CallbackTourStorage constructor

const CallbackTourStorage({ required Future<bool> isCompleted(String tour), required Future<void> setCompleted(String tour, bool completed), Future<int?> lastIndex(String tour)?, Future<void> saveIndex(String tour, int? index)?, })

Creates a storage backed by isCompleted and setCompleted.

lastIndex and saveIndex are optional: supply both to support TourController.start with resume: true, or neither to keep tours starting from the beginning.

Implementation

const CallbackTourStorage({
  required Future<bool> Function(String tour) isCompleted,
  required Future<void> Function(String tour, bool completed) setCompleted,
  Future<int?> Function(String tour)? lastIndex,
  Future<void> Function(String tour, int? index)? saveIndex,
})  : _isCompleted = isCompleted,
      _setCompleted = setCompleted,
      _lastIndex = lastIndex,
      _saveIndex = saveIndex;