<?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 himself what events he 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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* * array('eventName' => 'methodName')

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* * array('eventName' => array('methodName', $priority))

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* * array('eventName' => array(array('methodName1', $priority), array('methodName2')))

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*

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* @return array 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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