AsyncDataScope<T extends Object?> class final AsyncDataScope

Inheritance

Constructors

AsyncDataScope({Key? key, Object? tag, Object? scopeKey, Duration? scopeKeyTimeout, void onScopeKeyTimeout()?, Duration? initCancellationTimeout, void onInitCancellationTimeout()?, Duration? disposeScopeTimeout, void onDisposeScopeTimeout()?, Duration? waitForChildrenTimeout, void onWaitForChildrenTimeout()?, Duration? pauseAfterInitialization, void onMount(BuildContext context)?, required Stream<AsyncDataScopeInitState<Object, T>> initData(BuildContext context), void onUnmount(T? data)?, required FutureOr<void> disposeData(T data), Widget waitingBuilder(BuildContext context)?, required Widget progressBuilder(BuildContext context, Object? progress), required Widget builder(BuildContext context, T data), required Widget errorBuilder(BuildContext context, Object error, StackTrace stackTrace, Object? progress)})
Creates an asynchronous scope producing a value.
const

Properties

builder → Widget Function(BuildContext context, T data)
Built once the value is there, and receives it.
final
child → Widget
The widget below this widget in the tree.
finalinherited
disposeScopeTimeout → Duration?
How long to wait for the asynchronous teardown; null takes the default.
finalinherited
errorBuilder → Widget Function(BuildContext context, Object error, StackTrace stackTrace, Object? progress)
Built when the initialization failed.
final
hashCode → int
The hash code for this object.
no setterinherited
initCancellationTimeout → Duration?
How long the teardown waits for the initialization to be cancelled; null takes the default.
finalinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onDisposeScopeTimeout → void Function()?
Called when the wait for the asynchronous teardown expires.
finalinherited
onInitCancellationTimeout → void Function()?
Called when the wait for the cancellation expires.
finalinherited
onScopeKeyTimeout → void Function()?
Called when the wait for scopeKey expires.
finalinherited
onWaitForChildrenTimeout → void Function()?
Called when the wait for the child scopes expires.
finalinherited
pauseAfterInitialization → Duration?
Holds the ready branch back for this long after the initialization.
finalinherited
progressBuilder → Widget Function(BuildContext context, Object? progress)
Built while the initialization is running.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
scopeKey → Object?
Serializes this scope with the others that share the key.
finalinherited
scopeKeyTimeout → Duration?
How long to wait for scopeKey; null takes the default.
finalinherited
tag → Object?
Names this particular scope in the log.
finalinherited
waitForChildrenTimeout → Duration?
How long to wait for the child scopes; null takes the default.
finalinherited
waitingBuilder → Widget Function(BuildContext context)?
Built while waiting for a scopeKey and for the first event.
final

Methods

buildOnError(BuildContext context, Object error, StackTrace stackTrace, Object? progress) → Widget
Built when the initialization failed.
override
buildOnProgress(BuildContext context, Object? progress) → Widget
Built while the initialization is running.
override
buildOnReady(BuildContext context, T data) → Widget
Built once the value is there, and receives it.
override
buildOnWaiting(BuildContext context) → Widget?
Built while waiting for a scopeKey and for the first event.
override
createElement() → InheritedElement
Inflates this configuration to a concrete instance.
inherited
createScopeElement() → _AsyncDataScopeElement<AsyncDataScope<T>, T>
Creates the element of this scope.
inherited
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
disposeData(T data) → FutureOr<void>
Releases the value initData produced; awaited.
override
initData(BuildContext context) → Stream<AsyncDataScopeInitState<Object, T>>
The initialization, ending with the value.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onMount(BuildContext context) → void
Called when the scope is mounted, before the initialization starts.
override
onUnmount(T? data) → void
Called synchronously when the scope leaves the tree, and on the way out of a close().
override
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({bool showHashCode = false}) → String
A short, textual description of this widget.
inherited
updateShouldNotify(covariant ScopeWidgetCore<AsyncDataScope<T>, _AsyncDataScopeElement<AsyncDataScope<T>, T>> oldWidget) → bool
Whether the framework should notify widgets that inherit from this widget.
inherited

Operators

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

Static Methods

maybeOf<T extends Object?>(BuildContext context, {required bool listen}) → AsyncDataScopeContext<AsyncDataScope<T>, T>?
The nearest AsyncDataScope<T> above context, or null.
override
of<T extends Object?>(BuildContext context, {required bool listen}) → AsyncDataScopeContext<AsyncDataScope<T>, T>
The nearest AsyncDataScope<T> above context.
override
select<T extends Object?, V extends Object?>(BuildContext context, V selector(AsyncDataScopeContext<AsyncDataScope<T>, T> context)) → V
Subscribes to one value of the scope and returns it.
override