views_nested_details.module

<?php

/**
 * @file
 * Contains views_nested_details.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Template\Attribute;
use Drupal\islandora\IslandoraUtils;

/**
 * Implements hook_help().
 */
function views_nested_details_help($route_name, RouteMatchInterface $route_match) {
    switch ($route_name) {
        // Main module help for the views_nested_details module.
        case 'help.page.views_nested_details':
            $output = '';
            $output .= '<h3>' . t('About') . '</h3>';
            $output .= '<p>' . t('views_nested_details View') . '</p>';
            return $output;

        default:
    }
}

/**
 * Implements hook_theme().
 */
function views_nested_details_theme() {
  return [
    'views_nested_details' => [
      'render element' => 'children',
    ],
    // Views GROUP templates.
    'views_view_nested_details_section_grouping' => [
      'variables' => ['view' => NULL, 'grouping' => NULL, 'grouping_level' => NULL, 'rows' => NULL, 'title' => NULL],
    ],
    'views_view_nested_details' => array(
      'variables' => array('view' => NULL, 'rows' => NULL),
    ),
  ];
}


/**
 * Prepares variables for views single grouping templates.
 *
 * Default template: views-view-grouping.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - view: The view object.
 *   - rows: The rows returned from the view.
 *   - grouping_level: Integer indicating the hierarchical level of the
 *     grouping.
 *   - content: The content to be grouped.
 *   - title: The group heading.
 */
function template_preprocess_views_view_nested_details_section_grouping(&$variables) {
  $variables['content'] = $variables['view']->style_plugin->renderGroupingSets($variables['rows'], $variables['grouping_level']);
  $variables['#attached'] = [
    'library' => [
      'views_nested_details/mystic_behaviors'
    ],
  ];
}

/**
 * Implements hook_preprocess_HOOK() for theme_views_view_details().
 */
function template_preprocess_views_view_nested_details(&$variables) {
  $view = $variables['view'];
  $rows = $variables['rows'];
  $style = $view->style_plugin;
  $options = $style->options;

  $variables['default_row_class'] = !empty($options['default_row_class']);
  foreach ($rows as $id => $row) {
    $variables['rows'][$id] = [];
    $variables['rows'][$id]['content'] = $row;
    $variables['rows'][$id]['attributes'] = new Attribute();
    if ($row_class = $view->style_plugin->getRowClass($id)) {
      $variables['rows'][$id]['attributes']->addClass($row_class);
    }
  }
  $variables['row_content']  = [
    '#theme' => 'item_list',
    '#list_type' => 'ul',
    '#title' => 'My List',
    '#items' => $rows,
    '#attributes' => ['class' => 'myclass'],
    '#wrapper_attributes' => ['class' => 'my_list_container'],
  ];
}