sitestudio_default_helper.module

<?php

/**
 * @file
 * Site Studio default helper module.
 */

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\WidgetInterface;

/**
 * Implements hook_field_widget_third_party_settings_form().
 */
function sitestudio_default_helper_field_widget_third_party_settings_form(
  WidgetInterface $plugin,
  FieldDefinitionInterface $field_definition,
  $form_mode,
  $form,
  FormStateInterface $form_state
) {
  if ($plugin->getPluginId() == 'cohesion_layout_builder_widget') {
    $helpers = \Drupal::entityTypeManager()->getStorage('cohesion_helper')->loadMultiple();
    $options = [];
    foreach ($helpers as $helper) {
      $options[$helper->id()] = $helper->label();
    }

    $element['default_helper'] = [
      '#type' => 'select',
      '#title' => t('Default Helper'),
      '#default_value' => $plugin->getThirdPartySetting('sitestudio_default_helper', 'default_helper'),
      '#options' => $options,
    ];
    return $element;
  }
}

/**
 * Implements hook_field_widget_settings_summary_alter().
 */
function sitestudio_default_helper_field_widget_settings_summary_alter(&$summary, $context) {
  if ($context['widget']->getPluginId() == 'cohesion_layout_builder_widget') {
    if ($default_helper = $context['widget']->getThirdPartySetting('sitestudio_default_helper', 'default_helper')) {
      $helper = \Drupal::entityTypeManager()->getStorage('cohesion_helper')->load($default_helper);
      $summary[] = t('Default helper: %helper.', ['%helper' => $helper->label()]);
    }
  }
}

/**
 * Implements hook_field_widget_form_alter().
 */
function sitestudio_default_helper_field_widget_form_alter(&$element, FormStateInterface $form_state, $context) {
  if ($context['widget']->getPluginId() == 'cohesion_layout_builder_widget'
    && $helper_id = $context['widget']->getThirdPartySetting('sitestudio_default_helper', 'default_helper')
  ) {
    $helper = \Drupal::entityTypeManager()->getStorage('cohesion_helper')->load($helper_id);
    $helper_json_values = $helper->get("json_values");
    $element['target_id']['#json_values'] = $helper_json_values;
  }
}