QlineEdit auto detects path

Hi all,

I am not sure if the name of the poll is accurate

but What i want to ask about is,
I have QlineEdit to hold file path .
I want make the QlineEdit similar to typing a path in the terminal. when you start typing the path and hit the Tab, it auto completes the name for you.
in case of many file/directories start with the same letters you already wrote, it drop a list of the all files with the same name in that directory.

Especially the drop list, what widget/object would be the best for that ??

I hope this make my question clear.

Thank you :)