Widgetbook use case with knobs

CustomButton Widget

@widgetbook.UseCase(
  name: 'Customizable',
  type: CustomButton,
)
CustomButton customizableButton(BuildContext context) {
  return CustomButton(
    title: context.knobs.string(label: 'Title', initialValue: 'Click Me'),
    onPressed: context.knobs.boolean(label: 'Enabled', initialValue: true) 
        ? () {} 
        : null,
  );
}