Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\system\Theme;
Chris@0: 
Chris@0: use Drupal\Core\Config\ConfigFactoryInterface;
Chris@0: use Drupal\Core\Routing\RouteMatchInterface;
Chris@0: use Drupal\Core\Site\Settings;
Chris@0: use Drupal\Core\Theme\ThemeNegotiatorInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Sets the active theme for the database update pages.
Chris@0:  */
Chris@0: class DbUpdateNegotiator implements ThemeNegotiatorInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The config factory.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Config\ConfigFactoryInterface
Chris@0:    */
Chris@0:   protected $configFactory;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a DbUpdateNegotiator.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
Chris@0:    *   The config factory.
Chris@0:    */
Chris@0:   public function __construct(ConfigFactoryInterface $config_factory) {
Chris@0:     $this->configFactory = $config_factory;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function applies(RouteMatchInterface $route_match) {
Chris@0:     return $route_match->getRouteName() == 'system.db_update';
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function determineActiveTheme(RouteMatchInterface $route_match) {
Chris@0:     $custom_theme = Settings::get('maintenance_theme', 'seven');
Chris@0:     if (!$custom_theme) {
Chris@0:       $config = $this->configFactory->get('system.theme');
Chris@0:       $custom_theme = $config->get('default');
Chris@0:     }
Chris@0: 
Chris@0:     return $custom_theme;
Chris@0:   }
Chris@0: 
Chris@0: }