Send avatar requests in the background

[ishank011]

When the 'Shared with me' or 'Shared with others' tab is opened, web sends requests to the /remote.php/dav/avatars/$username/128.png to get the profile pictures for the collaborators. While it definitely improves the UX, it significantly increases the latency.

[pascalwengerter]

Great feedback, thanks!

For anyone looking into this:

• we perhaps want to use the native lazy loading functionality provided by the HTML img tag
• we're using the avatar component from the ownCloud design system
• the avatar component is based on https://github.com/eliep/vue-avatar - I've already openend an issue for lazy loading of avatar images, might work on this myself soon

[exalate-issue-sync]

Pascal Wengerter commented: WIP PoC to be found here: owncloud/owncloud-design-system#1242

Discussed with [~bkulmann] and [~dchristofas] that we may have to implement some backend functionality around avatar images to further improve loading performance

[exalate-issue-sync]

Florian Schade commented: the lazy loaing of images is only one side of the whole task, in our case we need to get the pre-signed url even before we able to paint the actual image to the ui.

This is done in a async way right now, and stops the rendering of the whole table. Is fixed in: #5073

[ishank011]

Still happens in foreground. Tested with e229c60

[micbar]

@ishank011 did you test with a local build?

#5073 is not yet released. It is part of v3.2.0-rc2