Version 1

[yaffs-website] / web / core / lib / Drupal / Core / Routing / RouteSubscriberBase.php

diff --git a/web/core/lib/Drupal/Core/Routing/RouteSubscriberBase.php b/web/core/lib/Drupal/Core/Routing/RouteSubscriberBase.php
new file mode 100644 (file)
index 0000000..b6f9584
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Routing/RouteSubscriberBase.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace Drupal\Core\Routing;
+
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * Provides a base implementation for RouteSubscriber.
+ */
+abstract class RouteSubscriberBase implements EventSubscriberInterface {
+
+  /**
+   * Alters existing routes for a specific collection.
+   *
+   * @param \Symfony\Component\Routing\RouteCollection $collection
+   *   The route collection for adding routes.
+   */
+  abstract protected function alterRoutes(RouteCollection $collection);
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events[RoutingEvents::ALTER] = 'onAlterRoutes';
+    return $events;
+  }
+
+  /**
+   * Delegates the route altering to self::alterRoutes().
+   *
+   * @param \Drupal\Core\Routing\RouteBuildEvent $event
+   *   The route build event.
+   */
+  public function onAlterRoutes(RouteBuildEvent $event) {
+    $collection = $event->getRouteCollection();
+    $this->alterRoutes($collection);
+  }
+
+}