www.aleph1.co.uk Git - yaffs-website/blob - web/modules/contrib/paragraphs/src/Plugin/EntityReferenceSelection/ParagraphSelection.php

   1 <?php
   2
   3 namespace Drupal\paragraphs\Plugin\EntityReferenceSelection;
   4
   5 use Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection;
   6 use Drupal\Core\Url;
   7 use Drupal\Core\Form\FormStateInterface;
   8 use Drupal\Component\Utility\NestedArray;
   9
  10 /**
  11  * Default plugin implementation of the Entity Reference Selection plugin.
  12  *
  13  * @EntityReferenceSelection(
  14  *   id = "default:paragraph",
  15  *   label = @Translation("Paragraphs"),
  16  *   group = "default",
  17  *   entity_types = {"paragraph"},
  18  *   weight = 0
  19  * )
  20  */
  21 class ParagraphSelection extends DefaultSelection {
  22
  23   /**
  24    * {@inheritdoc}
  25    */
  26   public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
  27     $entity_type_id = $this->configuration['target_type'];
  28     $selection_handler_settings = $this->configuration['handler_settings'] ?: array();
  29     $bundles = \Drupal::service('entity_type.bundle.info')->getBundleInfo($entity_type_id);
  30
  31     // Merge-in default values.
  32     $selection_handler_settings += array(
  33       'target_bundles' => array(),
  34       'target_bundles_drag_drop' => array(),
  35     );
  36
  37     $bundle_options = array();
  38     $bundle_options_simple = array();
  39
  40     // Default weight for new items.
  41     $weight = count($bundles) + 1;
  42
  43     foreach ($bundles as $bundle_name => $bundle_info) {
  44       $bundle_options_simple[$bundle_name] = $bundle_info['label'];
  45       $bundle_options[$bundle_name] = array(
  46         'label' => $bundle_info['label'],
  47         'enabled' => isset($selection_handler_settings['target_bundles_drag_drop'][$bundle_name]['enabled']) ? $selection_handler_settings['target_bundles_drag_drop'][$bundle_name]['enabled'] : FALSE,
  48         'weight' => isset($selection_handler_settings['target_bundles_drag_drop'][$bundle_name]['weight']) ? $selection_handler_settings['target_bundles_drag_drop'][$bundle_name]['weight'] : $weight,
  49       );
  50       $weight++;
  51     }
  52
  53     // Kept for compatibility with other entity reference widgets.
  54     $form['target_bundles'] = array(
  55       '#type' => 'checkboxes',
  56       '#options' => $bundle_options_simple,
  57       '#default_value' => isset($selection_handler_settings['target_bundles']) ? $selection_handler_settings['target_bundles'] : array(),
  58       '#access' => FALSE,
  59     );
  60
  61     if ($bundle_options) {
  62       $form['target_bundles_drag_drop'] = [
  63         '#element_validate' => [[__CLASS__, 'targetTypeValidate']],
  64         '#type' => 'table',
  65         '#header' => [
  66           $this->t('Type'),
  67           $this->t('Weight'),
  68         ],
  69         '#attributes' => [
  70           'id' => 'bundles',
  71         ],
  72         '#prefix' => '<h5>' . $this->t('Paragraph types') . '</h5>',
  73         '#suffix' => '<div class="description">' . $this->t('The paragraph types that are allowed to be created in this field. Select none to allow all paragraph types.') .'</div>',
  74       ];
  75
  76       $form['target_bundles_drag_drop']['#tabledrag'][] = [
  77         'action' => 'order',
  78         'relationship' => 'sibling',
  79         'group' => 'bundle-weight',
  80       ];
  81     }
  82
  83     uasort($bundle_options, 'Drupal\Component\Utility\SortArray::sortByWeightElement');
  84
  85     $weight_delta = $weight;
  86
  87     // Default weight for new items.
  88     $weight = count($bundles) + 1;
  89     foreach ($bundle_options as $bundle_name => $bundle_info) {
  90       $form['target_bundles_drag_drop'][$bundle_name] = array(
  91         '#attributes' => array(
  92           'class' => array('draggable'),
  93         ),
  94       );
  95
  96       $form['target_bundles_drag_drop'][$bundle_name]['enabled'] = array(
  97         '#type' => 'checkbox',
  98         '#title' => $bundle_info['label'],
  99         '#title_display' => 'after',
 100         '#default_value' => $bundle_info['enabled'],
 101       );
 102
 103       $form['target_bundles_drag_drop'][$bundle_name]['weight'] = array(
 104         '#type' => 'weight',
 105         '#default_value' => (int) $bundle_info['weight'],
 106         '#delta' => $weight_delta,
 107         '#title' => $this->t('Weight for type @type', array('@type' => $bundle_info['label'])),
 108         '#title_display' => 'invisible',
 109         '#attributes' => array(
 110           'class' => array('bundle-weight', 'bundle-weight-' . $bundle_name),
 111         ),
 112       );
 113       $weight++;
 114     }
 115
 116     if (!count($bundle_options)) {
 117       $form['allowed_bundles_explain'] = [
 118         '#type' => 'markup',
 119         '#markup' => $this->t('You did not add any paragraph types yet, click <a href=":here">here</a> to add one.', [':here' => Url::fromRoute('paragraphs.type_add')->toString()]),
 120       ];
 121     }
 122
 123     return $form;
 124   }
 125
 126   /**
 127    * Validate helper to have support for other entity reference widgets.
 128    *
 129    * @param $element
 130    * @param FormStateInterface $form_state
 131    * @param $form
 132    */
 133   public static function targetTypeValidate($element, FormStateInterface $form_state, $form) {
 134     $values = &$form_state->getValues();
 135     $element_values = NestedArray::getValue($values, $element['#parents']);
 136     $bundle_options = array();
 137
 138     if ($element_values) {
 139       $enabled = 0;
 140       foreach ($element_values as $machine_name => $bundle_info) {
 141         if (isset($bundle_info['enabled']) && $bundle_info['enabled']) {
 142           $bundle_options[$machine_name] = $machine_name;
 143           $enabled++;
 144         }
 145       }
 146
 147       // All disabled = all enabled.
 148       if ($enabled === 0) {
 149         $bundle_options = NULL;
 150       }
 151     }
 152
 153     // New value parents.
 154     $parents = array_merge(array_slice($element['#parents'], 0, -1), array('target_bundles'));
 155     NestedArray::setValue($values, $parents, $bundle_options);
 156   }
 157 }