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<?php
namespace Drupal\user\Theme;
use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Entity\EntityManagerInterface;
use Drupal\Core\Routing\AdminContext;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\Core\Theme\ThemeNegotiatorInterface;
/**
* Sets the active theme on admin pages.
*/
class AdminNegotiator implements ThemeNegotiatorInterface {
/**
* The current user.
*
* @var \Drupal\Core\Session\AccountInterface
*/
protected $user;
/**
* The config factory.
*
* @var \Drupal\Core\Config\ConfigFactoryInterface
*/
protected $configFactory;
/**
* The entity manager.
*
* @var \Drupal\Core\Entity\EntityManagerInterface
*/
protected $entityManager;
/**
* The route admin context to determine whether a route is an admin one.
*
* @var \Drupal\Core\Routing\AdminContext
*/
protected $adminContext;
/**
* Creates a new AdminNegotiator instance.
*
* @param \Drupal\Core\Session\AccountInterface $user
* The current user.
* @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
* The config factory.
* @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
* The entity manager.
* @param \Drupal\Core\Routing\AdminContext $admin_context
* The route admin context to determine whether the route is an admin one.
*/
public function __construct(AccountInterface $user, ConfigFactoryInterface $config_factory, EntityManagerInterface $entity_manager, AdminContext $admin_context) {
$this->user = $user;
$this->configFactory = $config_factory;
$this->entityManager = $entity_manager;
$this->adminContext = $admin_context;
}
/**
* {@inheritdoc}
*/
public function applies(RouteMatchInterface $route_match) {
return ($this->entityManager->hasHandler('user_role', 'storage') && $this->user->hasPermission('view the administration theme') && $this->adminContext->isAdminRoute($route_match->getRouteObject()));
}
/**
* {@inheritdoc}
*/
public function determineActiveTheme(RouteMatchInterface $route_match) {
return $this->configFactory->get('system.theme')->get('admin');
}
}