HydratedFastCalculatorBloc<E extends FastCalculatorBlocEvent<FastCalculatorResults>, S extends FastCalculatorBlocState<FastCalculatorFields, FastCalculatorResults>, D extends FastCalculatorDocument, R extends FastCalculatorResults> class abstract

An abstract class that extends FastCalculatorBloc to create a hydrated calculator bloc.

This hydrated calculator bloc can persist its state and recover from it when needed.

The class requires the following generic types: E: The type of events that the bloc responds to (must extend FastCalculatorBlocEvent).

S: The type of state that the bloc manages (must extend FastCalculatorBlocState).

D: The type of calculator document used to persist the state (must extend FastCalculatorDocument).

R: The type of calculator results managed by the bloc (must extend FastCalculatorResults).

Inheritance

• Object
• Bloc<S>
• BidirectionalBloc<E, S>
• FastCalculatorBloc<E, S, R>
• HydratedFastCalculatorBloc

Constructors

HydratedFastCalculatorBloc({required S? initialState, required FastCalculatorDataProvider<D> dataProvider, Duration autoRefreshPeriod = const Duration(minutes: 1), bool? isAutoRefreshEnabled = false, bool debouceComputeEvents = false, String? debugLabel, FastCalculatorBlocDelegate? delegate, BuildContext? getContext()?})

Properties

addDebouncedComputeEvent ↔ FastCalculatorBlocDebounceEventCallback<E>

getter/setter pair, inherited

addDebouncedLoadMetadataEvent ↔ FastCalculatorBlocDebounceEventCallback<E>

getter/setter pair, inherited

addDebouncedSaveEntryEvent ↔ FastCalculatorBlocDebounceEventCallback<E>

getter/setter pair

addEvent → dynamic Function(BlocEvent)

Notifies the BloC of a new event which triggers mapEventToState. If dispose has already been called, any calls to dispatchEvent will be ignored and will not result in any state changes.

no setter, inherited

analyticsEventController → BehaviorSubject<BlocAnalyticsEvent>

final, inherited

appSettingsBloc → FastAppSettingsBloc

The app settings bloc used by the calculator.

final, inherited

autoRefreshPeriod ↔ Duration

The auto-refresh period.

late, final, inherited

blocState ↔ S

The current BloC's state.

getter/setter pair, inherited

cancelableOperations ↔ List<CancelableOperation>

The list of cancelable operations.

getter/setter pair, inherited

canInitialize → bool

Whether the BloC can be initialized.

no setter, inherited

closed ↔ bool

Whether the BloC is closed.

getter/setter pair, inherited

context → BuildContext?

no setter, inherited

currentMetadata → Map<String, dynamic>

no setter, inherited

currentState → S

The current BloC's state.

no setter, inherited

dataProvider → FastCalculatorDataProvider<D>

The dataProvider is used to persist the calculator document.

final

debouceComputeEvents ↔ bool

Determines if compute events should be debounced or not.

late, final, inherited

debugLabel ↔ String?

The debug label used to identify the bloc in the logs.

late, final, inherited

defaultCalculatorState ↔ S

The default state of the calculator.

getter/setter pair, inherited

defaultDocument ↔ D

The defaultDocument is used to hydrate the bloc calculator state.

getter/setter pair

delegate ↔ FastCalculatorBlocDelegate?

late, final, inherited

dispatchState → dynamic Function(S)

Notifies the BloC of a new state which triggers onData.

no setter, inherited

document ↔ D

The document is used to hydrate the bloc calculator state.

getter/setter pair

enableForceBuildEvents → bool

Enable force build events, if you want to force the rendering of the bloc builder. Indicates if the event-state history should be saved.

final, inherited

errorController → PublishSubject<BlocError>

The error controller.

final, inherited

eventStateHistory → Map<E, List<String>>

The history map that stores the event-state history.

final, inherited

eventStateHistorySize → int

The maximum size of the history. Set it to null to disable the limit.

final, inherited

eventSubscriptions ↔ StreamSubscription<S>

The event subscriptions.

getter/setter pair, inherited

externalEventController → PublishSubject<E>

The external event controller which is used to control the event stream.

final, inherited

getContext → (BuildContext? Function()?)

final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

initialState → S?

