diff --git a/Scripts/Editor/NodeEditorWindow.cs b/Scripts/Editor/NodeEditorWindow.cs
index 4fc1136..a751722 100644
--- a/Scripts/Editor/NodeEditorWindow.cs
+++ b/Scripts/Editor/NodeEditorWindow.cs
@@ -77,7 +77,14 @@ namespace XNodeEditor {
         void OnFocus() {
             current = this;
             ValidateGraphEditor();
-            if (graphEditor != null && NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
+            if (graphEditor != null) {
+                graphEditor.OnWindowFocus();
+                if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
+            }
+        }
+        
+        void OnLostFocus() {
+            if (graphEditor != null) graphEditor.OnWindowFocusLost();
         }
 
         [InitializeOnLoadMethod]
diff --git a/Scripts/Editor/NodeGraphEditor.cs b/Scripts/Editor/NodeGraphEditor.cs
index 7551e2f..12b9ba1 100644
--- a/Scripts/Editor/NodeGraphEditor.cs
+++ b/Scripts/Editor/NodeGraphEditor.cs
@@ -17,6 +17,12 @@ namespace XNodeEditor {
 
         /// <summary> Called when opened by NodeEditorWindow </summary>
         public virtual void OnOpen() { }
+        
+        /// <summary> Called when NodeEditorWindow gains focus </summary>
+        public virtual void OnWindowFocus() { }
+
+        /// <summary> Called when NodeEditorWindow loses focus </summary>
+        public virtual void OnWindowFocusLost() { }
 
         public virtual Texture2D GetGridTexture() {
             return NodeEditorPreferences.GetSettings().gridTexture;