legacy_me_style_options.module

<?php

use Drupal\Core\Entity\EntityInterface;
use Drupal\paragraphs\ParagraphInterface;

/**
 * @file
 * Legacy ME Style Options module.
 */

/**
 * Implements hook_preprocess_layout_paragraphs_component_menu().
 */
function legacy_me_style_options_preprocess_layout_paragraphs_builder_component_menu(&$variables) {
  foreach (['layout', 'content'] as $category) {
    if (isset($variables['types'][$category])) {
      $new_types = [];
      foreach ($variables['types'][$category] as $bundle => $info) {
        $new_types[$bundle] = $info;
        $options = \Drupal::service('style_options.discovery')->getContextOptions('paragraphs', $bundle);
        foreach (array_keys($options) as $option_id) {
          $definition =  \Drupal::service('style_options.discovery')->getOptionDefinition($option_id);
          if ($definition['plugin'] == 'template_suggestion') {
            foreach ($definition['options'] as $key => $option) {
              if ($key !== $definition['default']) {
                $new_types[$bundle . '__' . $key] = $info;
                $new_types[$bundle . '__' . $key]['id'] = $bundle . '__' . $key;
                $new_types[$bundle . '__' . $key]['label'] = $option['label'];
                $new_types[$bundle . '__' . $key]['url'] .= (strpos($info['url'], '?') !== FALSE ? '&' : '?') . $option_id . '=' . $key;
                $new_types[$bundle . '__' . $key]['link_attributes'] = clone($info['link_attributes']);
                $new_types[$bundle . '__' . $key]['link_attributes']->setAttribute('title', t('Create new :type', [':type' => $option['label']]));
              }
            }
          }
        }
      }
      $variables['types'][$category] = $new_types;
    }
  }
}

/**
 * Implements hook_preprocess_layout_paragraphs_builder_controls().
 *
 * Change the component name in the controls widget to the template suggestion.
 */
function legacy_me_style_options_preprocess_layout_paragraphs_builder_controls(&$variables) {

  /** @var \Drupal\layout_paragraphs\LayoutParagraphsLayout $layout */
  $layout = $variables['layout_paragraphs_layout'];
  $component = $layout->getComponentByUuid($variables['uuid']);
  $paragraph = $component->getEntity();
  $context_options = \Drupal::service('style_options.discovery')
    ->getContextOptions('paragraphs', $paragraph->bundle());
  foreach (array_keys($context_options) as $option) {
    $context_defition = \Drupal::service('style_options.discovery')
      ->getOptionDefinition($option);
    if ($context_defition['plugin'] == 'template_suggestion') {
      $behavior_settings = $paragraph->getAllBehaviorSettings();
      if (!isset($behavior_settings['style_options'])) {
        return;
      }
      $style_options = $behavior_settings['style_options'];
      if (isset($style_options[$option])) {
        $key = $style_options[$option]['template_suggestion'];
        $variables['controls']['label']['#value'] = $context_defition['options'][$key]['label'];
      }
    }
  }
}

/**
 * Implements hook_theme_suggestions_HOOK_alter
 */
function legacy_me_style_options_theme_suggestions_paragraph_alter(array &$suggestions, array $variables) {
  /** @var Drupal\paragraphs\Entity\Paragraph $paragraph */
  $paragraph = $variables['elements']['#paragraph'];
  if (empty($paragraph)) {
    return;
  }
  $behavior_settings = $paragraph->getAllBehaviorSettings();
  if (isset($behavior_settings['style_options'])) {
    $template_suggestions = array_filter($behavior_settings['style_options'], function ($option) {
      return isset($option['template_suggestion']);
    });
    $template_suggestions = array_map(function ($option) {
      return $option['template_suggestion'];
    }, $template_suggestions);
    foreach ($template_suggestions as $template_suggestion) {
      $suggestions[] = 'paragraph__' . $paragraph->bundle() . '__' . $template_suggestion;
    }
    return $suggestions;
  }
}

/**
 * Implements hook_entity_view_mode_alter().
 */
function legacy_me_style_options_entity_view_mode_alter(&$view_mode, EntityInterface $entity, $context) {
  if (!$entity instanceof ParagraphInterface) {
    return;
  }
  $behavior_settings = $entity->getAllBehaviorSettings();
  $style_options = $behavior_settings['style_options'] ?? [];
  foreach ($style_options as $option_id => $style_option) {
    if (isset($style_option['display_mode'])) {
      $definition =  \Drupal::service('style_options.discovery')->getOptionDefinition($option_id);
      $config = $definition['options'][$style_option['display_mode']];
      $view_mode = $config['view_mode'];
    }
  }
}

/**
 * Implements hook_preprocess_paragraph().
 */
function legacy_me_style_options_preprocess_paragraph(&$variables) {
  $variables['#attached']['library'][] = 'legacy_me_style_options/style_options';
}