Selection events for maps

[jrieke]

Checklist

• I have searched the existing issues for similar feature requests.
• I added a descriptive title and summary to this issue.

Summary

We will soon add selections to charts (st.plotly_chart and st.altair_chart) and dataframes (st.dataframe). We should also enable selection and/or click events on maps (st.pydeck_chart and st.map).

Why

Let us know in the comments if you have specific use cases in mind!

How

We'll probably reuse the on_select parameter in a similar way to charts and dataframes. We need to have a look at if and how PyDeck supports selection events. For inspiration, we should also look at the bidirectional Folium custom component.

Additional context

Related issues:

• Zoom/pan events for maps #8654

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[mkubi84]

I would love this feature! I use the Arclayer and Iconlayer from PyDeck to visualize locations and deliveries. If I could click on these, details about deliveries (quantity, cost, etc.) could be displayed as metrics using the Fragment function. 👍