set selected tab

src/SharpIDE.Godot/Features/CodeEditor/CodeEditorPanel.cs

@@ -34,13 +34,15 @@ public partial class CodeEditorPanel : MarginContainer
 
     public override void _ExitTree()
     {
+        var selectedTabIndex = _tabContainer.CurrentTab;
         var thisSolution = Singletons.AppState.RecentSlns.Single(s => s.FilePath == Solution.FilePath);
         thisSolution.IdeSolutionState.OpenTabs = _tabContainer.GetChildren().OfType<SharpIdeCodeEdit>()
-            .Select(t => new OpenTab
+            .Select((t, index) => new OpenTab
             {
                 FilePath = t.SharpIdeFile.Path,
                 CaretLine = t.GetCaretLine(),
-                CaretColumn = t.GetCaretColumn()
+                CaretColumn = t.GetCaretColumn(),
+                IsSelected = index == selectedTabIndex
             })
             .ToList();
     }
@@ -103,8 +105,7 @@ public partial class CodeEditorPanel : MarginContainer
             }).AddTo(newTab); // needs to be on ui thread
         });
         
-        await newTab.SetSharpIdeFile(file);
+        await newTab.SetSharpIdeFile(file, fileLinePosition);
-        if (fileLinePosition is not null) await this.InvokeAsync(() => newTab.SetFileLinePosition(fileLinePosition.Value));
     }
     
     private async Task OnDebuggerExecutionStopped(ExecutionStopInfo executionStopInfo)

src/SharpIDE.Godot/Features/CodeEditor/SharpIdeCodeEdit.cs

@@ -334,7 +334,7 @@ public partial class SharpIdeCodeEdit : CodeEdit
 	}
 
 	// TODO: Ensure not running on UI thread
-	public async Task SetSharpIdeFile(SharpIdeFile file)
+	public async Task SetSharpIdeFile(SharpIdeFile file, SharpIdeFileLinePosition? fileLinePosition = null)
 	{
 		await Task.CompletedTask.ConfigureAwait(ConfigureAwaitOptions.ForceYielding); // get off the UI thread
 		_currentFile = file;
@@ -345,11 +345,13 @@ public partial class SharpIdeCodeEdit : CodeEdit
 		var razorSyntaxHighlighting = _roslynAnalysis.GetRazorDocumentSyntaxHighlighting(_currentFile);
 		var diagnostics = _roslynAnalysis.GetDocumentDiagnostics(_currentFile);
 		var projectDiagnosticsForFile = _roslynAnalysis.GetProjectDiagnosticsForFile(_currentFile);
+		await readFileTask;
 		var setTextTask = this.InvokeAsync(async () =>
 		{
 			_fileChangingSuppressBreakpointToggleEvent = true;
 			SetText(await readFileTask);
 			_fileChangingSuppressBreakpointToggleEvent = false;
+			if (fileLinePosition is not null) SetFileLinePosition(fileLinePosition.Value);
 		});
 		await Task.WhenAll(syntaxHighlighting, razorSyntaxHighlighting, setTextTask); // Text must be set before setting syntax highlighting
 		await this.InvokeAsync(async () => SetSyntaxHighlightingModel(await syntaxHighlighting, await razorSyntaxHighlighting));

src/SharpIDE.Godot/Features/IdeSettings/IdeSolutionState.cs

@@ -10,4 +10,5 @@ public class OpenTab
     public required string FilePath { get; set; }
     public required int CaretLine { get; set; }
     public required int CaretColumn { get; set; }
+    public required bool IsSelected { get; set; }
 }

src/SharpIDE.Godot/IdeRoot.cs

@@ -153,14 +153,19 @@ public partial class IdeRoot : Control
 			
 			var previousTabs = Singletons.AppState.RecentSlns.Single(s => s.FilePath == solutionModel.FilePath).IdeSolutionState.OpenTabs;
 			var filesToOpen = previousTabs
-				.Select(s => (solutionModel.AllFiles.Single(f => f.Path == s.FilePath), new SharpIdeFileLinePosition(s.CaretLine, s.CaretColumn)))
+				.Select(s => (solutionModel.AllFiles.Single(f => f.Path == s.FilePath), new SharpIdeFileLinePosition(s.CaretLine, s.CaretColumn), s.IsSelected))
 				.ToList();
 			await this.InvokeDeferredAsync(async () =>
 			{
-				foreach (var (file, linePosition) in filesToOpen)
+				// Preserves order of tabs
+				foreach (var (file, linePosition, isSelected) in filesToOpen)
 				{
 					GodotGlobalEvents.Instance.FileExternallySelected.InvokeParallelFireAndForget(file, linePosition);
+					await Task.Delay(10).ConfigureAwait(false); // TODO: Do this properly - use InvokeParallelAsync, and fix FileExternallySelected waiting on syntax highlighting etc before returning
 				}
+				// Select the selected tab
+				var selectedFile = filesToOpen.SingleOrDefault(f => f.IsSelected);
+				if (selectedFile.Item1 is not null) GodotGlobalEvents.Instance.FileExternallySelected.InvokeParallelFireAndForget(selectedFile.Item1, selectedFile.Item2);
 			});
 				
 			var tasks = solutionModel.AllProjects.Select(p => p.MsBuildEvaluationProjectTask).ToList();