Generate VisualElementAsset/StyleSheet from a string?

I have spent some time playing around with the UIElementsUniteCPH2019RuntimeDemo project.

Is there a way to generate VisualElementAsset/StyleSheet from a string?

If not, is it a planed feature?

This could be useful if you wanted to load from a file/server.

 

In HTML/JavaScript world it is very useful and easy to use tool

 

The classes to do this seem to be in the StyleSheetImporter (in Editor namespace); maybe you can try extracting that as a starting point. All is internal so it doesn't look like there's an official way to do this.
https://github.com/Unity-Technologi...s/StyleSheetsEditor/StyleSheetImporterImpl.cs

 

+1 for runtime uss classes created from code

 

Congrats to the release of Unity 2021.2!
I see it includes the new UIToolkit.

Is there now a way to load StyleSheets at runtime (from String)?
Or did anyone find a workaround?

 

+1 for runtime uss classes created from code

 

Here is a compromise that I think would work for everyone: Add a single method to create a StyleSheet from String.

This way, you can keep rules, selectors, variables etc. as internal implementation details.
But we would be able to create StyleSheets at runtime by constructing / loading the USS text.

AFAIK, browsers as well do not have API to add/remove/edit/iterate single rules or selectors of styleSheets.
Instead, the approach is to add a style-Element to the DOM, i.e., create the CSS text that the browser will parse ( https://stackoverflow.com/questions...ally-create-css-class-in-javascript-and-apply ).
Same approach would work for Unity.

Unity, please consider this!

StyleSheet already has a public constructor. Thus, adding a single method to create a StyleSheet from String would be a minimal extension to public API.

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See also other thread with same issue: https://forum.unity.com/threads/loading-uxml-and-uss-from-text-in-runtime.1200964/