--- /dev/null
+<?php
+
+namespace Drupal\language;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Defines the access control handler for the language entity type.
+ *
+ * @see \Drupal\language\Entity\Language
+ */
+class LanguageAccessControlHandler extends EntityAccessControlHandler {
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+ switch ($operation) {
+ case 'view':
+ return parent::checkAccess($entity, $operation, $account);
+
+ case 'update':
+ /* @var \Drupal\Core\Language\LanguageInterface $entity */
+ return AccessResult::allowedIf(!$entity->isLocked())->addCacheableDependency($entity)
+ ->andIf(parent::checkAccess($entity, $operation, $account));
+
+ case 'delete':
+ /* @var \Drupal\Core\Language\LanguageInterface $entity */
+ return AccessResult::allowedIf(!$entity->isLocked())->addCacheableDependency($entity)
+ ->andIf(AccessResult::allowedIf(!$entity->isDefault())->addCacheableDependency($entity))
+ ->andIf(parent::checkAccess($entity, $operation, $account));
+
+ default:
+ // No opinion.
+ return AccessResult::neutral();
+ }
+ }
+
+}