public static QuestionViewModel GetViewModelForQuestion(Question question)
{
Func<Question, QuestionViewModel> viewModelInstanceFactory = null;
if (maps.TryGetValue(question.GetType(), out viewModelInstanceFactory))
{
return viewModelInstanceFactory(question);
}
else
{
throw new ArgumentOutOfRangeException("Could not locate a view model for question type");
}
}
private QuestionViewModel CreateQuestionViewModel(Question question)
{
QuestionViewModel vm = QuestionViewModelFactory.GetViewModelForQuestion(question);
vm.ResponseChanged += this.OnQuestionResponseChanged;
return vm;
}