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

<?php

/**
 * @file
 * LC Simple View Carrousel module file.
 */

use Drupal\Core\Form\FormStateInterface;
use Drupal\views\Views;
use Drupal\Core\Routing\RouteMatchInterface;

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

/**
 * Implements hook_block_type_form_alter().
 */
function lc_simple_view_carousel_block_type_form_alter(array &$form, FormStateInterface &$form_state, $block_type) {
  if ($block_type == "simple_view_carousel") {
    if (!array_key_exists('#block', $form)) {
      return;
    }
    // Include the warning.
    $form['warning'] = [
      '#type' => 'markup',
      '#markup' => '<span class="warning"><div class="js-form-item form-item js-form-type-select form-type-select text-danger">' . t('The text of each tab will be collected from the "field_tab_pagination_text" field of each type of content') . '</div></span>',
      '#weight' => '999',
    ];
  }
}

/**
 * Implements hook_preprocess_page().
 */
function lc_simple_view_carousel_preprocess_block(&$variables) {
  if ($variables['base_plugin_id'] != 'inline_block') {
    return;
  }

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

  /** @var \Drupal\block_content\Entity\BlockContent $block */
  $block = $variables['content']['#block_content'];
  $block_slick = $variables['content']['#attributes']['class'][] = 'block-inline-blocksimple-view-carousel-' . $block->id();

  // The view id home_carousel-slider.
  $id = $block->get('field_vc')->getString();
  $preprocess_tabs = $block->get('field_vc_preprocess_tabs')->getString();

  if (!empty($id)) {
    /** @var \Drupal\views\ViewExecutable $view */
    $view = Views::getView($id);

    // Render the view.
    $variables['content']['field_vc'][0] = $view->render('default');

    // The items of the carousel.
    if (!array_key_exists('#build', $variables['content']['field_vc'][0]['#rows'])) {
      return;
    }

    $items = $variables['content']['field_vc'][0]['#rows']['#build']['items'];
    $js_settings = [
      'id' => $block_slick,
    ];

    // Find the values for the dots.
    if (boolval($preprocess_tabs)) {
      foreach ($items as $i => $item) {
        /** @var \Drupal\node\Entity\Node $node */
        $node = $item['slide']['#node'];
        if ($node->hasField('field_tab_pagination_text')) {
          $js_settings['items'][] = [
            'title' => $node->get('field_tab_pagination_text')->getString(),
          ];
        }
      }
    }

    // Add custom libraries.
    $variables['#attached']['library'][] = 'lc_simple_view_carousel/lc_simple_view_carousel';
    $variables['#attached']['drupalSettings']['homeCarousel']['items'][$block_slick] = $js_settings;
  }
}

/**
 * Implements hook_help().
 */
function lc_simple_view_carousel_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Create help page.
    case 'help.page.lc_simple_view_carousel':
      $module_handler = \Drupal::service('module_handler');
      $module_path = $module_handler->getModule('lc_simple_view_carousel')->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);
  }
}