Chris@3: <?php
Chris@3: 
Chris@3: /**
Chris@3:  * @file
Chris@3:  * Functions to support theming in the Bartik theme.
Chris@3:  */
Chris@3: 
Chris@3: use Drupal\Core\Form\FormStateInterface;
Chris@3: use Drupal\Core\Template\Attribute;
Chris@3: 
Chris@3: /**
Chris@3:  * Implements hook_preprocess_HOOK() for HTML document templates.
Chris@3:  *
Chris@3:  * Adds body classes if certain regions have content.
Chris@3:  */
Chris@3: function isobartik_preprocess_html(&$variables) {
Chris@3:   // Add information about the number of sidebars.
Chris@3:   if (!empty($variables['page']['sidebar_first']) && !empty($variables['page']['sidebar_second'])) {
Chris@3:     $variables['attributes']['class'][] = 'layout-two-sidebars';
Chris@3:   }
Chris@3:   elseif (!empty($variables['page']['sidebar_first'])) {
Chris@3:     $variables['attributes']['class'][] = 'layout-one-sidebar';
Chris@3:     $variables['attributes']['class'][] = 'layout-sidebar-first';
Chris@3:   }
Chris@3:   elseif (!empty($variables['page']['sidebar_second'])) {
Chris@3:     $variables['attributes']['class'][] = 'layout-one-sidebar';
Chris@3:     $variables['attributes']['class'][] = 'layout-sidebar-second';
Chris@3:   }
Chris@3:   else {
Chris@3:     $variables['attributes']['class'][] = 'layout-no-sidebars';
Chris@3:   }
Chris@3: 
Chris@3:   if (!empty($variables['page']['featured_top'])) {
Chris@3:     $variables['attributes']['class'][] = 'has-featured-top';
Chris@3:   }
Chris@3: 
Chris@3: }
Chris@3: 
Chris@3: /**
Chris@3:  * Implements hook_preprocess_HOOK() for page templates.
Chris@3:  */
Chris@3: function isobartik_preprocess_page_title(&$variables) {
Chris@3:   // Since the title and the shortcut link are both block level elements,
Chris@3:   // positioning them next to each other is much simpler with a wrapper div.
Chris@3:   if (!empty($variables['title_suffix']['add_or_remove_shortcut']) && $variables['title']) {
Chris@3:     // Add a wrapper div using the title_prefix and title_suffix render
Chris@3:     // elements.
Chris@3:     $variables['title_prefix']['shortcut_wrapper'] = [
Chris@3:       '#markup' => '<div class="shortcut-wrapper clearfix">',
Chris@3:       '#weight' => 100,
Chris@3:     ];
Chris@3:     $variables['title_suffix']['shortcut_wrapper'] = [
Chris@3:       '#markup' => '</div>',
Chris@3:       '#weight' => -99,
Chris@3:     ];
Chris@3:     // Make sure the shortcut link is the first item in title_suffix.
Chris@3:     $variables['title_suffix']['add_or_remove_shortcut']['#weight'] = -100;
Chris@3:   }
Chris@3: }
Chris@3: 
Chris@3: /**
Chris@3:  * Implements hook_preprocess_HOOK() for maintenance-page.html.twig.
Chris@3:  */
Chris@3: function isobartik_preprocess_maintenance_page(&$variables) {
Chris@3:   // By default, site_name is set to Drupal if no db connection is available
Chris@3:   // or during site installation. Setting site_name to an empty string makes
Chris@3:   // the site and update pages look cleaner.
Chris@3:   // @see template_preprocess_maintenance_page
Chris@3:   if (!$variables['db_is_active']) {
Chris@3:     $variables['site_name'] = '';
Chris@3:   }
Chris@3: 
Chris@3:   // Bartik has custom styling for the maintenance page.
Chris@4:   $variables['#attached']['library'][] = 'isobartik/maintenance_page';
Chris@3: }
Chris@3: 
Chris@3: /**
Chris@3:  * Implements hook_preprocess_HOOK() for node.html.twig.
Chris@3:  */
Chris@3: function isobartik_preprocess_node(&$variables) {
Chris@3:   // Remove the "Add new comment" link on teasers or when the comment form is
Chris@3:   // displayed on the page.
Chris@3:   if ($variables['teaser'] || !empty($variables['content']['comments']['comment_form'])) {
Chris@3:     unset($variables['content']['links']['comment']['#links']['comment-add']);
Chris@3:   }
Chris@3: }
Chris@3: 
Chris@3: /**
Chris@3:  * Implements hook_preprocess_HOOK() for block.html.twig.
Chris@3:  */
Chris@3: function isobartik_preprocess_block(&$variables) {
Chris@3:   // Add a clearfix class to system branding blocks.
Chris@3:   if ($variables['plugin_id'] == 'system_branding_block') {
Chris@3:     $variables['attributes']['class'][] = 'clearfix';
Chris@3:   }
Chris@3: }
Chris@3: 
Chris@3: /**
Chris@3:  * Implements hook_preprocess_HOOK() for menu.html.twig.
Chris@3:  */
Chris@3: function isobartik_preprocess_menu(&$variables) {
Chris@3:   $variables['attributes']['class'][] = 'clearfix';
Chris@3: }
Chris@3: 
Chris@3: /**
Chris@3:  * Implements hook_theme_suggestions_HOOK_alter() for form templates.
Chris@3:  */
Chris@3: function isobartik_theme_suggestions_form_alter(array &$suggestions, array $variables) {
Chris@3:   if ($variables['element']['#form_id'] == 'search_block_form') {
Chris@3:     $suggestions[] = 'form__search_block_form';
Chris@3:   }
Chris@3: }
Chris@3: 
Chris@3: /**
Chris@3:  * Implements hook_form_alter() to add classes to the search form.
Chris@3:  */
Chris@3: function isobartik_form_alter(&$form, FormStateInterface $form_state, $form_id) {
Chris@3:   if (in_array($form_id, ['search_block_form', 'search_form'])) {
Chris@3:     $key = ($form_id == 'search_block_form') ? 'actions' : 'basic';
Chris@3:     if (!isset($form[$key]['submit']['#attributes'])) {
Chris@3:       $form[$key]['submit']['#attributes'] = new Attribute();
Chris@3:     }
Chris@3:     $form[$key]['submit']['#attributes']->addClass('search-form__submit');
Chris@3:   }
Chris@3: }