eventmanager.php

См. документацию.

<?php
 
namespace Bitrix\Calendar\Internals\EventManager;
 
use Bitrix\Main\Event;
 
final class EventManager implements EventManagerInterface
{
    private array $handlers = [];
 
    public function addEventHandler($fromModuleId, $eventType, $callback, $includeFile = false, $sort = 100)
    {
        $this->handlers[$eventType][] = ['callback' => $callback, 'sort' => $sort];
    }
 
    public function send(Event $event): void
    {
        $handlers = $this->getEventHandlers($event->getEventType());
        usort($handlers, static fn ($h1, $h2) => $h1['sort'] <=> $h2['sort']);
        foreach ($handlers as $handler)
        {
            $this->sendToEventHandler($handler['callback'], $event);
        }
    }
 
    private function getEventHandlers(string $eventType): array
    {
        return $this->handlers[$eventType];
    }
 
    private function sendToEventHandler(callable $handler, Event $event): void
    {
        try
        {
            $result = call_user_func($handler, $event);
 
            if ($result != null)
            {
                $event->addResult($result);
            }
        }
        catch (\Throwable $e)
        {
            throw $e;
        }
    }
}