Enhance maintenance recognition

[tobiasKaminsky]

With #502 we have a recognition of maintenance mode for

• create, rename, move, delete of files/folders
• upload new files

But you can still browse the file list and refresh the folder listing without any knowledge that the server is currently in maintenance mode.

@jancborchardt @eppfel please give us an hint how to show it to the user.

[AndyScherzinger]

@tobiasKaminsky I'd say the same way we will show client being offline (no connection) 😄

And yes, I still need to provide the mockup...

[tobiasKaminsky]

Maybe you want to assign it to yourself?

[AndyScherzinger]

Initially, yeah. At least for the mockup

[AndyScherzinger]

@tobiasKaminsky here are your mockups, the inital implementation can be found here :)
https://github.com/nextcloud/android/tree/offlineDisplay

[AndyScherzinger]

[AndyScherzinger]

feel free to utilize the UI part @tobiasKaminsky :)

[tobiasKaminsky]

Looks great, linked mockups to #1143
This issue is about show "server is in maintenance mode" when doing CRUD, but it can have the same UI.

[AndyScherzinger]

reposting the branch just in case, since it is not just a mockup but a UI implementation already in place but not in use yet: https://github.com/nextcloud/android/tree/offlineDisplay