aleph1.co.uk Git - yaffs-website/blob - CategoryAutocompleteController.php

   1 <?php
   2
   3 namespace Drupal\block\Controller;
   4
   5 use Drupal\Component\Utility\Html;
   6 use Drupal\Core\Block\BlockManagerInterface;
   7 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
   8 use Symfony\Component\DependencyInjection\ContainerInterface;
   9 use Symfony\Component\HttpFoundation\JsonResponse;
  10 use Symfony\Component\HttpFoundation\Request;
  11
  12 /**
  13  * Returns autocomplete responses for block categories.
  14  */
  15 class CategoryAutocompleteController implements ContainerInjectionInterface {
  16
  17   /**
  18    * The block manager.
  19    *
  20    * @var \Drupal\Core\Block\BlockManagerInterface
  21    */
  22   protected $blockManager;
  23
  24   /**
  25    * Constructs a new CategoryAutocompleteController.
  26    *
  27    * @param \Drupal\Core\Block\BlockManagerInterface $block_manager
  28    *   The block manager.
  29    */
  30   public function __construct(BlockManagerInterface $block_manager) {
  31     $this->blockManager = $block_manager;
  32   }
  33
  34   /**
  35    * {@inheritdoc}
  36    */
  37   public static function create(ContainerInterface $container) {
  38     return new static(
  39       $container->get('plugin.manager.block')
  40     );
  41   }
  42
  43   /**
  44    * Retrieves suggestions for block category autocompletion.
  45    *
  46    * @param \Symfony\Component\HttpFoundation\Request $request
  47    *   The current request.
  48    *
  49    * @return \Symfony\Component\HttpFoundation\JsonResponse
  50    *   A JSON response containing autocomplete suggestions.
  51    */
  52   public function autocomplete(Request $request) {
  53     $typed_category = $request->query->get('q');
  54     $matches = [];
  55     foreach ($this->blockManager->getCategories() as $category) {
  56       if (stripos($category, $typed_category) === 0) {
  57         $matches[] = ['value' => $category, 'label' => Html::escape($category)];
  58       }
  59     }
  60     return new JsonResponse($matches);
  61   }
  62
  63 }