PrefNotifier<T> class
- Inheritance
-
- Object
- ChangeNotifier
- PrefItem<
T> - PrefNotifier
Constructors
- PrefNotifier(String key, {T initFunc()?, dynamic checkValue})
Properties
-
checkValue
→ CheckValueFunc<
T?> ? -
An optional callback that will be called before changing the value or saving a new value to the storage.
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
-
initialized
→ Future<
PrefItem< T> > -
Future completes when the object initialization completes. That means we have read value or NULL from the storage.
no setterinherited
-
initializedValue
→ Future<
T?> -
Allows to wait when for the first value being asynchronously read after object creation.
no setterinherited
- isDisposed → bool
-
Returns
trueafter dispose was called.no setterinherited - isInitialized → bool
-
no setterinherited
- key → String
-
The current item key (or name, or id - depending on the storage).
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- storage → PrefsStorage
-
The parent storage containing the current item.
finalinherited
- value ↔ T?
-
The current value stored in this notifier.
getter/setter pairinherited
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
adjust(
AdjustFunc f) → Future< T?> -
Reads an existing value, computes a new one with AdjustFunc and writes the new value to the storage.
inherited
-
defined(
) → Future< bool> -
Returns TRUE if we have the value in storage, otherwise FALSE.
inherited
-
dispose(
) → void -
Discards any resources used by the object. After this is called, the
object is not in a usable state and should be discarded (calls to
addListener will throw after the object is disposed).
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
read(
) → Future< T?> -
Reads and returns the data from storage. value property will also be updated.
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
-
toWaitList(
List< Future> list) → void -
inherited
-
write(
T? value) → Future< void> -
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- commonStorage → SharedPrefsStorage
-
no setter