72 lines
2.4 KiB
PHP
72 lines
2.4 KiB
PHP
<?php
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namespace Drupal\comment;
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use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
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use Drupal\Core\Breadcrumb\Breadcrumb;
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use Drupal\Core\Cache\CacheableMetadata;
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use Drupal\Core\Entity\EntityTypeManagerInterface;
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use Drupal\Core\Link;
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use Drupal\Core\Routing\RouteMatchInterface;
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use Drupal\Core\StringTranslation\StringTranslationTrait;
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/**
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* Class to define the comment breadcrumb builder.
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*/
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class CommentBreadcrumbBuilder implements BreadcrumbBuilderInterface {
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use StringTranslationTrait;
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/**
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* The entity type manager.
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*
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* @var \Drupal\Core\Entity\EntityTypeManagerInterface
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*/
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protected $entityTypeManager;
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/**
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* Constructs the CommentBreadcrumbBuilder.
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*
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* @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
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* The entity type manager.
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*/
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public function __construct(EntityTypeManagerInterface $entity_type_manager) {
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$this->entityTypeManager = $entity_type_manager;
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}
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/**
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* {@inheritdoc}
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*/
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public function applies(RouteMatchInterface $route_match, ?CacheableMetadata $cacheable_metadata = NULL) {
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// @todo Remove null safe operator in Drupal 12.0.0, see
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// https://www.drupal.org/project/drupal/issues/3459277.
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$cacheable_metadata?->addCacheContexts(['route']);
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return $route_match->getRouteName() == 'comment.reply' && $route_match->getParameter('entity');
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}
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/**
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* {@inheritdoc}
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*/
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public function build(RouteMatchInterface $route_match) {
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$breadcrumb = new Breadcrumb();
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// @todo Remove in Drupal 12.0.0, will be added from ::applies(). See
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// https://www.drupal.org/project/drupal/issues/3459277
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$breadcrumb->addCacheContexts(['route']);
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$breadcrumb->addLink(Link::createFromRoute($this->t('Home'), '<front>'));
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$entity = $route_match->getParameter('entity');
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$breadcrumb->addLink(new Link($entity->label(), $entity->toUrl()));
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$breadcrumb->addCacheableDependency($entity);
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if (($pid = $route_match->getParameter('pid')) && ($comment = $this->entityTypeManager->getStorage('comment')->load($pid))) {
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/** @var \Drupal\comment\CommentInterface $comment */
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$breadcrumb->addCacheableDependency($comment);
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// Display link to parent comment.
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// @todo Clean-up permalink in https://www.drupal.org/node/2198041
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$breadcrumb->addLink(new Link($comment->getSubject(), $comment->toUrl()));
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}
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return $breadcrumb;
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}
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}
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