group-8.x-1.x-dev/src/Entity/Routing/GroupRouteProvider.php

<?php

namespace Drupal\group\Entity\Routing;

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\Routing\DefaultHtmlRouteProvider;
use Symfony\Component\Routing\Route;

/**
 * Provides routes for groups.
 */
class GroupRouteProvider extends DefaultHtmlRouteProvider {

  /**
   * {@inheritdoc}
   */
  protected function getAddPageRoute(EntityTypeInterface $entity_type) {
    if ($route = parent::getAddPageRoute($entity_type)) {
      $route->setOption('_group_operation_route', TRUE);
      return $route;
    }
    return NULL;
  }

  /**
   * {@inheritdoc}
   */
  protected function getAddFormRoute(EntityTypeInterface $entity_type) {
    if ($route = parent::getAddFormRoute($entity_type)) {
      $route->setOption('_group_operation_route', TRUE);
      $route->setDefault('_controller', '\Drupal\group\Entity\Controller\GroupController::addForm');
      $route->setDefault('_title_callback', '\Drupal\group\Entity\Controller\GroupController::addFormTitle');
      return $route;
    }
    return NULL;
  }

  /**
   * {@inheritdoc}
   */
  protected function getEditFormRoute(EntityTypeInterface $entity_type) {
    if ($route = parent::getEditFormRoute($entity_type)) {
      $route->setOption('_group_operation_route', TRUE);
      return $route;
    }
    return NULL;
  }

  /**
   * {@inheritdoc}
   */
  protected function getDeleteFormRoute(EntityTypeInterface $entity_type) {
    if ($route = parent::getDeleteFormRoute($entity_type)) {
      $route->setOption('_group_operation_route', TRUE);
      return $route;
    }
    return NULL;
  }

  /**
   * {@inheritdoc}
   */
  protected function getCollectionRoute(EntityTypeInterface $entity_type) {
    if ($entity_type->hasLinkTemplate('collection') && $entity_type->hasListBuilderClass()) {
      /** @var \Drupal\Core\StringTranslation\TranslatableMarkup $label */
      $label = $entity_type->getCollectionLabel();

      $route = new Route($entity_type->getLinkTemplate('collection'));
      $route
        ->addDefaults([
          '_entity_list' => $entity_type->id(),
          '_title' => $label->getUntranslatedString(),
          '_title_arguments' => $label->getArguments(),
          '_title_context' => $label->getOption('context'),
        ])
        ->setRequirement('_permission', 'access group overview');

      return $route;
    }
    return NULL;
  }

}