private void RebuildFileList(FileSystemEventArgs e)
{
if (e is RenamedEventArgs)
{
int i = _fileList.IndexOf(((RenamedEventArgs)e).OldName);
_fileList[i] = e.Name;
}
else
{
switch (e.ChangeType)
{
case WatcherChangeTypes.Changed:
// Need to send event
int i = _fileList.IndexOf(e.Name);
_fileList[i] = e.Name;
break;
case WatcherChangeTypes.Created:
_fileList.Add(e.Name);
break;
case WatcherChangeTypes.Deleted:
if (_fileList.Contains(e.Name))
{
_fileList.Remove(e.Name);
}
break;
default:
break;
}
}
}
private static void ChildToAggregateMapUnmap <T>(this ConcurrentObservableCollection <T> source, ConcurrentObservableCollection <T> dest, MapUnmap mapUnmap)
{
NotifyCollectionChangedEventHandler collectionChangedHander = (s, e) =>
{
foreach (var item in e?.OldItems?.OfType <T>() ?? Enumerable.Empty <T>())
{
dest.Remove(item);
}
foreach (var item in e?.NewItems?.OfType <T>() ?? Enumerable.Empty <T>())
{
dest.Add(item);
}
};
using (var freezeToken = source.FreezeUpdates())
{
if (mapUnmap == MapUnmap.Map)
{
dest.AddRange(source);
source.CollectionChanged += collectionChangedHander;
}
else if (mapUnmap == MapUnmap.Unmap)
{
dest.RemoveRange(source);
source.CollectionChanged -= collectionChangedHander;
}
}
}