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

Constructors

WidgetSelector({Stream<bool> buildEvents, Widget onTrue, Widget onFalse, Key key })
Creates a new WidgetSelector instance buildEvents : 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 true is received
const

Properties

buildEvents → Stream<bool>
final
onFalse → Widget
final
onTrue → Widget
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