Merge branch 'master' into feature-smart-noodles

.gitignore

@@ -24,3 +24,7 @@ sysinfo.txt
 README.md.meta
 LICENSE.md.meta
 CONTRIBUTING.md.meta
+
+.git.meta
+.gitignore.meta
+.gitattributes.meta

Scripts/Editor/NodeEditor.cs

@@ -13,34 +13,9 @@ namespace XNodeEditor {
         /// <summary> Fires every whenever a node was modified through the editor </summary>
         public static Action<XNode.Node> onUpdateNode;
         public static Dictionary<XNode.NodePort, Vector2> portPositions;
-        public int renaming;
 
         public virtual void OnHeaderGUI() {
-            string title = target.name;
+            GUILayout.Label(target.name, NodeEditorResources.styles.nodeHeader, GUILayout.Height(30));
-            if (renaming != 0) { 
-                if (Selection.Contains(target)) {
-                    int controlID = EditorGUIUtility.GetControlID(FocusType.Keyboard) + 1;
-                    if (renaming == 1) {
-                        EditorGUIUtility.keyboardControl = controlID;
-                        EditorGUIUtility.editingTextField = true;
-                        renaming = 2;
-                    }
-                    target.name = EditorGUILayout.TextField(target.name, NodeEditorResources.styles.nodeHeader, GUILayout.Height(30));
-                    if (!EditorGUIUtility.editingTextField) {
-                        Debug.Log("Finish renaming");
-                        Rename(target.name);
-                        renaming = 0;
-                    }
-                }
-                else {
-                    // Selection changed, so stop renaming.
-                    GUILayout.Label(title, NodeEditorResources.styles.nodeHeader, GUILayout.Height(30));
-                    Rename(target.name);
-                    renaming = 0;
-                }
-            } else {
-                GUILayout.Label(title, NodeEditorResources.styles.nodeHeader, GUILayout.Height(30));
-            }
         }
 
         /// <summary> Draws standard field editors for all public fields </summary>
@@ -63,7 +38,8 @@ namespace XNodeEditor {
             }
 
             // Iterate through instance ports and draw them in the order in which they are serialized
-            foreach(XNode.NodePort instancePort in target.InstancePorts) {
+            foreach (XNode.NodePort instancePort in target.InstancePorts) {
+                if (NodeEditorGUILayout.IsInstancePortListPort(instancePort)) continue;
                 NodeEditorGUILayout.PortField(instancePort);
             }
 
@@ -108,10 +84,7 @@ namespace XNodeEditor {
             }
         }
 
-        public void InitiateRename() {
+        /// <summary> Rename the node asset. This will trigger a reimport of the node. </summary>
-            renaming = 1;
-        }
-
         public void Rename(string newName) {
             if (newName == null || newName.Trim() == "") newName = UnityEditor.ObjectNames.NicifyVariableName(target.GetType().Name);
             target.name = newName;

Scripts/Editor/NodeEditorAction.cs

@@ -269,7 +269,7 @@ namespace XNodeEditor {
                             } else if (IsHoveringNode && IsHoveringTitle(hoveredNode)) {
                                 if (!Selection.Contains(hoveredNode)) SelectNode(hoveredNode, false);
                                 GenericMenu menu = new GenericMenu();
-                                NodeEditor.GetEditor(hoveredNode).AddContextMenuItems(menu);
+                                NodeEditor.GetEditor(hoveredNode, this).AddContextMenuItems(menu);
                                 menu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
                                 e.Use(); // Fixes copy/paste context menu appearing in Unity 5.6.6f2 - doesn't occur in 2018.3.2f1 Probably needs to be used in other places.
                             } else if (!IsHoveringNode) {
@@ -366,7 +366,12 @@ namespace XNodeEditor {
         public void RenameSelectedNode() {
             if (Selection.objects.Length == 1 && Selection.activeObject is XNode.Node) {
                 XNode.Node node = Selection.activeObject as XNode.Node;
-                NodeEditor.GetEditor(node).InitiateRename();
+                Vector2 size;
+                if (nodeSizes.TryGetValue(node, out size)) {
+                    RenamePopup.Show(Selection.activeObject, size.x);
+                } else {
+                    RenamePopup.Show(Selection.activeObject);
+                }
             }
         }
 

