diff core/modules/big_pipe/src/EventSubscriber/NoBigPipeRouteAlterSubscriber.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/big_pipe/src/EventSubscriber/NoBigPipeRouteAlterSubscriber.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,48 @@
+<?php
+
+namespace Drupal\big_pipe\EventSubscriber;
+
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Drupal\Core\Routing\RoutingEvents;
+use Drupal\Core\Routing\RouteBuildEvent;
+
+/**
+ * Sets the '_no_big_pipe' option on select routes.
+ */
+class NoBigPipeRouteAlterSubscriber implements EventSubscriberInterface {
+
+  /**
+   * Alters select routes to have the '_no_big_pipe' option.
+   *
+   * @param \Drupal\Core\Routing\RouteBuildEvent $event
+   *   The event to process.
+   */
+  public function onRoutingRouteAlterSetNoBigPipe(RouteBuildEvent $event) {
+    $no_big_pipe_routes = [
+      // The batch system uses a <meta> refresh to work without JavaScript.
+      'system.batch_page.html',
+      // When a user would install the BigPipe module using a browser and with
+      // JavaScript disabled, the first response contains the status messages
+      // for installing a module, but then the BigPipe no-JS redirect occurs,
+      // which then causes the user to not see those status messages.
+      // @see https://www.drupal.org/node/2469431#comment-10901944
+      'system.modules_list',
+    ];
+
+    $route_collection = $event->getRouteCollection();
+    foreach ($no_big_pipe_routes as $excluded_route) {
+      if ($route = $route_collection->get($excluded_route)) {
+        $route->setOption('_no_big_pipe', TRUE);
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events[RoutingEvents::ALTER][] = ['onRoutingRouteAlterSetNoBigPipe'];
+    return $events;
+  }
+
+}