Unity UIToolkit Runtime Binding Extension

BindingExtensions.cs

using System;
using System.Collections.Generic;
using System.Reflection;
using UnityEngine.UIElements;

namespace UI
{
    public static class BindingExtensions
    {
        public static void Bind(this VisualElement element, object data)
        {
            element.BindValues(data);
            if (element.childCount == 0)
            {
                return;
            }

            foreach (var child in element.Children())
            {
                child.Bind(data);
            }
        }

        private static void BindValues(this VisualElement element, object data)
        {
            if (element is Label label && label.bindingPath != null)
            {
                foreach (var (name, value) in data.Values())
                {
                    if (label.bindingPath.Equals(name))
                    {
                        label.text = (string) value;
                    }
                }
            }
        }

        private static IEnumerable<Tuple<string, object>> Values(this object data)
        {
            foreach (var fieldInfo in data.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance))
            {
                yield return Tuple.Create(fieldInfo.Name, fieldInfo.GetValue(data));
            }
        }
    }
}

Hi!
I found this piece of code searching for some solution for UI toolkit Runtime Binding, and have just tried it, but couldn't make it work.

I've followed the same steps that work for Editor Binding (which I found working for runtime but only in play mode, it wont allow you to make a build)

I have an uxml with 6 input fields that bind to variables in my UI interface controller script, I've created a SerializedObject from that script and bind it to the UIDocument, but only one of the input fields shows the correct value of the variable, and 2 way binding is not working either.

Am I skipping some steps?

Thanks!

Hey @FornostAD!
The approach in this gist just writes all the values from an object once into a VisualElement.
We no longer use this approach and use UniRx instead together with the following bits:

• https://gist.github.com/scho/6ec3f30653119b3856b1a9edfd5b0b7b
• https://gist.github.com/scho/d737ec33aa3b5b1e7fc8e04990d866d2