Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\book\Access;
Chris@0: 
Chris@0: use Drupal\book\BookManagerInterface;
Chris@0: use Drupal\Core\Access\AccessResult;
Chris@0: use Drupal\Core\Routing\Access\AccessInterface;
Chris@0: use Drupal\node\NodeInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Determines whether the requested node can be removed from its book.
Chris@0:  */
Chris@0: class BookNodeIsRemovableAccessCheck implements AccessInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * Book Manager Service.
Chris@0:    *
Chris@0:    * @var \Drupal\book\BookManagerInterface
Chris@0:    */
Chris@0:   protected $bookManager;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a BookNodeIsRemovableAccessCheck object.
Chris@0:    *
Chris@0:    * @param \Drupal\book\BookManagerInterface $book_manager
Chris@0:    *   Book Manager Service.
Chris@0:    */
Chris@0:   public function __construct(BookManagerInterface $book_manager) {
Chris@0:     $this->bookManager = $book_manager;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks access for removing the node from its book.
Chris@0:    *
Chris@0:    * @param \Drupal\node\NodeInterface $node
Chris@0:    *   The node requested to be removed from its book.
Chris@0:    *
Chris@0:    * @return \Drupal\Core\Access\AccessResultInterface
Chris@0:    *   The access result.
Chris@0:    */
Chris@0:   public function access(NodeInterface $node) {
Chris@0:     return AccessResult::allowedIf($this->bookManager->checkNodeIsRemovable($node))->addCacheableDependency($node);
Chris@0:   }
Chris@0: 
Chris@0: }