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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\EventDispatcher;
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13
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14 /**
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15 * A read-only proxy for an event dispatcher.
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16 *
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17 * @author Bernhard Schussek <bschussek@gmail.com>
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18 */
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19 class ImmutableEventDispatcher implements EventDispatcherInterface
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20 {
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21 private $dispatcher;
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22
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23 public function __construct(EventDispatcherInterface $dispatcher)
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24 {
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25 $this->dispatcher = $dispatcher;
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26 }
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27
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28 /**
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29 * {@inheritdoc}
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30 */
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31 public function dispatch($eventName, Event $event = null)
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32 {
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33 return $this->dispatcher->dispatch($eventName, $event);
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34 }
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35
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36 /**
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37 * {@inheritdoc}
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38 */
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39 public function addListener($eventName, $listener, $priority = 0)
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40 {
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41 throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
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42 }
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43
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44 /**
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45 * {@inheritdoc}
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46 */
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47 public function addSubscriber(EventSubscriberInterface $subscriber)
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48 {
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49 throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
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50 }
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51
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52 /**
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53 * {@inheritdoc}
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54 */
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55 public function removeListener($eventName, $listener)
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56 {
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57 throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
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58 }
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59
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60 /**
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61 * {@inheritdoc}
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62 */
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63 public function removeSubscriber(EventSubscriberInterface $subscriber)
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64 {
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65 throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
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66 }
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67
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68 /**
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69 * {@inheritdoc}
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70 */
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71 public function getListeners($eventName = null)
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72 {
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73 return $this->dispatcher->getListeners($eventName);
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74 }
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75
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76 /**
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77 * {@inheritdoc}
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78 */
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79 public function getListenerPriority($eventName, $listener)
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80 {
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81 return $this->dispatcher->getListenerPriority($eventName, $listener);
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82 }
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83
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84 /**
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85 * {@inheritdoc}
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86 */
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87 public function hasListeners($eventName = null)
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88 {
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89 return $this->dispatcher->hasListeners($eventName);
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90 }
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91 }
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