diff core/modules/system/src/EventSubscriber/AdminRouteSubscriber.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/system/src/EventSubscriber/AdminRouteSubscriber.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,39 @@
+<?php
+
+namespace Drupal\system\EventSubscriber;
+
+use Drupal\Core\Routing\RouteSubscriberBase;
+use Drupal\Core\Routing\RoutingEvents;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * Adds the _admin_route option to each admin route.
+ */
+class AdminRouteSubscriber extends RouteSubscriberBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function alterRoutes(RouteCollection $collection) {
+    foreach ($collection->all() as $route) {
+      if (strpos($route->getPath(), '/admin') === 0 && !$route->hasOption('_admin_route')) {
+        $route->setOption('_admin_route', TRUE);
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events = parent::getSubscribedEvents();
+
+    // Use a lower priority than \Drupal\field_ui\Routing\RouteSubscriber or
+    // \Drupal\views\EventSubscriber\RouteSubscriber to ensure we add the option
+    // to their routes.
+    $events[RoutingEvents::ALTER] = ['onAlterRoutes', -200];
+
+    return $events;
+  }
+
+}