www.aleph1.co.uk Git - yaffs-website/blob - web/themes/contrib/bootstrap/src/Plugin/Preprocess/Breadcrumb.php

   1 <?php
   2
   3 namespace Drupal\bootstrap\Plugin\Preprocess;
   4
   5 use Drupal\bootstrap\Utility\Variables;
   6 use Drupal\Core\Template\Attribute;
   7 use Drupal\Core\Url;
   8
   9 /**
  10  * Pre-processes variables for the "breadcrumb" theme hook.
  11  *
  12  * @ingroup plugins_preprocess
  13  *
  14  * @BootstrapPreprocess("breadcrumb")
  15  */
  16 class Breadcrumb extends PreprocessBase implements PreprocessInterface {
  17
  18   /**
  19    * {@inheritdoc}
  20    */
  21   public function preprocessVariables(Variables $variables) {
  22     $breadcrumb = &$variables['breadcrumb'];
  23
  24     // Determine if breadcrumbs should be displayed.
  25     $breadcrumb_visibility = $this->theme->getSetting('breadcrumb');
  26     if (($breadcrumb_visibility == 0 || ($breadcrumb_visibility == 2 && \Drupal::service('router.admin_context')->isAdminRoute())) || empty($breadcrumb)) {
  27       $breadcrumb = [];
  28       return;
  29     }
  30
  31     // Remove first occurrence of the "Home" <front> link, provided by core.
  32     if (!$this->theme->getSetting('breadcrumb_home')) {
  33       $front = Url::fromRoute('<front>')->toString();
  34       foreach ($breadcrumb as $key => $link) {
  35         if (isset($link['url']) && $link['url'] === $front) {
  36           unset($breadcrumb[$key]);
  37           break;
  38         }
  39       }
  40     }
  41
  42     if ($this->theme->getSetting('breadcrumb_title') && !empty($breadcrumb)) {
  43       $request = \Drupal::request();
  44       $route_match = \Drupal::routeMatch();
  45       $page_title = \Drupal::service('title_resolver')->getTitle($request, $route_match->getRouteObject());
  46       if (!empty($page_title)) {
  47         $breadcrumb[] = [
  48           'text' => $page_title,
  49           'attributes' => new Attribute(['class' => ['active']]),
  50         ];
  51       }
  52     }
  53
  54     // Add cache context based on url.
  55     $variables->addCacheContexts(['url']);
  56   }
  57
  58 }