Bloc<S> class
abstract
The central class behind this library
It is responsible for processing all the events and broadcasting corresponding
changes made to the state.
R is the type which subclasses Bloc
S is the type of value which this bloc broadcasts. S must implement equality
- Implementers
Constructors
- Bloc({S? initialState, BlocMonitor monitor = const BlocEventsPrinter()})
-
initialStateis the state which is set at initialization. if its null, the initial state is set to busy.
Properties
- error → StateError
-
no setter
- hasError → bool
-
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- isBusy → bool
-
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- state → S
-
no setter
-
stream
→ Stream<
S?> -
Broadcast Stream to which all builders listen
no setter
Methods
-
dispose(
) → Future< void> - Send a done event and disposes the stream
-
nextState(
S? currentState, S update) → S? - Called to calculate the new state
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
refresh(
) → void - Broadcasts the same state
-
setBusy(
{String? event}) → void - Called by blocs (subclasses) when the updated state isn't available immediately
-
setError(
StateError error, {String? event}) → void - Called by blocs (subclasses) when an error occurs
-
setState(
S update, {String? event}) → void - Called by blocs (subclasses) when the state is updated
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- checkIfValueType ↔ bool
-
getter/setter pair