Injected<T> class
abstract
A Wrapper class that encloses the state of the model we want to Inject. The state can be mutable or immutable and can also be global or local.
Injected model can be instantiated globally or as a member of classes. They can be instantiated inside the build method without losing the state after rebuilds.
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Injected instantiation: To instantiate an Injected model, you use RM.inject, RM.injectFuture, RM.injectStream or RM.injectFlavor.
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Injected lifecycle: The state wrapped by the Injected model has a lifecycle. It is created when first used and destroyed when no longer used even if it is declared globally. Between the creation and the destruction of the state, it can be listened to and mutated to notify its registered listeners.
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Injected state and null safety: The state of an injected model is null safe, that is it can not be null. For this reason the initial state will be inferred by the library, and in case it is not, it must be defined explicitly. The initial state of primitives is inferred as follows: (int: 0, double, 0.0, String:'', and bool: false). For other non-primitive objects the initial state will be the first created instance.
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Listening to an Injected: To listen to an Injected model you can use one of the following options:
ReactiveModelBuilder.listen,ReactiveModelBuilder.futureBuilder,ReactiveModelBuilder.streamBuilder,ReactiveModelBuilder.rebuilder,ReactiveModelBuilder.whenRebuilder, andReactiveModelBuilder.whenRebuilderOr. -
Injected state mutation: To mutate the state and notify listeners, you use ReactiveModel.state setter, ReactiveModel.setState, or
ReactiveModel.toggleif the state is bool. You can also notify listeners without changing the state using ReactiveModel.notify. You can also refresh the state to its initial state and reinvoke the creation function then notify listeners using ReactiveModel.refresh. -
Injected state cleaning: When the state is disposed of, its list of listeners is cleared, and if the state is waiting for a Future or subscribed to a Stream, it will cancel them to free resources.
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State persistence: Injected state can be persisted using PersistState. By default the state is persisted each time the state is mutated. You can set it to persist manually or when the state is disposed. You can also throttle state persistence for the time you want.
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Undo redo state mutation: You can undo or redo state mutation by defining the
undoStackLengthparameter of RM.inject RM.injectFuture, RM.injectStream or RM.injectFlavor. After state mutation you can redo it usingReactiveModelUndoRedoState.undoStateand redo it usingReactiveModelUndoRedoState.redoState. -
Injected model dependence Injected models can depend on other Injected models and recalculate its state and notify its listeners whenever any of its of the Inject model that it depends on emits a notification.
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Injected mock for testing: Injected model can be easily mocked to fake implementation in tests using : Injected.injectMock, Injected.injectFutureMock, or Injected.injectStreamMock.
- Inheritance
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- Object
- ReactiveModel<
T> - Injected
- Implementers
- Available extensions
Constructors
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Injected({required T creator(), T? initialState, SideEffects<
T> ? sideEffects, StateInterceptor<T> ? stateInterceptor, bool autoDisposeWhenNotUsed = true, String? debugPrintWhenNotifiedPreMessage, Object? toDebugString(T?)?, int undoStackLength = 0, PersistState<T> persist()?, DependsOn<T> ? dependsOn}) -
A Wrapper class that encloses the state of the model we want to Inject. The
state can be mutable or immutable and can also be global or local.
factory
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Injected.future({required Future<
T> creator(), T? initialState, SideEffects<T> ? sideEffects, StateInterceptor<T> ? stateInterceptor, bool autoDisposeWhenNotUsed = true, String? debugPrintWhenNotifiedPreMessage, Object? toDebugString(T?)?, int undoStackLength = 0, PersistState<T> persist()?, DependsOn<T> ? dependsOn, bool isLazy = false}) -
Create an Injected state from future
factory
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Injected.generic({required Object? creator(), required T? initialState, required SideEffects<
T> ? sideEffects, required StateInterceptor<T> ? stateInterceptor, required bool autoDisposeWhenNotUsed, required String? debugPrintWhenNotifiedPreMessage, required Object? toDebugString(T?)?, required int undoStackLength, required PersistState<T> persist()?, required DependsOn<T> ? dependsOn, Object? watch(T? s)?}) -
Create an Injected state from any kind of creator
factory
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Injected.stream({required Stream<
T> creator(), T? initialState, SideEffects<T> ? sideEffects, StateInterceptor<T> ? stateInterceptor, bool autoDisposeWhenNotUsed = true, String? debugPrintWhenNotifiedPreMessage, Object? toDebugString(T?)?, int undoStackLength = 0, PersistState<T> persist()?, DependsOn<T> ? dependsOn, Object? watch(T? s)?}) -
Create an Injected state from stream
factory
Properties
- canRedoState → bool
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Whether the state can be redone.
no setter
- canUndoState → bool
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Whether the state can be done
no setter
- connectionState → ConnectionState
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no setterinherited
- customStatus ↔ Object?
