Custom Element Attribute for TreeAsset ... possible?

Hi,
i have written a custom element, a dropdown for runtime ui and i really don't want to style it in a custom way inside the code to make it reusable ... so i thought maybe i can link a VisualTreeAsset ... so the code just takes it as a template and instantiates it for the "drop of the down"

long story short ... will something be possible like the following code? (currently its not obviously)

Code (CSharp):

1. UxmlTypeAttributeDescription<VisualTreeAsset> dropDownMenuStyle = new UxmlTypeAttributeDescription<VisualTreeAsset> { name = "dropDownMenuStyle", defaultValue = null };

so it'll be possible to drag and drop a visualTreeAsset into the attribute-field inside of UIBuilder?!

or is there even a way already implemented that i totally overlooked?

Cheers

 

Already possible if you are willing to mess with the package source, the changes required for a custom UxmlAttributeDescription are pretty small, check the installation section of https://forum.unity.com/threads/easy-ecs-access-for-ui-toolkit-requires-modified-packages.952227/ to see how I did it.

 

Look interesting, i'll have a look thx!
But due too the frequent updates for the ui package it might not be very satifiying modifing this over and over again :/

 

The field shows up but with a string input field ... and not as i expected with a asset drag and drop field there i can set the uxml file.