handlePreviousModeStepByStep method
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Implementation
Future<void> handlePreviousModeStepByStep() async {
assert(quiz.steppingModeType == QuizSteppingModeTypes.step_by_step);
bool isGoingToPrevious = true;
assert(isGoingToPrevious == true);
_resetFormError();
if (!mounted) return;
String newStatus = getUpdatedStatus(isGoingToPrevious: isGoingToPrevious);
_beforeStepChange();
quiz.handlePreviousStep();
await _onStepChanged(newStatus: newStatus);
_redrawListOfQuestions();
_resetScrollToTopUnanimated();
}