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- 28.08.2024
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ImmutableEventDispatcher.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\EventDispatcher;
13
14 /**
15 * A read-only proxy for an event dispatcher.
16 *
17 * @author Bernhard Schussek <bschussek@gmail.com>
18 */
19 class ImmutableEventDispatcher implements EventDispatcherInterface
20 {
21 private $dispatcher;
22
23 public function __construct(EventDispatcherInterface $dispatcher)
24 {
25 $this->dispatcher = $dispatcher;
26 }
27
28 /**
29 * {@inheritdoc}
30 */
31 public function dispatch($eventName, Event $event = null)
32 {
33 return $this->dispatcher->dispatch($eventName, $event);
34 }
35
36 /**
37 * {@inheritdoc}
38 */
39 public function addListener($eventName, $listener, $priority = 0)
40 {
41 throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
42 }
43
44 /**
45 * {@inheritdoc}
46 */
47 public function addSubscriber(EventSubscriberInterface $subscriber)
48 {
49 throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
50 }
51
52 /**
53 * {@inheritdoc}
54 */
55 public function removeListener($eventName, $listener)
56 {
57 throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
58 }
59
60 /**
61 * {@inheritdoc}
62 */
63 public function removeSubscriber(EventSubscriberInterface $subscriber)
64 {
65 throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
66 }
67
68 /**
69 * {@inheritdoc}
70 */
71 public function getListeners($eventName = null)
72 {
73 return $this->dispatcher->getListeners($eventName);
74 }
75
76 /**
77 * {@inheritdoc}
78 */
79 public function getListenerPriority($eventName, $listener)
80 {
81 return $this->dispatcher->getListenerPriority($eventName, $listener);
82 }
83
84 /**
85 * {@inheritdoc}
86 */
87 public function hasListeners($eventName = null)
88 {
89 return $this->dispatcher->hasListeners($eventName);
90 }
91 }
92