class ToolbarMenuLinkTree in Drupal 9

Extends MenuLinkTree to add specific theme suggestions for the toolbar.

Hierarchy

• class \Drupal\Core\Menu\MenuLinkTree implements MenuLinkTreeInterface
  • class \Drupal\toolbar\Menu\ToolbarMenuLinkTree

1 string reference to 'ToolbarMenuLinkTree'

toolbar.services.yml in core/modules/toolbar/toolbar.services.yml

core/modules/toolbar/toolbar.services.yml

1 service uses ToolbarMenuLinkTree

toolbar.menu_tree in core/modules/toolbar/toolbar.services.yml

Drupal\toolbar\Menu\ToolbarMenuLinkTree

File

core/modules/toolbar/src/Menu/ToolbarMenuLinkTree.php, line 10

Namespace

Drupal\toolbar\Menu

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);
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
MenuLinkTree::$controllerResolver	protected	property	The controller resolver.
MenuLinkTree::$menuActiveTrail	protected	property	The active menu trail service.
MenuLinkTree::$menuLinkManager	protected	property	The menu link plugin manager.
MenuLinkTree::$routeProvider	protected	property	The route provider to load routes by name.
MenuLinkTree::$treeStorage	protected	property	The menu link tree storage.
MenuLinkTree::buildItems	protected	function	Builds the #items property for a menu tree's renderable array.
MenuLinkTree::createInstances	protected	function	Returns a tree containing of MenuLinkTreeElement based upon tree data.
MenuLinkTree::getCurrentRouteMenuTreeParameters	public	function	Gets the link tree parameters for rendering a specific menu. Overrides MenuLinkTreeInterface::getCurrentRouteMenuTreeParameters
MenuLinkTree::getExpanded	public	function	Finds expanded links in a menu given a set of possible parents. Overrides MenuLinkTreeInterface::getExpanded
MenuLinkTree::getSubtreeHeight	public	function	Finds the height of a subtree rooted by of the given ID. Overrides MenuLinkTreeInterface::getSubtreeHeight
MenuLinkTree::load	public	function	Loads a menu tree with a menu link plugin instance at each element. Overrides MenuLinkTreeInterface::load
MenuLinkTree::maxDepth	public	function	Returns the maximum depth of tree that is supported. Overrides MenuLinkTreeInterface::maxDepth
MenuLinkTree::transform	public	function	Applies menu link tree manipulators to transform the given tree. Overrides MenuLinkTreeInterface::transform
MenuLinkTree::__construct	public	function	Constructs a \Drupal\Core\Menu\MenuLinkTree object.
ToolbarMenuLinkTree::build	public	function	Builds a renderable array from a menu tree. Overrides MenuLinkTree::build