update file list after closing Nextcloud Office document

[alexanderdd]

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Is your feature request related to a problem? Please describe.

1. open an office file in Nextcloud Office (Collabora) web interface
2. click export to pdf
3. close office file
4. why is my pdf not shown, I just exported it!
5. reload page
6. ahh, there is my pdf!

Describe the solution you'd like
pdf should be visible right after I close the office document, so: update file list after closing Nextcloud Office document

Maybe also a more general solution: immediately push file creation/deletion to all existing open browser tabs/windows (always, not only when closing an office file)

[susnux]

Context:
When a file is exported in the same directory the app that created that file should emit the correct event through the event bus to let the files app know about it (files:node:created).

[juliusknorr]

In the past we reloaded the files list but also dropped that due to performance impact.

The export is happening asynchronously in the background and currently our frontend code base is not aware when the export or save as will be finished.

Probably something to talk about if Collabora can notify us through a post message.

I'd also be curious if a more generic way of handling this could make sense. One thing I could imagine is that notify_push could propagate the new file and the files app could add it directly (related nextcloud/desktop#6430) Of course that is a different level of complexity.