void CollectNestedItems(FolderItem parentItem, CancellationToken cancellationToken)
{
if (parentItem == null || parentItem.IsFile)
{
return;
}
if (cancellationToken.IsCancellationRequested)
{
return;
}
(parentItem as FolderItem).IsProcessing = true;
var parentPath = parentItem.GetPath();
if (string.IsNullOrEmpty(parentPath))
{
return;
}
parentItem.AddChildrenRange(ProcessContent(fileSystemProvider.GetDirectoryContent(parentPath), cancellationToken));
if (cancellationToken.IsCancellationRequested)
{
return;
}
parentItem.IsProcessing = false;
if (!parentItem.HasChildren)
{
parentItem.UpdateIsValid(true);
}
OnFileSystemItemProcessed(parentItem);
}