Your comments

Sounds good. I've seen similar implementations in IDEs from Borland/Inprise/Embercadero.
Umm, are you sure you're asking this in the right support forum? Textastic doesn't include a PDF viewer. Maybe I'm missing something?
Are you trying to move local files into a different folder? Or are you talking about remote files?
Sounds like a good idea.

P.S.: Lange nichts voneinander gehört :)