FutureValuable<Output, Res> class

A Valuable that depends on a Future

This object provides a function for each state of the future, to have a value that depends on it

  • dataValue that process to return an Output value depends on the Res complete response of the future
  • noDataValue will return an Output value while the future is still incomplete
  • errorValue will return an Output when the future complete on error
Inheritance
Available Extensions

Constructors

FutureValuable(Valuable<Future<Res>> future, {required ValuableGetFutureResult<Output, Res> dataValue, required ValuableGetFutureLoading<Output> noDataValue, required ValuableGetFutureError<Output> errorValue, bool evaluateWithContext = false})
Constructor to provide each functions
FutureValuable.values(Valuable<Future<Res>> future, {required Output noDataValue, required Output errorValue})
Constructor to simply map result value as Valuable value

Properties

dataValue → ValuableGetFutureResult<Output, Res>
A function to return a value when the future is complete normally
final
errorValue → ValuableGetFutureError<Output>
A function to return a value when the future is complete on error
final
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
isMounted → bool
Returns if this object is still mounted
no setterinherited
noDataValue → ValuableGetFutureLoading<Output>
A function to return a value when the future is still incomplete
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
valuableContext → ValuableContext?
no setterinherited
valueCache → _ValueCache
finalinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
cleanWatched() → void
inherited
dispose() → void
Should be called to clean all links to other Valuables, and all the rest
override
equals(dynamic other) → Valuable<bool>
Compare with a value that type is Output or another Valuable
inherited
getValue([ValuableContext? context = const ValuableContext()]) → Output
Get the current value of the Valuable
inherited
getValueDefinition(bool reevaluatingNeeded, [ValuableContext? context = const ValuableContext()]) → Output
This method should be redefined in ever sub-classes to determine how works the method getValue
override
historize() → HistorizedValuable<Output>
Build an HistorizedValuable based on this Valuable
inherited
listenDispose(VoidCallback onDispose) → void
Allows to be notified when this Valuable is disposed
inherited
map<Other>(Other toElement(Output)) → Valuable<Other>
A method to map a Valuable from Output to Other
inherited
markToReevaluate() → void
Mark the valuable to be reevaluated
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notEquals(dynamic other) → Valuable<bool>
Compare with a value that type is Output or another Valuable
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
onValuableChange() → void
Called when a Valuable notify a change.
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
unwatch(Valuable valuable) → void
Remove listener on the valuable, that may change scope, or that about to be disposed Internal purpose
inherited
watch<T>(Valuable<T> valuable, {ValuableContext? valuableContext, ValuableWatcherSelector<T>? selector}) → T
Watch a valuable, that eventually change
inherited

Operators

operator <(dynamic other) → Valuable<bool>
Compare with a value that type is Output or another Valuable
inherited
operator <=(dynamic other) → Valuable<bool>
Compare with a value that type is Output or another Valuable
inherited
operator ==(Object other) → bool
The equality operator.
inherited
operator >(dynamic other) → Valuable<bool>
Compare with a value that type is Output or another Valuable
inherited
operator >=(dynamic other) → Valuable<bool>
Compare with a value that type is Output or another Valuable
inherited

Static Methods

asyncVal<Res>(Valuable<Future<Res>> future) → FutureValuableAsyncValue<Res>
Pseudo constructor to map directly a Res value to an AsyncValue<Res>