Description

I am trying to satisfy some requirement such as:

• max amount of rows: codemirror is not a textarea and rows work out of CSS. We don't have a way to keep the editor area size reasonable, I'd like to add that in here.
• the setup node delays the visualization of the code and that's bad. Setup should eventually be able to be async and run once before the code gets evaluated.
• there is no way to reuse an env name if the previous node/element was destroyed (SPA use case), now there is one via env-override boolean attribute
• there is no way to run some arbitrary code each time Run button is pressed, not there is one via onbeforerun attribute, it contains Python code to run ASAP before anything else
• there is no way to target an already available DOM element as output for print statements, now there is one via output attribute, it contains the element output target id to use instead of creating a new div for it

Changes

Checklist

• I have checked make build works locally.
• I have created / updated documentation for this change (if applicable).