50 lines
1.7 KiB
PHP
50 lines
1.7 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\EventDispatcher;
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/**
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* An EventSubscriber knows itself what events it is interested in.
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* If an EventSubscriber is added to an EventDispatcherInterface, the manager invokes
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* {@link getSubscribedEvents} and registers the subscriber as a listener for all
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* returned events.
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*
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* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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* @author Jonathan Wage <jonwage@gmail.com>
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* @author Roman Borschel <roman@code-factory.org>
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* @author Bernhard Schussek <bschussek@gmail.com>
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*/
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interface EventSubscriberInterface
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{
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/**
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* Returns an array of event names this subscriber wants to listen to.
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*
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* The array keys are event names and the value can be:
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*
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* * The method name to call (priority defaults to 0)
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* * An array composed of the method name to call and the priority
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* * An array of arrays composed of the method names to call and respective
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* priorities, or 0 if unset
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*
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* For instance:
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*
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* * ['eventName' => 'methodName']
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* * ['eventName' => ['methodName', $priority]]
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* * ['eventName' => [['methodName1', $priority], ['methodName2']]]
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*
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* The code must not depend on runtime state as it will only be called at compile time.
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* All logic depending on runtime state must be put into the individual methods handling the events.
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*
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* @return array<string, mixed> The event names to listen to
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*/
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public static function getSubscribedEvents();
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}
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