FocusNode class

A focusable point in the focus tree that notifies listeners when its focus state changes.

Inheritance

Implementers

Constructors

FocusNode({String? debugLabel, FocusOnKeyEvent? onKeyEvent, bool canRequestFocus = true}): Configures a detached node with optional diagnostics and key handling.

canRequestFocus ↔ bool: Whether the focus manager may assign primary focus to this node.
getter/setter pair
children → Iterable<FocusNode>: Live read-only view of direct focus children in insertion order.
no setter
debugLabel → String?: Optional label used only for diagnostics.
final
hasFocus → bool: Whether this node itself currently holds focus.
no setter
hashCode → int: The hash code for this object.
no setterinherited
hasListeners → bool: Whether at least one listener is registered.
no setterinherited
hasPrimaryFocus → bool: Whether this node is its manager's current primary focus.
no setter
isAttached → bool: Whether this node is registered with a FocusManager.
no setter
onKeyEvent ↔ FocusOnKeyEvent?: Handler consulted while a key event bubbles through this node.
getter/setter pair
parent → FocusNode?: Direct parent in the focus tree, or null when none is assigned.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

addListener(VoidCallback listener) → void: Register listener for future notifications.
inherited
dispose() → void: Detaches this node before releasing its notifier listeners.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void: Notifies all registered listeners using a stable snapshot.
inherited
removeListener(VoidCallback listener) → void: Remove one registration of listener.
inherited
requestFocus() → void: Requests primary focus, throwing unless this node is attached to a manager.
toString() → String: A string representation of this object.
inherited
unfocus({bool descendants = false}) → void: Unfocuses this node or its currently focused descendant; descendants also recurses through every child subtree. Unattached nodes are a no-op.