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
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
@pragma("vm:entry-point"), inherited
toString() → String
Returns a string representation of this object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(dynamic other) → bool
The equality operator. [...]
inherited