WidgetSelector class

WidgetSelectoris a convenience class that will return one of two Widgets based on the output of a Stream<bool> This is pretty handy if you want to react to state change like enable/disable in you ViewModel and update the View accordingly. If you don't need builders for the alternative child widgets this class offers a more concise expression than WidgetBuilderSelector

Inheritance

Constructors

WidgetSelector({Key? key, required Stream<bool> buildEvents, Widget? onTrue, Widget? onFalse, ErrorBuilder<String>? errorBuilder, PlaceHolderBuilder? placeHolderBuilder, bool? initialValue})
Creates a new WidgetSelector instance stream : Stream<bool>that signals that the this Widget should be updated onTrue : Widget that should be returned if an item with value true is received onFalse: Widget that should be returned if an item with value false is received
const

Properties

errorBuilder → ErrorBuilder<String>?
final
hashCode → int
The hash code for this object.
no setterinherited
initialData → bool?
finalinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onFalse → Widget?
final
onTrue → Widget?
final
placeHolderBuilder → PlaceHolderBuilder?
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stream → Stream<bool>
finalinherited

Methods

build(BuildContext context, bool data) → Widget
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → _ReactiveBaseWidgetState<bool>
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
errorBuild(BuildContext context, Object error) → Widget
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
placeHolderBuild(BuildContext context) → Widget
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