WIP

Scripts/Editor/Interfaces.meta

@@ -0,0 +1,8 @@
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Scripts/Editor/Interfaces/ICustomEditor.cs

@@ -0,0 +1,14 @@
+using UnityEditor;
+using UnityEngine;
+
+namespace XNodeEditor {
+	/// <summary> 
+	/// Workaround since c# doesn't support nested interfaces. 
+	/// 
+	/// Used with INodeEditor and INodeGraphEditor. 
+	/// </summary>
+	public interface ICustomEditor<T> {
+		T Target { get; }
+		SerializedObject SerializedObject { get; }
+	}
+}

Scripts/Editor/Interfaces/ICustomEditor.cs.meta

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Scripts/Editor/Interfaces/INodeEditor.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEngine;
+using XNode;
+
+namespace XNodeEditor {
+	public interface INodeGraphEditor {
+		INodeGraph target { get; }
+		void OnGUI();
+		void OnOpen();
+		Texture2D GetGridTexture();
+		Texture2D GetSecondaryGridTexture();
+		/// <summary> Return default settings for this graph type. This is the settings the user will load if no previous settings have been saved. </summary>
+		NodeEditorPreferences.Settings GetDefaultPreferences();
+		/// <summary> Returns context node menu path. Null or empty strings for hidden nodes. </summary>
+		string GetNodeMenuName(Type type);
+		/// <summary> Add items for the context menu when right-clicking this node. Override to add custom menu items. </summary>
+		void AddContextMenuItems(GenericMenu menu);
+		Color GetPortColor(XNode.NodePort port);
+		Color GetTypeColor(Type type);
+		/// <summary> Create a node and save it in the graph asset </summary>
+		XNode.INode CreateNode(Type type, Vector2 position);
+		/// <summary> Creates a copy of the original node in the graph </summary>
+		XNode.INode CopyNode(XNode.INode original);
+		/// <summary> Safely remove a node and all its connections. </summary>
+		void RemoveNode(XNode.INode node);
+	}
+
+	[AttributeUsage(AttributeTargets.Class)]
+	public class CustomNodeGraphEditorAttribute : Attribute,
+		XNodeEditor.Internal.INodeEditorAttrib {
+			private Type inspectedType;
+			public string editorPrefsKey;
+			/// <summary> Tells a NodeGraphEditor which Graph type it is an editor for </summary>
+			/// <param name="inspectedType">Type that this editor can edit</param>
+			/// <param name="editorPrefsKey">Define unique key for unique layout settings instance</param>
+			public CustomNodeGraphEditorAttribute(Type inspectedType, string editorPrefsKey = "xNode.Settings") {
+				this.inspectedType = inspectedType;
+				this.editorPrefsKey = editorPrefsKey;
+			}
+
+			public Type GetInspectedType() {
+				return inspectedType;
+			}
+		}
+}

Scripts/Editor/Interfaces/INodeEditor.cs.meta

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Scripts/Editor/Interfaces/INodeGraphEditor.cs

@@ -0,0 +1,16 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class INodeGraphEditor : MonoBehaviour {
+
+	// Use this for initialization
+	void Start () {
+		
+	}
+	
+	// Update is called once per frame
+	void Update () {
+		
+	}
+}

Scripts/Editor/Interfaces/INodeGraphEditor.cs.meta

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Scripts/Editor/NodeEditorBase.cs

