Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\node\Access;
Chris@0: 
Chris@0: use Drupal\Core\Entity\EntityManagerInterface;
Chris@0: use Drupal\Core\Routing\Access\AccessInterface;
Chris@0: use Drupal\Core\Session\AccountInterface;
Chris@0: use Drupal\node\NodeInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Determines access to node previews.
Chris@0:  *
Chris@0:  * @ingroup node_access
Chris@0:  */
Chris@0: class NodePreviewAccessCheck implements AccessInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The entity manager.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Entity\EntityManagerInterface
Chris@0:    */
Chris@0:   protected $entityManager;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a EntityCreateAccessCheck object.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
Chris@0:    *   The entity manager.
Chris@0:    */
Chris@0:   public function __construct(EntityManagerInterface $entity_manager) {
Chris@0:     $this->entityManager = $entity_manager;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks access to the node preview page.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Session\AccountInterface $account
Chris@0:    *   The currently logged in account.
Chris@0:    * @param \Drupal\node\NodeInterface $node_preview
Chris@0:    *   The node that is being previewed.
Chris@0:    *
Chris@0:    * @return string
Chris@0:    *   A \Drupal\Core\Access\AccessInterface constant value.
Chris@0:    */
Chris@0:   public function access(AccountInterface $account, NodeInterface $node_preview) {
Chris@0:     if ($node_preview->isNew()) {
Chris@0:       $access_controller = $this->entityManager->getAccessControlHandler('node');
Chris@0:       return $access_controller->createAccess($node_preview->bundle(), $account, [], TRUE);
Chris@0:     }
Chris@0:     else {
Chris@0:       return $node_preview->access('update', $account, TRUE);
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0: }