public NoteToolsViewModel(PianoRollViewModel vm)
{
ViewModel = vm ?? throw new ArgumentNullException(nameof(vm));
if (ViewModel.SelectedItems.Count() != 0)
{
OrderByStart(ViewModel.SelectedItems.Cast <NoteViewModel>());
}
else
{
OrderByStart(ViewModel.Notes);
}
}
public ChopperViewModel(PianoRollViewModel vm)
: base(vm)
{
}