private void AbbPreviousWeek_Click(object sender, RoutedEventArgs e)
{
DaysOfWeek days = viewModel.Controller.ViewDays;
if (days.GetDaysOfWeek().Count() == 1)
{
if (days.Contains(viewModel.Settings.RefTime.DayOfWeek))
{
viewModel.Settings.RefTime = viewModel.Settings.RefTime.AddDays(-7);
}
if (days == DaysOfWeek.Monday)
{
days = DaysOfWeek.Sunday;
}
else
{
days = (DaysOfWeek)((int)days >> 1);
}
viewModel.Controller.ViewDays = days;
}
else
{
viewModel.Settings.RefTime = viewModel.Settings.RefTime.AddDays(-7);
}
}