WidgetOrderTraversalPolicy class

A FocusTraversalPolicy that traverses the focus order in widget hierarchy order.

This policy is used when the order desired is the order in which widgets are created in the widget hierarchy.

See also:

Inheritance
Mixed-in types

Constructors

WidgetOrderTraversalPolicy({TraversalRequestFocusCallback? requestFocusCallback})
Constructs a traversal policy that orders widgets for keyboard traversal based on the widget hierarchy order.

Properties

hashCode → int
The hash code for this object.
no setterinherited
requestFocusCallback → TraversalRequestFocusCallback
The callback used to move the focus from one focus node to another when traversing them using a keyboard. By default it requests focus on the next node and ensures the node is visible if it's in a scrollable.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

changedScope({FocusNode? node, FocusScopeNode? oldScope}) → void
This is called whenever the given node is re-parented into a new scope, so that the policy has a chance to update or invalidate any cached data that it maintains per scope about the node.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
findFirstFocus(FocusNode currentNode, {bool ignoreCurrentFocus = false}) → FocusNode?
Returns the node that should receive focus if focus is traversing forwards, and there is no current focus.
inherited
findFirstFocusInDirection(FocusNode currentNode, TraversalDirection direction) → FocusNode?
Returns the first node in the given direction that should receive focus if there is no current focus in the scope to which the currentNode belongs.
inherited
findLastFocus(FocusNode currentNode, {bool ignoreCurrentFocus = false}) → FocusNode
Returns the node that should receive focus if focus is traversing backwards, and there is no current focus.
inherited
inDirection(FocusNode currentNode, TraversalDirection direction) → bool
Focuses the next widget in the given direction in the FocusScope that contains the currentNode.
inherited
invalidateScopeData(FocusScopeNode node) → void
Clears the data associated with the given FocusScopeNode for this object.
inherited
next(FocusNode currentNode) → bool
Focuses the next widget in the focus scope that contains the given currentNode.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
previous(FocusNode currentNode) → bool
Focuses the previous widget in the focus scope that contains the given currentNode.
inherited
sortDescendants(Iterable<FocusNode> descendants, FocusNode currentNode) → Iterable<FocusNode>
Sorts the given descendants into focus order.
override
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringShort() → String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited