FieldBuilder<T> class

Extended FieldStreamBuilder providing data check above AsyncSnapshot and calling corresponding build function.

Inheritance

Constructors

FieldBuilder({Key? key, required FieldControl<T> control, required ControlWidgetBuilder<T?> builder, WidgetBuilder? noData, bool nullOk = false})
Stream based Widget builder. Listening FieldControlStream.stream about changes. control - required Stream controller. FieldControl or FieldControlSub. builder - required Widget builder. Non 'null' T value is passed directly. noData - Widget to show, when value is 'null'. nullOk - Determine where to handle 'null' values. 'true' - 'null' will be passed to builder.

Properties

builder → AsyncWidgetBuilder<T?>
The build strategy currently used by this builder.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
initialData → T?
The data that will be used to create the initial snapshot.
finalinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stream → Stream<T?>?
The asynchronous computation to which this builder is currently connected, possibly null. When changed, the current summary is updated using afterDisconnected, if the previous stream was not null, followed by afterConnected, if the new stream is not null.
finalinherited

Methods

afterConnected(AsyncSnapshot<T?> current) → AsyncSnapshot<T?>
Returns an updated version of the current summary reflecting that we are now connected to a stream.
inherited
afterData(AsyncSnapshot<T?> current, T? data) → AsyncSnapshot<T?>
Returns an updated version of the current summary following a data event.
inherited
afterDisconnected(AsyncSnapshot<T?> current) → AsyncSnapshot<T?>
Returns an updated version of the current summary reflecting that we are no longer connected to a stream.
inherited
afterDone(AsyncSnapshot<T?> current) → AsyncSnapshot<T?>
Returns an updated version of the current summary following stream termination.
inherited
afterError(AsyncSnapshot<T?> current, Object error, StackTrace stackTrace) → AsyncSnapshot<T?>
Returns an updated version of the current summary following an error with a stack trace.
inherited
build(BuildContext context, AsyncSnapshot<T?> currentSummary) → Widget
Returns a Widget based on the currentSummary.
inherited
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<StreamBuilderBase<T?, AsyncSnapshot<T?>>>
Creates the mutable state for this widget at a given location in the tree.
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
initial() → AsyncSnapshot<T?>
Returns the initial summary of stream interaction, typically representing the fact that no interaction has happened at all.
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}) → 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