views_collapsible_list-8.x-1.x-dev/views_collapsible_list.module

<?php

/**
 * @file
 * Hook implementations for the Views Collapsible List module.
 */

use Drupal\Component\Utility\Html;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function views_collapsible_list_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.views_collapsible_list':
      $text = file_get_contents(dirname(__FILE__) . "/README.md");
      if (!\Drupal::moduleHandler()->moduleExists('markdown')) {
        return '<pre>' . $text . '</pre>';
      }
      else {
        // Use the Markdown filter to render the README.
        $filter_manager = \Drupal::service('plugin.manager.filter');
        $settings = \Drupal::configFactory()->get('markdown.settings')->getRawData();
        $config = ['settings' => $settings];
        $filter = $filter_manager->createInstance('markdown', $config);
        return $filter->process($text, 'en');
      }
  }
  return NULL;
}

/**
 * Prepares variables for Views collapsible list templates.
 *
 * Default template: views-view-collapsible-list.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - view: A View object.
 */
function template_preprocess_views_view_collapsible_list(array &$variables) {
  // We inherit from the normal list style, so we also need all those variables
  // populated.
  template_preprocess_views_view_list($variables);

  // Add the client side portion that makes it work.
  $variables['view']->element['#attached']['library'][] = 'views_collapsible_list/collapse';
  $style_options = $variables['view']->style_plugin->options;
  $fields = isset($style_options['collapsible_fields']) ? array_values(array_filter($style_options['collapsible_fields'])) : [];
  $fields = array_map(function ($a) {
    return '.views-field-' . Html::cleanCssIdentifier($a);
  }, $fields);
  $variables['view']->element['#attached']['drupalSettings']['viewsCollapsibleList']['fields'] = $fields;

  // Create a unique class name for each SUN section on the list to
  // collapse/expand each section individually.
  $time = new DateTime();
  $variables['section_class'] = 'btn--' . ($time->getTimestamp() + (rand(1, 9999)));
}