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<?php
declare(strict_types=1);
namespace Drupal\navigation\Plugin\Block;
use Drupal\Core\Block\Attribute\Block;
use Drupal\Core\Block\BlockBase;
use Drupal\Core\Cache\CacheableMetadata;
use Drupal\Core\Menu\MenuLinkDefault;
use Drupal\Core\Menu\MenuLinkTreeElement;
use Drupal\Core\Menu\MenuTreeParameters;
use Drupal\Core\Security\Attribute\TrustedCallback;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\user\Entity\User;
/**
* Defines a user navigation block.
*
* @internal
*/
#[Block(
id: 'navigation_user',
admin_label: new TranslatableMarkup('User'),
)]
final class NavigationUserBlock extends BlockBase {
const string NAVIGATION_LINKS_MENU = 'navigation-user-links';
/**
* {@inheritdoc}
*/
public function build(): array {
return [
'#create_placeholder' => TRUE,
'#lazy_builder' => [static::class . '::buildLinks', [$this->configuration['label']]],
'#cache' => [
'keys' => ['navigation_user_block'],
],
];
}
/**
* Lazy builder callback.
*/
#[TrustedCallback]
public static function buildLinks(string $label): array {
$parameters = new MenuTreeParameters();
$parameters
->setMinDepth(0)
->setMaxDepth(2)
->onlyEnabledLinks();
/** @var \Drupal\Core\Menu\MenuLinkTreeInterface $menu_tree */
$menu_tree = \Drupal::service('navigation.menu_tree');
$subtree = $menu_tree->load(static::NAVIGATION_LINKS_MENU, $parameters);
// Load the current user so that they can be added as a cacheable dependency
// of the final render array.
$account = User::load(\Drupal::currentUser()->id());
$menu_definition = [
'menu_name' => static::NAVIGATION_LINKS_MENU,
'route_name' => 'user.page',
'route_parameters' => [],
'title' => $account->getDisplayName(),
'description' => '',
'options' => [],
'provider' => 'navigation',
'enabled' => '1',
];
// Create a parent link that serves as a wrapper.
// If the menu is removed for any reason, this item shows a link to the
// user profile page as a fallback.
$link = MenuLinkDefault::create(\Drupal::getContainer(), [], 'navigation.user_links.user.wrapper', $menu_definition);
$tree = new MenuLinkTreeElement($link, TRUE, 1, FALSE, $subtree);
$manipulators = [
['callable' => 'menu.default_tree_manipulators:checkAccess'],
['callable' => 'menu.default_tree_manipulators:generateIndexAndSort'],
];
$tree = $menu_tree->transform([$tree], $manipulators);
$build = $menu_tree->build($tree);
$build['#title'] = $label;
$build['#cache']['contexts'][] = 'user';
$cacheable_metadata = CacheableMetadata::createFromRenderArray($build);
$cacheable_metadata->addCacheableDependency($account);
$cacheable_metadata->applyTo($build);
return $build;
}
}
|
