Scope class

A widget that watches the Reactable and rebuilds when the reactable changes. This widget must contains at least one Reactable in the builder function.

Scope(
 builder: (context, Observable<int> counter) => Column(
  children: [
    Text('counter: $counter'),
    TextButton(
      child: const Text("+"),
     onPressed: () => counter.value++,
    ),
  ],
),
)

You can also use ScopedValue to watch a temporary Reactable

You can also a condition to update the widget with where parameter. That mean that the widget will only be updated when the where result is true. if want to see more information of what is happening in the scope, you can use the debug parameter. by default the scope will throw an error if no reactable is within it. you can change this behavior with the throwOnError parameter.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• BaseScope
• Scope

Constructors

Scope({required WidgetBuilder builder, Where? where, bool? debug, bool? autoDispose, bool? throwOnError, Key? key})

Properties

autoDispose → bool?

final, inherited

builder → WidgetBuilder

final

debug → bool?

final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

name → String

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

throwOnError → bool?

final, inherited

where → Where?

final, inherited

Methods

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

override

createElement() → StatelessElement

Creates a StatelessElement to manage this widget's location in the tree.

inherited

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

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

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

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

Operators

operator ==(Object other) → bool

The equality operator.

inherited