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<?php
namespace Drupal\toolbar\Menu;
use Drupal\Core\Menu\MenuLinkTree;
/**
* Extends MenuLinkTree to add specific theme suggestions for the toolbar.
*/
class ToolbarMenuLinkTree extends MenuLinkTree {
/**
* {@inheritdoc}
*/
public function build(array $tree, $level = 0) {
if ($level == 0) {
if (!$tree) {
return [];
}
$build = parent::build($tree, $level);
/** @var \Drupal\Core\Menu\MenuLinkInterface $link */
$first_link = reset($tree)->link;
// Get the menu name of the first link.
$menu_name = $first_link->getMenuName();
// Add a more specific theme suggestion to differentiate this rendered
// menu from others.
$build['#menu_name'] = $menu_name;
$build['#theme'] = 'menu__toolbar__' . strtr($menu_name, '-', '_');
return $build;
}
else {
return parent::build($tree, $level);
}
}
}