Scripts/Editor/NodeEditorBase.cs

@@ -14,10 +14,11 @@ namespace XNodeEditor.Internal {
 		/// <summary> Custom editors defined with [CustomNodeEditor] </summary>
 		private static Dictionary<Type, Type> editorTypes;
 		private static Dictionary<K, T> editors = new Dictionary<K, T>();
+		public NodeEditorWindow window;
 		public K target;
 		public SerializedObject serializedObject;
 
-		public static T GetEditor(K target) {
+		public static T GetEditor(K target, NodeEditorWindow window) {
 			if (target == null) return null;
 			T editor;
 			if (!editors.TryGetValue(target, out editor)) {
@@ -26,9 +27,12 @@ namespace XNodeEditor.Internal {
 				editor = Activator.CreateInstance(editorType) as T;
 				editor.target = target;
 				editor.serializedObject = new SerializedObject(target);
+				editor.window = window;
+				editor.OnCreate();
 				editors.Add(target, editor);
 			}
 			if (editor.target == null) editor.target = target;
+			if (editor.window != window) editor.window = window;
 			if (editor.serializedObject == null) editor.serializedObject = new SerializedObject(target);
 			return editor;
 		}
@@ -56,6 +60,9 @@ namespace XNodeEditor.Internal {
 			}
 		}
 
+		/// <summary> Called on creation, after references have been set </summary>
+		public virtual void OnCreate() { }
+
 		public interface INodeEditorAttrib {
 			Type GetInspectedType();
 		}

Scripts/Editor/NodeEditorGUI.cs

@@ -18,9 +18,7 @@ namespace XNodeEditor {
             Event e = Event.current;
             Matrix4x4 m = GUI.matrix;
             if (graph == null) return;
-            graphEditor = NodeGraphEditor.GetEditor(graph);
+            ValidateGraphEditor();
-            graphEditor.position = position;
-
             Controls();
 
             DrawGrid(position, zoom, panOffset);
@@ -189,7 +187,7 @@ namespace XNodeEditor {
                     Rect fromRect;
                     if (!_portConnectionPoints.TryGetValue(output, out fromRect)) continue;
 
-                    Color connectionColor = graphEditor.GetTypeColor(output.ValueType);
+                    Color connectionColor = graphEditor.GetPortColor(output);
 
                     for (int k = 0; k < output.ConnectionCount; k++) {
                         XNode.NodePort input = output.GetConnection(k);
@@ -293,7 +291,7 @@ namespace XNodeEditor {
                     _portConnectionPoints = _portConnectionPoints.Where(x => x.Key.node != node).ToDictionary(kvp => kvp.Key, kvp => kvp.Value);
                 }
 
-                NodeEditor nodeEditor = NodeEditor.GetEditor(node);
+                NodeEditor nodeEditor = NodeEditor.GetEditor(node, this);
 
                 NodeEditor.portPositions = new Dictionary<XNode.NodePort, Vector2>();
 

Scripts/Editor/NodeEditorGUILayout.cs

@@ -142,7 +142,7 @@ namespace XNodeEditor {
                 Color backgroundColor = new Color32(90, 97, 105, 255);
                 Color tint;
                 if (NodeEditorWindow.nodeTint.TryGetValue(port.node.GetType(), out tint)) backgroundColor *= tint;
-                Color col = NodeEditorWindow.current.graphEditor.GetTypeColor(port.ValueType);
+                Color col = NodeEditorWindow.current.graphEditor.GetPortColor(port);
                 DrawPortHandle(rect, backgroundColor, col);
 
                 // Register the handle position
@@ -199,7 +199,7 @@ namespace XNodeEditor {
             Color backgroundColor = new Color32(90, 97, 105, 255);
             Color tint;
             if (NodeEditorWindow.nodeTint.TryGetValue(port.node.GetType(), out tint)) backgroundColor *= tint;
-            Color col = NodeEditorWindow.current.graphEditor.GetTypeColor(port.ValueType);
+            Color col = NodeEditorWindow.current.graphEditor.GetPortColor(port);
             DrawPortHandle(rect, backgroundColor, col);
 
