Added code to close the scene graph window when the scene is closed

Author: alelievr

Assets/com.alelievr.NodeGraphProcessor/Editor/BaseGraphWindow.cs

@@ -1,13 +1,10 @@
-using System.Collections;
-using System.Collections.Generic;
-using System.Linq;
+using System.Linq;
 using System;
 using UnityEngine;
 using UnityEditor;
-using UnityEngine.Assertions;
 using UnityEngine.UIElements;
-using UnityEditor.UIElements;
-using UnityEditor.Experimental.GraphView;
+using UnityEngine.SceneManagement;
+using UnityEditor.SceneManagement;
 
 namespace GraphProcessor
 {
@@ -123,6 +120,27 @@ public void InitializeGraph(BaseGraph graph)
 			graphView.Initialize(graph);
 
 			InitializeGraphView(graphView);
+
+			// TOOD: onSceneLinked...
+
+			if (graph.IsLinkedToScene())
+				LinkGraphWindowToScene(graph.GetLinkedScene());
+			else
+				graph.onSceneLinked += LinkGraphWindowToScene;
+		}
+
+		void LinkGraphWindowToScene(Scene scene)
+		{
+			EditorSceneManager.sceneClosed += CloseWindowWhenSceneIsClosed;
+
+			void CloseWindowWhenSceneIsClosed(Scene closedScene)
+			{
+				if (scene == closedScene)
+				{
+					Close();
+					EditorSceneManager.sceneClosed -= CloseWindowWhenSceneIsClosed;
+				}
+			}
 		}
 
 		public virtual void OnGraphDeleted()

Assets/com.alelievr.NodeGraphProcessor/Runtime/Graph/BaseGraph.cs

@@ -137,6 +137,12 @@ public class BaseGraph : ScriptableObject, ISerializationCallbackReceiver
 		public event Action						onExposedParameterListChanged;
 		public event Action< ExposedParameter >	onExposedParameterModified;
 		public event Action< ExposedParameter >	onExposedParameterValueChanged;
+
+		/// <summary>
+		/// Triggered when the graph is linked to an active scene.
+		/// </summary>
+		public event Action< Scene >			onSceneLinked;
+
 		/// <summary>
 		/// Triggered when the graph is enabled
 		/// </summary>
@@ -685,10 +691,21 @@ public bool SetParameterValue(string name, object value)
 		/// </summary>
 		/// <param name="scene">Target scene to link</param>
 		public void LinkToScene(Scene scene)
-			=> linkedScene = scene;
-		
+		{
+			linkedScene = scene;
+			onSceneLinked?.Invoke(scene);
+		}
+
+		/// <summary>
+		/// Return true when the graph is linked to a scene, false otherwise.
+		/// </summary>
 		public bool IsLinkedToScene() => linkedScene.IsValid();
 
+		/// <summary>
+		/// Get the linked scene. If there is no linked scene, it returns an invalid scene
+		/// </summary>
+		public Scene GetLinkedScene() => linkedScene;
+
 		HashSet<BaseNode> infiniteLoopTracker = new HashSet<BaseNode>();
 		int UpdateComputeOrderBreadthFirst(int depth, BaseNode node)
 		{