The initial state of the BloC.

final, inherited

initialStateBuilder → BlocStateBuilder<S>?

The initial state BloC builder.

final, inherited

internalEventController → PublishSubject<BlocEvent>

The internal event controller which is used to control the event stream.

final, inherited

isAutoRefreshEnabled ↔ bool

getter/setter pair, inherited

isClosed → bool

Whether the BloC is closed for dispatching more events.

no setter, inherited

isInitialized ↔ bool

Whether the BloC is initializing.

getter/setter pair, inherited

isInitializing ↔ bool

Whether the BloC is initializing.

getter/setter pair, inherited

onAnalyticsEvents → Stream<BlocAnalyticsEvent>

no setter, inherited

onData → Stream<S>

Called whenever the BloC's state is updated.

no setter, inherited

onError → Stream<BlocError>

Called whenever the BloC's state is updated.

no setter, inherited

onEvent → Stream<E>

Called whenever an event is added to the BloC.

no setter, inherited

publishers → List<PublishSubject>

The list of publishers.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

stateController → BehaviorSubject<S>

The state controller.

final, inherited

subxList → SubxList

final, inherited

subxMap → SubxMap

final, inherited

Methods

addComputeEvent() → void

inherited

canClose() → bool

Whether the BloC can be closed. Override this method to prevent the BloC from closing.

inherited

canSaveUserEntry() → Future<bool>

Determines if the user entry can be saved.

clearCalculatorDocument({bool force = false}) → Future<void>

Clears the calculator document.

clearCalculatorState() → Future<S>

Clears the calculator state by clearing the calculator document.

override

close() → void

Closes the bloc by disconnecting from the data provider.

override

compute() → Future<R>

Performs the calculation and returns the result.

inherited

debounce(BlocDebounceCallback<BlocEvent> function, {Duration delay = const Duration(milliseconds: 300)}) → BlocDebounceCallback<BlocEvent>

Creates a debounced function that only invokes function after a delay.

inherited

debounceEvent(BlocEventCallback<E> function, {Duration delay = const Duration(milliseconds: 300)}) → BlocEventCallback<E>

Debounces an event. The function will not be invoked until delay.

inherited

exportToCsv(BuildContext context) → Future<void>

Exports the calculator state to CSV. Throws an exception if the exportToCsv function is not implemented.

inherited

exportToExcel(BuildContext context) → Future<void>

Export the calculator state to an Excel file. Throws an exception if the exportToExcel function is not implemented.

inherited

exportToPdf(BuildContext context) → Future<void>

Exports the calculator state to PDF.

inherited

getEventForState(S state) → E?

Returns the event related to the given state.

inherited

getInitialState() → S

Tries to retreive the initial BloC's state.

inherited

handleAutoRefreshComputations(dynamic event) → void

inherited

handleComputedEvent(FastCalculatorBlocEventPayload<FastCalculatorResults>? payload) → Stream<S>

Handles the computed event by updating the state with the computed results.

inherited

handleComputeError(dynamic error) → Future<void>

Handles errors that occur during computation.

inherited

handleComputeEvent() → Stream<S>

Handles the compute event by updating the state flags and performing the calculation.

inherited

handleInitEvent() → Stream<S>

Handles the initialization event by initializing the calculator and emitting the new state.

inherited

handleInitializedEvent() → Stream<S>

Handles the initialized event by updating the isInitialized and isInitializing flags.

inherited

handleInitializeFailedEvent(FastCalculatorBlocEventPayload<R>? payload) → Stream<S>

Handles an event where the calculator fails to initialize by resetting the isInitialized and isInitializing flags and emitting a new state.

inherited

handleInternalError(dynamic error, StackTrace stackTrace) → void

Handles internal errors that occur within the bloc.

inherited

handleLoadMetadataEvent() → Stream<S>

Handles the load metadata event by loading the calculator metadata. Emits the new state.

