Pop-out cells.

[okennedy]

Pain-point: The notebook cells appear in-order. When using some of the more complex cells (scripts and queries, most frequently), I find myself frequently needing to scroll back to view one output or another, and then scroll back to the point I was working on. Support for putting all of the information I need in one place is limited.

Proposed solution: Allow cells (and/or individual cell outputs) to be 'popped out' of the current window. The cell would stay in place in the notebook, but a copy of the cell's module / module editor would appear in a newly created browser window. Some example use cases:

• Popping out a parameter entry cell and viewing the effects of changes on a later cell in the notebook reactively.
• Popping out a load dataset cell and/or a dataset view to see the schema, profiler output, etc... while writing a script/query that depends on the cell.
• Popping out a chart for presentation purposes.

Variants:

• Instead of popping a cell or output out of the browser window, we could "dock" the output to part of the main browser window. This would create a UI more similar to e.g., Jupyter lab. I'm personally more of a fan of letting my OS handle window management, but depending on how the UI is designed, perhaps both could be implemented.

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I'm not sure how easy this would be to implement in react, but with Websockets it should be super easy to implement in the scala version for 2.0.