             // Register the handle position
@@ -228,7 +228,7 @@ namespace XNodeEditor {
             Color backgroundColor = new Color32(90, 97, 105, 255);
             Color tint;
             if (NodeEditorWindow.nodeTint.TryGetValue(port.node.GetType(), out tint)) backgroundColor *= tint;
-            Color col = NodeEditorWindow.current.graphEditor.GetTypeColor(port.ValueType);
+            Color col = NodeEditorWindow.current.graphEditor.GetPortColor(port);
             DrawPortHandle(rect, backgroundColor, col);
 
             // Register the handle position
@@ -254,6 +254,18 @@ namespace XNodeEditor {
             GUI.color = col;
         }
 
+        /// <summary> Is this port part of an InstancePortList? </summary>
+        public static bool IsInstancePortListPort(XNode.NodePort port) {
+            string[] parts = port.fieldName.Split(' ');
+            if (parts.Length != 2) return false;
+            Dictionary<string, ReorderableList> cache;
+            if (reorderableListCache.TryGetValue(port.node, out cache)) {
+                ReorderableList list;
+                if (cache.TryGetValue(parts[0], out list)) return true;
+            }
+            return false;
+        }
+
         /// <summary> Draw an editable list of instance ports. Port names are named as "[fieldName] [index]" </summary>
         /// <param name="fieldName">Supply a list for editable values</param>
         /// <param name="type">Value type of added instance ports</param>
@@ -263,13 +275,17 @@ namespace XNodeEditor {
         public static void InstancePortList(string fieldName, Type type, SerializedObject serializedObject, XNode.NodePort.IO io, XNode.Node.ConnectionType connectionType = XNode.Node.ConnectionType.Multiple, XNode.Node.TypeConstraint typeConstraint = XNode.Node.TypeConstraint.None, Action<ReorderableList> onCreation = null) {
             XNode.Node node = serializedObject.targetObject as XNode.Node;
 
-            Predicate<string> isMatchingInstancePort =
+            var indexedPorts = node.InstancePorts.Select(x => {
-                x => {
+                string[] split = x.fieldName.Split(' ');
-                    string[] split = x.Split(' ');
+                if (split != null && split.Length == 2 && split[0] == fieldName) {
-                    if (split != null && split.Length == 2) return split[0] == fieldName;
+                    int i = -1;
-                    else return false;
+                    if (int.TryParse(split[1], out i)) {
-                };
+                        return new { index = i, port = x };
-            List<XNode.NodePort> instancePorts = node.InstancePorts.Where(x => isMatchingInstancePort(x.fieldName)).OrderBy(x => x.fieldName).ToList();
+                    }
+                }
+                return new { index = -1, port = (XNode.NodePort) null };
+            });
+            List<XNode.NodePort> instancePorts = indexedPorts.OrderBy(x => x.index).Select(x => x.port).ToList();
 
             ReorderableList list = null;
             Dictionary<string, ReorderableList> rlc;
@@ -289,7 +305,6 @@ namespace XNodeEditor {
 
         private static ReorderableList CreateReorderableList(string fieldName, List<XNode.NodePort> instancePorts, SerializedProperty arrayData, Type type, SerializedObject serializedObject, XNode.NodePort.IO io, XNode.Node.ConnectionType connectionType, XNode.Node.TypeConstraint typeConstraint, Action<ReorderableList> onCreation) {
             bool hasArrayData = arrayData != null && arrayData.isArray;
-            int arraySize = hasArrayData ? arrayData.arraySize : 0;
             XNode.Node node = serializedObject.targetObject as XNode.Node;
             ReorderableList list = new ReorderableList(instancePorts, null, true, true, true, true);
             string label = arrayData != null ? arrayData.displayName : ObjectNames.NicifyVariableName(fieldName);
@@ -305,8 +320,10 @@ namespace XNodeEditor {
                         SerializedProperty itemData = arrayData.GetArrayElementAtIndex(index);
                         EditorGUI.PropertyField(rect, itemData, true);
                     } else EditorGUI.LabelField(rect, port.fieldName);
-                    Vector2 pos = rect.position + (port.IsOutput?new Vector2(rect.width + 6, 0) : new Vector2(-36, 0));
+                    if (port != null) {
-                    NodeEditorGUILayout.PortField(pos, port);
+                        Vector2 pos = rect.position + (port.IsOutput?new Vector2(rect.width + 6, 0) : new Vector2(-36, 0));
+                        NodeEditorGUILayout.PortField(pos, port);
+                    }
                 };
             list.elementHeightCallback =
                 (int index) => {
@@ -379,11 +396,26 @@ namespace XNodeEditor {
                     else node.AddInstanceInput(type, connectionType, typeConstraint, newName);
                     serializedObject.Update();
                     EditorUtility.SetDirty(node);
-                    if (hasArrayData) arrayData.InsertArrayElementAtIndex(arraySize);
+                    if (hasArrayData) {
+                        arrayData.InsertArrayElementAtIndex(arrayData.arraySize);
+                    }
                     serializedObject.ApplyModifiedProperties();
                 };
             list.onRemoveCallback =
                 (ReorderableList rl) => {
+
+                    var indexedPorts = node.InstancePorts.Select(x => {
+                        string[] split = x.fieldName.Split(' ');
+                        if (split != null && split.Length == 2 && split[0] == fieldName) {
+                            int i = -1;
+                            if (int.TryParse(split[1], out i)) {
+                                return new { index = i, port = x };
+                            }
+                        }
+                        return new { index = -1, port = (XNode.NodePort) null };
+                    });
+                    instancePorts = indexedPorts.OrderBy(x => x.index).Select(x => x.port).ToList();
+
                     int index = rl.index;
 
