StacRadioGroup class

A Stac model representing a radio group scope similar to Flutter's form scope.

Establishes a StacRadioGroupScope at runtime so descendant radio widgets can read and update a shared selected value via the scope. This widget does not render UI itself; it provides the scope and renders its child.

{@tool snippet} Dart Example:

StacRadioGroup(
  id: 'favoriteFruit',
  groupValue: 'apple',
  child: StacColumn(children: [
    StacRadio(value: 'apple'),
    StacRadio(value: 'banana'),
  ]),
)

{@end-tool}

{@tool snippet} JSON Example:

{
  "type": "radioGroup",
  "id": "favoriteFruit",
  "groupValue": "apple",
  "child": {
    "type": "column",
    "children": [
      { "type": "radio", "value": "apple" },
      { "type": "radio", "value": "banana" }
    ]
  }
}

{@end-tool}

See also:

• Flutter's Radio documentation (https://api.flutter.dev/flutter/material/Radio-class.html)