ffw_theme.theme

<?php

/**
 * @file
 * Functions to support theming in ffw_theme theme.
 */

use Drupal\Core\Url;
use Drupal\node\NodeInterface;
use Drupal\views\Views;
use Drupal\Core\Form\FormState;

/**
 * Implements hook_theme_suggestions_HOOK_alter() for page templates.
 */
function ffw_theme_theme_suggestions_page_alter(array &$suggestions, array $variables) {
  if (!in_array('page__front', $suggestions, TRUE)) {
    /** @var \Drupal\node\Entity\Node $node */
    if ($node = \Drupal::routeMatch()->getParameter('node')) {
      if ($node instanceof NodeInterface) {
        $content_type = $node->bundle();
        if ($content_type) {
          array_unshift($suggestions, 'page__type_' . $content_type);
        }
      }
    }
  }

  $route_name = \Drupal::routeMatch()->getRouteName();
  switch ($route_name) {
    case 'system.403':
      $suggestions[] = 'page__403';
      break;

    case 'system.404':
      $suggestions[] = 'page__404';
      break;
  }
}

/**
 * Implements hook_theme_suggestions_HOOK_alter() for taxonomy templates.
 */
function ffw_theme_theme_suggestions_taxonomy_term_alter(array &$suggestions, array $variables, $hook) {
  if ($hook === 'taxonomy_term') {
    /** @var \Drupal\taxonomy\Entity\Term $term */
    $term = $variables['elements']['#taxonomy_term'];
    $suggestions[] = "{$hook}__{$term->bundle()}__{$variables['elements']['#view_mode']}";
  }
}

/**
 * Implements hook_preprocess_html().
 */
// function ffw_theme_preprocess_html(&$variables) {
//   $node = \Drupal::routeMatch()->getParameter('node');
//   if ($node instanceof NodeInterface) {
//     // Example for adding variables
//     if ($node->getType() === 'article') {
//       $variables['#attached']['library'][] = 'ffw_theme/article';
//       $variables['attributes']['class'][] = 'test';
//     }
//   }
// }

/**
 * Implements hook_preprocess_page().
 */
// function ffw_theme_preprocess_page(&$variables) {
//   if ($var === 'value') {
//     $variables['variable'] = TRUE;
//   }
// }

/**
 * Implements hook_preprocess_media().
 */
// function ffw_theme_preprocess_media(&$variables) {
//   /** @var \Drupal\media\Entity\Media $media */
//   $media = $variables['media'];
//   $bundle = $media->bundle();

//   if ($bundle === 'video') {
//     // We just set the video url so it can be used in the twig template.
//     $variables['video_embed_url'] = $media->field_media_oembed_video->value;
//   }
// }

/**
 * Implements hook_preprocess_HOOK().
 */
// function ffw_theme_preprocess_paragraph(&$variables) {

//   /** @var \Drupal\paragraphs\Entity\Paragraph $paragraph */
//   $paragraph = $variables['paragraph'];
//   $bundle = $paragraph->bundle();

//   // Example:
//   // if ($bundle === 'PARAGRAPH_MACHINE_NAME') {
//   //   $variables['attributes']['class'][] = $class;
//   //   $variables['#attached']['library'][] = 'ffw_theme/text';
//   // }
// }

/**
 * Implements hook_theme_suggestions_form_alter().
 */
function ffw_theme_theme_suggestions_form_alter(array &$suggestions, array $variables) {
  $suggestions[] = 'form__' . $variables['element']['#form_id'];
}

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
// function ffw_theme_theme_suggestions_fieldset_alter(array &$suggestions, array $variables) {
//   if (isset($variables['element']['#type'])) {
//     $suggestions[] = 'fieldset__' . $variables['element']['#type'];
//     if (isset($variables["element"]["#name"])) {
//       $suggestions[] = 'fieldset__' . $variables['element']['#type'] . '__' . $variables["element"]["#name"];
//     }
//   }

//   if (isset($variables['element']['#context']['#view_id'])) {
//     $suggestions[] = 'fieldset__' . $variables['element']['#context']['#view_id'] . '__' . $variables['element']['#type'] . '__' . $variables['element']['#name'];
//   }
// }

/**
 * Implements hook_theme_suggestions_field_alter().
 */
function ffw_theme_theme_suggestions_field_alter(array &$suggestions, array $variables) {
  $element = $variables['element'];
  $suggestions[] = 'field__' . $element['#entity_type'] . '__' . $element['#bundle'] . '__' . $element['#view_mode'] . '__' . $element['#field_name'];
}

