PreviousFocusAction class

An Action that moves the focus to the previous focusable node in the focus order.

This action is the default action registered for the PreviousFocusIntent, and by default is bound to a combination of the LogicalKeyboardKey.tab key and the LogicalKeyboardKey.shift key in the WidgetsApp.

See FocusTraversalPolicy for more information about focus traversal.

Inheritance

Constructors

PreviousFocusAction()

Properties

callingAction Action<PreviousFocusIntent>?
The Action overridden by this Action.
no setterinherited
hashCode int
The hash code for this object.
no setterinherited
intentType Type
Gets the type of intent this action responds to.
no setterinherited
isActionEnabled bool
Whether this Action is inherently enabled.
no setterinherited
runtimeType Type
A representation of the runtime type of the object.
no setterinherited

Methods

addActionListener(ActionListenerCallback listener) → void
Register a callback to listen for changes to the state of this action.
inherited
consumesKey(PreviousFocusIntent intent) bool
Indicates whether this action should treat key events mapped to this action as being "handled" when it is invoked via the key event.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
invoke(PreviousFocusIntent intent) bool
Attempts to pass the focus to the previous widget.
override
isEnabled(PreviousFocusIntent intent) bool
Returns true if the action is enabled and is ready to be invoked.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyActionListeners() → void
Call all the registered listeners.
inherited
removeActionListener(ActionListenerCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toKeyEventResult(PreviousFocusIntent intent, covariant bool invokeResult) KeyEventResult
Converts the result of invoke of this action to a KeyEventResult.
override
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