I can find tons of off-the-shelf GWT widgets that let me select browse directories and select files but I can't find a single GWT widget that'll help me select a directory (similar to how Google drive does it).
Can any one here help me out with this ?
That's not possible in GWT, because there's (currently) no browser agnostic way to do this with HTML/JavaScript.
See this related question:
Directory Chooser in HTML page
However, there apparently is a way to get this working in just Chrome (or more specifically webkit) as discussed here:
How to get folder directory from HTML input type "file" or any other way?
