Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\EventSubscriber;
Chris@0: 
Chris@0: use Drupal\Core\Routing\LazyRouteEnhancer;
Chris@0: use Drupal\Core\Routing\RouteBuildEvent;
Chris@0: use Drupal\Core\Routing\RoutingEvents;
Chris@0: use Symfony\Component\EventDispatcher\EventSubscriberInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Listens to the new routes before they get saved.
Chris@0:  */
Chris@0: class RouteEnhancerSubscriber implements EventSubscriberInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * @var \Drupal\Core\Routing\LazyRouteEnhancer
Chris@0:    */
Chris@0:   protected $routeEnhancer;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs the RouteEnhancerSubscriber object.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Routing\LazyRouteEnhancer $route_enhancer
Chris@0:    *   The lazy route enhancer.
Chris@0:    */
Chris@0:   public function __construct(LazyRouteEnhancer $route_enhancer) {
Chris@0:     $this->routeEnhancer = $route_enhancer;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Adds the route_enhancer object to the route collection.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Routing\RouteBuildEvent $event
Chris@0:    *   The route build event.
Chris@0:    */
Chris@0:   public function onRouteAlter(RouteBuildEvent $event) {
Chris@0:     $this->routeEnhancer->setEnhancers($event->getRouteCollection());
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function getSubscribedEvents() {
Chris@0:     $events[RoutingEvents::ALTER][] = ['onRouteAlter', -300];
Chris@0:     return $events;
Chris@0:   }
Chris@0: 
Chris@0: }