MappedMessenger<T extends Messenger<Model>, Model, ChildModel> class abstract

Helper messenger to create child-messengers. They operate on a subset of the original model, so you can do simpler messages that represent the transitions of a single widget.

Implemented types

• Messenger<ChildModel>

Constructors

MappedMessenger(T original, ToChild<Model, ChildModel> mapToChild, Merger<Model, ChildModel> merge)

Properties

changes → Stream<ChildModel>

no setter, override

dispatcher → Dispatch<ChildModel>

Dispatch a message created using a function

no setter, override

firstModel → ChildModel

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

model → Future<ChildModel>

Recover the latest model in a async getter

no setter, override

original → T

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

addDependent(Messenger dependent) → void

override

commandDispatcher(Cmd<ChildModel> commands) → void

Dispatch a command, reusing the same model

override

dispose() → void

override

doWithModel(FutureOr<void> action(ChildModel model), {Update<ChildModel> onSuccessUpdate(ChildModel model)?, ChildModel onSuccessModel(ChildModel model)?, Cmd<ChildModel>? onSuccessCommands, Update<ChildModel> onErrorUpdate(ChildModel model, Exception e)?, ChildModel onErrorModel(ChildModel model, Exception e)?, Cmd<ChildModel> onErrorCommands(Exception e)?, bool doRebuild = true}) → void

Uses the latest model to do some computation

override

extract<T>(T extractFunction(ChildModel)) → Future<T>

Extract a future value mapped from the model

override

modelDispatcher(ChildModel msg(ChildModel model), {bool doRebuild = true}) → void

Dispatch a message that just returns the new model from the old model

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

reset() → void

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited