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

<?php

/**
 * @file
 * Contains theme hook implementations and view customization for the module.
 */

use Drupal\views\ViewExecutable;

/**
 * Implements hook_theme().
 */
function timeline_styles_theme($existing, $type, $theme, $path) {
  return [
    'timeline_style' => [
      'variables' => ['view' => NULL, 'rows' => NULL],
      'path' => \Drupal::service('extension.list.module')->getPath('timeline_styles') . '/templates',
    ],
    'timeline_style_image' => [
      'variables' => ['view' => NULL, 'rows' => NULL],
      'path' => \Drupal::service('extension.list.module')->getPath('timeline_styles') . '/templates',
    ],
    'views_view_fields__timeline_styles__page_1' => [
      'template' => 'views-view-fields--timeline-styles--page-1',
      'base hook' => 'views_view_fields',
    ],
  ];
}

/**
 * Adds the global styling library to the view render array.
 */
function timeline_styles_views_pre_render(ViewExecutable $view) {
  $view->element['#attached']['library'][] = 'timeline_styles/global-styling';
}

/**
 * Prepares variables for views timeline_styles template.
 *
 * Template: timeline-styles.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - view: The view object.
 *   - rows: An array of row items. Each row is an array of content.
 */
function template_preprocess_timeline_styles(&$variables) {
  $view = $variables['view'];
  $rows = $variables['rows'];
  $variables['nav'] = [];

  $field = $view->style_plugin->options['timeline_style_field'];
  if (!$field || !isset($view->field[$field])) {
    template_preprocess_views_view_unformatted($variables);
    return;
  }

  $nav = [];
  foreach ($rows as $id => $row) {
    $nav[$id] = [
      '#theme' => 'views_view_field',
      '#view' => $view,
      '#field' => $view->field[$field],
      '#row' => $row['#row'],
    ];
  }

  template_preprocess_views_view_unformatted($variables);
  $variables['nav'] = $nav;
}

/**
 * Prepares variables for views timeline_styles_image template.
 *
 * Template: timeline-styles-image.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - view: The view object.
 *   - rows: An array of row items. Each row is an array of content.
 */
function template_preprocess_timeline_styles_image(&$variables) {
  $view = $variables['view'];
  $rows = $variables['rows'];
  $variables['nav'] = [];

  // Safely check if the field option is set.
  if (
    !isset($view->style_plugin->options['timeline_style_image']) ||
    !$view->style_plugin->options['timeline_style_image']
  ) {
    template_preprocess_views_view_unformatted($variables);
    return;
  }

  $field = $view->style_plugin->options['timeline_style_image'];

  // Check if the specified field exists in the view.
  if (!isset($view->field[$field])) {
    template_preprocess_views_view_unformatted($variables);
    return;
  }

  $nav = [];
  foreach ($rows as $id => $row) {
    $nav[$id] = [
      '#theme' => 'views_view_field',
      '#view' => $view,
      '#field' => $view->field[$field],
      '#row' => $row['#row'],
    ];
  }

  template_preprocess_views_view_unformatted($variables);
  $variables['nav'] = $nav;
}