inherited

handlePatchMetadataEvent(FastCalculatorBlocEventPayload<FastCalculatorResults>? payload) → Stream<S>

inherited

handlePatchValueEvent(covariant FastCalculatorBlocEventPayload<FastCalculatorResults>? payload) → Stream<S>

Handles the patch value event by updating the calculator state and document with the given payload.

override

handleResetEvent() → Stream<S>

Handles the reset event by setting the isInitialized and isInitializing flags to false.

inherited

handleSettingsChanges(FastAppSettingsBlocState state) → void

Handles settings changes.

override

initialize() → Future<void>

Initializes the bloc by connecting to the data provider and retrieving the default and saved calculator documents.

override

initializeCalculatorState() → Future<S>

Initializes the calculator state with the calculator document.

override

initializeDefaultCalculatorState() → Future<S>

Initializes the default calculator state.

inherited

initState() → S

Optional callback method to initialize the BloC's state.

inherited

isCalculatorStateDirty() → Future<bool>

Checks if the calculator state is dirty, i.e., different from the default state.

inherited

isCalculatorStateValid() → Future<bool>

Checks if the calculator state is valid.

inherited

loadMetadata() → Future<Map<String, dynamic>>

Loads the metadata of the calculator.

inherited

mapEventToState(FastCalculatorBlocEvent<FastCalculatorResults> event) → Stream<S>

Maps the events to the corresponding state changes in the bloc.

override

mergeMetadata(Map<String, dynamic> partialMetadata) → Map<String, dynamic>

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

patchCalculatorDocument(String key, dynamic value) → Future<D?>

Patches the calculator document with the given key and value.

patchCalculatorState(String key, dynamic value) → Future<S?>

Updates a single field in the calculator state.

inherited

performCancellableAsyncOperation<T>(Future<T> opreation) → Future<T?>

Performs an asynchronous operation and cancels it if the BloC is closed.

inherited

persistCalculatorDocument({bool force = false}) → Future<void>

Persists the calculator document.

processCalculatorValueChange(S? state) → Stream<S>

inherited

resetBloc() → void

inherited

resetCalculatorDocument(String key) → Future<D?>

Resets the calculator document with the given key.

resetCalculatorState(String key) → Future<S?>

inherited

retrieveCalculatorDocument() → Future<D>

Retrieves the calculator document by merging the saved document with the default calculator document.

retrieveCalculatorStateStatus() → Future<(bool, bool)>

Retrieves the current status of the calculator state, including validity and dirtiness.

inherited

retrieveDefaultCalculatorDocument() → Future<D>

Retrieves the default calculator document.

retrieveDefaultResult() → Future<R>

Retrieves the default result.

inherited

sampleEvent(BlocEventCallback<E> function, {Duration delay = const Duration(milliseconds: 300)}) → BlocEventCallback<E>

inherited

saveCalculatorState() → Future<bool>

Saves the calculator state by persisting the calculator document.

override

setState(S nextState) → void

Set the BloC state.

inherited

shareCalculatorState(BuildContext context) → Future<void>

Shares the calculator state.

inherited

shouldProcessEventInOrder() → bool

Determines if events should be processed in order.

inherited

throttle(BlocThrottleCallback<BlocEvent> function, {Duration duration = const Duration(milliseconds: 300)}) → BlocThrottleCallback<BlocEvent>

Creates a throttled function that only invokes function at most once per every duration.

inherited

throttleEvent(BlocEventCallback<E> function, {Duration duration = const Duration(milliseconds: 300)}) → BlocEventCallback<E>

Throttles an event. The event will be ignored if it is dispatched within the specified duration. The last event will be dispatched after the duration has passed.

inherited

toString() → String

A string representation of this object.

inherited

transformError(dynamic error, StackTrace stackTrace) → BlocError?

Transforms the error before it is emitted.

inherited

updateEventStateHistory(E event, S nextState) → void

Updates the event-state history. The event-state history is used to determine the event related to a given state.

inherited

willCompute() → Stream<S>

The initializer to yield the current state before computation begins.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited