Test: Editing large notebooks with the Notebook outline view visible

[DonJayamanne]

Refs: #209787

• anyOS @isidorn
• anyOS @amunger
• anyOS @jrieken

Complexity: 2

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Pre-requisites

1. Install latest pre-release version of Jupyter extension
2. Create a notebook with at least 200 code cells & 200 markdown cells (the more cells you have the better)
   • Code cells could contain could be print("Hello World")
   • Markdown cells needs to be more complex such as

   # Header 1
   ## Header 2
   ### Header 3

   • Tip: Best to have them alternating.
   • You can create one code cell and one markdown cell, then copy them and paste them a few times.
   • Then copy all cells and copy & paste them
3. Ensure notebook outline is visible
4. Enable the setting Notebook: Show Code Cells Symbols
5. Enable Notebook: Sticky Scroll

Test Steps

1. Open the notebook
2. Start editing the notebook
3. Verify you can edit the code cells and markdown cells and there is no lag in editing text (previously this would be slow)
4. Verify the outline gets updated as and when you update the markdown & or code cells.

[isidorn]

@DonJayamanne can you please provide a good notebook file to test this?
I can not manually copy / paste a 100 times these cells, since Copy Cell Down does not support multi-cell select. Or if it does, do let me know how to trigger.

Thank you 🙏

[jrieken]

@isidorn I can copy-paste multiple cells. Also, at the end of the day these are just JSON files that you can edit

[isidorn]

Good point. I forgot it has a nice JSON representation. I was able to create the cells. Thanks for the tip.

[amunger]

that co-pilot issue is the only thing that gave me some hiccups. scrolling up and down quickly causes some frames to skip while the editor is attached, but I'm pretty sure users aren't complaining about that at this point.