Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\field_ui\Access;
Chris@0: 
Chris@0: use Drupal\Core\Access\AccessResult;
Chris@18: use Drupal\Core\DependencyInjection\DeprecatedServicePropertyTrait;
Chris@18: use Drupal\Core\Entity\EntityTypeManagerInterface;
Chris@0: use Drupal\Core\Routing\Access\AccessInterface;
Chris@0: use Drupal\Core\Routing\RouteMatchInterface;
Chris@0: use Drupal\Core\Session\AccountInterface;
Chris@0: use Symfony\Component\Routing\Route;
Chris@0: 
Chris@0: /**
Chris@0:  * Defines an access check for entity view mode routes.
Chris@0:  *
Chris@0:  * @see \Drupal\Core\Entity\Entity\EntityViewMode
Chris@0:  */
Chris@0: class ViewModeAccessCheck implements AccessInterface {
Chris@18:   use DeprecatedServicePropertyTrait;
Chris@0: 
Chris@0:   /**
Chris@18:    * {@inheritdoc}
Chris@18:    */
Chris@18:   protected $deprecatedProperties = ['entityManager' => 'entity.manager'];
Chris@18: 
Chris@18:   /**
Chris@18:    * The entity type manager.
Chris@0:    *
Chris@18:    * @var \Drupal\Core\Entity\EntityTypeManagerInterface
Chris@0:    */
Chris@18:   protected $entityTypeManager;
Chris@0: 
Chris@0:   /**
Chris@0:    * Creates a new ViewModeAccessCheck.
Chris@0:    *
Chris@18:    * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
Chris@18:    *   The entity type manager.
Chris@0:    */
Chris@18:   public function __construct(EntityTypeManagerInterface $entity_type_manager) {
Chris@18:     $this->entityTypeManager = $entity_type_manager;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks access to the view mode.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\Routing\Route $route
Chris@0:    *   The route to check against.
Chris@0:    * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
Chris@0:    *   The parametrized route.
Chris@0:    * @param \Drupal\Core\Session\AccountInterface $account
Chris@0:    *   The currently logged in account.
Chris@0:    * @param string $view_mode_name
Chris@0:    *   (optional) The view mode. Defaults to 'default'.
Chris@0:    * @param string $bundle
Chris@0:    *   (optional) The bundle. Different entity types can have different names
Chris@0:    *   for their bundle key, so if not specified on the route via a {bundle}
Chris@0:    *   parameter, the access checker determines the appropriate key name, and
Chris@0:    *   gets the value from the corresponding request attribute. For example,
Chris@0:    *   for nodes, the bundle key is "node_type", so the value would be
Chris@0:    *   available via the {node_type} parameter rather than a {bundle}
Chris@0:    *   parameter.
Chris@0:    *
Chris@0:    * @return \Drupal\Core\Access\AccessResultInterface
Chris@0:    *   The access result.
Chris@0:    */
Chris@0:   public function access(Route $route, RouteMatchInterface $route_match, AccountInterface $account, $view_mode_name = 'default', $bundle = NULL) {
Chris@0:     $access = AccessResult::neutral();
Chris@0:     if ($entity_type_id = $route->getDefault('entity_type_id')) {
Chris@0:       if (empty($bundle)) {
Chris@18:         $entity_type = $this->entityTypeManager->getDefinition($entity_type_id);
Chris@0:         $bundle = $route_match->getRawParameter($entity_type->getBundleEntityType());
Chris@0:       }
Chris@0: 
Chris@0:       $visibility = FALSE;
Chris@0:       if ($view_mode_name == 'default') {
Chris@0:         $visibility = TRUE;
Chris@0:       }
Chris@18:       elseif ($entity_display = $this->entityTypeManager->getStorage('entity_view_display')->load($entity_type_id . '.' . $bundle . '.' . $view_mode_name)) {
Chris@0:         $visibility = $entity_display->status();
Chris@0:       }
Chris@0: 
Chris@0:       if ($view_mode_name != 'default' && $entity_display) {
Chris@0:         $access->addCacheableDependency($entity_display);
Chris@0:       }
Chris@0: 
Chris@0:       if ($visibility) {
Chris@0:         $permission = $route->getRequirement('_field_ui_view_mode_access');
Chris@0:         $access = $access->orIf(AccessResult::allowedIfHasPermission($account, $permission));
Chris@0:       }
Chris@0:     }
Chris@0:     return $access;
Chris@0:   }
Chris@0: 
Chris@0: }