layout_builder_ipe-1.0.x-dev/src/EventSubscriber/RouteSubscriber.php

<?php

namespace Drupal\layout_builder_ipe\EventSubscriber;

use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Routing\RouteSubscriberBase;
use Drupal\Core\Routing\RoutingEvents;
use Symfony\Component\Routing\RouteCollection;

/**
 * Provides an event subscriber that alters routes.
 */
class RouteSubscriber extends RouteSubscriberBase {

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * Public constructor.
   */
  public function __construct(EntityTypeManagerInterface $entity_type_manager) {
    $this->entityTypeManager = $entity_type_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents(): array {
    $events[RoutingEvents::ALTER] = ['onAlterRoutes', -120];
    return $events;
  }

  /**
   * {@inheritdoc}
   */
  protected function alterRoutes(RouteCollection $collection) {
    /** @var \Drupal\layout_builder\Entity\LayoutEntityDisplayInterface[] $entity_displays */
    $entity_displays = $this->entityTypeManager->getStorage('entity_view_display')->loadByProperties(['third_party_settings.layout_builder.allow_custom' => TRUE]);
    foreach ($entity_displays as $entity_display) {
      $entity_type_id = $entity_display->getTargetEntityTypeId();
      if ($route = $collection->get('layout_builder.overrides.' . $entity_type_id . '.view')) {
        $route->setRequirement('_custom_access', '\Drupal\layout_builder_ipe\Access\LayoutBuilderPageAccess::accessLayoutPage');
      }
    }
  }

}