protected override Task <IReadOnlyCollection <IGoogleDriveFile> > PopulateFolderAsync(ITreeNodeContainer folderNode, CancellationToken ct, IProgress <string> progress)
{
if (!folderNode.ChildrenTask.IsCompleted)
{
var parent = folderNode.CastTo <TreeNodeContainer>().DataItem.CastTo <IGoogleDriveFolder>();
if (parent.IsMyDriveFile() || (parent.File.IsNot <GoogleTeamDrive>() && parent.IsTeamDriveFile()))
{
Items.Clear();
var observable = _gService.GetChildFilesObservable(parent, ct: ct);
observable.Buffer(TimeSpan.FromMilliseconds(400))
.ObserveOn(SynchronizationContext.Current)
.Subscribe(lf => Items.AddRange(lf.SelectMany(i => i)), RaiseFilesPopulated);
return(Task.FromResult(Empty));
}
}
return(base.PopulateFolderAsync(folderNode, ct, progress));
}
