WidgetBuilderSelector class
WidgetBuilderSelector
is 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, ErrorBuilder<String> errorBuilder, PlaceHolderBuilder placeHolderBuilder, Key key, bool initialValue }) -
Creates a new WidgetBuilderSelector instance
stream
:Stream<bool>
that signals that the this Widget should be updatedonTrue
: builder that should be executed if an item with value true is receivedonFalse
: builder that should be executed if an item with value false is receivedconst
Properties
-
errorBuilder
→ ErrorBuilder<
String> -
final
- onFalse → WidgetBuilder
-
final
- onTrue → WidgetBuilder
-
final
- placeHolderBuilder → PlaceHolderBuilder
-
final
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- initialData → bool
-
final, 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
-
stream
→ Stream<
bool> -
final, inherited
Methods
-
build(
BuildContext context, bool data) → Widget -
errorBuild(
BuildContext context, Object error) → Widget -
placeHolderBuild(
BuildContext context) → Widget -
createElement(
) → StatefulElement -
Creates a
StatefulElement
to manage this widget's location in the tree. [...]inherited -
createState(
) → _ReactiveWidgetState< 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. [...]@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 DiagnosticsNode.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