private static bool LoadIfNodeIsUnloadedThemeList(TmTreeNode newNode)
{
if (newNode == null)
return false;
ThemeListNode tlNode = newNode.TmNode as ThemeListNode;
if (tlNode == null || !tlNode.IsValid)
return false;
if (!tlNode.NeedsLoading)
return true;
tlNode.BeginUpdate();
if (TryToLoadThemeList(tlNode))
{
// This method may be called on a background thread, if so we need to us Invoke
// to access the UI on the primary thread.
Trace.TraceInformation("{0}: Start updating tree for {1}", DateTime.Now, tlNode.Name); Stopwatch time = Stopwatch.StartNew();
TmTreeView tv = newNode.TreeView as TmTreeView;
if (tv != null)
if (tv.InvokeRequired)
tv.Invoke(tv.UpdateDelegate, new object[] { newNode, true });
else
tv.UpdateNode(newNode, true);
time.Stop(); Trace.TraceInformation("{0}: End updating tree for {1} - Elapsed Time: {2}", DateTime.Now, tlNode.Name, time.Elapsed);
tlNode.UpdateAge();
tlNode.EndUpdate();
return true;
}
tlNode.UpdateAge();
tlNode.EndUpdate();
return false;
}
public RestoreThemeListsWorker(TmTreeNode treeNode, WorkerCallback func)
{
_node = treeNode;
_func = func;
}