More advanced expression editor

Now we’re getting close to the completion of adding basic expression support to the editor (see #223), here are my plans for more advanced editing. The approach is to add inline widgets into the JSON editor. A simple example is color

There is a demo of that here https://2354-84182601-gh.circle-artifacts.com/0/artifacts/build/index.html - note it just displays colors with a click handler right now, open ‘Zoomstack roads’ and go to the ‘sites’ layer, to see what’s in the screenshot.

Looking through the spec I believe we could add support for

• Color - via a color picker, this would be for any value that matches a color string regardless of spec.
• Number - from spec with min/max values defined
• Image - pick image ids from spritesheet, would pick up ["image", "foo"] in expressions.
• Enum - Any field spec that has a enum

I think color is probably the most important here because colors are the most tricky thing to get right in a design.

Anyway what do people think?

[pathmapper]

@orangemug looks good from the first impression!

Would it be possible somehow to read the whole description from the style spec? Currently the description is cropped and ends with ...

From where are the available properties with description are coming from? Is there need to have special metadata properties in the data? What happens if this (meta-)data is not available?

[orangemug]

@pathmapper I’ve removed this from v1.8.0 milestone, I think we should get the accessibility/deployment changes live first.