Signal<T> class

A base-class that store a value of T and notify the listeners when the value is updated.

You can create a new Signal:

// usign the `Signal` class
final strSignal = Signal<String>("initial value");
final intSignal = Signal<int>(0);
final userSignal = Signal<User>(User());

You can get the value:

// usign a `value` getter
print(strSignal.value);
// or using the callable
print(strSignal());
// or using `toString` implicit
print("$intSignal");

You can set a new value:

// usign a `value` setter
strSignal.value = "change value";
// or using the callable
strSignal("change value");

You can use Lifecycle.willUpdate event for before the value is changed, or use Lifecicle.didUpdate event for after the value is changed:

Reactter.on(
  strSignal,
  Lifecycle.willUpdate,
  (signal, _) => print("Previous value: $signal"),
);

Reactter.on(
  strSignal,
  Lifecycle.didUpdate,
  (signal, _) => print("Current value: $signal"),
);

Use update method to notify changes after run a set of instructions:

userSignal.update((user) {
  user.firstname = "Leo";
  user.lastname = "Leon";
});

Use refresh method to force to notify changes.

userSignal.refresh();

If you use flutter, add flutter_reactter package on your dependencies and use its Widgets.

Constructors

Signal(T value): A base-class that store a value of T and notify the listeners when the value is updated.

Properties

eventManager → EventManager: no setterinherited
hashCode → int: The hash code for this object.
no setterinherited
instanceBinded → Object?: The reference instance to the current state.
no setterinherited
instanceManager → InstanceManager: no setterinherited
isDisposed → bool: Returns true if the state has been disposed.
no setterinherited
logger → Logger: no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
stateManager → StateManager<StateBase>: no setterinherited
value ↔ T: Returns the value of the signal.
getter/setter pairoverride

Methods

bind(Object instance) → void: Stores a reference to an object instance
inherited
call([T? val]) → T: Gets and/or sets to value like a function This method doesn't allow setting its value to null. If you need to set null as value, use .value = null.
override
dispose() → void: Called when this object is removed
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
refresh() → void: It's used to notify listeners that the state has been updated. It is typically called after making changes to the state object.
inherited
toString() → String: A string representation of this object.
inherited
unbind() → void: Removes the reference to the object instance
inherited
update(covariant void fnUpdate(T value)) → void: Executes fnUpdate, and notify the listeners about to update.

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Signal<T> class

Constructors

Properties

Methods

Operators

reactter library