--- /dev/null
+<?php
+
+namespace Drupal\user;
+
+use Drupal\Core\Config\Entity\DraggableListBuilder;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Defines a class to build a listing of user role entities.
+ *
+ * @see \Drupal\user\Entity\Role
+ */
+class RoleListBuilder extends DraggableListBuilder {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'user_admin_roles_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildHeader() {
+ $header['label'] = t('Name');
+ return $header + parent::buildHeader();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildRow(EntityInterface $entity) {
+ $row['label'] = $entity->label();
+ return $row + parent::buildRow($entity);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDefaultOperations(EntityInterface $entity) {
+ $operations = parent::getDefaultOperations($entity);
+
+ if ($entity->hasLinkTemplate('edit-permissions-form')) {
+ $operations['permissions'] = [
+ 'title' => t('Edit permissions'),
+ 'weight' => 20,
+ 'url' => $entity->urlInfo('edit-permissions-form'),
+ ];
+ }
+ return $operations;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ parent::submitForm($form, $form_state);
+
+ drupal_set_message(t('The role settings have been updated.'));
+ }
+
+}