og_sm-8.x-1.0/og_sm_admin_menu/og_sm_admin_menu.module

<?php

/**
 * @file
 * Site Manager Administration module.
 */

use Drupal\Core\Template\Attribute;
use Drupal\Core\Url;
use Drupal\og_sm\OgSm;
use Drupal\og_sm_admin_menu\Render\Element\SiteManagerAdminToolbar;

/**
 * Implements hook_local_tasks_alter().
 */
function og_sm_admin_menu_local_tasks_alter(&$local_tasks) {
  // We are taking over the admin route and don't want it to be a local task for
  // site nodes.
  unset($local_tasks['og.og_admin_routes:node.og_admin_routes']);
}

/**
 * Implements hook_toolbar().
 *
 * @SuppressWarnings(PHPMD.CyclomaticComplexity)
 */
function og_sm_admin_menu_toolbar() {
  $site_manager = OgSm::siteManager();
  $links = [];

  $main_tab = NULL;
  $platform_url = Url::fromRoute('<front>');
  $platform_access = FALSE;
  // Check if we are allowed to the platform, if so set the platform URL as our
  // main tab.
  if (\Drupal::pathValidator()->isValid($platform_url->getInternalPath())) {
    $platform_access = TRUE;
    $main_tab = [
      'title' => t('Platform'),
      'url' => $platform_url,
    ];
  }

  $current_site = $site_manager->currentSite();
  $tab_cache_tags = [];
  // If we are currently within site context, the main tab should be the site,
  // if the main tab was previously set it should be added to the links array.
  if ($current_site) {
    if ($main_tab) {
      $links['platform'] = $main_tab;
    }

    $main_tab = [
      'title' => $current_site->label(),
      'url' => $site_manager->getSiteHomePage($current_site),
    ];
    $tab_cache_tags[] = 'node:' . $current_site->id();
  }

  // If we don't have access to the platform, and we are outside of site context
  // don't show the site switcher.
  if (!$main_tab) {
    return [];
  }

  $switch_sites = $site_manager->getUserManageableSites();
  if (!$platform_access && count($switch_sites) < 2) {
    return [];
  }

  $cache_tags = [];
  foreach ($switch_sites as $site) {
    if ($current_site && $current_site->id() === $site->id()) {
      continue;
    }

    $links['site-' . $site->id()] = [
      'title' => $site->label(),
      'url' => $site_manager->getSiteHomePage($site),
    ];
    $cache_tags[] = 'node:' . $site->id();
  }

  $items = [];
  $items['site_switcher'] = [
    '#type' => 'toolbar_item',
    'tab' => [
      '#type' => 'link',
      '#title' => $main_tab['title'],
      '#url' => $main_tab['url'],
      '#attributes' => [
        'title' => t('Return to site content'),
        'class' => ['toolbar-site-switcher'],
      ],
      '#cache' => [
        'contexts' => [
          'og_group_context',
          'user',
        ],
        'tags' => $tab_cache_tags,
      ],
    ],
    'tray' => [
      '#heading' => t('Site switcher'),
      'site_switcher' => [
        '#theme' => 'links__toolbar',
        '#links' => $links,
        '#attributes' => [
          'class' => ['toolbar-menu'],
        ],
        '#cache' => [
          'tags' => $cache_tags,
        ],
      ],
    ],
    '#attached' => [
      'library' => [
        'og_sm_admin_menu/og_sm.site_switcher',
      ],
    ],
    '#weight' => 200,
  ];

  return $items;
}

/**
 * Implements hook_toolbar_alter().
 */
function og_sm_admin_menu_toolbar_alter(&$items) {
  $items['administration']['tray']['toolbar_administration']['#pre_render'] = [
    [SiteManagerAdminToolbar::class, 'preRenderTray'],
  ];
  $items['administration']['#cache']['contexts'][] = 'og_group_context';
}

/**
 * Implements hook_preprocess_HOOK() for HTML document templates.
 */
function og_sm_admin_menu_preprocess_html(&$variables) {
  // Make sure the root path is set to "admin" for group admin pages. This adds
  // a "page-admin" class to the body tags which caused the "Back to home"
  // to appear on admin pages.
  if ($variables['root_path'] === 'group' && \Drupal::routeMatch()->getRouteObject()->getOption('_admin_route')) {
    $variables['root_path'] = 'admin';
  }

  // Alter the toolbar's #access key to also include the og permission when in
  // site context.
  $toolbar_access = og_sm_site_user_access('access toolbar');
  if ($toolbar_access) {
    $variables['page_top']['toolbar']['#access'] = $toolbar_access;
    $variables['page_top']['toolbar']['#cache']['contexts'][] = 'og_group_context';
    $variables['attributes'] = new Attribute($variables['attributes']);
    $variables['attributes']->addClass([
      'toolbar-tray-open',
      'toolbar-horizontal',
      'toolbar-fixed',
      'toolbar-loading',
    ]);
  }
}