dependenteventsubscribertrait.php

См. документацию.

<?php
 
namespace Bitrix\Calendar\Internals\EventManager\EventSubscriber;
 
use Bitrix\Main\Event;
use Bitrix\Main\EventResult;
 
trait DependentEventSubscriberTrait
{
    use EventSubscriberResponseTrait;
 
    abstract static function getDependencies(): array;
 
    abstract public function handle(Event $event): EventResult;
 
    public function __invoke(Event $event): EventResult
    {
        if (is_a(static::class, DependentEventSubscriberInterface::class, true))
        {
            $this->checkDependencies($event, static::getDependencies());
        }
 
        return $this->handle($event);
    }
 
    protected function getResultFromSubscriber(Event $event, string $subscriberClass): mixed
    {
        foreach ($event->getResults() as $subscriberResult)
        {
            if (
                $subscriberResult->getHandler() !== $subscriberClass
                || (int)$subscriberResult->getType() !== EventResult::SUCCESS
            )
            {
                continue;
            }
 
            return $subscriberResult->getParameters();
        }
 
        return null;
    }
 
    private function checkDependencies(Event $event, array $dependencies): void
    {
        $executedSubscribers = array_map(
            fn (EventResult $eventResult) => $eventResult->getHandler(),
            $event->getResults()
        );
 
        if (!empty(array_diff($dependencies, $executedSubscribers)))
        {
            throw new \RuntimeException('Dependencies not executed');
        }
    }
}