First commit

Editor/Views/GraphInspectorView.cs

@@ -0,0 +1,54 @@
+using System.Reflection;
+using UnityEditor;
+using UnityEditor.Experimental.GraphView;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace Misaki.GraphView.Editor
+{
+    public sealed class GraphInspectorView : GraphSubWindow
+    {
+        private const string UIDocumentPath = "Packages/com.misaki.graph-view/Editor/Views/GraphInspectorView.uxml";
+        
+        private readonly Label _header;
+        private readonly VisualElement _inspectorPropertiesContainer; 
+        
+        private Vector2 _startMousePosition; 
+        private Vector2 _startElementPosition;
+        
+        public GraphInspectorView()
+        {
+            style.minWidth = 300;
+            style.minHeight = 500;
+            
+            var uiDocument = AssetDatabase.LoadAssetAtPath<VisualTreeAsset>(UIDocumentPath);
+            var inspectorView = uiDocument.Instantiate();
+            inspectorView.style.flexGrow = 1;
+            
+            _header = inspectorView.Q<Label>("node-name-label");
+            _header.text = string.Empty;
+            _inspectorPropertiesContainer = inspectorView.Q<VisualElement>("inspector-properties-container");
+            
+            Add(inspectorView);
+        }
+
+        private void ClearInspector()
+        {
+            _header.text = string.Empty;
+            _inspectorPropertiesContainer.Clear();
+        }
+        
+        public void OnNodeSelectionChanged(IInspectable selection)
+        {
+            ClearInspector();
+
+            if (selection == null)
+            {
+                return;
+            }
+
+            _header.text = selection.InspectorName ?? "Inspector";
+            _inspectorPropertiesContainer.Add(selection.CreateInspector());
+        }
+    }
+}