public StepTransitionResult Back()
{
if (!CanGoBack)
{
return(StepTransitionResult.Failure("This is the first step"));
}
_currentIndex--;
return(StepTransitionResult.Success());
}
public StepTransitionResult Next(Node node)
{
if (node == null)
{
throw new ArgumentNullException(nameof(node));
}
if (!CanGoForward)
{
return(StepTransitionResult.Failure("This is the last step"));
}
StepTransitionResult result = _steps[_currentIndex].Next(node);
if (result.CanTransition)
{
_currentIndex++;
}
return(result);
}