ValueBuilder<T> class

Manages a local state like ObxValue, but uses a callback instead of a Rx value.

Example:

 ValueBuilder<bool>(
   initialValue: false,
   builder: (value, update) => Switch(
   value: value,
   onChanged: (flag) {
      update( flag );
   },),
   onUpdate: (value) => print("Value updated: $value"),
 ),

Manages local state with a callback-based update mechanism.

This widget is similar to ObxValue but uses a callback instead of a reactive Rx value. It's useful for managing simple local state.

Inheritance
Available extensions

Constructors

ValueBuilder({Key? key, required T initialValue, void onDispose()?, void onUpdate(T)?, required ValueBuilderBuilder<T> builder})
Creates a new ValueBuilder widget.
const

Properties

builder → ValueBuilderBuilder<T>
Builder function that creates the widget tree.
final
hashCode → int
The hash code for this object.
no setterinherited
initialValue → T
The initial value for the state.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onDispose → void Function()?
Callback called when the widget is disposed.
final
onUpdate → void Function(T)?
Callback called when the value is updated.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

blur({double begin = 0, double end = 15, Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

bounce({required double begin, required double end, Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → ValueBuilderState<T>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
fadeIn({Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

fadeOut({Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

flip({double begin = 0, double end = 1, Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
rotate({required double begin, required double end, Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

scale({required double begin, required double end, Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

size({required double begin, required double end, Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

slide({required OffsetBuilder offset, double begin = 0, double end = 1, Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

spin({Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

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
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited
wave({double begin = 0, double end = 1, Duration duration = _defaultDuration, Duration delay = _defaultDelay, ValueSetter<AnimationController>? onComplete, bool isSequential = false}) → GetAnimatedBuilder

Available on Widget, provided by the AnimationExtension extension

Operators

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