AsyncNotifierListener<N extends BaseNotifier<BaseAsyncState<S>>, S extends Object?> class

A widget that listens for changes in the BaseAsyncState of the provided BaseNotifier and triggers side effects.

AsyncNotifierListener is a convenience widget for listening to an asynchronous BaseNotifier and performing side effects via listeners when the state changes, without rebuilding the UI.

N is the type of BaseNotifier and S is the type of data managed by the notifier.

Inheritance
Implemented types

Constructors

AsyncNotifierListener({required Widget child, required void listener(BaseAsyncState<S> state), ShouldProceedCallback<BaseAsyncState<S>>? listenWhen, void onInit(N notifier)?, Key? key})
Creates an AsyncNotifierListener.
const
AsyncNotifierListener.withData({required Widget child, void dataListener(S data)?, VoidCallback? loadingListener, void errorListener(ErrorState error)?, bool listenWhen(S? previous, S? current)?, void onInit(N notifier)?, Key? key})
dataListener, loadingListener, and errorListener are optional callbacks invoked for side effects when the state is BaseAsyncState.data, BaseAsyncState.loading, or BaseAsyncState.error, respectively.

Properties

builder → BuilderCallback<BaseAsyncState<S>>?
Function to build the widget based on the current state and optional child.
finalinherited
buildWhen → ShouldProceedCallback<BaseAsyncState<S>>?
Function to determine if the widget should rebuild when state changes.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
listener → void Function(BaseAsyncState<S> state)?
Function to execute when state changes without triggering a rebuild.
finalinherited
listenWhen → ShouldProceedCallback<BaseAsyncState<S>>?
Function to determine if the listener should be called when state changes.
finalinherited
onInit → void Function(N notifier)?
Function to execute when the widget is first created.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → SingleChildStatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<StatefulWidget>
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
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