--- /dev/null
+<?php
+
+namespace Drupal\entityqueue\Plugin\Derivative;
+
+use Drupal\Component\Plugin\Derivative\DeriverBase;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\Core\StringTranslation\TranslationInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides local task definitions for all entity bundles.
+ */
+class EntityqueueLocalTask extends DeriverBase implements ContainerDeriverInterface {
+
+ use StringTranslationTrait;
+
+ /**
+ * The entity type manager.
+ *
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * Creates an EntityqueueLocalTask object.
+ *
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * The entity manager.
+ * @param \Drupal\Core\StringTranslation\TranslationInterface $string_translation
+ * The translation manager.
+ */
+ public function __construct(EntityTypeManagerInterface $entity_type_manager, TranslationInterface $string_translation) {
+ $this->entityTypeManager = $entity_type_manager;
+ $this->stringTranslation = $string_translation;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, $base_plugin_id) {
+ return new static(
+ $container->get('entity_type.manager'),
+ $container->get('string_translation')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDerivativeDefinitions($base_plugin_definition) {
+ $this->derivatives = [];
+
+ foreach ($this->entityTypeManager->getDefinitions() as $entity_type_id => $entity_type) {
+ if ($entity_type->hasViewBuilderClass() && $entity_type->hasLinkTemplate('canonical')) {
+ $entityqueue_route_name = "entity.$entity_type_id.entityqueue";
+ $this->derivatives[$entityqueue_route_name] = [
+ 'entity_type' => $entity_type_id,
+ 'title' => $this->t('Entityqueue'),
+ 'route_name' => $entityqueue_route_name,
+ 'base_route' => "entity.$entity_type_id.canonical",
+ // Ensure that the entityqueue tab is at the end of the list.
+ 'weight' => 21,
+ ] + $base_plugin_definition;
+ }
+ }
+
+ return parent::getDerivativeDefinitions($base_plugin_definition);
+ }
+
+}