internal long CalculateSize()
{
long sum = 0;
foreach (IMediaItem item in _items)
{
MediaFolder folder = item as MediaFolder;
if (folder != null)
{
sum += folder.CalculateSize();
}
else
{
MediaFile file = item as MediaFile;
sum += file.Length;
}
}
return(sum);
}
public void Refresh()
{
// TODO: Figure out a way to update space nicely WITHOUT rewalking everything
_available = _root.CalculateSize();
}