Value<T> class

A value that can be listened to and has status tracking.

This class combines ListNotifier for listener management, StateMixin for status tracking, and ValueListenable for Flutter integration.

Inheritance
Implemented types
Mixed-in types
Implementers
Available extensions

Constructors

Value(T val)
Creates a new Value with the initial value.

Properties

hashCode → int
The hash code for this object.
no setterinherited
isDisposed → bool
no setterinherited
listenersLength → int
Returns the number of active listeners.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
state → T
Alias for value for convenience.
no setterinherited
status ↔ GetStatus<T>
The current status of the state.
getter/setter pairinherited
value ↔ T
The current value of the object.
getter/setter pairoverride

Methods

addListener(GetStateUpdate listener) → Disposer
Register a closure to be called when the object notifies its listeners.
inherited
addListenerId(Object? key, GetStateUpdate listener) → Disposer
Adds a listener to a specific group identified by key.
inherited
call([T? v]) → T?
change(GetStatus<T> status) → void
Changes the status if it's different from the current status.
inherited
containsId(Object id) → bool
Checks if a listener group with the given ID exists.
inherited
containsListener(GetStateUpdate listener) → bool
inherited
dispose() → void
Disposes all listener groups.
inherited
disposeId(Object id) → void
Disposes a specific listener group.
inherited
futurize(Future<T> body(), {T? initialData, String? errorMessage, bool useEmpty = true}) → void
Executes a future and automatically handles status changes.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyGroupChildrens(Object id) → void
Reports that a listener group was read.
inherited
obx(NotifierBuilder<T> widget, {Widget onError(String? error)?, Widget? onLoading, Widget? onEmpty, WidgetBuilder? onCustom}) → Widget

Available on StateMixin<T>, provided by the StateExt extension

Builds a widget based on the current status.
refresh() → void
Notifies all listeners to update.
inherited
refreshGroup(Object id) → void
Refreshes only the listeners in a specific group.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that the object notifies.
inherited
removeListenerId(Object id, VoidCallback listener) → void
Removes a listener from a specific group.
inherited
reportAdd(VoidCallback disposer) → void
Reports a disposer callback to the global notifier.
inherited
reportRead() → void
Reports that this notifier was read.
inherited
setEmpty() → void
Sets the status to empty.
inherited
setError(Object error) → void
Sets the status to error with the given error object.
inherited
setLoading() → void
Sets the status to loading.
inherited
setSuccess(T data) → void
Sets the status to success with the given data.
inherited
toJson() → Object?
Converts the value to JSON if possible.
toString() → String
A string representation of this object.
override
update(T fn(T? value)) → void
Updates the value using a function.

Operators

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