aleph1.co.uk Git - yaffs-website/blob - web/modules/contrib/advagg/src/Render/HtmlResponseAttachmentsProcessor.php

   1 <?php
   2
   3 namespace Drupal\advagg\Render;
   4
   5 use Drupal\Core\Asset\AttachedAssetsInterface;
   6 use Drupal\Core\Render\AttachmentsResponseProcessorInterface;
   7 use Drupal\Core\Render\HtmlResponseAttachmentsProcessor as CoreHtmlResponseAttachmentsProcessor;
   8
   9 /**
  10  * Processes attachments of HTML responses.
  11  *
  12  * This class is used by the rendering service to process the #attached part of
  13  * the render array, for HTML responses.
  14  *
  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.
  19  *
  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
  25  */
  26 class HtmlResponseAttachmentsProcessor extends CoreHtmlResponseAttachmentsProcessor implements AttachmentsResponseProcessorInterface {
  27
  28   /**
  29    * {@inheritdoc}
  30    */
  31   protected function processAssetLibraries(AttachedAssetsInterface $assets, array $placeholders) {
  32     $variables = ['prefetch' => []];
  33     $render_type = 'html';
  34
  35     // Print styles - if present.
  36     if (isset($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']);
  42
  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, $asset_type);
  47     }
  48
  49     // Print scripts - if any are present.
  50     if (isset($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']);
  57
  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);
  62
  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']);
  66
  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);
  71     }
  72
  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']);
  81     }
  82     else {
  83       $variables['scripts'] = array_merge($prefetch, $variables['scripts']);
  84     }
  85     unset($variables['prefetch']);
  86     return $variables;
  87   }
  88
  89 }