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[yaffs-website] / web / core / modules / comment / src / Plugin / Field / FieldFormatter / CommentPermalinkFormatter.php

diff --git a/web/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentPermalinkFormatter.php b/web/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentPermalinkFormatter.php
new file mode 100644 (file)
index 0000000..0f34412
--- /dev/null
+++ b/web/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentPermalinkFormatter.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Drupal\comment\Plugin\Field\FieldFormatter;
+
+use Drupal\Component\Utility\Unicode;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\Field\Plugin\Field\FieldFormatter\StringFormatter;
+
+/**
+ * Plugin implementation of the 'comment_permalink' formatter.
+ *
+ * All the other entities use 'canonical' or 'revision' links to link the entity
+ * to itself but comments use permalink URL.
+ *
+ * @FieldFormatter(
+ *   id = "comment_permalink",
+ *   label = @Translation("Comment Permalink"),
+ *   field_types = {
+ *     "string",
+ *     "uri",
+ *   },
+ *   quickedit = {
+ *     "editor" = "plain_text"
+ *   }
+ * )
+ */
+class CommentPermalinkFormatter extends StringFormatter {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEntityUrl(EntityInterface $comment) {
+    /* @var $comment \Drupal\comment\CommentInterface */
+    $comment_permalink = $comment->permalink();
+    if ($comment->hasField('comment_body') && ($body = $comment->get('comment_body')->value)) {
+      $attributes = $comment_permalink->getOption('attributes') ?: [];
+      $attributes += ['title' => Unicode::truncate($body, 128)];
+      $comment_permalink->setOption('attributes', $attributes);
+    }
+    return $comment_permalink;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function isApplicable(FieldDefinitionInterface $field_definition) {
+    return parent::isApplicable($field_definition) && $field_definition->getTargetEntityTypeId() === 'comment' && $field_definition->getName() === 'subject';
+  }
+
+}