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| Copyright: | Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. |
| License: | GNU General Public License version 2 or later; see LICENSE |
| File Size: | 127 lines (3 kb) |
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DispatcherInterface:: (9 methods):
dispatch()
addListener()
clearListeners()
countListeners()
getListeners()
hasListener()
removeListener()
addSubscriber()
removeSubscriber()
Interface: DispatcherInterface - X-Ref
Interface for event dispatchers.| dispatch(string $name, ?EventInterface $event = null) X-Ref |
| Dispatches an event to all registered listeners. param: string $name The name of the event to dispatch. param: EventInterface $event The event to pass to the event handlers/listeners. return: EventInterface |
| addListener(string $eventName, callable $callback, int $priority = 0) X-Ref |
| Attaches a listener to an event param: string $eventName The event to listen to. param: callable $callback A callable function. param: integer $priority The priority at which the $callback executed. return: boolean |
| clearListeners($event = null) X-Ref |
| Clear the listeners in this dispatcher. If an event is specified, the listeners will be cleared only for that event. param: string $event The event name. return: $this |
| countListeners($event) X-Ref |
| Count the number of registered listeners for the given event. param: string $event The event name. return: integer |
| getListeners(?string $event = null) X-Ref |
| Get the listeners registered to the given event. param: string|null $event The event to fetch listeners for or null to fetch all listeners return: callable[] An array of registered listeners sorted according to their priorities. |
| hasListener(callable $callback, ?string $eventName = null) X-Ref |
| Tell if the given listener has been added. If an event is specified, it will tell if the listener is registered for that event. param: callable $callback The callable to check is listening to the event. param: string|null $eventName An optional event name to check a listener is subscribed to. return: boolean True if the listener is registered, false otherwise. |
| removeListener(string $eventName, callable $listener) X-Ref |
| Removes an event listener from the specified event. param: string $eventName The event to remove a listener from. param: callable $listener The listener to remove. return: void |
| addSubscriber(SubscriberInterface $subscriber) X-Ref |
| Adds an event subscriber. param: SubscriberInterface $subscriber The subscriber. return: void |
| removeSubscriber(SubscriberInterface $subscriber) X-Ref |
| Removes an event subscriber. param: SubscriberInterface $subscriber The subscriber. return: void |
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