trait ClassUtilsTrait in Scheduled Updates 8

trait ClassUtilsTrait {

  /**
   * Determines if an object or class name implements any interfaces in a list.
   *
   * Convenience function around class_implements.
   *
   * @param string|object $toCheck
   * @param array $interfaces
   *
   * @return boolean
   */
  protected function implementsInterface($toCheck, array $interfaces) {
    if (empty($toCheck)) {
      return FALSE;
    }
    if (array_intersect($interfaces, class_implements($toCheck))) {
      return TRUE;
    }
    return FALSE;
  }

  /**
   * Get class names of interfaces that support revision ownership.
   *
   * Core and Entity API interfaces.
   *
   * @return array
   */
  protected function revisionOwnerInterfaces() {
    return [
      'Drupal\\entity\\Revision\\EntityRevisionLogInterface',
      'Drupal\\node\\NodeInterface',
    ];
  }

  /**
   * Get the revision owner for an ContentEntity.
   *
   * Need because 2 possible interfaces support this.
   *
   * @param \Drupal\Core\Entity\ContentEntityInterface $entity
   *
   * @return \Drupal\user\UserInterface|NULL
   */
  protected function getRevisionOwner(ContentEntityInterface $entity) {
    if ($entity instanceof NodeInterface) {
      return $entity
        ->getRevisionAuthor();
    }
    elseif ($this
      ->implementsInterface($entity, [
      'Drupal\\entity\\Revision\\EntityRevisionLogInterface',
    ])) {

      /** @var \Drupal\entity\Revision\EntityRevisionLogInterface $entity */
      return $entity
        ->getRevisionUser();
    }
    return NULL;
  }

  /**
   * Get the entity owner if applicable.
   *
   * @param \Drupal\Core\Entity\ContentEntityInterface $entity
   *
   * @return \Drupal\user\UserInterface|null
   */
  protected function getEntityOwner(ContentEntityInterface $entity) {
    if ($entity instanceof EntityOwnerInterface) {
      return $entity
        ->getOwner();
    }
    return NULL;
  }

  /**
   * @return EntityTypeManagerInterface
   */
  protected function entityTypeManager() {
    if (isset($this->entityTypeManager)) {
      return $this->entityTypeManager;
    }
    return NULL;
  }
  protected function entityLabel($type_id) {
    return $this
      ->entityTypeManager()
      ->getDefinition($type_id)
      ->getLabel();
  }
  protected function bundleLabel($type_id) {
    return $this
      ->entityTypeManager()
      ->getDefinition($type_id)
      ->getBundleLabel();
  }
  protected function typeSupportsBundles($type_id) {
    $bundle_type = $this
      ->entityTypeManager()
      ->getDefinition($type_id)
      ->getBundleEntityType();
    if (empty($bundle_type)) {
      return FALSE;
    }
    return TRUE;
  }
  public function targetTypeLabel(ScheduledUpdateTypeInterface $scheduledUpdateType) {
    return $this
      ->entityLabel($scheduledUpdateType
      ->getUpdateEntityType());
  }
  protected function targetTypeBundleLabel(ScheduledUpdateTypeInterface $scheduledUpdateType) {
    return $this
      ->bundleLabel($scheduledUpdateType
      ->getUpdateEntityType());
  }
  protected function targetSupportBundles(ScheduledUpdateTypeInterface $scheduledUpdateType) {
    return $this
      ->typeSupportsBundles($scheduledUpdateType
      ->getUpdateEntityType());
  }

  /**
   * Determines if the class for an entity type definition implements and interface.
   *
   * @param \Drupal\Core\Entity\EntityTypeInterface $type
   * @param array $interfaces
   *
   * @return bool
   */
  protected function definitionClassImplementsInterface(EntityTypeInterface $type, array $interfaces) {
    return $this
      ->implementsInterface($type
      ->getClass(), $interfaces);
  }

}