Called after all a successful create operation to update the GUI in an intuitive way:
The parent folder is refreshed in all views
The newly created file or folder is selected in current view
Update the history with current entry field setting, and optionally refresh the list from the new history
This is called automatically for you when setText is called.
This is a convenience method for constucting a "used set" by taking
the individual characters of a string
in both lower and upper cases and adding them to the set.