PagedValueNotifier<Key, Value> class
abstract
A PagedValueNotifier that uses a PagedListenable
to load data.
This class is useful when you need to load data from a server
using a PagedListenable
and want to keep the UI-driven refresh
signals in the PagedListenable
.
PagedValueNotifier is a ValueNotifier that emits a PagedValue whenever the data is loaded or an error occurs.
- Inheritance
-
- Object
- ChangeNotifier
- ValueNotifier<
PagedValue< Key, Value> > - PagedValueNotifier
- Implementers
Constructors
-
PagedValueNotifier(PagedValue<
Key, Value> _initialValue) - Creates a PagedValueNotifier
Properties
-
currentItems
→ List<
Value> -
Returns the currently loaded items
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
value
↔ PagedValue<
Key, Value> -
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
-
appendLastPage(
List< Value> newItems) → void -
Appends
newItems
to the previously loaded ones and sets the next page key tonull
. -
appendPage(
{required List< Value> newItems, required Key nextPageKey}) → void -
Appends
newItems
to the previously loaded ones and replaces the next page's key. -
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
-
doInitialLoad(
) → Future< void> - Load initial data from the server.
-
loadMore(
Key nextPageKey) → Future< void> -
Load more data from the server using
nextPageKey
. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
refresh(
{bool resetValue = true}) → Future< void> - Refresh the data presented by this PagedValueNotifier.
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
retry(
) → Future< void> - Retry any failed load requests.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited