Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\taxonomy\Plugin\EntityReferenceSelection;
Chris@0: 
Chris@0: use Drupal\Component\Utility\Html;
Chris@0: use Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection;
Chris@0: use Drupal\Core\Form\FormStateInterface;
Chris@0: use Drupal\taxonomy\Entity\Vocabulary;
Chris@0: 
Chris@0: /**
Chris@0:  * Provides specific access control for the taxonomy_term entity type.
Chris@0:  *
Chris@0:  * @EntityReferenceSelection(
Chris@0:  *   id = "default:taxonomy_term",
Chris@0:  *   label = @Translation("Taxonomy Term selection"),
Chris@0:  *   entity_types = {"taxonomy_term"},
Chris@0:  *   group = "default",
Chris@0:  *   weight = 1
Chris@0:  * )
Chris@0:  */
Chris@0: class TermSelection extends DefaultSelection {
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function defaultConfiguration() {
Chris@0:     return [
Chris@0:       'sort' => [
Chris@0:         'field' => 'name',
Chris@0:         'direction' => 'asc',
Chris@0:       ]
Chris@0:     ] + parent::defaultConfiguration();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
Chris@0:     $form = parent::buildConfigurationForm($form, $form_state);
Chris@0: 
Chris@0:     $form['target_bundles']['#title'] = $this->t('Available Vocabularies');
Chris@0: 
Chris@0:     // Sorting is not possible for taxonomy terms because we use
Chris@0:     // \Drupal\taxonomy\TermStorageInterface::loadTree() to retrieve matches.
Chris@0:     $form['sort']['#access'] = FALSE;
Chris@0: 
Chris@0:     return $form;
Chris@0: 
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getReferenceableEntities($match = NULL, $match_operator = 'CONTAINS', $limit = 0) {
Chris@0:     if ($match || $limit) {
Chris@0:       return parent::getReferenceableEntities($match, $match_operator, $limit);
Chris@0:     }
Chris@0: 
Chris@0:     $options = [];
Chris@0: 
Chris@0:     $bundles = $this->entityManager->getBundleInfo('taxonomy_term');
Chris@0:     $bundle_names = $this->getConfiguration()['target_bundles'] ?: array_keys($bundles);
Chris@0: 
Chris@0:     foreach ($bundle_names as $bundle) {
Chris@0:       if ($vocabulary = Vocabulary::load($bundle)) {
Chris@0:         if ($terms = $this->entityManager->getStorage('taxonomy_term')->loadTree($vocabulary->id(), 0, NULL, TRUE)) {
Chris@0:           foreach ($terms as $term) {
Chris@0:             $options[$vocabulary->id()][$term->id()] = str_repeat('-', $term->depth) . Html::escape($this->entityManager->getTranslationFromContext($term)->label());
Chris@0:           }
Chris@0:         }
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     return $options;
Chris@0:   }
Chris@0: 
Chris@0: }