Reactive<T> class
Reactive is a simple wrapper around a value to make it listenable for changes. This lets you make any value listenable, instead of having to extend Model or ChangeNotifier.
Reactive extends Model, meaning it is listenable. It also exposes a getter and a setter for the wrapped value. By setting a new value, notifyListeners is also called for you. This makes it possible to listen for changes and reactively rerender content.
Example:
final user = Reactive(User(name: 'John'));
user.addListener(() { print('updated'); });
print(user.value); // prints John
user.value = 'Mary'; // prints 'updated'
print(user.value); // prints Mary
- Inheritance
-
- Object
- Listenable
- Model
- Reactive
Constructors
- Reactive(T e)
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- listenerCount → int
-
Returns the number of listeners listening to this model.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value ↔ T
-
Gets the current value
getter/setter pair
Methods
-
addListener(
VoidCallback listener) → void -
listenerwill be invoked when the model changes.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Should be called only by Model when the model has changed.
inherited
-
removeListener(
VoidCallback listener) → void -
listenerwill no longer be invoked when the model changes.inherited -
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited