ImmutableEventDispatcher.php

<?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 {
    public function __construct(EventDispatcherInterface $dispatcher) {
    }
    public function dispatch(object $event, ?string $eventName = null) : object {
        return $this->dispatcher
            ->dispatch($event, $eventName);
    }
    public function addListener(string $eventName, callable|array $listener, int $priority = 0) : never {
        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
    }
    public function addSubscriber(EventSubscriberInterface $subscriber) : never {
        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
    }
    public function removeListener(string $eventName, callable|array $listener) : never {
        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
    }
    public function removeSubscriber(EventSubscriberInterface $subscriber) : never {
        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
    }
    public function getListeners(?string $eventName = null) : array {
        return $this->dispatcher
            ->getListeners($eventName);
    }
    public function getListenerPriority(string $eventName, callable|array $listener) : ?int {
        return $this->dispatcher
            ->getListenerPriority($eventName, $listener);
    }
    public function hasListeners(?string $eventName = null) : bool {
        return $this->dispatcher
            ->hasListeners($eventName);
    }

}