MediaRouteProvider.php

<?php

namespace Drupal\media\Routing;

use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Entity\EntityFieldManagerInterface;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Entity\Routing\AdminHtmlRouteProvider;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides HTML routes for media pages.
 */
class MediaRouteProvider extends AdminHtmlRouteProvider {
  
  /**
   * The media settings config.
   *
   * @var \Drupal\Core\Config\ImmutableConfig
   */
  protected $config;
  
  /**
   * {@inheritdoc}
   */
  public function __construct(EntityTypeManagerInterface $entity_type_manager, EntityFieldManagerInterface $entity_field_manager, ConfigFactoryInterface $config_factory) {
    parent::__construct($entity_type_manager, $entity_field_manager);
    $this->config = $config_factory->get('media.settings');
  }
  
  /**
   * {@inheritdoc}
   */
  public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
    return new static($container->get('entity_type.manager'), $container->get('entity_field.manager'), $container->get('config.factory'));
  }
  
  /**
   * {@inheritdoc}
   */
  protected function getCanonicalRoute(EntityTypeInterface $entity_type) {
    if ($this->config
      ->get('standalone_url')) {
      return parent::getCanonicalRoute($entity_type);
    }
    else {
      return parent::getEditFormRoute($entity_type);
    }
  }

}