                     if (instancePorts.Count > index) {
@@ -407,23 +439,21 @@ namespace XNodeEditor {
 
                     if (hasArrayData) {
                         arrayData.DeleteArrayElementAtIndex(index);
-                        arraySize--;
                         // Error handling. If the following happens too often, file a bug report at https://github.com/Siccity/xNode/issues
-                        if (instancePorts.Count <= arraySize) {
+                        if (instancePorts.Count <= arrayData.arraySize) {
-                            while (instancePorts.Count <= arraySize) {
+                            while (instancePorts.Count <= arrayData.arraySize) {
-                                arrayData.DeleteArrayElementAtIndex(--arraySize);
+                                arrayData.DeleteArrayElementAtIndex(arrayData.arraySize - 1);
                             }
                             UnityEngine.Debug.LogWarning("Array size exceeded instance ports size. Excess items removed.");
                         }
                         serializedObject.ApplyModifiedProperties();
                         serializedObject.Update();
                     }
-
                 };
 
             if (hasArrayData) {
                 int instancePortCount = instancePorts.Count;
-                while (instancePortCount < arraySize) {
+                while (instancePortCount < arrayData.arraySize) {
                     // Add instance port postfixed with an index number
                     string newName = arrayData.name + " 0";
                     int i = 0;
@@ -433,9 +463,8 @@ namespace XNodeEditor {
                     EditorUtility.SetDirty(node);
                     instancePortCount++;
                 }
-                while (arraySize < instancePortCount) {
+                while (arrayData.arraySize < instancePortCount) {
-                    arrayData.InsertArrayElementAtIndex(arraySize);
+                    arrayData.InsertArrayElementAtIndex(arrayData.arraySize);
-                    arraySize++;
                 }
                 serializedObject.ApplyModifiedProperties();
                 serializedObject.Update();

Scripts/Editor/NodeEditorPreferences.cs

@@ -23,6 +23,7 @@ namespace XNodeEditor {
             [SerializeField] private Color32 _gridBgColor = new Color(0.18f, 0.18f, 0.18f);
             public Color32 gridBgColor { get { return _gridBgColor; } set { _gridBgColor = value; _gridTexture = null; } }
 
+            public float zoomOutLimit = 5f;
             public Color32 highlightColor = new Color32(255, 255, 255, 255);
             public bool gridSnap = true;
             public bool autoSave = true;
@@ -113,7 +114,7 @@ namespace XNodeEditor {
             EditorGUILayout.LabelField("Grid", EditorStyles.boldLabel);
             settings.gridSnap = EditorGUILayout.Toggle(new GUIContent("Snap", "Hold CTRL in editor to invert"), settings.gridSnap);
             settings.zoomToMouse = EditorGUILayout.Toggle(new GUIContent("Zoom to Mouse", "Zooms towards mouse position"), settings.zoomToMouse);
-
+            settings.zoomOutLimit = EditorGUILayout.FloatField(new GUIContent("Zoom out Limit", "Upper limit to zoom"), settings.zoomOutLimit);
             settings.gridLineColor = EditorGUILayout.ColorField("Color", settings.gridLineColor);
             settings.gridBgColor = EditorGUILayout.ColorField(" ", settings.gridBgColor);
             if (GUI.changed) {

