Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\content_moderation;
Chris@0: 
Chris@0: use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
Chris@0: use Drupal\Core\Routing\RouteMatchInterface;
Chris@0: use Drupal\node\Entity\Node;
Chris@0: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Determines whether a route is the "Latest version" tab of a node.
Chris@0:  *
Chris@0:  * @internal
Chris@0:  */
Chris@0: class ContentPreprocess implements ContainerInjectionInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The route match service.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Routing\RouteMatchInterface
Chris@0:    */
Chris@0:   protected $routeMatch;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructor.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
Chris@0:    *   Current route match service.
Chris@0:    */
Chris@0:   public function __construct(RouteMatchInterface $route_match) {
Chris@0:     $this->routeMatch = $route_match;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function create(ContainerInterface $container) {
Chris@0:     return new static(
Chris@0:       $container->get('current_route_match')
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * @param array $variables
Chris@0:    *   Theme variables to preprocess.
Chris@0:    *
Chris@0:    * @see hook_preprocess_HOOK()
Chris@0:    */
Chris@0:   public function preprocessNode(array &$variables) {
Chris@0:     // Set the 'page' template variable when the node is being displayed on the
Chris@0:     // "Latest version" tab provided by content_moderation.
Chris@0:     $variables['page'] = $variables['page'] || $this->isLatestVersionPage($variables['node']);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks whether a route is the "Latest version" tab of a node.
Chris@0:    *
Chris@0:    * @param \Drupal\node\Entity\Node $node
Chris@0:    *   A node.
Chris@0:    *
Chris@0:    * @return bool
Chris@0:    *   True if the current route is the latest version tab of the given node.
Chris@0:    */
Chris@0:   public function isLatestVersionPage(Node $node) {
Chris@0:     return $this->routeMatch->getRouteName() == 'entity.node.latest_version'
Chris@0:            && ($pageNode = $this->routeMatch->getParameter('node'))
Chris@0:            && $pageNode->id() == $node->id();
Chris@0:   }
Chris@0: 
Chris@0: }