flexslider_views.module

<?php

/**
 * @file
 * A light-weight, customizable lightbox plugin for jQuery 1.3
 */

use Drupal\Core\Template\Attribute;
use Drupal\Component\Serialization\Json;
use Drupal\file\Entity\File;
use Drupal\image\Entity\ImageStyle;


/**
 * Prepares variables for Views Flexslider templates.
 *
 * Default template: views-view-flexslider.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - view: A View object.
 */
function template_preprocess_views_view_flexslider(&$variables) {
  /** @var \Drupal\flexslider_views\Plugin\views\style\FlexSlider $handler */
  $handler = $variables['view']->style_plugin;

  // Fetch classes from handler options.
  $list_classes = [];
  if ($handler->options['class']) {
    $list_classes = explode(' ', $handler->options['class']);
    $list_classes = array_map('\Drupal\Component\Utility\Html::cleanCssIdentifier', $list_classes);
  }
  $variables['list']['attributes'] = new Attribute(array('class' => $list_classes));

  // Fetch wrapper classes from handler options.
  $wrapper_classes = ['flexslider'];
  if (!empty($handler->options['wrapper_class'])) {
    $wrapper_classes = array_merge($wrapper_classes, explode(' ', $handler->options['wrapper_class']));
    $wrapper_classes = array_map('\Drupal\Component\Utility\Html::cleanCssIdentifier', $wrapper_classes);
  }
  $variables['attributes'] = new Attribute(array('class' => $wrapper_classes));

  $variables['list']['type'] = $handler->options['type'];

  if ($handler->options['flexslide_controlNav'] == 'thumbnails' && !empty($handler->options['flexslide_thumbField'])) {
    $thumbField = $variables['view']->field[$handler->options['flexslide_thumbField']];
    $thumbImageStyle = $handler->options['flexslide_thumbImageStyle'];
  }

  // Flexslider configuration.
  $variables['settings'] = $handler->filterOptions();
  $variables['attributes']['data-flexsliderconfig'] = Json::encode($variables['settings']);

  $variables['#attached']['library'][] = 'flexslider_views/flexslider_views';

  template_preprocess_views_view_unformatted($variables);

  // Attributes are created in template_preprocess_views_view_unformatted().
  // Add data-thumb attribute for thumbnail ControlNav.
  if (isset($thumbField)) {
    foreach ($variables['rows'] as $id => $row) {
      $fid = $row['content']['#row']->{$thumbField->aliases[$thumbField->realField]};
      if (is_numeric($fid) && $file = File::load($fid)) {
      $image_uri = $file->getFileUri();
        // Get image style URL
        if ($thumbImageStyle) {
          $image_uri = ImageStyle::load($thumbImageStyle)->buildUrl($image_uri);
        }
        else {
          // Get absolute path for original image
          $image_uri = $file->url();
        }
        $variables['rows'][$id]['attributes']->setAttribute('data-thumb', $image_uri);
      }
    }
  }
}