HistorizedValuable<T> class
abstract
Contract class for Valuable that can maintain an history
This class provide an history accessor, to iterate through the values history. As it's a Queue, the last element represents the current value, and the first element is the first value the Valuable ever was.
Good to known, a value is put in history only when this value is read from the Valuable, and is different of the previous value in history (== is used for comparison). Only exception to this rule, is StatefulValuable that put the value in history as early as the StatefulValuable.setValue happens too
- Implemented types
-
- Valuable<
T>
- Valuable<
- Implementers
- Available extensions
Constructors
-
HistorizedValuable(Valuable<
T> valuable) -
factory
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
-
history
→ UnmodifiableQueueView<
ValuableHistoryNode< T> > -
History of this Valuable
no setter
- isMounted → bool
-
Returns if this object is still mounted
no setterinherited
- 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
inherited
-
equals(
dynamic other) → Valuable< bool> -
Compare with a value that type is
Output
or another Valuableinherited -
getValue(
[ValuableContext? context = const ValuableContext()]) → T -
Get the current value of the Valuable
inherited
-
getValueDefinition(
bool reevaluatingNeeded, [ValuableContext? context = const ValuableContext()]) → T -
This method should be redefined in ever sub-classes to determine how works
the method getValue
inherited
-
historize(
) → HistorizedValuable< T> -
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(T)) → Valuable< Other> -
A method to map a Valuable from
Output
toOther
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 Valuableinherited -
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 Valuableinherited -
operator <=(
dynamic other) → Valuable< bool> -
Compare with a value that type is
Output
or another Valuableinherited -
operator ==(
Object other) → bool -
The equality operator.
inherited
-
operator >(
dynamic other) → Valuable< bool> -
Compare with a value that type is
Output
or another Valuableinherited -
operator >=(
dynamic other) → Valuable< bool> -
Compare with a value that type is
Output
or another Valuableinherited