StaticWidget class abstract

A widget that is only built once.

This build method of this widget is only called during the first build. When the widget is rebuilt the same widget is returned that was returned when build was called for the first time.

This allows stateful objects, such as ValueCell's to be defined directly in the build method:

class Counter extends StaticWidget {
  @override
  Widget build(BuildContext context) {
    final count = MutableCell(0);
    final strCount = ValueCell.computed(() => count().toString());

    return ElevatedButton(
      child: CellText(data: strCount),
      onPressed: () => count++
    );
  }
}

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• StaticWidget

Constructors

StaticWidget({Key? key, String? restorationId})

const

StaticWidget.builder(WidgetBuilder builder, {Key? key, String? restorationId})

Create a StaticWidget with the build method defined by builder.

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

restorationId → String?

Restoration ID to use for restoring the cell state

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

inherited

createElement() → StatelessElement

Creates a StatelessElement to manage this widget's location in the tree.

override

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent 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.info}) → String

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 ==(Object other) → bool

The equality operator.

inherited