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[github/wallabag/wallabag.git] / vendor / symfony / event-dispatcher / Symfony / Component / EventDispatcher / EventSubscriberInterface.php
1 <?php
2
3 /*
4 * This file is part of the Symfony package.
5 *
6 * (c) Fabien Potencier <fabien@symfony.com>
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\EventDispatcher;
13
14 /**
15 * An EventSubscriber knows himself what events he is interested in.
16 * If an EventSubscriber is added to an EventDispatcherInterface, the manager invokes
17 * {@link getSubscribedEvents} and registers the subscriber as a listener for all
18 * returned events.
19 *
20 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
21 * @author Jonathan Wage <jonwage@gmail.com>
22 * @author Roman Borschel <roman@code-factory.org>
23 * @author Bernhard Schussek <bschussek@gmail.com>
24 *
25 * @api
26 */
27 interface EventSubscriberInterface
28 {
29 /**
30 * Returns an array of event names this subscriber wants to listen to.
31 *
32 * The array keys are event names and the value can be:
33 *
34 * * The method name to call (priority defaults to 0)
35 * * An array composed of the method name to call and the priority
36 * * An array of arrays composed of the method names to call and respective
37 * priorities, or 0 if unset
38 *
39 * For instance:
40 *
41 * * array('eventName' => 'methodName')
42 * * array('eventName' => array('methodName', $priority))
43 * * array('eventName' => array(array('methodName1', $priority), array('methodName2'))
44 *
45 * @return array The event names to listen to
46 *
47 * @api
48 */
49 public static function getSubscribedEvents();
50 }