--- /dev/null
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\node\NodeInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for reverting a node revision for a single translation.
+ */
+class NodeRevisionRevertTranslationForm extends NodeRevisionRevertForm {
+
+ /**
+ * The language to be reverted.
+ *
+ * @var string
+ */
+ protected $langcode;
+
+ /**
+ * The language manager.
+ *
+ * @var \Drupal\Core\Language\LanguageManagerInterface
+ */
+ protected $languageManager;
+
+ /**
+ * Constructs a new NodeRevisionRevertTranslationForm.
+ *
+ * @param \Drupal\Core\Entity\EntityStorageInterface $node_storage
+ * The node storage.
+ * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+ * The date formatter service.
+ * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+ * The language manager.
+ */
+ public function __construct(EntityStorageInterface $node_storage, DateFormatterInterface $date_formatter, LanguageManagerInterface $language_manager) {
+ parent::__construct($node_storage, $date_formatter);
+ $this->languageManager = $language_manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('entity.manager')->getStorage('node'),
+ $container->get('date.formatter'),
+ $container->get('language_manager')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'node_revision_revert_translation_confirm';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getQuestion() {
+ return t('Are you sure you want to revert @language translation to the revision from %revision-date?', ['@language' => $this->languageManager->getLanguageName($this->langcode), '%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime())]);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDescription() {
+ return '';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state, $node_revision = NULL, $langcode = NULL) {
+ $this->langcode = $langcode;
+ $form = parent::buildForm($form, $form_state, $node_revision);
+
+ $form['revert_untranslated_fields'] = [
+ '#type' => 'checkbox',
+ '#title' => $this->t('Revert content shared among translations'),
+ '#default_value' => FALSE,
+ ];
+
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function prepareRevertedRevision(NodeInterface $revision, FormStateInterface $form_state) {
+ $revert_untranslated_fields = $form_state->getValue('revert_untranslated_fields');
+
+ /** @var \Drupal\node\NodeInterface $default_revision */
+ $latest_revision = $this->nodeStorage->load($revision->id());
+ $latest_revision_translation = $latest_revision->getTranslation($this->langcode);
+
+ $revision_translation = $revision->getTranslation($this->langcode);
+
+ foreach ($latest_revision_translation->getFieldDefinitions() as $field_name => $definition) {
+ if ($definition->isTranslatable() || $revert_untranslated_fields) {
+ $latest_revision_translation->set($field_name, $revision_translation->get($field_name)->getValue());
+ }
+ }
+
+ $latest_revision_translation->setNewRevision();
+ $latest_revision_translation->isDefaultRevision(TRUE);
+
+ return $latest_revision_translation;
+ }
+
+}