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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 | * A read-only proxy for an event dispatcher. | |
16 | * | |
17 | * @author Bernhard Schussek <bschussek@gmail.com> | |
18 | */ | |
19 | class ImmutableEventDispatcher implements EventDispatcherInterface | |
20 | { | |
21 | /** | |
22 | * The proxied dispatcher. | |
23 | * @var EventDispatcherInterface | |
24 | */ | |
25 | private $dispatcher; | |
26 | ||
27 | /** | |
28 | * Creates an unmodifiable proxy for an event dispatcher. | |
29 | * | |
30 | * @param EventDispatcherInterface $dispatcher The proxied event dispatcher. | |
31 | */ | |
32 | public function __construct(EventDispatcherInterface $dispatcher) | |
33 | { | |
34 | $this->dispatcher = $dispatcher; | |
35 | } | |
36 | ||
37 | /** | |
38 | * {@inheritdoc} | |
39 | */ | |
40 | public function dispatch($eventName, Event $event = null) | |
41 | { | |
42 | return $this->dispatcher->dispatch($eventName, $event); | |
43 | } | |
44 | ||
45 | /** | |
46 | * {@inheritdoc} | |
47 | */ | |
48 | public function addListener($eventName, $listener, $priority = 0) | |
49 | { | |
50 | throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.'); | |
51 | } | |
52 | ||
53 | /** | |
54 | * {@inheritdoc} | |
55 | */ | |
56 | public function addSubscriber(EventSubscriberInterface $subscriber) | |
57 | { | |
58 | throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.'); | |
59 | } | |
60 | ||
61 | /** | |
62 | * {@inheritdoc} | |
63 | */ | |
64 | public function removeListener($eventName, $listener) | |
65 | { | |
66 | throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.'); | |
67 | } | |
68 | ||
69 | /** | |
70 | * {@inheritdoc} | |
71 | */ | |
72 | public function removeSubscriber(EventSubscriberInterface $subscriber) | |
73 | { | |
74 | throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.'); | |
75 | } | |
76 | ||
77 | /** | |
78 | * {@inheritdoc} | |
79 | */ | |
80 | public function getListeners($eventName = null) | |
81 | { | |
82 | return $this->dispatcher->getListeners($eventName); | |
83 | } | |
84 | ||
85 | /** | |
86 | * {@inheritdoc} | |
87 | */ | |
88 | public function hasListeners($eventName = null) | |
89 | { | |
90 | return $this->dispatcher->hasListeners($eventName); | |
91 | } | |
92 | } |