<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\EventDispatcher;
/**
* An EventSubscriber knows itself what events it is interested in.
* If an EventSubscriber is added to an EventDispatcherInterface, the manager invokes
* {@link getSubscribedEvents} and registers the subscriber as a listener for all
* returned events.
*
* @author Guilherme Blanco <[email protected]>
* @author Jonathan Wage <[email protected]>
* @author Roman Borschel <[email protected]>
* @author Bernhard Schussek <[email protected]>
*/
interface EventSubscriberInterface
{
/**
* Returns an array of event names this subscriber wants to listen to.
*
* The array keys are event names and the value can be:
*
* * The method name to call (priority defaults to 0)
* * An array composed of the method name to call and the priority
* * An array of arrays composed of the method names to call and respective
* priorities, or 0 if unset
*
* For instance:
*
* * ['eventName' => 'methodName']
* * ['eventName' => ['methodName', $priority]]
* * ['eventName' => [['methodName1', $priority], ['methodName2']]]
*
* @return array The event names to listen to
*/
public static function getSubscribedEvents();
}