delivery-8.x-1.x-dev/src/Access/DeliveryContentTranslationOverviewAccess.php

<?php

namespace Drupal\delivery\Access;

use Drupal\content_translation\Access\ContentTranslationOverviewAccess;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\workspaces\WorkspaceManagerInterface;

/**
 * Customized translation overview access handler.
 *
 * Block access if the current workspace has only one language assigned.
 */
class DeliveryContentTranslationOverviewAccess extends ContentTranslationOverviewAccess {

  protected $workspaceManager;

  public function __construct(EntityTypeManagerInterface $entity_type_manager, WorkspaceManagerInterface $workspaceManager) {
    parent::__construct($entity_type_manager);
    $this->workspaceManager = $workspaceManager;
  }

  public function access(RouteMatchInterface $route_match, AccountInterface $account, $entity_type_id) {
    $currentWorkspace = $this->workspaceManager->getActiveWorkspace();
    $entity = $route_match->getParameter($entity_type_id);
    if (!$entity->access('view')) {
      return AccessResult::forbidden()->addCacheableDependency($entity)->addCacheContexts(['workspace']);
    }

    $result = parent::access($route_match, $account, $entity_type_id);
    if (!empty($currentWorkspace->secondary_languages) && !empty($currentWorkspace->primary_language)) {
      $access = AccessResult::forbiddenIf((
        $currentWorkspace->secondary_languages->count() === 0 && $currentWorkspace->primary_language->count() > 0
      ), 'Current workspace does not allow multiple languages.');
      $access->addCacheContexts(['workspace']);
      $result = $result->orIf($access);
    }

    return $result;
  }

}