private void DeleteItem(object filenameitem)
{
FileNameItem fni = filenameitem as FileNameItem;
Mementor.ElementRemove(FilePaths, fni);
FilePaths.Remove(fni);
}
private void ClearUnselected()
{
Mementor.Batch(() =>
{
for (int i = FilePaths.Count - 1; i >= 0; i--)
{
if (!FilePaths[i].FileIsSelected)
{
Mementor.ElementRemove(FilePaths, FilePaths[i]);
FilePaths.Remove(FilePaths[i]);
}
}
});
}
private static void ClassChanged(object sender, NotifyCollectionChangedEventArgs args)
{
switch (args.Action)
{
case NotifyCollectionChangedAction.Move:
M.ElementIndexChange((Class)sender, (Student)args.OldItems[0], args.OldStartingIndex);
Cache = new ObservableCollection <Student>((Class)sender);
break;
case NotifyCollectionChangedAction.Add:
case NotifyCollectionChangedAction.Replace:
case NotifyCollectionChangedAction.Remove:
if (args.OldItems != null)
{
foreach (var student in args.OldItems.Cast <Student>())
{
M.ElementRemove((Class)sender, student, Cache.IndexOf(student));
student.PropertyChanging -= StudentChanging;
}
}
if (args.NewItems != null)
{
foreach (var student in args.NewItems.Cast <Student>())
{
M.ElementAdd((Class)sender, student);
student.PropertyChanging += StudentChanging;
}
}
Cache = new ObservableCollection <Student>((Class)sender);
break;
default:
throw new NotSupportedException();
}
}