update:fix bug with BlackboardDragNode.cs

Samples/Editor/HelloEditor.asset

@@ -1,17 +0,0 @@
-%YAML 1.1
-%TAG !u! tag:unity3d.com,2011:
---- !u!114 &11400000
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 0}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: 99ad0af56b40495cb6bd6165e652266c, type: 3}
-  m_Name: HelloEditor
-  m_EditorClassIdentifier: 
-  graphElementsData: []
-  graphImplType: 0
-  autoUpdate: 0

Samples/Editor/HelloEditor.asset.meta

@@ -1,8 +0,0 @@
-fileFormatVersion: 2
-guid: 060ae44fcac9b534f9bdca3c3e5f1484
-NativeFormatImporter:
-  externalObjects: {}
-  mainObjectFileID: 11400000
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

Samples/Editor/HelloEditor.cs.meta

@@ -5,8 +5,8 @@ MonoImporter:
   serializedVersion: 2
   defaultReferences:
   - m_ViewDataDictionary: {instanceID: 0}
-  - mVisualTreeAsset: {fileID: 9197481963319205126, guid: b67f6dcbe2361b649ad2b7845207321b, type: 3}
+  - mVisualTreeAsset: {instanceID: 0}
-  - graphEditorData: {fileID: 11400000, guid: 060ae44fcac9b534f9bdca3c3e5f1484, type: 2}
+  - graphEditorData: {fileID: 11400000, guid: 26c77e8bb72228e4d81789ee852ada41, type: 2}
   executionOrder: 0
   icon: {instanceID: 0}
   userData: 

Samples/New HelloGraph.asset

@@ -18,26 +18,26 @@ MonoBehaviour:
   blackboardData:
     id: 1
   sceneReference: 
-  editorModels:
+  editorModels: []
-  - id: 2
-  - id: 3
   graphViewModel:
-    id: 4
+    id: 2
   references:
     version: 1
     00000000:
-      type: {class: AddNode, ns: Samples, asm: Assembly-CSharp}
+      type: {class: BlackboardDragNode, ns: TNodeCore.Runtime.Models, asm: TNodeCore}
       data:
         positionInView:
           serializedVersion: 2
-          x: 479
+          x: 54.89991
-          y: 295
+          y: 86.95003
           width: 0
           height: 0
-        id: b2634d94-1655-4674-9b1c-b1c2e9ab3f6b
+        id: 2c26caec-abd2-4034-b68e-28a2843d347e
-        nodeName: AddNode
+        nodeName: 
         entryPoint: 0
         isTest: 0
+        blackDragData: HelloGameObject
+        isListElement: 0
     00000001:
       type: {class: HelloBlackboard, ns: TNode.Samples, asm: Assembly-CSharp}
       data:
@@ -53,33 +53,7 @@ MonoBehaviour:
         V3S: []
         V2S: []
     00000002:
-      type: {class: PlacematModel, ns: TNode.TNodeCore.Editor.Models, asm: NewAssembly}
+      type: {class: GraphViewModel, ns: TNode.TNodeCore.Editor.Models, asm: TNodeCore}
-      data:
-        positionInView:
-          serializedVersion: 2
-          x: 443
-          y: 177
-          width: 500
-          height: 500
-        id: 
-        hostModels: []
-        zOrder: 0
-        title: Title
-    00000003:
-      type: {class: Comment, ns: TNode.TNodeCore.Editor.Models, asm: NewAssembly}
-      data:
-        positionInView:
-          serializedVersion: 2
-          x: 0
-          y: 0
-          width: 0
-          height: 0
-        id: 
-        CommentedModel:
-          id: 0
-        CommentText: ddd
-    00000004:
-      type: {class: GraphViewModel, ns: TNode.TNodeCore.Editor.Models, asm: NewAssembly}
       data:
         positionInView:
           serializedVersion: 2
@@ -89,5 +63,5 @@ MonoBehaviour:
           height: 0
         id: 
         persistScale: 1
-        persistOffset: {x: 0, y: -5}
+        persistOffset: {x: 441, y: 254}
-        isBlackboardOn: 0
+        isBlackboardOn: 1