Scripts/Editor/NodeEditorReflection.cs

@@ -75,7 +75,9 @@ namespace XNodeEditor {
             List<System.Type> types = new List<System.Type>();
             System.Reflection.Assembly[] assemblies = System.AppDomain.CurrentDomain.GetAssemblies();
             foreach (Assembly assembly in assemblies) {
-                types.AddRange(assembly.GetTypes().Where(t => !t.IsAbstract && baseType.IsAssignableFrom(t)).ToArray());
+                try {
+                    types.AddRange(assembly.GetTypes().Where(t => !t.IsAbstract && baseType.IsAssignableFrom(t)).ToArray());
+                } catch(ReflectionTypeLoadException) {}
             }
             return types.ToArray();
         }

Scripts/Editor/NodeEditorWindow.cs

@@ -61,15 +61,38 @@ namespace XNodeEditor {
         public XNode.NodeGraph graph;
         public Vector2 panOffset { get { return _panOffset; } set { _panOffset = value; Repaint(); } }
         private Vector2 _panOffset;
-        public float zoom { get { return _zoom; } set { _zoom = Mathf.Clamp(value, 1f, 5f); Repaint(); } }
+        public float zoom { get { return _zoom; } set { _zoom = Mathf.Clamp(value, 1f, NodeEditorPreferences.GetSettings().zoomOutLimit); Repaint(); } }
         private float _zoom = 1;
 
         void OnFocus() {
             current = this;
-            graphEditor = NodeGraphEditor.GetEditor(graph);
+            ValidateGraphEditor();
             if (graphEditor != null && NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
         }
 
+        [InitializeOnLoadMethod]
+        private static void OnLoad() {
+            Selection.selectionChanged -= OnSelectionChanged;
+            Selection.selectionChanged += OnSelectionChanged;
+        }
+
+        /// <summary> Handle Selection Change events</summary>
+        private static void OnSelectionChanged() {
+            XNode.NodeGraph nodeGraph = Selection.activeObject as XNode.NodeGraph;
+            if (nodeGraph && !AssetDatabase.Contains(nodeGraph)) {
+                Open(nodeGraph);
+            }
+        }
+
+        /// <summary> Make sure the graph editor is assigned and to the right object </summary>
+        private void ValidateGraphEditor() {
+            NodeGraphEditor graphEditor = NodeGraphEditor.GetEditor(graph, this);
+            if (this.graphEditor != graphEditor) {
+                this.graphEditor = graphEditor;
+                graphEditor.OnOpen();
+            }
+        }
+
         /// <summary> Create editor window </summary>
         public static NodeEditorWindow Init() {
             NodeEditorWindow w = CreateInstance<NodeEditorWindow>();
@@ -147,14 +170,21 @@ namespace XNodeEditor {
         public static bool OnOpen(int instanceID, int line) {
             XNode.NodeGraph nodeGraph = EditorUtility.InstanceIDToObject(instanceID) as XNode.NodeGraph;
             if (nodeGraph != null) {
-                NodeEditorWindow w = GetWindow(typeof(NodeEditorWindow), false, "xNode", true) as NodeEditorWindow;
+                Open(nodeGraph);
-                w.wantsMouseMove = true;
-                w.graph = nodeGraph;
                 return true;
             }
             return false;
         }
 
+        /// <summary>Open the provided graph in the NodeEditor</summary>
+        public static void Open(XNode.NodeGraph graph) {
+            if (!graph) return;
+
+            NodeEditorWindow w = GetWindow(typeof(NodeEditorWindow), false, "xNode", true) as NodeEditorWindow;
+            w.wantsMouseMove = true;
+            w.graph = graph;
+        }
+
         /// <summary> Repaint all open NodeEditorWindows. </summary>
         public static void RepaintAll() {
             NodeEditorWindow[] windows = Resources.FindObjectsOfTypeAll<NodeEditorWindow>();

Scripts/Editor/NodeGraphEditor.cs

@@ -8,13 +8,16 @@ namespace XNodeEditor {
     /// <summary> Base class to derive custom Node Graph editors from. Use this to override how graphs are drawn in the editor. </summary>
     [CustomNodeGraphEditor(typeof(XNode.NodeGraph))]
     public class NodeGraphEditor : XNodeEditor.Internal.NodeEditorBase<NodeGraphEditor, NodeGraphEditor.CustomNodeGraphEditorAttribute, XNode.NodeGraph> {
-        /// <summary> The position of the window in screen space. </summary>
+        [Obsolete("Use window.position instead")]
-        public Rect position;
+        public Rect position { get { return window.position; } set { window.position = value; } }
         /// <summary> Are we currently renaming a node? </summary>
         protected bool isRenaming;
 
         public virtual void OnGUI() { }
 
+        /// <summary> Called when opened by NodeEditorWindow </summary>
+        public virtual void OnOpen() { }
+
         public virtual Texture2D GetGridTexture() {
             return NodeEditorPreferences.GetSettings().gridTexture;
         }
@@ -57,6 +60,10 @@ namespace XNodeEditor {
             NodeEditorWindow.AddCustomContextMenuItems(menu, target);
         }
 
+        public virtual Color GetPortColor(XNode.NodePort port) {
+            return GetTypeColor(port.ValueType);
+        }
+
         public virtual Color GetTypeColor(Type type) {
             return NodeEditorPreferences.GetTypeColor(type);
         }

Scripts/Editor/RenamePopup.cs

@@ -0,0 +1,66 @@
+using UnityEditor;
+using UnityEngine;
+
+namespace XNodeEditor {
+	/// <summary> Utility for renaming assets </summary>
+	public class RenamePopup : EditorWindow {
+		public static RenamePopup current { get; private set; }
+		public Object target;
+		public string input;
+
+		private bool firstFrame = true;
+
+		/// <summary> Show a rename popup for an asset at mouse position. Will trigger reimport of the asset on apply.
+		public static RenamePopup Show(Object target, float width = 200) {
+			RenamePopup window = EditorWindow.GetWindow<RenamePopup>(true, "Rename " + target.name, true);
+			if (current != null) current.Close();
+			current = window;
+			window.target = target;
+			window.input = target.name;
+			window.minSize = new Vector2(100, 44);
+			window.position = new Rect(0, 0, width, 44);
+			GUI.FocusControl("ClearAllFocus");
+			window.UpdatePositionToMouse();
+			return window;
+		}
+
+		private void UpdatePositionToMouse() {
+			if (Event.current == null) return;
+			Vector3 mousePoint = GUIUtility.GUIToScreenPoint(Event.current.mousePosition);
+			Rect pos = position;
+			pos.x = mousePoint.x - position.width * 0.5f;
+			pos.y = mousePoint.y - 10;
+			position = pos;
+		}
+
+		private void OnLostFocus() {
+			// Make the popup close on lose focus
+			Close();
+		}
+
+		private void OnGUI() {
+			if (firstFrame) {
+				UpdatePositionToMouse();
+				firstFrame = false;
+			}
+			input = EditorGUILayout.TextField(input);
+			Event e = Event.current;
+			// If input is empty, revert name to default instead
+			if (input == null || input.Trim() == "") {
+				if (GUILayout.Button("Revert to default") || (e.isKey && e.keyCode == KeyCode.Return)) {
+					target.name = UnityEditor.ObjectNames.NicifyVariableName(target.GetType().Name);
+					AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(target));
+					Close();
+				}
+			}
+			// Rename asset to input text
+			else {
+				if (GUILayout.Button("Apply") || (e.isKey && e.keyCode == KeyCode.Return)) {
+					target.name = input;
+					AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(target));
+					Close();
+				}
+			}
+		}
+	}
+}

Scripts/Editor/RenamePopup.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 4ef3ddc25518318469bce838980c64be
+timeCreated: 1552067957
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Scripts/Node.cs

@@ -127,6 +127,8 @@ namespace XNode {
 
         /// <summary> Remove an instance port from the node </summary>
         public void RemoveInstancePort(string fieldName) {
+            NodePort instancePort = GetPort(fieldName);
+            if (instancePort == null) throw new ArgumentException("port " + fieldName + " doesn't exist");
             RemoveInstancePort(GetPort(fieldName));
         }