--- /dev/null
+<?php
+
+namespace Drupal\Core\Ajax;
+
+use Drupal\Core\Asset\AssetCollectionRendererInterface;
+use Drupal\Core\Asset\AssetResolverInterface;
+use Drupal\Core\Asset\AttachedAssets;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Render\AttachmentsInterface;
+use Drupal\Core\Render\AttachmentsResponseProcessorInterface;
+use Drupal\Core\Render\RendererInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\RequestStack;
+
+/**
+ * Processes attachments of AJAX responses.
+ *
+ * @see \Drupal\Core\Ajax\AjaxResponse
+ * @see \Drupal\Core\Render\MainContent\AjaxRenderer
+ */
+class AjaxResponseAttachmentsProcessor implements AttachmentsResponseProcessorInterface {
+
+ /**
+ * The asset resolver service.
+ *
+ * @var \Drupal\Core\Asset\AssetResolverInterface
+ */
+ protected $assetResolver;
+
+ /**
+ * A config object for the system performance configuration.
+ *
+ * @var \Drupal\Core\Config\Config
+ */
+ protected $config;
+
+ /**
+ * The CSS asset collection renderer service.
+ *
+ * @var \Drupal\Core\Asset\AssetCollectionRendererInterface
+ */
+ protected $cssCollectionRenderer;
+
+ /**
+ * The JS asset collection renderer service.
+ *
+ * @var \Drupal\Core\Asset\AssetCollectionRendererInterface
+ */
+ protected $jsCollectionRenderer;
+
+ /**
+ * The request stack.
+ *
+ * @var \Symfony\Component\HttpFoundation\RequestStack
+ */
+ protected $requestStack;
+
+ /**
+ * The renderer.
+ *
+ * @var \Drupal\Core\Render\RendererInterface
+ */
+ protected $renderer;
+
+ /**
+ * The module handler.
+ *
+ * @var \Drupal\Core\Extension\ModuleHandlerInterface
+ */
+ protected $moduleHandler;
+
+ /**
+ * Constructs a AjaxResponseAttachmentsProcessor object.
+ *
+ * @param \Drupal\Core\Asset\AssetResolverInterface $asset_resolver
+ * An asset resolver.
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * A config factory for retrieving required config objects.
+ * @param \Drupal\Core\Asset\AssetCollectionRendererInterface $css_collection_renderer
+ * The CSS asset collection renderer.
+ * @param \Drupal\Core\Asset\AssetCollectionRendererInterface $js_collection_renderer
+ * The JS asset collection renderer.
+ * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
+ * The request stack.
+ * @param \Drupal\Core\Render\RendererInterface $renderer
+ * The renderer.
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The module handler.
+ */
+ public function __construct(AssetResolverInterface $asset_resolver, ConfigFactoryInterface $config_factory, AssetCollectionRendererInterface $css_collection_renderer, AssetCollectionRendererInterface $js_collection_renderer, RequestStack $request_stack, RendererInterface $renderer, ModuleHandlerInterface $module_handler) {
+ $this->assetResolver = $asset_resolver;
+ $this->config = $config_factory->get('system.performance');
+ $this->cssCollectionRenderer = $css_collection_renderer;
+ $this->jsCollectionRenderer = $js_collection_renderer;
+ $this->requestStack = $request_stack;
+ $this->renderer = $renderer;
+ $this->moduleHandler = $module_handler;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function processAttachments(AttachmentsInterface $response) {
+ // @todo Convert to assertion once https://www.drupal.org/node/2408013 lands
+ if (!$response instanceof AjaxResponse) {
+ throw new \InvalidArgumentException('\Drupal\Core\Ajax\AjaxResponse instance expected.');
+ }
+
+ $request = $this->requestStack->getCurrentRequest();
+
+ if ($response->getContent() == '{}') {
+ $response->setData($this->buildAttachmentsCommands($response, $request));
+ }
+
+ return $response;
+ }
+
+ /**
+ * Prepares the AJAX commands to attach assets.
+ *
+ * @param \Drupal\Core\Ajax\AjaxResponse $response
+ * The AJAX response to update.
