3 namespace Drupal\advagg\Render;
5 use Drupal\Core\Asset\AttachedAssetsInterface;
6 use Drupal\Core\Render\AttachmentsResponseProcessorInterface;
7 use Drupal\Core\Render\HtmlResponseAttachmentsProcessor as CoreHtmlResponseAttachmentsProcessor;
10 * Processes attachments of HTML responses.
12 * This class is used by the rendering service to process the #attached part of
13 * the render array, for HTML responses.
15 * To render attachments to HTML for testing without a controller, use the
16 * 'bare_html_page_renderer' service to generate a
17 * Drupal\Core\Render\HtmlResponse object. Then use its getContent(),
18 * getStatusCode(), and/or the headers property to access the result.
20 * @see template_preprocess_html()
21 * @see \Drupal\Core\Render\AttachmentsResponseProcessorInterface
22 * @see \Drupal\Core\Render\BareHtmlPageRenderer
23 * @see \Drupal\Core\Render\HtmlResponse
24 * @see \Drupal\Core\Render\MainContent\HtmlRenderer
26 class HtmlResponseAttachmentsProcessor extends CoreHtmlResponseAttachmentsProcessor implements AttachmentsResponseProcessorInterface {
31 protected function processAssetLibraries(AttachedAssetsInterface $assets, array $placeholders) {
32 $variables = ['prefetch' => []];
33 $render_type = 'html';
35 // Print styles - if present.
36 if (isset($placeholders['styles'])) {
37 // Optimize CSS if necessary, but only during normal site operation.
38 $optimize_css = !defined('MAINTENANCE_MODE') && $this->config->get('css.preprocess');
39 $variables['styles'] = $this->cssCollectionRenderer->render($this->assetResolver->getCssAssets($assets, $optimize_css));
40 $variables['prefetch'] = isset($variables['styles']['prefetch']) ? $variables['styles']['prefetch'] : [];
41 unset($variables['styles']['prefetch']);
43 // Allow other modules to alter the assets before rendering.
44 // Call hook_advagg_asset_render_alter().
45 $asset_type = 'styles';
46 $this->moduleHandler->alter('advagg_asset_render', $variables['styles'], $render_type, $asset_type);
49 // Print scripts - if any are present.
50 if (isset($placeholders['scripts']) || isset($placeholders['scripts_bottom'])) {
51 // Optimize JS if necessary, but only during normal site operation.
52 $optimize_js = !defined('MAINTENANCE_MODE') && !\Drupal::state()->get('system.maintenance_mode') && $this->config->get('js.preprocess');
53 list($js_assets_header, $js_assets_footer) = $this->assetResolver->getJsAssets($assets, $optimize_js);
54 $variables['scripts'] = $this->jsCollectionRenderer->render($js_assets_header);
55 $variables['prefetch'] += isset($variables['scripts']['prefetch']) ? $variables['scripts']['prefetch'] : [];
56 unset($variables['scripts']['prefetch']);
58 // Allow other modules to alter the assets before rendering.
59 // Call hook_advagg_asset_render_alter().
60 $asset_type = 'scripts';
61 $this->moduleHandler->alter('advagg_asset_render', $variables['scripts'], $render_type, $asset_type);
63 $variables['scripts_bottom'] = $this->jsCollectionRenderer->render($js_assets_footer);
64 $variables['prefetch'] += isset($variables['scripts_bottom']['prefetch']) ? $variables['scripts_bottom']['prefetch'] : [];
65 unset($variables['scripts_bottom']['prefetch']);
67 // Allow other modules to alter the assets before rendering.
68 // Call hook_advagg_asset_render_alter().
69 $asset_type = 'scripts_bottom';
70 $this->moduleHandler->alter('advagg_asset_render', $variables['scripts_bottom'], $render_type, $asset_type);
73 // Merge prefetch and styles or scripts.
74 $prefetch = array_unique($variables['prefetch'], SORT_REGULAR);
75 // Allow other modules to alter the assets before rendering.
76 // Call hook_advagg_asset_render_alter().
77 $asset_type = 'prefetch';
78 $this->moduleHandler->alter('advagg_asset_render', $prefetch, $render_type, $asset_type);
79 if (isset($placeholders['styles'])) {
80 $variables['styles'] = array_merge($prefetch, $variables['styles']);
83 $variables['scripts'] = array_merge($prefetch, $variables['scripts']);
85 unset($variables['prefetch']);