Version 1

[yaffs-website] / web / core / modules / file / src / Plugin / Field / FieldFormatter / FileFormatterBase.php

diff --git a/web/core/modules/file/src/Plugin/Field/FieldFormatter/FileFormatterBase.php b/web/core/modules/file/src/Plugin/Field/FieldFormatter/FileFormatterBase.php
new file mode 100644 (file)
index 0000000..ff17323
--- /dev/null
+++ b/web/core/modules/file/src/Plugin/Field/FieldFormatter/FileFormatterBase.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Drupal\file\Plugin\Field\FieldFormatter;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceFormatterBase;
+use Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem;
+
+/**
+ * Base class for file formatters.
+ */
+abstract class FileFormatterBase extends EntityReferenceFormatterBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function needsEntityLoad(EntityReferenceItem $item) {
+    return parent::needsEntityLoad($item) && $item->isDisplayed();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity) {
+    // Only check access if the current file access control handler explicitly
+    // opts in by implementing FileAccessFormatterControlHandlerInterface.
+    $access_handler_class = $entity->getEntityType()->getHandlerClass('access');
+    if (is_subclass_of($access_handler_class, '\Drupal\file\FileAccessFormatterControlHandlerInterface')) {
+      return $entity->access('view', NULL, TRUE);
+    }
+    else {
+      return AccessResult::allowed();
+    }
+  }
+
+}