Progress bar for startup and code execution status

[jooyoungseo]

Progress bar indicator would be useful for users to get a better sense of how long they have to wait. Along with visual progress bar, we could consider adding incremental sound to non-visually indicate its progression.

[jimjam-slam]

It would be lovely to define where on the page the WebR status indicator gets inserted (in the same way that a website listing can have an id specified to insert into), so that you could quickly make it a sticky element if needed!

[coatless]

The id portion would be interesting; but, I'm not sure there is an easy way to have a "default" location that is still inside the <header> region. The later part would likely need format overrides due to lack of a title-only option in quarto.doc.include_text()).

Code cell-wise, we're likely going to move to using a "Green" play button that gets replaced with a spinning wheel when code is executing:

https://fontawesome.com/icons/play?f=classic&s=solid&pc=%230d9c29

https://fontawesome.com/icons/spinner?f=classic&s=solid&an=spin

Unfortunately, there isn't a good way of understanding where in a calculation we are when sending code over to webR.

[jimjam-slam]

Nah, that makes sense!

[coatless]

In v0.3.7, we added a "Green" play button next to Run Code and a spinning wheel for active code cells/package installation. So, I'm going to aim to close out this ticket.