LAsyncView<T> class

A specialized view for asynchronous dependencies.

LAsyncView resolves a Future dependency and renders loading, error, or builder (success) states. The resolution logic is memoized to prevent infinite re-fetching.

Use args to forcefully re-trigger the resolution when arguments change.

Inheritance

Constructors

LAsyncView({Key? key, Future<T> resolver(BuildContext context)?, Widget builder(BuildContext context, T controller)?, bool autoWatch = true, Widget loading(BuildContext context)?, Widget error(BuildContext context, Object error)?, List<Object?>? args})
Creates an async view.
const
LAsyncView.put(Future<T> create(), {Key? key, String? tag, bool permanent = false, bool isFactory = false, required Widget builder(BuildContext context, T controller), bool autoWatch = true, Widget loading(BuildContext context)?, Widget error(BuildContext context, Object error)?, List<Object?>? args})
Registers an async dependency of type T and consumes it.
factory
LAsyncView.store(LevitAsyncStore<T> store, {Key? key, required Widget builder(BuildContext context, T controller), bool autoWatch = true, Widget loading(BuildContext context)?, Widget error(BuildContext context, Object error)?, List<Object?>? args})
Syntax sugar for consuming a LevitAsyncStore.
factory

Properties

args → List<Object?>?
Optional dependency keys for re-resolution.
final
autoWatch → bool
Whether to wrap the view in an LWatch.
final
builder → Widget Function(BuildContext context, T controller)?
Builds the widget tree using the resolved controller.
final
error → Widget Function(BuildContext context, Object error)?
Builder for the error state.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
loading → Widget Function(BuildContext context)?
Builder for the loading state.
final
resolver → Future<T> Function(BuildContext context)?
Resolves the dependency asynchronously from the context.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

buildError(BuildContext context, Object err) → Widget
buildLoading(BuildContext context) → Widget
buildView(BuildContext context, T controller) → Widget
Builds the view content for the given controller.
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<LAsyncView<T>>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited