--- /dev/null
+<?php
+
+namespace Drupal\image;
+
+use Drupal\Core\Config\Entity\ConfigEntityListBuilder;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Url;
+
+/**
+ * Defines a class to build a listing of image style entities.
+ *
+ * @see \Drupal\image\Entity\ImageStyle
+ */
+class ImageStyleListBuilder extends ConfigEntityListBuilder {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildHeader() {
+ $header['label'] = $this->t('Style 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) {
+ $flush = [
+ 'title' => t('Flush'),
+ 'weight' => 200,
+ 'url' => $entity->urlInfo('flush-form'),
+ ];
+
+ return parent::getDefaultOperations($entity) + [
+ 'flush' => $flush,
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function render() {
+ $build = parent::render();
+ $build['table']['#empty'] = $this->t('There are currently no styles. <a href=":url">Add a new one</a>.', [
+ ':url' => Url::fromRoute('image.style_add')->toString(),
+ ]);
+ return $build;
+ }
+
+}