TreeItem<T> class

TreeItem<T> class final

An immutable item in an interactive TreeModel.

IDs must be unique across the complete tree. They are used to preserve selection and expansion state when TreeModel.replaceItems is called.

Constructors

TreeItem({required String id, required String label, required T value, List<TreeItem<T>> children = const [], String? icon, bool initiallyExpanded = true, bool selectable = true}): Creates a tree item.

children → List<TreeItem<T>>: Nested child items.
final
hasChildren → bool: Whether this item contains children.
no setter
hashCode → int: The hash code for this object.
no setterinherited
icon → String?: Optional icon rendered before label.
final
id → String: Stable identity for this item.
final
initiallyExpanded → bool: Initial expansion state when this item first enters a model.
final
label → String: Text shown for this item.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
selectable → bool: Whether keyboard and pointer selection may target this item.
final
value → T: Consumer-owned value associated with this item.
final

noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited