Context<TState> class
A ChangeNotifier that owns the global state of the application.
It relies on a seroes of middlewares to process events and to eventually produce new states.
The only way to alter the state is by dispatching actions.
See also :
ApplicationAction
which updates the state of the application.
- Inheritance
-
- Object
- ChangeNotifier
- Context
- Implementers
Constructors
-
Context({required TState initialState, required List<
Middleware< middlewares, List<TState> >Service> services = const <Service>[]})
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
-
middlewares
→ List<
Middleware< TState> > -
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- services → ServiceLocator
-
latefinal
- state ↔ TState
-
getter/setter pair
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
dispatch(
Event event) → Future< void> -
dispose(
) → void -
Discards any resources used by the object. After this is called, the
object is not in a usable state and should be discarded (calls to
addListener will throw after the object is disposed).
override
-
listen<
T> (T selector(TState state)) → Stream< T> -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
until<
T> (bool predicate(TState state)) → Future< bool>
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
of<
TState> (BuildContext context) → Context< TState>