class

TreeNode

@Js
abstract class TreeNode : Obj

TreeNode models a node in a Tree.

See also: docDomkit

 fields parent

Parent node of this node, or null if this node is a root

 methods children

Get the children of this node

 hasChildren

Return true if this has or might have children

 isExpanded

Is this node expanded?

 onElem

Callback to customize Elem for this node

 children virtual TreeNode[] children()

Get the children of this node. If no children return an empty list. Default behavior is no children. This method must return the same instances when called.

 hasChildren virtual Bool hasChildren()

Return true if this has or might have children. This is an optimization to display an expansion control without actually loading all the children. The default returns !children.isEmpty.

 isExpanded Bool isExpanded()

Is this node expanded?

 onElem abstract Void onElem(Elem elem, TreeFlags flags)

Callback to customize Elem for this node.

 parent TreeNode? : parent

Parent node of this node, or null if this node is a root.

 Haxall 4.0.6 ∙ 21-Jul-2026 09:48 EDT