navigation.module

<?php


/**
 * @file
 */
use Drupal\navigation\TopBarRegion;

/**
 * Implements hook_module_implements_alter().
 */
function navigation_module_implements_alter(&$implementations, $hook) : void {
    if ($hook == 'page_top') {
        $group = $implementations['navigation'];
        unset($implementations['navigation']);
        $implementations['navigation'] = $group;
    }
    if ($hook == 'help') {
        // We take over the layout_builder hook_help().
        unset($implementations['layout_builder']);
    }
}

/**
 * Prepares variables for navigation top bar template.
 *
 * Default template: top-bar.html.twig
 *
 * @param array $variables
 *   An associative array containing:
 *    - element: An associative array containing the properties and children of
 *      the top bar.
 */
function template_preprocess_top_bar(&$variables) : void {
    $element = $variables['element'];
    foreach (TopBarRegion::cases() as $region) {
        $variables[$region->value] = $element[$region->value] ?? NULL;
    }
}