')); |
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$this->specResolver->setAllowedTypes('to', array('string', 'array')); |
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$toArrayNormalizer = function (Options $options, $value) { |
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return (array) $value; |
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}; |
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$this->specResolver->setNormalizer('on', $toArrayNormalizer); |
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$this->specResolver->setNormalizer('from', $toArrayNormalizer); |
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$this->specResolver->setNormalizer('to', $toArrayNormalizer); |
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} |
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/** |
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* @param StateMachineInterface|Callback $smOrCallback |
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* @param callable $callback |
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* @param array $spec |
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* |
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* @return CallbackHandler |
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*/ |
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public function addBefore($smOrCallback, $callback = null, array $spec = array()) |
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{ |
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$this->add($smOrCallback, FiniteEvents::PRE_TRANSITION, $callback, $spec); |
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return $this; |
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} |
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/** |
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* @param StateMachineInterface|Callback $smOrCallback |
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* @param callable $callback |
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* @param array $spec |
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* |
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* @return CallbackHandler |
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*/ |
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public function addAfter($smOrCallback, $callback = null, array $spec = array()) |
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{ |
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$this->add($smOrCallback, FiniteEvents::POST_TRANSITION, $callback, $spec); |
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return $this; |
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} |
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/** |
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* @param StateMachineInterface|Callback $smOrCallback |
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* @param string $event |
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* @param callable $callable |
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* @param array $specs |
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* |
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* @return CallbackHandler |
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*/ |
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protected function add($smOrCallback, $event, $callable = null, array $specs = array()) |
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{ |
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if ($smOrCallback instanceof Callback) { |
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$this->dispatcher->addListener($event, $smOrCallback); |
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return $this; |
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} |
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trigger_error( |
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'Use of CallbackHandler::add without a Callback instance is deprecated and will be removed in 2.0', |
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E_USER_DEPRECATED |
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); |
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$specs = $this->specResolver->resolve($specs); |
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$callback = CallbackBuilder::create($smOrCallback, $specs['from'], $specs['to'], $specs['on'], $callable)->getCallback(); |
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$this->dispatcher->addListener($event, $callback); |
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return $this; |
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} |
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} |
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yohang /
Finite
