ServiceBlocListener<Bloc extends ServiceBloc<ServiceRequestedEvent, ResponseData>, ServiceRequestedEvent extends ServiceRequested, ResponseData> class

ServiceBlocListener handles callback in response to relative state.

If parameter listenWhen is omitted, default listenWhen will only return true when certain parameter is set. For example onInitial onLoading onResponded onSucceed onFailure.

Inheritance
Implemented types

Constructors

ServiceBlocListener.new({Key? key, Bloc? bloc, BlocListenerCondition<ServiceState>? listenWhen, dynamic onInitial(BuildContext context, ServiceInitial state)?, dynamic onLoading(BuildContext context, ServiceLoadInProgress<ServiceRequestedEvent> state, ServiceRequestedEvent event)?, dynamic onResponded(BuildContext context, ServiceResponseState<ServiceRequestedEvent> state, ServiceRequestedEvent event)?, dynamic onSuccess(BuildContext context, ServiceLoadSuccess<ServiceRequestedEvent, ResponseData> state, ServiceRequestedEvent event, ResponseData data)?, dynamic onFailure(BuildContext context, ServiceLoadFailure<ServiceRequestedEvent> state, ServiceRequestedEvent event, dynamic error)?, Widget? child})
A constructor for creating a ServiceBlocListener with predefined state callback.

Properties

bloc → Bloc?
The bloc whose state will be listened to. Whenever the bloc's state changes, listener will be invoked.
finalinherited
child → Widget?
The widget which will be rendered as a descendant of the BlocListenerBase.
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 → BlocWidgetListener<ServiceState>
The BlocWidgetListener which will be called on every state change. This listener should be used for any code which needs to execute in response to a state change.
finalinherited
listenWhen → BlocListenerCondition<ServiceState>?
An optional listenWhen can be implemented for more granular control over when listener is called. listenWhen will be invoked on each bloc state change. listenWhen takes the previous state and current state and must return a bool which determines whether or not the listener function will be invoked. The previous state will be initialized to the state of the bloc when the BlocListener is initialized. listenWhen is optional and if omitted, it will default to true.
finalinherited
onFailure → dynamic Function(BuildContext context, ServiceLoadFailure<ServiceRequestedEvent> state, ServiceRequestedEvent event, dynamic error)?
A function which is only called when listenWhen is omitted or custom listenWhen is passed and onFailure is not omitted and current state is ServiceLoadFailure.
final
onInitial → dynamic Function(BuildContext context, ServiceInitial state)?
A function which is only called when listenWhen is omitted or custom listenWhen is passed, onInitial is not omitted and current state is ServiceInitial.
final
onLoading → dynamic Function(BuildContext context, ServiceLoadInProgress<ServiceRequestedEvent> state, ServiceRequestedEvent event)?
A function which is only called when listenWhen is omitted or custom listenWhen is passed, onLoading is not omitted and current state is ServiceLoadInProgress.
final
onResponded → dynamic Function(BuildContext context, ServiceResponseState<ServiceRequestedEvent> state, ServiceRequestedEvent event)?
A function which is only called when listenWhen is omitted or custom listenWhen is passed and onResponded is not omitted and current state is ServiceResponseState.
final
onSuccess → dynamic Function(BuildContext context, ServiceLoadSuccess<ServiceRequestedEvent, ResponseData> state, ServiceRequestedEvent event, ResponseData data)?
A function which is only called when listenWhen is omitted or custom listenWhen is passed and onSucceed is not omitted and current state is ServiceLoadSuccess.
final
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() → SingleChildState<BlocListenerBase<Bloc, ServiceState>>
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