WidgetBuilderSelector class

WidgetBuilderSelectoris a convenience class that will one of two builder methods 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. In comparrison to WidgetSelector this is best used if the alternative child widgets are large so that you don't want to have them created without using them.

Constructors

WidgetBuilderSelector({Stream<bool> buildEvents, WidgetBuilder onTrue, WidgetBuilder onFalse, Key key })
Creates a new WidgetBuilderSelector instance buildEvents : Stream<bool>that signals that the this Widget should be updated onTrue : builder that should be executed if an item with value true is received onFalse: builder that should be executed if an item with value true is received
const

Properties

buildEvents → Stream<bool>
final
onFalse → WidgetBuilder
final
onTrue → WidgetBuilder
final
hashCode → int
The hash code for this object. [...]
read-only, inherited
key → Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget. [...]
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree. [...]
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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 toStringDeep. [...]
inherited
toString({DiagnosticLevel minLevel: DiagnosticLevel.debug }) → String
Returns 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 ==(dynamic other) → bool
The equality operator. [...]
inherited