layoutcomponents-8.x-1.14-beta2/modules/lc_simple_accordion/lc_simple_accordion.module

<?php

/**
 * @file
 * LC Simple accordion module file.
 */

use Drupal\Core\Template\Attribute;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_theme().
 */
function lc_simple_accordion_theme($existing, $type, $theme, $path) {
  return [
    'layoutcomponents_block_content__simple_accordion' => [
      'base hook' => 'block',
      'variables' => ['countdown_attributes' => NULL],
    ],
  ];
}

/**
 * Implements hook_help().
 */
function lc_simple_accordion_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Create help page.
    case 'help.page.lc_simple_accordion':
      $module_handler = \Drupal::service('module_handler');
      $module_path = $module_handler->getModule('lc_simple_accordion')->getPath();
      $file = $module_path . '/README.md';
      if (!file_exists($file)) {
        return '';
      }

      // Get content from file.
      $reader = file_get_contents($file);

      // Return "clean" content.
      return preg_replace("/\r\n|\n|\r/", "<br>", $reader);
  }
}

/**
 * Implements hook_page_attachments().
 */
function lc_simple_accordion_page_attachments(&$page) {
  $page['#attached']['library'][] = 'lc_simple_accordion/lc_simple_accordion';
}

/**
 * Implements hook_preprocess_page().
 */
function lc_simple_accordion_preprocess_block(&$variables) {
  $variables['unique_id'] = uniqid();

  if ($variables['base_plugin_id'] != 'inline_block') {
    return;
  }

  if ($variables['derivative_plugin_id'] != 'simple_accordion') {
    return;
  }

  if (!array_key_exists('#block_content', $variables['content'])) {
    return;
  }

  /** @var \Drupal\block_content\Entity\BlockContent $block */
  $block = $variables['content']['#block_content'];

  $block_id = str_replace(' ', '_', $block->uuid());

  $extra_class = $block->get('field_sa_extra_class')->getString();

  $classes = ['lc-inline_block_' . $block_id . '-accordion-container-edit'];

  // Set classes.
  if (!empty($extra_class)) {
    $extra_class = explode(" ", $extra_class);
    $classes = array_merge($classes, $extra_class);
  }

  $container_attr = new Attribute();
  $container_attr->addClass($classes);

  $items['field_sa_accordion_item'] = $variables['content']['field_sa_accordion_item'];
  unset($variables['content']['field_sa_accordion_item']);

  /** @var \Drupal\entity_reference_revisions\EntityReferenceRevisionsFieldItemList $cards */
  $cards = $items['field_sa_accordion_item']['#items'];

  if (!isset($cards)) {
    return;
  }

  for ($i = 0; $i < $cards->count(); $i++) {
    /** @var \Drupal\block_content\Entity\BlockContent $block_item */
    $block_item = $items['field_sa_accordion_item'][$i]['#block_content'];

    // Header attributes.
    $header = new Attribute();
    $header->addClass([
      'lc-inline_block_' . $block_item->uuid() . '-accordion-item-edit',
      'card-header',
    ]);
    $header->setAttribute('id', 'card-' . $block_id . '-' . $i);

    // Card attributes.
    $item = new Attribute();
    $item->addClass([
      'collapse',
    ]);
    $item->setAttribute('aria-labelledby', 'card-' . $block_id . '-' . $i);

    // Store.
    $items['field_sa_accordion_item'][$i]['header_attributes'] = $header;
    $items['field_sa_accordion_item'][$i]['card_attributes'] = $item;
    $items['field_sa_accordion_item'][$i]['uuid'] = $block_id;
  }

  // Store container.
  $variables['content']['container'] = [
    '#type' => 'container',
    'attributes' => $container_attr,
    'id' => $block_id,
    'content' => $items,
  ];
}

/**
 * Implements hook_inline_entity_form_entity_form_alter().
 */
function lc_simple_accordion_inline_entity_form_entity_form_alter(&$entity_form, &$form_state) {
  if ($entity_form['#bundle'] == 'simple_accordion') {
    if (!array_key_exists('#default_value', $entity_form) || !isset($entity_form['#default_value'])) {
      return;
    }
    /** @var \Drupal\block_content\Entity\BlockContent $block */
    $block = $entity_form['#default_value'];
    $block_id = str_replace(" ", "_", $block->uuid());
    _lc_simple_accordion_form_alter($entity_form, $block_id);
  }
}

/**
 * Implements hook_block_type_form_alter().
 */
function lc_simple_accordion_block_type_form_alter(array &$form, FormStateInterface &$form_state, $block_type) {
  if ($block_type == "simple_accordion") {
    if (!array_key_exists('#block', $form)) {
      return;
    }
    /** @var \Drupal\block_content\Entity\BlockContent $block */
    $block = $form['#block'];
    $block_id = str_replace(" ", "_", $block->uuid());
    _lc_simple_accordion_form_alter($form, $block_id);
  }
}

/**
 * Change the elements with LayoutComponents Api.
 *
 * @param array $form
 *   The array with the form.
 * @param string $block_id
 *   The id of the block.
 */
function _lc_simple_accordion_form_alter(array &$form, $block_id) {
  /** @var \Drupal\layoutcomponents\Api\Component $lcApi */
  $lcApi = Drupal::service('layoutcomponents.apiComponent');

  // LC inline video extra class.
  $extra_class = $form['field_sa_extra_class']['widget'][0]['value'];
  $form['field_sa_extra_class']['widget'][0]['value'] = $lcApi->getComponentElement(
    [
      'id' => 'block_' . $block_id . '-accordion-container',
      'input' => 'text',
      'type' => 'class',
      'style' => 'extra_class',
      'element' => 'text',
    ],
    $extra_class
  );
}