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
Implementers

Constructors

Context({required TState initialState, required List<Middleware<TState>> middlewares, List<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>