[Fix] Disable reset option (#41)

* Disable reset option

* Add repro case 1251533

Author: PaulDemeulenaere

com.unity.visualeffectgraph/CHANGELOG.md

@@ -104,6 +104,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Missing Reset function in VFXPropertyBinder [Case 1219063](https://issuetracker.unity3d.com/product/unity/issues/guid/1219063/)
 - Fix issue with strips outputs that could cause too many vertices to be renderered
 - SpawnIndex attribute returns correct value in update and outputs contexts
+- Disable Reset option in context menu for all VFXObject [Case 1251519](https://issuetracker.unity3d.com/product/unity/issues/guid/1251519/) & [Case 1251533](https://issuetracker.unity3d.com/product/unity/issues/guid/1251533/)
 
 ## [7.1.1] - 2019-09-05
 ### Added

com.unity.visualeffectgraph/Editor/Models/VFXModel.cs

@@ -11,6 +11,19 @@ namespace UnityEditor.VFX
 {
     class VFXObject : ScriptableObject
     {
+        //Explicitly disable the Reset option on all VFXObject
+        //Internal Reset() behavior leads to a dandling state in graph object
+        [MenuItem("CONTEXT/VFXObject/Reset", false)]
+        public static void DummyReset()
+        {
+        }
+
+        [MenuItem("CONTEXT/VFXObject/Reset", true)]
+        static bool ValidateDummyReset()
+        {
+            return false;
+        }
+
         public Action<VFXObject> onModified;
         void OnValidate()
         {