public QuestionViewViewModel(ViewModelRequirements requirements, Guid questionId, bool isNew, SlideQuestionModel questionBeforeEdit = null)
: base(requirements)
{
this.questionId = questionId;
this.isNew = isNew;
this.questionBeforeEdit = questionBeforeEdit ?? CopyHelper.CopySlideQuestionModel(this.SlideQuestionModel);
this.InitializeWindowCommandBindings();
this.QuestionTypes = this.SlideSessionModel.SessionType == SessionType.ArsnovaClick
? this.SessionInformationProvider.GetAvailableQuestionsClick()
: this.SessionInformationProvider.GetAvailableQuestionsVoting();
this.ExcelChartTypes = this.SessionInformationProvider.GetExcelChartTypes();
}