/**
 * Provide active language code for the language switcher.
 */
function ffw_theme_preprocess_links__language_block(&$variables) {
  $language_interface = \Drupal::languageManager()->getCurrentLanguage();
  $variables['active_language'] = $language_interface->getId();
}

/**
 * Open file link in a new tab.
 */
// function ffw_theme_preprocess_file_link(&$variables) {
//   if ($variables['link'] && $variables['link']['#url'] instanceof Url) {
//     $options = $variables['link']['#url']->getOptions('attributes');
//     $options['attributes'] += ['target' => '_blank'];
//     $variables['link']['#url']->setOptions($options);
//   }
// }

/**
 * Implements hook_theme_suggestions_input_alter().
 */
// function ffw_theme_theme_suggestions_input_alter(&$suggestions, array $variables) {
//   $element = $variables['element'];
//   if ($element['#type'] === 'search_api_autocomplete' && isset($element['#search_id']) && $element['#search_id'] === 'global_search_solr') {
//     $suggestions[] = 'input__textfield__global_autocomplete';
//   }
// }

/**
 * Implements hook_preprocess_HOOK().
 */
// function ffw_theme_preprocess_node(&$variables) {
//   /** @var \Drupal\node\Entity\Node $node */
//   $node = $variables['node'];
//   if ($node->bundle() === 'homepage') {
//     $variables['#attached']['library'][] = 'ffw_theme/homepage';
//   }
// }

/**
 * Implements hook_theme_suggestions_HOOK_alter() for node.html.twig.
 */
// function ffw_theme_theme_suggestions_node_alter(array &$suggestions, array $variables) {
//   // Add template suggestions based on the current view mode.
//   $node = $variables['elements']['#node'];
//   $view_mode = $variables['elements']['#view_mode'];
//   $bundle = $node->bundle();
//   $suggestions[] = 'node__' . $bundle;
//   $suggestions[] = 'node__' . $bundle . '__' . $view_mode;
// }

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
// function ffw_theme_theme_suggestions_block_alter(array &$suggestions, array $variables) {
//   $suggestions[] = 'block__' . $variables['elements']['#plugin_id'];
//   $suggestions[] = 'block__' . $variables['elements']['#id'];
// }

/**
 * Implements hook_preprocess_HOOK().
 */
// function ffw_theme_preprocess_input(&$variables) {
//   // Make autocomplete input in header as 'search' type.
//   if (
//     $variables["element"]["#type"] === 'search_api_autocomplete' &&
//     $variables["element"]["#search_id"] === 'global_search_solr' &&
//     $variables["element"]["#additional_data"]["display"] === 'header_search_autocomplete'
//   ) {
//     $variables["attributes"]["type"] = 'search';
//     // Disable autocomplete in Safari.
//     // https://bytes.grubhub.com/disabling-safari-autofill-for-a-single-line-address-input-b83137b5b1c7
//     $variables["attributes"]["name"] = 'global_search_solr';
//   }
// }

/**
 * Implements hook_preprocess_media_entity_download_link().
 *
 * We want to display the media name instead of the filename.
 */
// function ffw_theme_preprocess_media_entity_download_link(&$variables) {
//   /** @var \Drupal\media\Entity\Media $media */
//   $media = $variables['media_entity'];
//   $variables['title'] = $media->label();
//   $variables['link']['#title'] = $media->label();
// }

/**
 * Implements hook_preprocess_views_view().
 */
// function ffw_theme_preprocess_views_view(&$variables) {
//   $view = $variables['view'];
//   if ($variables['id'] === 'events_overview' && $variables['display_id'] === 'events_overview') {
//     $date_formatter = \Drupal::service('date.formatter');
//     $variables['min_date'] = $date_formatter->format(strtotime($view->exposed_raw_input['date_value']['min']), 'events_date_format');
//     $variables['max_date'] = $date_formatter->format(strtotime($view->exposed_raw_input['date_value']['max']), 'events_date_format');
//   }
// }

/**
 * Implements hook_preprocess_block().
 *
 * Change logo for a specific site.
 */
// function ffw_theme_preprocess_block__system_branding_block(&$variables) {
//   // $variables["site_logo"] = '/themes/custom/ffw_theme/logo_canada.svg';
// }