edlp_d8/sites/all/modules/contrib/admin/adminimal_admin_toolbar/adminimal_admin_toolbar.module

<?php

/**
 * @file
 * Functions to support adminimal admin toolbar.
 */

/**
 * Implements hook_preprocess_HOOK().
 */
function adminimal_admin_toolbar_preprocess_html(&$variables) {
  // Add adminimal-admin-toolbar class to the body.
  if (_adminimal_admin_toolbar_is_access()) {
    $variables['attributes']['class'][] = 'adminimal-admin-toolbar';
  }
}

/**
 * Implements hook_page_attachments_alter().
 */
function adminimal_admin_toolbar_page_attachments_alter(array &$page) {
  // Attaches css assets globally.
  if (_adminimal_admin_toolbar_is_access()) {
    $page['#attached']['library'][] = 'adminimal_admin_toolbar/adminimal-admin-toolbar';
  }
}

/**
 * Implements hook_toolbar_alter().
 */
function adminimal_admin_toolbar_toolbar_alter(&$items) {
  // Add class to the user tab so it can be moved to the right.
  if (_adminimal_admin_toolbar_is_access()) {
    $items['user']['#wrapper_attributes']['class'] = array('user-toolbar-tab');
  }
}

/**
 * Helper function for checking user permission.
 * We reallly only want to add styling and changes to toolbar when the user has
 * access.
 *
 * Returns TRUE or FALSE.
 */
function _adminimal_admin_toolbar_is_access() {
  $user = \Drupal::currentUser();
  return $user->hasPermission('access toolbar');
}