of static method

WizardController of(
  1. BuildContext context
)

The closest instance of this class that encloses the given context.

{@tool snippet} Typical usage is as follows:

WizardController controller = DefaultWizardController.of(context);

{@end-tool}

Implementation

static WizardController of(
  BuildContext context,
) {
  final _WizardControllerScope? scope =
      context.dependOnInheritedWidgetOfExactType<_WizardControllerScope>();
  final controller = scope?.controller;
  if (controller == null) {
    // TODO: improve
    throw Exception(
      "No wizard controller can be found within the widget tree. Please make sure your widget is wrapped with a DefaultWizardController widget.",
    );
  }
  return controller;
}