fix objectdb leaks on exit

src/SharpIDE.Godot/Features/Problems/DiagnosticMetadataContainer.cs

@@ -4,12 +4,17 @@ using SharpIDE.Application.Features.SolutionDiscovery.VsPersistence;
 
 namespace SharpIDE.Godot.Features.Problems;
 
-public partial class DiagnosticMetadataContainer(Diagnostic diagnostic) : GodotObject
+// public partial class GenericContainer<T>(T item) : RefCounted
+// {
+//     public T Item { get; } = item;
+// }
+
+public partial class DiagnosticMetadataContainer(Diagnostic diagnostic) : RefCounted
 {
     public Diagnostic Diagnostic { get; } = diagnostic;
 }
 
-public partial class ProjectContainer(SharpIdeProjectModel project) : GodotObject
+public partial class ProjectContainer(SharpIdeProjectModel project) : RefCounted
 {
     public SharpIdeProjectModel Project { get; } = project;
 }

src/SharpIDE.Godot/Features/Problems/ProblemsPanel.cs

@@ -35,7 +35,7 @@ public partial class ProblemsPanel : Control
             .Subscribe(s =>
             {
                 GD.Print($"ProblemsPanel: Solution changed to {s?.Name ?? "null"}");
-                _projects.Clear();
+                _projects.RemoveRange(_projects);
                 _projects.AddRange(s!.AllProjects);
             }).AddTo(this);
         BindToTree(_projects);

src/SharpIDE.Godot/Features/SolutionExplorer/SharpIdeFileGodotContainer.cs

@@ -3,7 +3,7 @@ using SharpIDE.Application.Features.SolutionDiscovery;
 
 namespace SharpIDE.Godot.Features.SolutionExplorer;
 
-public partial class SharpIdeFileGodotContainer : GodotObject
+public partial class SharpIdeFileGodotContainer : RefCounted
 {
     public required SharpIdeFile File { get; init; }
 }

src/SharpIDE.Godot/Features/SolutionExplorer/SolutionExplorerPanel.cs

@@ -161,13 +161,6 @@ public partial class SolutionExplorerPanel : MarginContainer
 		fileItem.SetText(0, file.Name);
 		fileItem.SetIcon(0, CsharpFileIcon);
 		var container = new SharpIdeFileGodotContainer { File = file };
-		// TODO: Handle ObjectDB instances leaked at exit
 		fileItem.SetMetadata(0, container);
 	}
-	
-
-	// Called every frame. 'delta' is the elapsed time since the previous frame.
-	public override void _Process(double delta)
-	{
-	}
-}
+}

src/SharpIDE.Godot/IdeWindow.cs

@@ -1,7 +1,7 @@
-using Ardalis.GuardClauses;
 using Godot;
 using Microsoft.Build.Locator;
 using Microsoft.Extensions.Hosting;
+using SharpIDE.Application.Features.Events;
 using SharpIDE.Godot.Features.SlnPicker;
 
 namespace SharpIDE.Godot;
@@ -26,6 +26,16 @@ public partial class IdeWindow : Control
         PickSolution(true);
     }
     
+    // public override void _ExitTree()
+    // {
+    //     GodotGlobalEvents.Instance = null!;
+    //     GlobalEvents.Instance = null!;
+    //     GC.Collect();
+    //     GC.WaitForPendingFinalizers();
+    //     GC.Collect();
+    //     PrintOrphanNodes();
+    // }
+    
     public void PickSolution(bool fullscreen = false)
     {
         if (_slnPicker is not null) throw new InvalidOperationException("Solution picker is already active");