www.aleph1.co.uk Git - yaffs-website/blob - web/modules/contrib/advagg/src/Ajax/AjaxResponseAttachmentsProcessor.php

   1 <?php
   2
   3 namespace Drupal\advagg\Ajax;
   4
   5 use Drupal\Core\Ajax\AjaxResponse;
   6 use Drupal\Core\Ajax\AjaxResponseAttachmentsProcessor as CoreAjaxResponseAttachmentsProcessor;
   7 use Drupal\Core\Ajax\AddCssCommand;
   8 use Drupal\Core\Ajax\AppendCommand;
   9 use Drupal\Core\Ajax\PrependCommand;
  10 use Drupal\Core\Ajax\SettingsCommand;
  11 use Drupal\Core\Asset\AttachedAssets;
  12 use Drupal\Core\Render\AttachmentsResponseProcessorInterface;
  13 use Symfony\Component\HttpFoundation\Request;
  14
  15 /**
  16  * {@inheritdoc}
  17  */
  18 class AjaxResponseAttachmentsProcessor extends CoreAjaxResponseAttachmentsProcessor implements AttachmentsResponseProcessorInterface {
  19
  20   /**
  21    * {@inheritdoc}
  22    */
  23   protected function buildAttachmentsCommands(AjaxResponse $response, Request $request) {
  24     $ajax_page_state = $request->request->get('ajax_page_state') ?: $request->query->get('ajax_page_state');
  25
  26     // Aggregate CSS/JS if necessary, but only during normal site operation.
  27     $optimize_css = !defined('MAINTENANCE_MODE') && $this->config->get('css.preprocess');
  28     $optimize_js = !defined('MAINTENANCE_MODE') && $this->config->get('js.preprocess');
  29
  30     $attachments = $response->getAttachments();
  31
  32     // Resolve the attached libraries into asset collections.
  33     $assets = new AttachedAssets();
  34     $assets->setLibraries(isset($attachments['library']) ? $attachments['library'] : [])
  35       ->setAlreadyLoadedLibraries(isset($ajax_page_state['libraries']) ? explode(',', $ajax_page_state['libraries']) : [])
  36       ->setSettings(isset($attachments['drupalSettings']) ? $attachments['drupalSettings'] : []);
  37     $css_assets = $this->assetResolver->getCssAssets($assets, $optimize_css);
  38     list($js_assets_header, $js_assets_footer) = $this->assetResolver->getJsAssets($assets, $optimize_js);
  39
  40     // First, AttachedAssets::setLibraries() ensures duplicate libraries are
  41     // removed: it converts it to a set of libraries if necessary. Second,
  42     // AssetResolver::getJsSettings() ensures $assets contains the final set of
  43     // JavaScript settings. AttachmentsResponseProcessorInterface also mandates
  44     // that the response it processes contains the final attachment values, so
  45     // update both the 'library' and 'drupalSettings' attachments accordingly.
  46     $attachments['library'] = $assets->getLibraries();
  47     $attachments['drupalSettings'] = $assets->getSettings();
  48     $response->setAttachments($attachments);
  49     $alter_type = 'ajax';
  50
  51     // Render the HTML to load these files, and add AJAX commands to insert this
  52     // HTML in the page. Settings are handled separately, afterwards.
  53     $settings = [];
  54     if (isset($js_assets_header['drupalSettings'])) {
  55       $settings = $js_assets_header['drupalSettings']['data'];
  56       unset($js_assets_header['drupalSettings']);
  57     }
  58     if (isset($js_assets_footer['drupalSettings'])) {
  59       $settings = $js_assets_footer['drupalSettings']['data'];
  60       unset($js_assets_footer['drupalSettings']);
  61     }
  62
  63     // Prepend commands to add the assets, preserving their relative order.
  64     $resource_commands = [];
  65     $prefetch = [];
  66     if ($css_assets) {
  67       $css_render_array = $this->cssCollectionRenderer->render($css_assets);
  68       if (isset($css_render_array['prefetch'])) {
  69         $prefetch = array_merge($prefetch, $css_render_array['prefetch']);
  70         unset($css_render_array['prefetch']);
  71       }
  72
  73       // Allow other modules to alter the assets before rendering.
  74       // Call hook_advagg_asset_render_alter().
  75       $asset_type = 'css';
  76       $this->moduleHandler->alter('advagg_asset_render', $css_render_array, $alter_type, $asset_type);
  77       $resource_commands[] = new AddCssCommand($this->renderer->renderPlain($css_render_array));
  78     }
  79     if ($js_assets_header) {
  80       $js_header_render_array = $this->jsCollectionRenderer->render($js_assets_header);
  81       if (isset($js_header_render_array['prefetch'])) {
  82         $prefetch = array_merge($prefetch, $js_header_render_array['prefetch']);
  83         unset($js_header_render_array['prefetch']);
  84       }
  85
  86       // Allow other modules to alter the assets before rendering.
  87       // Call hook_advagg_asset_render_alter().
  88       $asset_type = 'js_header';
  89       $this->moduleHandler->alter('advagg_asset_render', $js_header_render_array, $alter_type, $asset_type);
  90       $resource_commands[] = new PrependCommand('head', $this->renderer->renderPlain($js_header_render_array));
  91     }
  92     if ($js_assets_footer) {
  93       $js_footer_render_array = $this->jsCollectionRenderer->render($js_assets_footer);
  94       if (isset($js_footer_render_array['prefetch'])) {
  95         $prefetch = array_merge($prefetch, $js_footer_render_array['prefetch']);
  96         unset($js_footer_render_array['prefetch']);
  97       }
  98
  99       // Allow other modules to alter the assets before rendering.
 100       // Call hook_advagg_asset_render_alter().
 101       $asset_type = 'js_footer';
 102       $this->moduleHandler->alter('advagg_asset_render', $js_footer_render_array, $alter_type, $asset_type);
 103       $resource_commands[] = new AppendCommand('body', $this->renderer->renderPlain($js_footer_render_array));
 104     }
 105     if ($prefetch) {
 106       $prefetch = array_unique($prefetch, SORT_REGULAR);
 107
 108       // Allow other modules to alter the assets before rendering.
 109       // Call hook_advagg_asset_render_alter().
 110       $asset_type = 'prefetch';
 111       $this->moduleHandler->alter('advagg_asset_render', $prefetch, $alter_type, $asset_type);
 112       $resource_commands[] = new PrependCommand('head', $this->renderer->renderPlain($prefetch));
 113     }
 114     foreach (array_reverse($resource_commands) as $resource_command) {
 115       $response->addCommand($resource_command, TRUE);
 116     }
 117
 118     // Prepend a command to merge changes and additions to drupalSettings.
 119     if (!empty($settings)) {
 120       // During Ajax requests basic path-specific settings are excluded from
 121       // new drupalSettings values. The original page where this request comes
 122       // from already has the right values. An Ajax request would update them
 123       // with values for the Ajax request and incorrectly override the page's
 124       // values.
 125       // @see system_js_settings_alter()
 126       unset($settings['path']);
 127       $response->addCommand(new SettingsCommand($settings, TRUE), TRUE);
 128     }
 129
 130     $commands = $response->getCommands();
 131     $this->moduleHandler->alter('ajax_render', $commands);
 132
 133     return $commands;
 134   }
 135
 136 }