private async Task <BrowseTreeItemViewModel[]> GetTreeChildren(BrowseTreeItemViewModel parent, Func <string[], Task <string[]> > getChildrenContent)
{
List <string> path = new List <string>();
BrowseTreeItemViewModel t = parent;
while (t != null)
{
path.Add(t.Text);
t = t.Parent;
}
path.Reverse();
var children = await getChildrenContent(path.ToArray());
return(children.Select(child => new BrowseTreeItemViewModel(child, parent, new GetChildren(p => GetTreeChildren(p, getChildrenContent)))).ToArray());
}
public BrowseTreeItemViewModel(string text, BrowseTreeItemViewModel parent, GetChildren children = null) : this(text, children)
{
this.parent = parent;
}