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<?php
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/**
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* @package php-tmdb\laravel
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* @author Mark Redeman <[email protected]>
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* @copyright (c) 2014, Mark Redeman
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*/
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namespace Tmdb\Laravel\Adapters;
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use Symfony\Component\EventDispatcher\EventSubscriberInterface;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface as SymfonyDispatcher;
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/**
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* This adapter provides a Laravel integration for applications
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* using the Symfony EventDispatcherInterface
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* It passes any request on to a Symfony Dispatcher and only
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* uses the Laravel Dispatcher when dispatching events
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*/
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abstract class EventDispatcherAdapter implements SymfonyDispatcher
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{
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/**
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* The Laravel Events Dispatcher
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* @var \Illuminate\Contracts\Events\Dispatcher | \Illuminate\Events\Dispatcher
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*/
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protected $laravelDispatcher;
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/**
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* The Symfony Event Dispatcher
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* @var \Symfony\Component\EventDispatcher\EventDispatcherInterface
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*/
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protected $symfonyDispatcher;
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/**
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* Dispatches an event to all registered listeners.
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*
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* @param object|null $event The event to pass to the event handlers/listeners.
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* If not supplied, an empty Event instance is created.
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*
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*
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* @param string|null $eventName The name of the event to dispatch. The name of
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* the event is the name of the method that is
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* invoked on listeners.
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* @return object
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* @api
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*/
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public function dispatch(object $event = null, string $eventName = null) : object
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{
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$this->laravelDispatcher->dispatch($event, $eventName);
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$this->symfonyDispatcher->dispatch($event, $eventName);
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return $event;
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}
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/**
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* Adds an event listener that listens on the specified events.
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*
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* @param string $eventName The event to listen on
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* @param callable $listener The listener
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* @param int $priority The higher this value, the earlier an event
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* listener will be triggered in the chain (defaults to 0)
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*
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* @api
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*/
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public function addListener($eventName, $listener, $priority = 0)
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{
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$this->symfonyDispatcher->addListener($eventName, $listener, $priority);
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}
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/**
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* Adds an event subscriber.
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*
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* The subscriber is asked for all the events he is
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* interested in and added as a listener for these events.
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*
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* @param EventSubscriberInterface $subscriber The subscriber.
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*
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* @api
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*/
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public function addSubscriber(EventSubscriberInterface $subscriber)
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{
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$this->symfonyDispatcher->addSubscriber($subscriber);
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}
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/**
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* Removes an event listener from the specified events.
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*
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* @param string $eventName The event to remove a listener from
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* @param callable $listenerToBeRemoved The listener to remove
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*/
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public function removeListener($eventName, $listenerToBeRemoved)
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{
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$this->symfonyDispatcher->removeListener($eventName, $listenerToBeRemoved);
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}
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/**
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* Removes an event subscriber.
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*
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* @param EventSubscriberInterface $subscriber The subscriber
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*/
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public function removeSubscriber(EventSubscriberInterface $subscriber)
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{
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$this->symfonyDispatcher->removeSubscriber($subscriber);
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}
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/**
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* Gets the listeners of a specific event or all listeners.
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*
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* @param string $eventName The name of the event
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*
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* @return array The event listeners for the specified event, or all event listeners by event name
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*/
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public function getListeners(string $eventName = null): array
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{
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return $this->symfonyDispatcher->getListeners($eventName);
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}
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/**
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* Checks whether an event has any registered listeners.
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*
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* @param string $eventName The name of the event
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*
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* @return bool true if the specified event has any listeners, false otherwise
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*/
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public function hasListeners(string $eventName = null): bool
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{
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return ($this->symfonyDispatcher->hasListeners($eventName) ||
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$this->laravelDispatcher->hasListeners($eventName));
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}
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/**
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* Gets the listener priority for a specific event.
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*
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* Returns null if the event or the listener does not exist.
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*
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* @param string $eventName The name of the event
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* @param callable $listener The listener
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*
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* @return int|null The event listener priority
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*/
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public function getListenerPriority($eventName, $listener): ?int
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{
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return $this->symfonyDispatcher->getListenerPriority($eventName, $listener);
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}
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}
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DariusIII /
tmdb-laravel
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