TNodeCore/Runtime/Attributes/Ports/PortAttribute.cs

@@ -14,9 +14,22 @@ namespace TNodeCore.Runtime.Attributes.Ports{
     }
 
     public enum TypeHandling{
+        /// <summary>
+        /// What's declared in the field is what port type is
+        /// </summary>
         Declared,
+        /// <summary>
+        /// What's the real type of the watched field is what port type is
+        /// </summary>
         Implemented,
-        Specified
+        /// <summary>
+        /// Specify the port type
+        /// </summary>
+        Specified,
+        /// <summary>
+        /// Search  the node's path to find the proper type
+        /// </summary>
+        Path
     }
     [MeansImplicitUse]
     [AttributeUsage(AttributeTargets.Property, AllowMultiple = true)]
@@ -25,6 +38,7 @@ namespace TNodeCore.Runtime.Attributes.Ports{
         public readonly PortNameHandling NameHandling;
         public Type HandledType;
         public bool Multiple = true;
+        public string TypePath;
       
         public TypeHandling TypeHandling{ get; set; }
         public PortAttribute(string name,PortNameHandling nameHandling=PortNameHandling.Auto,TypeHandling typeHandling=TypeHandling.Declared){

TNodeCore/Runtime/Models/BlackboardDragNode.cs

@@ -2,7 +2,6 @@
 using TNodeCore.Runtime.Attributes;
 using TNodeCore.Runtime.Attributes.Ports;
 using TNodeCore.Runtime.RuntimeCache;
-using UnityEngine;
 
 namespace TNodeCore.Runtime.Models{
     [Serializable]
@@ -17,13 +16,15 @@ namespace TNodeCore.Runtime.Models{
                 }
             }
         }
-
-        public string blackDragData;
         /// <summary>
-        /// it's very hacky way to get blackboard data ,even when the value is null,type info is not null!
+        /// 
         /// </summary>
+        public Type BlackboardDragType{ get; set; }
+
+        public string blackDragData;
+        
         /// TODO : The type handling in a safer way in the future
-        [Output("",PortNameHandling.MemberType,TypeHandling.Implemented)]
+        [Output("",PortNameHandling.MemberType,TypeHandling.Path,TypePath = "BlackboardDragType")]
         public object Value{
             get{
                 if (!isListElement){
@@ -32,7 +33,6 @@ namespace TNodeCore.Runtime.Models{
                 else{
                     var split = BlackDragData.Split('.');
                     var index = int.Parse(split[1]);
-              
                     return BlackboardData.GetListValue(split[0],index);
                 }
                
@@ -40,9 +40,5 @@ namespace TNodeCore.Runtime.Models{
         }
 
         public bool isListElement=false;
-        public BlackboardDragNode(){
-            
-        }
-        
     }
 }

TNodeGraphViewImpl/Editor/NodeGraphView/DataGraphView.cs

@@ -373,6 +373,8 @@ namespace TNodeGraphViewImpl.Editor.NodeGraphView{
                         //Make a constructor of  BlackboardDragNode<field.PropertyType > by reflection
                         var dragNodeData = NodeCreator.InstantiateNodeData<BlackboardDragNode>();
                         dragNodeData.BlackboardData = GetBlackboardData();
+                        dragNodeData.BlackboardDragType = entry.propertyType;
+                        Debug.Log(entry.propertyType);
                         dragNodeData.BlackDragData = entry.propertyPath;
                         AddTNode(dragNodeData,new Rect(realPos,new Vector2(200,200)));
                     }

TNodeGraphViewImpl/Editor/NodeViews/NodeView.cs

@@ -124,6 +124,26 @@ namespace TNodeGraphViewImpl.Editor.NodeViews{
                     throw new ArgumentOutOfRangeException();
             }
         }
+
+        private Type GetDataType(string path){
+            //Access the member by given path
+            var memberInfo =  _data.GetType().GetMember(path).FirstOrDefault();
+       
+            if (memberInfo == null){
+                return null;
+            }
+            if (memberInfo is PropertyInfo propertyInfo){
+             
+                return propertyInfo.GetValue(_data) as Type;
+            }
+        
+            //Check if the member is a field
+            if (memberInfo is FieldInfo fieldInfo){
+                return _data.GetType().GetField(path)?.GetValue(_data) as Type;
+            }
+      
+            throw new Exception("Member is not a property or field");
+        }
         protected virtual Type BuildPortType(PortAttribute portAttribute,PropertyInfo propertyInfo){
             switch (portAttribute.TypeHandling){
                 case TypeHandling.Declared :
@@ -132,6 +152,8 @@ namespace TNodeGraphViewImpl.Editor.NodeViews{
                     return propertyInfo.GetValue(_data)?.GetType();
                 case TypeHandling.Specified:
                     return portAttribute.HandledType??typeof(object);
+                case TypeHandling.Path:
+                    return GetDataType(portAttribute.TypePath);
                 default:
                     throw new ArgumentOutOfRangeException();
             }