DbUpdateNegotiator.php in Drupal 10

Namespace

Drupal\system\Theme

File

core/modules/system/src/Theme/DbUpdateNegotiator.php

<?php

namespace Drupal\system\Theme;

use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Extension\ThemeHandlerInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Site\Settings;
use Drupal\Core\Theme\ThemeNegotiatorInterface;

/**
 * Sets the active theme for the database update pages.
 */
class DbUpdateNegotiator implements ThemeNegotiatorInterface {

  /**
   * The config factory.
   *
   * @var \Drupal\Core\Config\ConfigFactoryInterface
   */
  protected $configFactory;

  /**
   * The theme handler.
   *
   * @var \Drupal\Core\Extension\ThemeHandlerInterface
   */
  protected $themeHandler;

  /**
   * Constructs a DbUpdateNegotiator.
   *
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   The config factory.
   * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
   *   The theme handler.
   */
  public function __construct(ConfigFactoryInterface $config_factory, ThemeHandlerInterface $theme_handler) {
    $this->configFactory = $config_factory;
    $this->themeHandler = $theme_handler;
  }

  /**
   * {@inheritdoc}
   */
  public function applies(RouteMatchInterface $route_match) {
    return $route_match
      ->getRouteName() == 'system.db_update';
  }

  /**
   * {@inheritdoc}
   */
  public function determineActiveTheme(RouteMatchInterface $route_match) {
    $custom_theme = Settings::get('maintenance_theme');
    if (!$custom_theme) {
      $custom_theme = $this->themeHandler
        ->themeExists('claro') ? 'claro' : 'seven';
    }
    return $custom_theme;
  }

}

Classes

Name	Description
DbUpdateNegotiator	Sets the active theme for the database update pages.