add code editor tabs

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

@@ -0,0 +1,61 @@
+using Godot;
+using SharpIDE.Application.Features.SolutionDiscovery;
+using SharpIDE.Application.Features.SolutionDiscovery.VsPersistence;
+
+namespace SharpIDE.Godot.Features.CodeEditor;
+
+public partial class CodeEditorPanel : MarginContainer
+{
+    [Export]
+    public Texture2D CsFileTexture { get; set; } = null!;
+    public SharpIdeSolutionModel Solution { get; set; } = null!;
+    private PackedScene _sharpIdeCodeEditScene = GD.Load<PackedScene>("res://Features/CodeEditor/SharpIdeCodeEdit.tscn");
+    private TabContainer _tabContainer = null!;
+    
+    public override void _Ready()
+    {
+        _tabContainer = GetNode<TabContainer>("TabContainer");
+        _tabContainer.RemoveChild(_tabContainer.GetChild(0)); // Remove the default tab
+        _tabContainer.TabClicked += OnTabClicked;
+        var tabBar = _tabContainer.GetTabBar();
+        tabBar.TabCloseDisplayPolicy = TabBar.CloseButtonDisplayPolicy.ShowAlways;
+        tabBar.TabClosePressed += OnTabClosePressed;
+    }
+
+    private void OnTabClicked(long tab)
+    {
+        var sharpIdeFile = _tabContainer.GetChild<SharpIdeCodeEdit>((int)tab).SharpIdeFile;
+        GodotGlobalEvents.InvokeFileExternallySelected(sharpIdeFile);
+    }
+
+    private void OnTabClosePressed(long tabIndex)
+    {
+        var tab = _tabContainer.GetChild<Control>((int)tabIndex);
+        _tabContainer.RemoveChild(tab);
+        tab.QueueFree();
+    }
+
+    public async Task SetSharpIdeFile(SharpIdeFile file)
+    {
+        var existingTab = _tabContainer.GetChildren().OfType<SharpIdeCodeEdit>().FirstOrDefault(t => t.SharpIdeFile == file);
+        if (existingTab is not null)
+        {
+            var existingTabIndex = existingTab.GetIndex();
+            if (existingTabIndex == _tabContainer.CurrentTab) return;
+            await this.InvokeAsync(() => _tabContainer.CurrentTab = existingTabIndex);
+            return;
+        }
+        var newTab = _sharpIdeCodeEditScene.Instantiate<SharpIdeCodeEdit>();
+        newTab.Solution = Solution;
+        await this.InvokeAsync(() =>
+        {
+            _tabContainer.AddChild(newTab);
+            var newTabIndex = _tabContainer.GetTabCount() - 1;
+            _tabContainer.SetTabIcon(newTabIndex, CsFileTexture);
+            _tabContainer.SetTabTitle(newTabIndex, file.Name);
+            _tabContainer.SetTabTooltip(newTabIndex, file.Path);
+            _tabContainer.CurrentTab = newTabIndex;
+        });
+        await newTab.SetSharpIdeFile(file);
+    }
+}

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

@@ -0,0 +1 @@
+uid://cy7erscaagrtj

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

@@ -1,6 +1,12 @@
-[gd_scene load_steps=2 format=3 uid="uid://c5dlwgcx3ubyp"]
+[gd_scene load_steps=6 format=3 uid="uid://c5dlwgcx3ubyp"]
 
+[ext_resource type="Script" uid="uid://cy7erscaagrtj" path="res://Features/CodeEditor/CodeEditorPanel.cs" id="1_eraxv"]
 [ext_resource type="PackedScene" uid="uid://cinaqbdghcvoi" path="res://Features/CodeEditor/SharpIdeCodeEdit.tscn" id="1_y4okr"]
+[ext_resource type="Texture2D" uid="uid://do0edciarrnp0" path="res://Features/SolutionExplorer/Resources/CsharpFile.svg" id="2_dbtmr"]
+[ext_resource type="StyleBox" uid="uid://bun830pn1vfxw" path="res://Features/CodeEditor/Resources/TabBarTabStyle.tres" id="2_m4iuw"]
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_m4iuw"]
+bg_color = Color(0.11764706, 0.11764706, 0.11764706, 1)
 
 [node name="CodeEditorPanel" type="MarginContainer"]
 anchors_preset = 15
@@ -8,7 +14,19 @@ anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
+script = ExtResource("1_eraxv")
+CsFileTexture = ExtResource("2_dbtmr")
 
