notebook rendering does not work in jupyterlab

[bmcfee]

Probably something changed dramatically in the CSS between jupyter notebook and jupyterlab.

Anyone interested in taking a look at this?

[bmcfee]

Looked into this: the problem is that jupyterlab no longer uses bootstrap, so the CSS classes we used for rendering JAMS objects in juypter notebook are now missing; specifically panels and panel-groups.

This is related to these threads: https://github.com/jupyterlab/jupyterlab/issues/3200 https://github.com/jupyterlab/jupyterlab/issues/2693 . It sounds like the jupyter folks want to expose some common CSS classes for this sort of thing, but it's unclear whether that would include enough functionality to get the nesting/expansion behavior we use currently.

[bmcfee]

I think we should hold off on fixing this. Jupyterlab seems to be a bit in flux about supporting styled outputs, so any fix we do in the short term would need to be revisited down the road anyway.

Going forward, I think a better long-term solution would be the following:

• Implement #178
• Write #19 as a jupyterlab extension along the lines of https://github.com/altair-viz/jupyterlab_voyager .
• If possible, implement a magic that would let us directly leverage the jams extension to render the jams object (or any sub-components) through the extension, rather than reimplementing it in the library.

The above is generally blocked by jams 0.4 (at least) and jupyterlab 1.0, so we can punt it for now.

[bmcfee]

For a quicker solution, we could do like xarray and just bundle our own CSS. This is probably the easiest and most reliable path forward.