layout_paragraphs.module in Layout Paragraphs 1.0.x

Contains layout_paragraphs.module.

File

layout_paragraphs.module

<?php

/**
 * @file
 * Contains layout_paragraphs.module.
 */
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\paragraphs\Entity\Paragraph;

/**
 * Implements hook_help().
 */
function layout_paragraphs_help($route_name, RouteMatchInterface $route_match) {
  $output = '';
  switch ($route_name) {

    // Main module help for the layout_paragraphs module.
    case 'help.page.layout_paragraphs':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Provide layout integration for paragraph fields.') . '</p>';
      break;
  }
  return $output;
}

/**
 * Implements hook_theme().
 */
function layout_paragraphs_theme() {
  return [
    'layout_paragraphs' => [
      'variables' => [
        'elements' => '',
        'content' => '',
      ],
    ],
  ];
}

/**
 * Implements hook_theme_suggestions().
 */
function layout_paragraphs_theme_suggestions_layout_paragraphs(array $variables) {
  $suggestions = [];
  $sanitized_view_mode = strtr($variables['elements']['#view_mode'], '.', '_');
  $suggestions[] = 'layout_paragraphs__' . $sanitized_view_mode;
  $suggestions[] = 'layout_paragraphs__' . $variables['elements']['field_name'];
  $suggestions[] = 'layout_paragraphs__' . $variables['elements']['field_name'] . '__' . $sanitized_view_mode;
  return $suggestions;
}

/**
 * Implements hook_prepreprocess_radios().
 *
 * Add wrapper class for layout selection.
 */
function layout_paragraphs_preprocess_radios(&$variables) {
  if (isset($variables['element']['#wrapper_attributes'])) {
    $variables['attributes'] += $variables['element']['#wrapper_attributes'];
  }
}

/**
 * Implements hook_module_implements_alter().
 *
 * If "content_translation", move the form_alter implementation by the
 * layout_paragraphs at the end of the list, so that it might be
 * called after the content_translation one.
 * Otherwise the $form['translatable'] won't be defined in
 * layout_paragraphs_form_field_config_edit_form_alter.
 *
 * @see: https://www.hashbangcode.com/article/drupal-8-altering-hook-weights.
 */
function layout_paragraphs_module_implements_alter(&$implementations, $hook) {

  // Move our hook_entity_type_alter() implementation to the end of the list.
  if ($hook == 'form_alter' && isset($implementations['layout_paragraphs']) && isset($implementations['content_translation'])) {
    $hook_init = $implementations['layout_paragraphs'];
    unset($implementations['layout_paragraphs']);
    $implementations['layout_paragraphs'] = $hook_init;
  }
}

/**
 * Implements hook_ENTITY_presave().
 *
 * Updates references to parent layout section uuids in cases
 * where paragraphs are duplicated, for example when using the
 * Replicate module.
 *
 * @todo Consider changing approach if this issue is addressed in core:
 * https://www.drupal.org/project/drupal/issues/3040556
 * (It is not possible to react to an entity being duplicated)
 */
function layout_paragraphs_paragraph_presave(Paragraph $paragraph) {
  $behavior_settings = $paragraph
    ->getAllBehaviorSettings();
  $layout_paragraphs_settings = $behavior_settings['layout_paragraphs'] ?? [];
  if (!empty($layout_paragraphs_settings['parent_uuid']) && ($parent = $paragraph
    ->getParentEntity())) {
    $parent_field = $paragraph
      ->get('parent_field_name');
    $field_name = $parent_field
      ->first()
      ->getString();
    $item_list = $parent
      ->get($field_name);

    /** @var \Drupal\Core\Field\EntityReferenceFieldItemList $item_list */
    $sibling_paragraphs = $item_list
      ->referencedEntities();
    if (count($sibling_paragraphs)) {
      $uuid_map = [];
      foreach ($sibling_paragraphs as $delta => $item) {
        $uuid_map[$item
          ->uuid()] = $delta;
      }
      $parent_delta = $uuid_map[$layout_paragraphs_settings['parent_uuid']] ?? NULL;

      // If the parent layout section is correctly referenced via
      // parent_uuid, save the parent delta so we can correctly map
      // uuids using the delta if content is duplicated.
      if (isset($parent_delta)) {
        $layout_paragraphs_settings['parent_delta'] = $parent_delta;
      }
      elseif (isset($layout_paragraphs_settings['parent_delta'], $sibling_paragraphs[$layout_paragraphs_settings['parent_delta']])) {
        $updated_parent_uuid = $sibling_paragraphs[$layout_paragraphs_settings['parent_delta']]
          ->uuid();
        $layout_paragraphs_settings['parent_uuid'] = $updated_parent_uuid;
      }

      // Since paragraph::preSave() has already been called,
      // we have to set the serialized behavior settings directly
      // rather than using setBehaviorSettings().
      $behavior_settings['layout_paragraphs'] = $layout_paragraphs_settings;
      $paragraph
        ->set('behavior_settings', serialize($behavior_settings));
    }
  }
}

Functions

Name	Description
layout_paragraphs_help	Implements hook_help().
layout_paragraphs_module_implements_alter	Implements hook_module_implements_alter().
layout_paragraphs_paragraph_presave	Implements hook_ENTITY_presave().
layout_paragraphs_preprocess_radios	Implements hook_prepreprocess_radios().
layout_paragraphs_theme	Implements hook_theme().
layout_paragraphs_theme_suggestions_layout_paragraphs	Implements hook_theme_suggestions().