Access file and directory selection dialogs

[hadley]

Compared to file.choose() these would allow you to:

• Set the starting directory

• Select directories, rather than files

• Optionally, operate like a save dialog where you can enter a file name

[kevinushey]

Can you elaborate a bit on why the save dialog would be useful here?

I agree that rstudioapi::openFile() would be useful for selecting one or more files using the system dialog (or web dialog for RStudio Server)

[hadley]

Sometimes you want to ask people where they'd like to create a file and what to call it. (As opposed to electing an existing file)

[vnijs]

Access to the Data Import dialog, Spark connection dialog, and (future) DB connection dialogs would also be wonderful