MenuLinkListBuilder.php

<?php

namespace Drupal\menu_link_content;

use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\EntityListBuilder;
use Drupal\Core\Entity\EntityStorageInterface;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Routing\RedirectDestinationInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides a menu link list builder.
 */
class MenuLinkListBuilder extends EntityListBuilder {
    
    /**
     * The redirect destination.
     *
     * @var \Drupal\Core\Routing\RedirectDestinationInterface
     */
    protected $redirectDestination;
    
    /**
     * {@inheritdoc}
     */
    public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
        return new static($entity_type, $container->get('entity_type.manager')
            ->getStorage($entity_type->id()), $container->get('redirect.destination'));
    }
    
    /**
     * Constructs a new instance.
     *
     * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
     *   The entity type definition.
     * @param \Drupal\Core\Entity\EntityStorageInterface $storage
     *   The entity storage class.
     * @param \Drupal\Core\Routing\RedirectDestinationInterface $redirect_destination
     *   The redirect destination.
     */
    public function __construct(EntityTypeInterface $entity_type, EntityStorageInterface $storage, RedirectDestinationInterface $redirect_destination) {
        parent::__construct($entity_type, $storage);
        $this->redirectDestination = $redirect_destination;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getDefaultOperations(EntityInterface $entity) {
        $operations = parent::getDefaultOperations($entity);
        $destination = $this->redirectDestination
            ->get();
        foreach ($operations as $key => $operation) {
            $operations[$key]['query']['destination'] = $destination;
        }
        return $operations;
    }
    
    /**
     * {@inheritdoc}
     */
    public function render() {
        throw new \LogicException('This list builder can only provide operations. It does not build lists.');
    }

}