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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\Cache\Context\MenuActiveTrailsCacheContext. | |
| */ | |
| namespace Drupal\Core\Cache\Context; | |
| use Drupal\Core\Cache\CacheableMetadata; | |
| use Symfony\Component\DependencyInjection\ContainerAware; | |
| /** | |
| * Defines the MenuActiveTrailsCacheContext service. | |
| * | |
| * This class is container-aware to avoid initializing the 'menu.active_trails' | |
| * service (and its dependencies) when it is not necessary. | |
| */ | |
| class MenuActiveTrailsCacheContext extends ContainerAware implements CalculatedCacheContextInterface { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public static function getLabel() { | |
| return t("Active menu trail"); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function getContext($menu_name = NULL) { | |
| if (!$menu_name) { | |
| throw new \LogicException('No menu name provided for menu.active_trails cache context.'); | |
| } | |
| $active_trail = $this->container->get('menu.active_trail') | |
| ->getActiveTrailIds($menu_name); | |
| return 'menu_trail.' . $menu_name . '|' . implode('|', $active_trail); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function getCacheableMetadata($menu_name = NULL) { | |
| if (!$menu_name) { | |
| throw new \LogicException('No menu name provided for menu.active_trails cache context.'); | |
| } | |
| $cacheable_metadata = new CacheableMetadata(); | |
| return $cacheable_metadata->setCacheTags(["config:system.menu.$menu_name"]); | |
| } | |
| } |