OnReactive class

First choice widget to listen to an injected state.

It explicitly register injected state consumed in its child widget tree.

Example:

final counter1 = RM.inject(()=> 0) // Or just use extension: 0.inj()
final counter2 = 0.inj();
int get sum => counter1.state + counter2.state;

//In the widget tree:
Column(
    children: [
        OnReactive( // Will listen to counter1
            ()=> Text('${counter1.state}');
        ),
        OnReactive( // Will listen to counter2
            ()=> Text('${counter2.state}');
        ),
        OnReactive(// Will listen to both counter1 and counter2
            ()=> Text('$sum');
        )
    ]
)
Inheritance

Constructors

OnReactive(Widget builder(), {bool shouldRebuild(SnapState oldSnap, SnapState newSnap)?, SideEffects? sideEffects, String? debugPrintWhenRebuild, String? debugPrintWhenObserverAdd, Key? key})
First choice widget to listen to an injected state.
const

Properties

builder → Widget Function()
Widget tree to rebuild when any of subscribed state emits notification.
final
debugPrintWhenObserverAdd → String?
Debug print an informative message when a state is added to the list of subscription.
final
debugPrintWhenRebuild → String?
Debug print an informative message when the widget is rebuild with the name of the state that has emitted the notification.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
shouldRebuild → (bool Function(SnapState oldSnap, SnapState newSnap)?)
Whether to rebuild the widget after a state emits notification.
final
sideEffects → SideEffects?
Side effects to be invoked
final

Methods

build(BuildContext context) → Widget
override
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → _ReactiveStatelessWidgetState
Creates the mutable state for this widget at a given 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
didAddObserverForDebug(List<ReactiveModel> observers) → void
Called in debug mode only when an state is added to the list of listeners
override
didMountWidget(BuildContext context) → void
Called when the widget is first inserted in the widget tree
override
didNotifyWidget(SnapState snap) → void
Called when the widget is notified to rebuild, it exposes the SnapState of the state that emits the notification
override
didUnmountWidget() → void
Called when the widget is removed from the widget tree
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
shouldRebuildWidget(SnapState oldSnap, SnapState currentSnap) → bool
Condition on when to rebuild the widget, it exposes the old and the new SnapState of the the state that emits the notification.
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
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → 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