BlocPresentationListener<B extends BlocPresentationMixin<dynamic, P>, P> class

A widget that listens to events from a bloc or cubit and invokes a listener function in response to new events.

This widget is used to interact with BlocPresentationMixin and listen to events of type P. When a new event of type P is emitted by the Bloc, the provided listener function is called with the current BuildContext and the event itself.

Example:

BlocPresentationListener<MyBloc, MyEvent>(
  listener: (context, event) {
    // Handle the event here
  },
  bloc: myBloc, // You don't have to pass it if you provided it in context
  child: SomeWidget(),
)
Inheritance

Constructors

BlocPresentationListener({Key? key, required BlocPresentationWidgetListener<P> listener, B? bloc, Widget? child})
Creates a BlocPresentationListener.
const

Properties

bloc → B?
The Bloc from which to listen to events of type P. If not provided, the nearest ancestor Bloc of type B in the widget tree will be used.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
listener → BlocPresentationWidgetListener<P>
A function that defines the behavior when a new event of type P is emitted by the Bloc. It takes the current BuildContext and the event itself as parameters and is responsible for handling the event.
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<BlocPresentationListener<B, P>>
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
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}) → 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