In looking through the CoralUI 3 documentation Home | CoralUI there doesn't appear to be any OOTB component that allows a user to pick a path within the AEM JCR repository. I looked through some of code used for ACS Commons and it looks like they either just put in a generic Text Field and as the user to enter the path such as /content/#####/#### or they use an older ExtJS widget which is built for the ClassicUI.
So are there any examples out there of using such a Widget or Component in Touch UI within the AEM Screen themselves, not via a dialog.