1.hi!

TNode/Attribute/BlackboardSection.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using JetBrains.Annotations;
+
+namespace TNode.Attribute{
+    
+    /// <summary>
+    /// Use this attribute to declare a blackboard section ,a blackboard section is a group of  variables with same types
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Field, AllowMultiple = false, Inherited = false)]
+    [BaseTypeRequired(typeof(List<>))]
+    
+    public class BlackboardSection:System.Attribute{
+        
+    }
+}

TNode/Attribute/BlackboardSection.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 773d073006dc4dd488e18b38165efd5a
+timeCreated: 1656942977

TNode/Editor/BaseViews/DataGraphView.cs

@@ -111,7 +111,7 @@ namespace TNode.Editor.BaseViews{
         private T _data;
         private bool _isInspectorOn;
         
-        private SearchWindowProvider _searchWindowProvider;
+        private NodeSearchWindowProvider _nodeSearchWindowProvider;
         private NodeInspector _nodeInspector;
         public GraphEditor<T> Owner;
         private Dictionary<string,Node> _nodeDict = new();
@@ -158,7 +158,7 @@ namespace TNode.Editor.BaseViews{
                 evt.menu.AppendAction("Create Node", dma => {
                     var dmaPos = dma.eventInfo.mousePosition+editorPosition;
                     SearchWindowContext searchWindowContext = new SearchWindowContext(dmaPos,200,200);
-                    var searchWindow = ScriptableObject.CreateInstance<SearchWindowProvider>();
+                    var searchWindow = ScriptableObject.CreateInstance<NodeSearchWindowProvider>();
                     searchWindow.Setup(typeof(T),this,Owner);
                     SearchWindow.Open(searchWindowContext, searchWindow);
                 });
@@ -234,6 +234,15 @@ namespace TNode.Editor.BaseViews{
 
         public void CreateBlackBoard(){
             var blackboard = new Blackboard();
+            //Blackboard add "Add Node" button
+            blackboard.Add(new BlackboardSection(){
+                title = "Hello World",
+            });
+            blackboard.addItemRequested = (item) => {
+                //Create a sub window for the blackboard to show the selection
+                var subWindow = ScriptableObject.CreateInstance<NodeSearchWindowProvider>();
+            };
+            
             //Set black board to left side of the view
             blackboard.SetPosition(new Rect(0,0,200,600));
             this.Add(blackboard);

TNode/Editor/GraphBlackboard.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 476d14ab24734294b206f16006438e60
+timeCreated: 1656941713

TNode/Editor/GraphBlackboard/GraphBlackboard.cs

@@ -0,0 +1,10 @@
+using UnityEditor.Experimental.GraphView;
+
+namespace TNode.Editor.GraphBlackboard{
+    /// <summary>
+    /// Implement this class to create graph black board for specified graph
+    /// </summary>
+    public class GraphBlackboard:Blackboard{
+        
+    }
+}

TNode/Editor/GraphBlackboard/GraphBlackboard.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 285d836db7e04e2f989069277fd1853a
+timeCreated: 1656941728

TNode/Editor/Search.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 4fe6a069e0cc45158b4749dbdb7fd399
+timeCreated: 1656942698

TNode/Editor/Search/BlackboardSearchWindowProvider.cs

@@ -0,0 +1,5 @@
+namespace TNode.Editor{
+    public class BlackboardSearchWindowProvider{
+        
+    }
+}

TNode/Editor/Search/BlackboardSearchWindowProvider.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 73c77be1f9364a0199d95eea7e7c0101
+timeCreated: 1656942712

TNode/Editor/Search/NodeSearchWindowProvider.cs

@@ -12,7 +12,7 @@ using UnityEngine;
 using UnityEngine.UIElements;
 
 namespace TNode.Editor{
-    public class SearchWindowProvider:ScriptableObject,ISearchWindowProvider{
+    public class NodeSearchWindowProvider:ScriptableObject,ISearchWindowProvider{
         private Type _graphType;
         private GraphView _graphView;
         private EditorWindow _editor;
@@ -58,7 +58,7 @@ namespace TNode.Editor{
             return false;
         }
         
-        public SearchWindowProvider(){
+        public NodeSearchWindowProvider(){
         }
     }
 }