JsonSetDefaultValueBuilder class

Builder that sets a value (or group of values) to the JsonWidgetRegistry. This doesn't actually have a widget and instead simply returns the child's built widget. See the fromDynamic for the format.

When used closely to the child the value is being set for, it's recommended to use the static reference to avoid the widget receiving the wrong value during build and rebuild cycles.

Inheritance

Constructors

JsonSetDefaultValueBuilder({dynamic values})
const

Properties

hashCode → int
The hash code for this object.
no setterinherited
numSupportedChildren → int
finalinherited
preferredSizeWidget → bool
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
values → dynamic
final

Methods

build({required ChildWidgetBuilder? childBuilder, required BuildContext context, required JsonWidgetData data}) → Widget
Builds the widget. If there are dynamic keys on the data object, and the widget is not a PreferredSizeWidget, then the returned widget will be wrapped by a stateful widget that will rebuild if any of the dynamic args change in value.
inherited
buildCustom({ChildWidgetBuilder? childBuilder, required BuildContext context, required JsonWidgetData data, Key? key}) → Widget
Custom builder that subclasses must override and implement to return the actual Widget to be placed on the tree.
override
getChild(JsonWidgetData? data, {int index = 0}) → JsonWidgetData
Returns a non-null child for widgets that must always have child widgets. This allows the widget to be built and rendered even if the child is missing.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
remove(JsonWidgetData data) → void
Called when a JSON widget is removed from the tree due to a conditional. Custom widgets may need to implement this to clean up values that may have been placed on the JsonWidgetRegistry by the widget.
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Methods

fromDynamic(dynamic map, {JsonWidgetRegistry? registry}) → JsonSetDefaultValueBuilder?
Builds the builder from a Map-like dynamic structure. This expects the JSON format to be of the following structure:

Constants

kNumSupportedChildren → const int
type → const String