Question Add buttons to the UI Builder inspector of a custom component.

Is it currently possible to add a button to the UI Builder inspector?
I have a custom component and I would like a button to execute some actions on it.

Right now I do some string trickery to make it look a little like a button:


Clicking on the "[ Restart Particles ]" triggers an action on my custom component. I do not care about the value of the checkbox at all. It's the best replacement for a button I have come up with so far but I am sure we can do better, no?

Also, can we trigger the UNSET action via code on the inspector? I'd like to keep that white bar away from my fake buttons.



Thank you

 

Right now I believe the answer is: not yet. But it is planned.

 

I have found a way to "reset" the values with reflection, though it's ugly.

Code (CSharp):

1. public override void Init(VisualElement ve, IUxmlAttributes bag, CreationContext cc)
2. {
3.     base.Init(ve, bag, cc);
4.  
5.     // List<string> m_Properties in UXMLAsset (https://github.com/Unity-Technologies/UnityCsReference/blob/ddda763e79614c13cb63ec8b9dac375fd3be2b24/ModuleOverrides/com.unity.ui/Core/UXML/UxmlObjectAsset.cs)
6.     var fieldInfo = bag.GetType().GetField("m_Properties", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic);
7.     if (fieldInfo != null)
8.     {
9.         var fields = fieldInfo.GetValue(bag) as List<string>;
10.         for (int i = 0; i < fields.Count-1; i++)
11.         {
12.             var field = fields[i];
13.             string fieldLower = field.ToLower();
14.             if (fieldLower.Contains("particles")) // <- filter the fields you need to reset.
15.             {
16.                 fields[i + 1] = "false"; // I know my field is a bool.
17.             }
18.         }
19.     }
20.  
21.     // ...
22.  
23. }