WIP: allow progressive and ajax/SPA templates - #60
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As discussed in person, closing in favor of #133. (Will reconsider later). |
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This PR allows the template system to load progressively, or use ajax to dynamically load the notebook output.
The idea (which I feel is not 100% solid yet, since it feels not that easy to explain / not super intuitive) is to have 2 phase, phase 0 and 1.
By default, voila executes both phases (and if voila.html is not present, phase 0 will be effectively skipped).
Progressive loading works the following:
<html>...<body>....<script that removes spinner> .... </body></html>A SPA (single page app) that would like to use ajax, could use the following strategy.
phase=1An example of how it looks using the 'progressive' template:
(using ajax kind looks the same)
There is quite some duplication of template snippets, although I am not sure we can nicely fix this without creating confusion. Also, I don't like the phase=0/1 naming; we can think about a different name, or have different tornado handlers for each phase.
I do like that it is becoming quite flexible. I can see, with this PR, that one could create a single page dashboard that could load different notebooks without a page reload for instance.