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<?php |
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/* |
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* This file is part of the slince/event-dispatcher package. |
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* |
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* (c) Slince <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Slince\EventDispatcher; |
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use Slince\EventDispatcher\Exception\InvalidArgumentException; |
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class Dispatcher implements DispatcherInterface |
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{ |
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/** |
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* Array of listeners. |
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* |
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* @var ListenerPriorityQueue[] |
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*/ |
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protected $listeners = []; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function dispatch($eventName, EventInterface $event = null) |
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{ |
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if ($eventName instanceof EventInterface) { |
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$event = $eventName; |
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} elseif (is_null($event)) { |
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$event = new Event($eventName, null); |
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} |
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if (isset($this->listeners[$event->getName()])) { |
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foreach ($this->listeners[$event->getName()] as $listener) { |
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if ($event->isPropagationStopped()) { |
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break; |
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} |
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call_user_func([$listener, 'handle'], $event); |
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} |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addListener($eventName, $listener, $priority = self::PRIORITY_DEFAULT) |
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{ |
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if (!isset($this->listeners[$eventName])) { |
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$this->listeners[$eventName] = new ListenerPriorityQueue(); |
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} |
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if (is_callable($listener)) { |
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$listener = CallableListener::createFromCallable($listener); |
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} |
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if (!$listener instanceof ListenerInterface) { |
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throw new InvalidArgumentException('The listener should be the implementation of the listenerInterface or callable'); |
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} |
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$this->listeners[$eventName]->insert($listener, $priority); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addSubscriber(SubscriberInterface $subscriber) |
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{ |
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foreach ($subscriber->getSubscribedEvents() as $eventName => $action) { |
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$this->addListener($eventName, [$subscriber, $action]); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function removeListener($eventName, $listener) |
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{ |
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if (empty($this->listeners[$eventName])) { |
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return; |
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} |
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if (is_callable($listener) && false === ($listener = CallableListener::findByCallable($listener))) { |
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return; |
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} |
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$this->listeners[$eventName]->detach($listener); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function removeSubscriber(SubscriberInterface $subscriber) |
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{ |
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foreach ($subscriber->getSubscribedEvents() as $eventName => $action) { |
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$this->removeListener($eventName, [$subscriber, $action]); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function removeAllListeners($eventName = null) |
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{ |
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if (!is_null($eventName) && isset($this->listeners[$eventName])) { |
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$this->listeners[$eventName]->clear(); |
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} else { |
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foreach ($this->listeners as $queue) { |
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$queue->clear(); |
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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 hasListener($eventName, $listener) |
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{ |
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if (!isset($this->listeners[$eventName])) { |
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return false; |
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} |
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if (is_callable($listener)) { |
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$listener = CallableListener::findByCallable($listener); |
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} |
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return $this->listeners[$eventName]->contains($listener); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getListeners($eventName = null) |
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{ |
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if (!is_null($eventName)) { |
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return isset($this->listeners[$eventName]) ? |
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$this->listeners[$eventName]->all() : []; |
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} else { |
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$listeners = []; |
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foreach ($this->listeners as $queue) { |
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$listeners = array_merge($listeners, $queue->all()); |
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} |
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return $listeners; |
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} |
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} |
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} |
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: