feat: disallow delete graph elements

upgrade version code to 1.0.1

Author: SolarianZ

Editor/Scripts/GraphView/PlayableGraphView.cs

@@ -22,6 +22,8 @@ public PlayableGraphView()
             //this.AddManipulator(new SelectionDragger());
             this.AddManipulator(new RectangleSelector());
             SetupZoom(ContentZoomer.DefaultMinScale, ContentZoomer.DefaultMaxScale);
+
+            deleteSelection = OnDeleteSelectionEvent;
         }
 
         public void Update(PlayableGraph playableGraph)
@@ -136,5 +138,10 @@ private void CalculateLayout()
                 origin.y += treeSize.y + GraphViewNode.VerticalSpace;
             }
         }
+
+        private void OnDeleteSelectionEvent(string operationName, AskUser askuser)
+        {
+            // disallow delete graph elements
+        }
     }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.greenbamboogames.playablegraphmonitor",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "displayName": "PlayableGraphMonitor!",
   "description": "PlayableGraph monitor.",
   "unity": "2019.4",