Can't Reorder Elements of a UnityEvent

[JingHaoYao]

Hi, I've been working with UnityEvents in the inspector and I noticed in GenericUnityInternals that it overrides a custom property drawer for unityevents.

https://forum.unity.com/threads/reorder-unity-events-in-the-inspector.350712/ https://answers.unity.com/questions/1398221/how-to-re-arrange-button-onclick-event-in-unity.html?childToView=1846873#answer-1846873

I've been wanting to reorder callbacks of unityevents in the inspector (as unity doesn't seem to be changing the way listeners are called anytime soon), but I can't write a custom property drawer while GenericUnityEventDrawer does so. Would it be possible to override SetupReorderableList(ReorderableList list) in GenericUnityEventDrawer and set the list to be draggable?

Thank you!

[SolidAlloy]

Hi, great advice! I've made callbacks reorderable by default and will release it in a new version soon, but you should be able to override GenericUnityEventDrawer yourself too.

1. Create a property drawer for UnityEvents.
2. Use DrawerReplacer.ReplaceDefaultDrawer to override the default drawer

3. Use callback order 1 or greater in DidReloadScripts so that it runs after GenericUnityEventDrawer

   [CustomPropertyDrawer(typeof(UnityEventBase), true)]
   public class CustomUnityEventDrawer : GenericUnityEventDrawer
   {
   // You can inherit from the default UnityEventDrawer too.
   
   [DidReloadScripts(1)]
   private static void ReplaceDefaultDrawer()
   {
       DrawerReplacer.ReplaceDefaultDrawer<UnityEventBase, CustomUnityEventDrawer>();
   }
   }

[SolidAlloy]

Callbacks are now reorderable in 2.10.0 :tada: