diff core/lib/Drupal/Core/Render/HtmlResponse.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Render/HtmlResponse.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,48 @@
+<?php
+
+namespace Drupal\Core\Render;
+
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Cache\CacheableResponseInterface;
+use Drupal\Core\Cache\CacheableResponseTrait;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * A response that contains and can expose cacheability metadata and attachments.
+ *
+ * Supports Drupal's caching concepts: cache tags for invalidation and cache
+ * contexts for variations.
+ *
+ * Supports Drupal's idea of #attached metadata: libraries, settings, http_header and html_head.
+ *
+ * @see \Drupal\Core\Cache\CacheableResponse
+ * @see \Drupal\Core\Render\AttachmentsInterface
+ * @see \Drupal\Core\Render\AttachmentsTrait
+ */
+class HtmlResponse extends Response implements CacheableResponseInterface, AttachmentsInterface {
+
+  use CacheableResponseTrait;
+  use AttachmentsTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setContent($content) {
+    // A render array can automatically be converted to a string and set the
+    // necessary metadata.
+    if (is_array($content) && (isset($content['#markup']))) {
+      $content += [
+        '#attached' => [
+          'html_response_attachment_placeholders' => [],
+          'placeholders' => [],
+        ],
+      ];
+      $this->addCacheableDependency(CacheableMetadata::createFromRenderArray($content));
+      $this->setAttachments($content['#attached']);
+      $content = $content['#markup'];
+    }
+
+    return parent::setContent($content);
+  }
+
+}