Add pagination for directory listings about cryptomator-ios HOT 4 CLOSED

This issue has come up due to #38. To fix #38 an approach to load all entries at once by repeatedly invoking the google api has been implemented. This issue improves performance by loading additional entries only if required (scrolling to the bottom in the UI or similar user interaction).

from cryptomator-ios.

I've look into the APIs and it looks like that this also applies to OneDrive. Apparently, the default page size is limited to 200.

from cryptomator-ios.

There is a HUGE PROBLEM though. I don't know how to implement this properly. Encrypted and unencrypted files are obviously not alphabetically sorted in the same way. How should we support "infinite scrolling" and keep the sorting intact? 😕

Edit: Could be solved by:

1. Loading the complete contents of directory first (recursively through all pages)
2. Decrypt filenames
3. Sort filenames (this can be changed in the future, we don't want to support "alphabetically sorted" only)
4. Present contents of directory to user, doesn't hurt to use pagination, even though the whole content has already been loaded from the cloud

There is just no acceptable "server-side" solution, everything has to be done client-side. So there is no performance gain (or more precisely, you can't save bandwidth).

from cryptomator-ios.

Fixed for Google Drive and OneDrive and implemented in the way as suggested (client-side, directory listing completely loaded before showing any results to the user). Wasn't necessary for iCloud Drive, Dropbox, and WebDAV.

from cryptomator-ios.