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Custom status of the state. Set manually to mark the state with a particular
tag to be used in your logic.
getter/setter pairinherited
- error → dynamic
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The error
no setterinherited
- hasData → bool
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The state is mutated successfully.
no setterinherited
- hasError → bool
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The stats has error
no setterinherited
- hashCode → int
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The hash code for this object.
no setterinherited
- hasObservers → bool
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Whether the state has listeners or not
no setterinherited
- isDone → bool
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The state is mutated using a stream and the stream is done.
no setterinherited
- isIdle → bool
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The state is initialized and never mutated.
no setterinherited
- isStateInitialized → bool
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no setterinherited
- isWaiting → bool
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The state is waiting for and asynchronous task to end.
no setterinherited
- runtimeType → Type
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A representation of the runtime type of the object.
no setterinherited
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snapState
→ SnapState<
T> -
A snap representation of the state
no setterinherited
- state ↔ T
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The current state
getter/setter pairinherited
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stateAsync
↔ Future<
T> -
The current Async state
getter/setter pairinherited
- subscription ↔ StreamSubscription?
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It is not null if the state is waiting for a Future or is subscribed to a
Stream
getter/setter pairinherited
Methods
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addCleaner(
VoidCallback listener) → VoidCallback -
Add a callback to be executed when the state is disposed of.
inherited
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addObserver(
{required ObserveReactiveModel listener, bool shouldAutoClean = false, bool isSideEffects = true}) → VoidCallback -
Add observer to this state.
inherited
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call(
BuildContext context, {bool defaultToGlobal = false}) → Injected< T> - Obtain the Injected model from the nearest InheritedWidget inserted using inherited.
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cleanState(
) → void -
Clean the state
inherited
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clearUndoStack(
) → void - Clear undoStack;
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deletePersistState(
) → void - Delete the state form the persistence store
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dispose(
) → void -
Dispose the state
inherited
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disposeIfNotUsed(
) → void -
Dispose the state if it has no listener
inherited
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inherited(
{Key? key, required Widget builder(BuildContext), required FutureOr< T> stateOverride()?, bool connectWithGlobal = true, SideEffects<T> ? sideEffects, String? debugPrintWhenNotifiedPreMessage, String toDebugString(T?)?}) → Widget - Provide the injected model using an InheritedWidget that wraps its state.
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initializeState(
) → FutureOr< T?> -
Initialize the state
inherited
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injectFutureMock(
Future< T> fakeCreator()) → void - Inject a fake future implementation of this injected model.
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injectMock(
T fakeCreator()) → void - Inject a fake implementation of this injected model.
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injectStreamMock(
Stream< T> fakeCreator()) → void - Inject a fake stream implementation of this injected model.
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noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
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notify(
) → void -
Notify observers
inherited
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of(
BuildContext context, {bool defaultToGlobal = false}) → T - Obtain the state from the nearest InheritedWidget inserted using inherited.
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onAll<
R> ({R onIdle()?, required R onWaiting()?, required R onError(dynamic error, VoidCallback refreshError)?, required R onData(T data)}) → R -
Listen to the injected Model and rebuild when it emits a notification.
inherited
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onOrElse<
R> ({R onIdle()?, R onWaiting()?, R onError(dynamic error, VoidCallback refreshError)?, R onData(T data)?, required R orElse(T data)}) → R -
Listen to the injected Model and rebuild when it emits a notification.
inherited
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persistState(
) → void - Persist the state
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redoState(
) → void - Redo to the next valid state (isWaiting and hasError are ignored)
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refresh(
) → Future< T?> -
Refresh the Injected state. Refreshing the state means reinitialize
it and reinvoke its creation function and notify its listeners.
inherited
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reInherited(
{Key? key, required BuildContext context, required Widget builder(BuildContext)}) → Widget - Provide the Injected model to another widget tree branch.
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setState(
Object? mutator(T s), {SideEffects< T> ? sideEffects, StateInterceptor<T> ? stateInterceptor, bool shouldOverrideDefaultSideEffects(SnapState<T> snap)?, int debounceDelay = 0, int throttleDelay = 0}) → Future<T?> -
Mutate the state of the model and notify observers.
inherited
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setToHasData(
dynamic data) → void -
Set the state to the data status
inherited
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setToHasError(
dynamic error, {StackTrace? stackTrace, VoidCallback? refresher}) → void -
Set the state to the error status
inherited
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setToIsIdle(
) → void -
Set the state to the idle status
inherited
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setToIsWaiting(
) → void -
Set the state to the waiting status
inherited
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toString(
) → String -
A string representation of this object.
inherited
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undoState(
) → void - Undo to the last valid state (isWaiting and hasError are ignored)
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whenConnectionState<
R> ({R onIdle()?, required R onWaiting()?, required R onError(dynamic error)?, required R onData(T data)}) → R -
inherited
Operators
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operator ==(
Object other) → bool -
The equality operator.
inherited