-[node name="SharpIdeCodeEdit" parent="." instance=ExtResource("1_y4okr")]
+[node name="TabContainer" type="TabContainer" parent="."]
 layout_mode = 2
-delimiter_strings = Array[String](["\" \"", "' '"])
+theme_override_constants/side_margin = 0
+theme_override_constants/icon_max_width = 22
+theme_override_font_sizes/font_size = 15
+theme_override_styles/tabbar_background = SubResource("StyleBoxFlat_m4iuw")
+theme_override_styles/tab_selected = ExtResource("2_m4iuw")
+current_tab = 0
+drag_to_rearrange_enabled = true
+
+[node name="SharpIdeCodeEdit" parent="TabContainer" instance=ExtResource("1_y4okr")]
+layout_mode = 2
+metadata/_tab_index = 0

src/SharpIDE.Godot/Features/CodeEditor/Resources/TabBarTabStyle.tres

@@ -0,0 +1,11 @@
+[gd_resource type="StyleBoxFlat" format=3 uid="uid://bun830pn1vfxw"]
+
+[resource]
+content_margin_left = 10.0
+content_margin_top = 4.0
+content_margin_right = 10.0
+content_margin_bottom = 4.0
+bg_color = Color(0.1, 0.1, 0.1, 0.6)
+border_width_bottom = 2
+border_color = Color(1, 1, 1, 0.75)
+corner_detail = 1

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

@@ -25,6 +25,7 @@ public partial class SharpIdeCodeEdit : CodeEdit
 	private int _selectionEndCol;
 	
 	public SharpIdeSolutionModel? Solution { get; set; }
+	public SharpIdeFile SharpIdeFile => _currentFile;
 	private SharpIdeFile _currentFile = null!;
 	
 	private CustomHighlighter _syntaxHighlighter = new();

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

@@ -49,6 +49,7 @@ public partial class SolutionExplorerPanel : MarginContainer
 				item.UncollapseTree();
 				_tree.SetSelected(item, 0);
 				_tree.ScrollToItem(item, true);
+				_tree.QueueRedraw();
 			});
 		}
 	}

src/SharpIDE.Godot/IdeRoot.cs

@@ -4,6 +4,7 @@ using SharpIDE.Application.Features.Analysis;
 using SharpIDE.Application.Features.SolutionDiscovery;
 using SharpIDE.Application.Features.SolutionDiscovery.VsPersistence;
 using SharpIDE.Godot.Features.BottomPanel;
+using SharpIDE.Godot.Features.CodeEditor;
 using SharpIDE.Godot.Features.CustomControls;
 using SharpIDE.Godot.Features.Run;
 using SharpIDE.Godot.Features.SolutionExplorer;
@@ -15,7 +16,7 @@ public partial class IdeRoot : Control
 	private Button _openSlnButton = null!;
 	private Button _buildSlnButton = null!;
 	private FileDialog _fileDialog = null!;
-	private SharpIdeCodeEdit _sharpIdeCodeEdit = null!;
+	private CodeEditorPanel _codeEditorPanel = null!;
 	private SolutionExplorerPanel _solutionExplorerPanel = null!;
 	private InvertedVSplitContainer _invertedVSplitContainer = null!;
 	private RunPanel _runPanel = null!;
@@ -32,7 +33,7 @@ public partial class IdeRoot : Control
 		_buildSlnButton = GetNode<Button>("%BuildSlnButton");
 		_runMenuPopup = GetNode<Popup>("%RunMenuPopup");
 		_runMenuButton = GetNode<Button>("%RunMenuButton");
-		_sharpIdeCodeEdit = GetNode<SharpIdeCodeEdit>("%CodeEditorPanel/SharpIdeCodeEdit");
+		_codeEditorPanel = GetNode<CodeEditorPanel>("%CodeEditorPanel");
 		_fileDialog = GetNode<FileDialog>("%OpenSolutionDialog");
 		_solutionExplorerPanel = GetNode<SolutionExplorerPanel>("%SolutionExplorerPanel");
 		_runPanel = GetNode<RunPanel>("%RunPanel");
@@ -64,7 +65,7 @@ public partial class IdeRoot : Control
 
 	private async Task OnSolutionExplorerPanelOnFileSelected(SharpIdeFile file)
 	{
-		await _sharpIdeCodeEdit.SetSharpIdeFile(file);
+		await _codeEditorPanel.SetSharpIdeFile(file);
 	}
 
 	private void OnSlnFileSelected(string path)
@@ -74,7 +75,7 @@ public partial class IdeRoot : Control
 			GD.Print($"Selected: {path}");
 			var solutionModel = await VsPersistenceMapper.GetSolutionModel(path);
 			_solutionExplorerPanel.SolutionModel = solutionModel;
-			_sharpIdeCodeEdit.Solution = solutionModel;
+			_codeEditorPanel.Solution = solutionModel;
 			_bottomPanelManager.Solution = solutionModel;
 			Callable.From(_solutionExplorerPanel.RepopulateTree).CallDeferred();
 			RoslynAnalysis.StartSolutionAnalysis(solutionModel);