+ * @param \Symfony\Component\HttpFoundation\Request $request
+ * The request object that the AJAX is responding to.
+ *
+ * @return array
+ * An array of commands ready to be returned as JSON.
+ */
+ protected function buildAttachmentsCommands(AjaxResponse $response, Request $request) {
+ $ajax_page_state = $request->request->get('ajax_page_state');
+
+ // Aggregate CSS/JS if necessary, but only during normal site operation.
+ $optimize_css = !defined('MAINTENANCE_MODE') && $this->config->get('css.preprocess');
+ $optimize_js = !defined('MAINTENANCE_MODE') && $this->config->get('js.preprocess');
+
+ $attachments = $response->getAttachments();
+
+ // Resolve the attached libraries into asset collections.
+ $assets = new AttachedAssets();
+ $assets->setLibraries(isset($attachments['library']) ? $attachments['library'] : [])
+ ->setAlreadyLoadedLibraries(isset($ajax_page_state['libraries']) ? explode(',', $ajax_page_state['libraries']) : [])
+ ->setSettings(isset($attachments['drupalSettings']) ? $attachments['drupalSettings'] : []);
+ $css_assets = $this->assetResolver->getCssAssets($assets, $optimize_css);
+ list($js_assets_header, $js_assets_footer) = $this->assetResolver->getJsAssets($assets, $optimize_js);
+
+ // First, AttachedAssets::setLibraries() ensures duplicate libraries are
+ // removed: it converts it to a set of libraries if necessary. Second,
+ // AssetResolver::getJsSettings() ensures $assets contains the final set of
+ // JavaScript settings. AttachmentsResponseProcessorInterface also mandates
+ // that the response it processes contains the final attachment values, so
+ // update both the 'library' and 'drupalSettings' attachments accordingly.
+ $attachments['library'] = $assets->getLibraries();
+ $attachments['drupalSettings'] = $assets->getSettings();
+ $response->setAttachments($attachments);
+
+ // Render the HTML to load these files, and add AJAX commands to insert this
+ // HTML in the page. Settings are handled separately, afterwards.
+ $settings = [];
+ if (isset($js_assets_header['drupalSettings'])) {
+ $settings = $js_assets_header['drupalSettings']['data'];
+ unset($js_assets_header['drupalSettings']);
+ }
+ if (isset($js_assets_footer['drupalSettings'])) {
+ $settings = $js_assets_footer['drupalSettings']['data'];
+ unset($js_assets_footer['drupalSettings']);
+ }
+
+ // Prepend commands to add the assets, preserving their relative order.
+ $resource_commands = [];
+ if ($css_assets) {
+ $css_render_array = $this->cssCollectionRenderer->render($css_assets);
+ $resource_commands[] = new AddCssCommand($this->renderer->renderPlain($css_render_array));
+ }
+ if ($js_assets_header) {
+ $js_header_render_array = $this->jsCollectionRenderer->render($js_assets_header);
+ $resource_commands[] = new PrependCommand('head', $this->renderer->renderPlain($js_header_render_array));
+ }
+ if ($js_assets_footer) {
+ $js_footer_render_array = $this->jsCollectionRenderer->render($js_assets_footer);
+ $resource_commands[] = new AppendCommand('body', $this->renderer->renderPlain($js_footer_render_array));
+ }
+ foreach (array_reverse($resource_commands) as $resource_command) {
+ $response->addCommand($resource_command, TRUE);
+ }
+
+ // Prepend a command to merge changes and additions to drupalSettings.
+ if (!empty($settings)) {
+ // During Ajax requests basic path-specific settings are excluded from
+ // new drupalSettings values. The original page where this request comes
+ // from already has the right values. An Ajax request would update them
+ // with values for the Ajax request and incorrectly override the page's
+ // values.
+ // @see system_js_settings_alter()
+ unset($settings['path']);
+ $response->addCommand(new SettingsCommand($settings, TRUE), TRUE);
+ }
+
+ $commands = $response->getCommands();
+ $this->moduleHandler->alter('ajax_render', $commands);
+
+ return $commands;
+ }
+
+}
projects / yaffs-website / blobdiff