@@ -9,13 +9,13 @@ namespace XNodeEditor.Internal {
 	/// <summary> Handles caching of custom editor classes and their target types. Accessible with GetEditor(Type type) </summary>
 	/// <typeparam name="T">Editor Type. Should be the type of the deriving script itself (eg. NodeEditor) </typeparam>
 	/// <typeparam name="A">Attribute Type. The attribute used to connect with the runtime type (eg. CustomNodeEditorAttribute) </typeparam>
-	/// <typeparam name="K">Runtime Type. The Object this can be an editor for (eg. Node) </typeparam>
-	public abstract class NodeEditorBase<T, A, K> : Editor where A : Attribute, INodeEditorAttrib where T : NodeEditorBase<T, A, K> where K : UnityEngine.Object {
+	/// <typeparam name="K">Runtime Type. The Object this can be an editor for (eg. INode ) </typeparam>
+	public abstract class NodeEditorBase<T, A, K> : Editor where T : NodeEditorBase<T, A, K>, ICustomEditor<K> where A : Attribute, INodeEditorAttrib where K : class {
 		/// <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 new K target { get { return _target == base.target ? _target : _target = (K) base.target; } set { base.target = value; } }
+		public new K target { get { return _target as UnityEngine.Object == base.target ? _target : _target = base.target as K; } set { base.target = value as UnityEngine.Object; } }
 		private K _target;
 
 		public static T GetEditor<Q>(Q target, NodeEditorWindow window) where Q : class {

Scripts/Editor/NodeGraphEditor.cs

@@ -3,13 +3,21 @@ using System.Collections.Generic;
 using System.Linq;
 using UnityEditor;
 using UnityEngine;
+using XNode;
 
 namespace XNodeEditor {
     /// <summary> Base class to derive custom NodeGraph 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> {
+    public class NodeGraphEditor : XNodeEditor.Internal.NodeEditorBase<NodeGraphEditor, NodeGraphEditor.CustomNodeGraphEditorAttribute, XNode.INodeGraph>, ICustomEditor<XNode.INodeGraph>, INodeGraphEditor {
+
+        INodeGraph INodeGraphEditor.target { get { return base.target; } }
+
         [Obsolete("Use window.position instead")]
         public Rect position { get { return window.position; } set { window.position = value; } }
+
+        INodeGraph ICustomEditor<INodeGraph>.Target { get { return target as INodeGraph; } }
+        SerializedObject ICustomEditor<INodeGraph>.SerializedObject { get { return serializedObject; } }
+
         /// <summary> Are we currently renaming a node? </summary>
         protected bool isRenaming;
 
@@ -69,28 +77,29 @@ namespace XNodeEditor {
         }
 
         /// <summary> Create a node and save it in the graph asset </summary>
-        public virtual void CreateNode(Type type, Vector2 position) {
-            XNode.Node node = target.AddNode(type);
-            node.position = position;
-            if (string.IsNullOrEmpty(node.name)) node.name = UnityEditor.ObjectNames.NicifyVariableName(type.Name);
-            AssetDatabase.AddObjectToAsset(node, target);
+        public virtual XNode.INode CreateNode(Type type, Vector2 position) {
+            XNode.INode node = ((INodeGraph) target).AddNode(type);
+            node.Position = position;
+            if (string.IsNullOrEmpty(node.Name)) node.Name = UnityEditor.ObjectNames.NicifyVariableName(type.Name);
+            if (node is ScriptableObject) AssetDatabase.AddObjectToAsset(node as ScriptableObject, target);
             if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
             NodeEditorWindow.RepaintAll();
+            return node;
         }
 
         /// <summary> Creates a copy of the original node in the graph </summary>
-        public XNode.INode CopyNode(XNode.Node original) {
-            XNode.Node node = target.CopyNode( original);
-            node.name = original.name;
-            AssetDatabase.AddObjectToAsset(node, target);
+        public virtual XNode.INode CopyNode(XNode.INode original) {
+            XNode.INode node = ((INodeGraph) target).CopyNode(original);
+            node.Name = original.Name;
+            if (node is ScriptableObject) AssetDatabase.AddObjectToAsset(node as ScriptableObject, target);
             if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
             return node;
         }
 
         /// <summary> Safely remove a node and all its connections. </summary>
-        public void RemoveNode(XNode.Node node) {
-            UnityEngine.Object.DestroyImmediate(node, true);
-            target.RemoveNode(node);
+        public void RemoveNode(XNode.INode node) {
+            UnityEngine.Object.DestroyImmediate(node as UnityEngine.Object, true);
+            ((INodeGraph) target).RemoveNode(node);
             if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
         }