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

   1 <?php
   2 /**
   3  * @file
   4  * Contains \Drupal\bootstrap\Plugin\Preprocess\Breadcrumb.
   5  */
   6
   7 namespace Drupal\bootstrap\Plugin\Preprocess;
   8
   9 use Drupal\bootstrap\Annotation\BootstrapPreprocess;
  10 use Drupal\bootstrap\Utility\Variables;
  11 use Drupal\Core\Template\Attribute;
  12 use Drupal\Core\Url;
  13
  14 /**
  15  * Pre-processes variables for the "breadcrumb" theme hook.
  16  *
  17  * @ingroup plugins_preprocess
  18  *
  19  * @BootstrapPreprocess("breadcrumb")
  20  */
  21 class Breadcrumb extends PreprocessBase implements PreprocessInterface {
  22
  23   /**
  24    * {@inheritdoc}
  25    */
  26   public function preprocessVariables(Variables $variables) {
  27     $breadcrumb = &$variables['breadcrumb'];
  28
  29     // Determine if breadcrumbs should be displayed.
  30     $breadcrumb_visibility = $this->theme->getSetting('breadcrumb');
  31     if (($breadcrumb_visibility == 0 || ($breadcrumb_visibility == 2 && \Drupal::service('router.admin_context')->isAdminRoute())) || empty($breadcrumb)) {
  32       $breadcrumb = [];
  33       return;
  34     }
  35
  36     // Remove first occurrence of the "Home" <front> link, provided by core.
  37     if (!$this->theme->getSetting('breadcrumb_home')) {
  38       $front = Url::fromRoute('<front>')->toString();
  39       foreach ($breadcrumb as $key => $link) {
  40         if (isset($link['url']) && $link['url'] === $front) {
  41           unset($breadcrumb[$key]);
  42           break;
  43         }
  44       }
  45     }
  46
  47     if ($this->theme->getSetting('breadcrumb_title') && !empty($breadcrumb)) {
  48       $request = \Drupal::request();
  49       $route_match = \Drupal::routeMatch();
  50       $page_title = \Drupal::service('title_resolver')->getTitle($request, $route_match->getRouteObject());
  51       if (!empty($page_title)) {
  52         $breadcrumb[] = [
  53           'text' => $page_title,
  54           'attributes' => new Attribute(['class' => ['active']]),
  55         ];
  56       }
  57     }
  58
  59     // Add cache context based on url.
  60     $variables->addCacheContexts(['url']);
  61   }
  62
  63 }