Enable empty path for geojson layer

[HaudinFlorence]

Description

Create an empty vector layer with empty embedded data when no path is provided

Screencast.From.2025-07-11.16-00-04.mp4

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📚 Documentation preview: https://jupytergis--810.org.readthedocs.build/en/810/
💡 JupyterLite preview: https://jupytergis--810.org.readthedocs.build/en/810/lite

[github-actions]

👈 Launch a Binder on branch HaudinFlorence/jupytergis/enable_empty_path_for_geojson_layer

[github-actions]

Integration tests report: appsharing.space

[mfisher87]

How can we indicate to the user that this is what is happening?

What about a checkbox "Create an empty GeoJSON layer. I will add my own data with the draw tool."?

[HaudinFlorence]

How can we indicate to the user that this is what is happening?

What about a checkbox "Create an empty GeoJSON layer. I will add my own data with the draw tool."?

You are right that it would be more explicit to better inform the user. I will try to propose something.

[HaudinFlorence]

We previously decided to propose to add this message in brackets If no path/url is provided, an empty GeoJSON is created, but that's probably not enough.

[mfisher87]

Dynamic "Field A || Field B" interactions are one of those cases that I think is really hard with our generate-forms-from-schemas technique. I'm not sure how to resolve this yet. Maybe this is something we can brainstorm together at a hackathon!

[HaudinFlorence]

bot please update snapshots

[martinRenou]

@HaudinFlorence please undo the bot's commit, it's not using the right command, resulting in those files being added with the wrong names.

We should update the bots to use the latest of https://github.com/geojupyter/jupytergis/blob/main/.github/workflows/update_galata_references.yaml#L104 (replace v1 -> main like in https://github.com/jupytercad/JupyterCAD/blob/main/.github/workflows/update_lite_galata_references.yaml)