zen.theme

<?php
/**
 * @file
 * Contains functions to alter Drupal's markup for the Zen theme.
 *
 * IMPORTANT WARNING: DO NOT MODIFY THIS FILE.
 *
 * The base Zen theme is designed to be easily extended by its sub-themes. You
 * shouldn't modify this or any of the CSS or PHP files in the root zen/ folder.
 * See the online documentation for more information:
 *   https://drupal.org/documentation/theme/zen
 */


// Auto-rebuild the theme registry during theme development.
if (theme_get_setting('zen_rebuild_registry') && !defined('MAINTENANCE_MODE')) {
  // Rebuild .info.yml data and clear Twig cache.
  $theme_handler = \Drupal::service('theme_handler');
  $theme_handler->refreshInfo();

  // Rebuild theme registry.
  // @TODO Clear the theme registry.
  // $theme_registry = \Drupal::service('theme.registry');
  // $theme_registry->reset();
  // $theme_registry->get();

  // @TODO: Turn on Twig debugging. Though its probably impossible from a theme.
  // $GLOBALS['conf']['theme_debug'] = TRUE;
}

/**
 * Implements HOOK_theme().
 */
function zen_theme(&$existing, $type, $theme, $path) {
  include_once './' . drupal_get_path('theme', 'zen') . '/zen-internals/theme-registry.inc';
  return _zen_theme($existing, $type, $theme, $path);
}


/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function zen_theme_suggestions_page_alter(array &$suggestions, array $variables) {
  // If on an individual node page, add the node type to theme suggestions.
  if ($node = \Drupal::routeMatch()->getParameter('node')) {
    $first_suggestion = array_shift($suggestions);
    array_unshift($suggestions, 'page__node__' . $node->bundle());
    if ($first_suggestion) {
      array_unshift($suggestions, $first_suggestion);
    }
    if (in_array('page__node__edit', $suggestions)) {
      $suggestions[] = 'page__node__edit__' . $node->bundle();
    }
  }
}

/**
 * Implements hook_pre_render_HOOK() for menu-local-tasks templates.
 *
 * Use preprocess hook to convert menu_local_task into variables needed by the
 * tabs component.
 */
function zen_preprocess_menu_local_tasks(&$variables) {
  foreach (array('primary', 'secondary') as $type) {
    $tabs = array();

    // Sort the tabs by #weight.
    uasort($variables[$type], array('Drupal\Component\Utility\SortArray', 'sortByWeightProperty'));

    foreach (array_keys($variables[$type]) as $key) {
      // Add the tab to a new array.
      $tabs[$key] = array(
        'active' => $variables[$type][$key]['#active'],
        'url' => $variables[$type][$key]['#link']['url']->toString(),
        'text' => \Drupal\Component\Utility\Html::escape($variables[$type][$key]['#link']['title'])
      );

      // Check if the tab should be shown by rendering the original.
      $link = drupal_render($variables[$type][$key]);
      if (!$link) {
        unset($tabs[$key]);
      }
    }

    // Overwrite the original tabs data.
    $variables[$type] = $tabs;
  }
}