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<?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);
}
}