<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\EventDispatcher;
/**
* A read-only proxy for an event dispatcher.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class ImmutableEventDispatcher implements EventDispatcherInterface
{
/**
* The proxied dispatcher.
*
* @var EventDispatcherInterface
*/
private $dispatcher;
/**
* Creates an unmodifiable proxy for an event dispatcher.
*
* @param EventDispatcherInterface $dispatcher The proxied event dispatcher
*/
public function __construct(EventDispatcherInterface $dispatcher)
{
$this->dispatcher = $dispatcher;
}
/**
* {@inheritdoc}
*/
public function dispatch($eventName, Event $event = null)
{
return $this->dispatcher->dispatch($eventName, $event);
}
/**
* {@inheritdoc}
*/
public function addListener($eventName, $listener, $priority = 0)
{
throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
}
/**
* {@inheritdoc}
*/
public function addSubscriber(EventSubscriberInterface $subscriber)
{
throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
}
/**
* {@inheritdoc}
*/
public function removeListener($eventName, $listener)
{
throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
}
/**
* {@inheritdoc}
*/
public function removeSubscriber(EventSubscriberInterface $subscriber)
{
throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
}
/**
* {@inheritdoc}
*/
public function getListeners($eventName = null)
{
return $this->dispatcher->getListeners($eventName);
}
/**
* {@inheritdoc}
*/
public function getListenerPriority($eventName, $listener)
{
return $this->dispatcher->getListenerPriority($eventName, $listener);
}
/**
* {@inheritdoc}
*/
public function hasListeners($eventName = null)
{
return $this->dispatcher->hasListeners($eventName);
}
}
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