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

• StreamChannelListController
• StreamMemberListController
• StreamMessageSearchListController
• StreamUserListController

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 setter, inherited

hasListeners → bool

Whether any listeners are currently registered.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value ↔ PagedValue<Key, Value>

The current value stored in this notifier.

getter/setter pair, inherited

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 to null.

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