private async void AppBarButtonAdd_Click(object sender, RoutedEventArgs e)
{
if (App.Timetable.Subjects.Any())
{
var viewModel = ((HomeworkOverviewPageViewModel)this.DataContext);
var subject = App.Timetable.Subjects.First();
if (this.DataPivot.SelectedItem == FilteredPivotItem && viewModel.HomeworkFilter != viewModel.NoFilterSubject)
subject = App.Timetable.Subjects[viewModel.HomeworkFilter.GetIndex(App.Timetable.Subjects)];
var homework = new Homework(subject);
homework.FromDate = DateTime.Today;
homework.ToDate = App.Timetable.GetNextDate(subject, LessonViewModel.GetIsOddWeek());
App.Timetable.Homeworks.Add(homework);
Frame.Navigate(typeof(EditHomeworkPage), App.Timetable.Homeworks.IndexOf(homework));
}
else
{
await new MessageDialog(Strings.PageHomeworkOverviewNoSubjectWarning, Strings.MessageBoxWarningCaption).ShowAsync();
Frame.Navigate(typeof(GeneralDataEditor));
}
}
public EditHomeworkPageViewModel(Homework homework, Timetable timetable)
: base(homework)
{
this.Subjects = new ReadOnlyCollection<SubjectViewModel>(timetable.Subjects.Select(p => new SubjectViewModel(p)).ToList());
}