EventDispatcher.php

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<?php
 
declare(strict_types=1);
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
namespace ‪TYPO3\CMS\Core\EventDispatcher;
 
use Psr\EventDispatcher\EventDispatcherInterface;
use Psr\EventDispatcher\ListenerProviderInterface;
use Psr\EventDispatcher\StoppableEventInterface;
use ‪TYPO3\CMS\Core\SingletonInterface;
 
class ‪EventDispatcher implements EventDispatcherInterface, ‪SingletonInterface
{
    public function ‪__construct(
        protected readonly ListenerProviderInterface $listenerProvider
    ) {}
 
    public function ‪dispatch(object $event): object
    {
        // If the event is already stopped, nothing to do here.
        if ($event instanceof StoppableEventInterface && $event->isPropagationStopped()) {
            return $event;
        }
        foreach ($this->listenerProvider->getListenersForEvent($event) as $listener) {
            $listener($event);
            if ($event instanceof StoppableEventInterface && $event->isPropagationStopped()) {
                break;
            }
        }
        return $event;
    }
}