ThemeNegotiator.php in Gin Login 8

Namespace

Drupal\gin_login\Theme

File

src/Theme/ThemeNegotiator.php

<?php

namespace Drupal\gin_login\Theme;

use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Theme\ThemeNegotiatorInterface;

/**
 * Contains \Drupal\gin_login\Theme\ThemeNegotiator
 * Credit to jimconte https://jimconte.com/blog/web/dynamic-theme-switching-in-drupal-8.
 */
class ThemeNegotiator implements ThemeNegotiatorInterface {

  /** @var ConfigFactoryInterface */
  protected $configFactory;
  public function __construct(ConfigFactoryInterface $configFactory) {
    $this->configFactory = $configFactory;
  }

  /**
   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
   * @return bool
   */
  public function applies(RouteMatchInterface $route_match) {
    return $this
      ->negotiateRoute($route_match) ? TRUE : FALSE;
  }

  /**
   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
   * @return null|string
   */
  public function determineActiveTheme(RouteMatchInterface $route_match) {
    return $this
      ->negotiateRoute($route_match) ?: NULL;
  }

  /**
   * Function that does all of the work in selecting a theme.
   *
   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
   *
   * @return bool|string
   */
  private function negotiateRoute(RouteMatchInterface $route_match) {
    if ($route_match
      ->getRouteName() == 'user.login' || $route_match
      ->getRouteName() == 'user.pass' || $route_match
      ->getRouteName() == 'user.register') {
      return $this->configFactory
        ->get('system.theme')
        ->get('admin');
    }
    return FALSE;
  }

}

Classes

Name	Description
ThemeNegotiator	Contains \Drupal\gin_login\Theme\ThemeNegotiator Credit to jimconte https://jimconte.com/blog/web/dynamic-theme-switching-in-drupal-8.