www.aleph1.co.uk Git - yaffs-website/blob - web/core/modules/comment/src/CommentBreadcrumbBuilder.php

   1 <?php
   2
   3 namespace Drupal\comment;
   4
   5 use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
   6 use Drupal\Core\Breadcrumb\Breadcrumb;
   7 use Drupal\Core\Entity\EntityManagerInterface;
   8 use Drupal\Core\Link;
   9 use Drupal\Core\Routing\RouteMatchInterface;
  10 use Drupal\Core\StringTranslation\StringTranslationTrait;
  11
  12 /**
  13  * Class to define the comment breadcrumb builder.
  14  */
  15 class CommentBreadcrumbBuilder implements BreadcrumbBuilderInterface {
  16   use StringTranslationTrait;
  17
  18   /**
  19    * The comment storage.
  20    *
  21    * @var \Drupal\Core\Entity\EntityStorageInterface
  22    */
  23   protected $storage;
  24
  25   /**
  26    * Constructs the CommentBreadcrumbBuilder.
  27    *
  28    * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
  29    *   The entity manager.
  30    */
  31   public function __construct(EntityManagerInterface $entity_manager) {
  32     $this->storage = $entity_manager->getStorage('comment');
  33   }
  34
  35   /**
  36    * {@inheritdoc}
  37    */
  38   public function applies(RouteMatchInterface $route_match) {
  39     return $route_match->getRouteName() == 'comment.reply' && $route_match->getParameter('entity');
  40   }
  41
  42   /**
  43    * {@inheritdoc}
  44    */
  45   public function build(RouteMatchInterface $route_match) {
  46     $breadcrumb = new Breadcrumb();
  47     $breadcrumb->addCacheContexts(['route']);
  48     $breadcrumb->addLink(Link::createFromRoute($this->t('Home'), '<front>'));
  49
  50     $entity = $route_match->getParameter('entity');
  51     $breadcrumb->addLink(new Link($entity->label(), $entity->urlInfo()));
  52     $breadcrumb->addCacheableDependency($entity);
  53
  54     if (($pid = $route_match->getParameter('pid')) && ($comment = $this->storage->load($pid))) {
  55       /** @var \Drupal\comment\CommentInterface $comment */
  56       $breadcrumb->addCacheableDependency($comment);
  57       // Display link to parent comment.
  58       // @todo Clean-up permalink in https://www.drupal.org/node/2198041
  59       $breadcrumb->addLink(new Link($comment->getSubject(), $comment->urlInfo()));
  60     }
  61
  62     return $breadcrumb;
  63   }
  64
  65 }