galleryslider-8.x-3.1/galleryslider.module

<?php

/**
 * @file
 * Contains galleryslider.module..
 */

use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 *
 * @param $route_name
 * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
 *
 * @return string
 */
function galleryslider_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the simple module.
    case 'help.page.galleryslider':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('simple Carousel: Download code at drupal.org') . '</p>';
      $output .= '<p>' . t('Video tutorial will be uploaded soon') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_theme().
 */
function galleryslider_theme() {
  return [
    'galleryslider' => [
      'variables' => ['items' => NULL, 'settings' => NULL],
    ],
    'galleryslider_views' => [
      'variables' => [],
    ],
  ];
}

/**
 * Themeable for galleryslider.
 *
 * @param $variables
 */
function template_preprocess_galleryslider(&$variables) {
  $items = $variables['items'];
  $settings = _galleryslider_format_settings($variables['settings']);
  $variables['attributes']['class'][] = 'slider';
  $variables['attributes']['class'][] = '';
  $variables['attributes']['data-settings'] = json_encode($settings);
  $html = '';
  if (!empty($items)) {
    $i = 0;
    $html .= '<ul data-title="Row">';
    foreach ($items as $item) {
      $html .= '<li  ' . $i . '>' . render($item) . '</li>';
      $i++;
    }
  }

  $html .= '</ul>';
  $output = [
    '#type' => 'markup',
    '#markup' => $html,
  ];
  $variables['output'] = render($output);
}

/**
 * Prepares variables for Views galleryslider carousel templates.
 *
 * Default template: galleryslider-views.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - view: A View object.
 */
function template_preprocess_galleryslider_views(array &$variables) {
  $handler = $variables['view']->style_plugin;
  $settings = _galleryslider_format_settings($handler->options);
  $variables['attributes']['class'][] = 'slider ';
  $variables['attributes']['class'][] = '';
  $variables['attributes']['data-settings'] = json_encode($settings);
  template_preprocess_views_view_unformatted($variables);
}

/**
 * Settings to display view at front page.
 *
 * @param $variables
 */
function galleryslider_preprocess_page(&$variables) {
  $node = \Drupal::routeMatch()->getParameter('node');
  $frontpage = \Drupal::service('path.matcher')->isFrontPage();
  if ($node || $frontpage) {
    $variables['#attached']['library'][] = 'galleryslider/galleryslider';
  }
}

/**
 * Default settings for simple.
 *
 * @param null $key
 *
 * @return array|mixed
 */
function _galleryslider_default_settings($key = NULL) {
  $settings = [
    'menu' => 'grid',
    'imgGrid' => '',
    'speed' => 300,
    'image_style' => '',
    'image_link' => '',
  ];

  return isset($settings[$key]) ? $settings[$key] : $settings;
}

/**
 * Return formatted js array of settings.
 *
 * @param $settings
 *
 * @return mixed
 */
function _galleryslider_format_settings($settings) {
  $settings['speed'] = (int) $settings['speed'];
  if (isset($settings['image_style'])) {
    unset($settings['image_style']);
  }
  if (isset($settings['image_link'])) {
    unset($settings['image_link']);
  }

  return $settings;
}

/**
 * Convert a string of settings to array.
 *
 * @param string $str
 *   String to be converted to array.
 *
 * @return array
 *   Converted array.
 */
function _galleryslider_string_to_array($str) {
  $str = trim($str);
  $str = str_replace('[', '', $str);
  $str = str_replace(']', '', $str);
  $str = explode(',', $str);
  return $str;
}