/**
* Converts a render array into an HtmlFragment object.
*
* @param array|string $page_content
* The page content area to display.
* @param \Symfony\Component\HttpFoundation\Request $request
* The request object.
*
* @return \Drupal\Core\Page\HtmlPage
* A page object.
*/
protected function createHtmlFragment($page_content, Request $request)
{
// Allow controllers to return a HtmlFragment or a Response object directly.
if ($page_content instanceof HtmlFragment || $page_content instanceof Response) {
return $page_content;
}
if (!is_array($page_content)) {
$page_content = array('main' => array('#markup' => $page_content));
}
$content = $this->drupalRender($page_content);
$cache = !empty($page_content['#cache']['tags']) ? array('tags' => $page_content['#cache']['tags']) : array();
$fragment = new HtmlFragment($content, $cache);
// A title defined in the return always wins.
if (isset($page_content['#title'])) {
$fragment->setTitle($page_content['#title'], Title::FILTER_XSS_ADMIN);
} else {
if ($route = $request->attributes->get(RouteObjectInterface::ROUTE_OBJECT)) {
$fragment->setTitle($this->titleResolver->getTitle($request, $route), Title::PASS_THROUGH);
}
}
// Add feed links from the page content.
$attached = drupal_render_collect_attached($page_content, TRUE);
if (!empty($attached['drupal_add_feed'])) {
foreach ($attached['drupal_add_feed'] as $feed) {
$feed_link = new FeedLinkElement($feed[1], $this->urlGenerator->generateFromPath($feed[0]));
$fragment->addLinkElement($feed_link);
}
}
return $fragment;
}
/**
* Gather the JS/CSS from the render array, the html head from the band data.
*/
protected function gatherHeaders()
{
// Simple replacement for head
if (isset($this->storage['head'])) {
$this->storage['head'] = str_replace($this->storage['head'], '', drupal_add_html_head());
} else {
$this->storage['head'] = '';
}
$attached = drupal_render_collect_attached($this->storage['output']);
$this->storage['css'] = $attached['css'];
$this->storage['js'] = $attached['js'];
}