rename symbol

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

@@ -0,0 +1,55 @@
+using Godot;
+
+namespace SharpIDE.Godot.Features.CodeEditor;
+
+public partial class RenameSymbolDialog : ConfirmationDialog
+{
+    private LineEdit _nameLineEdit = null!;
+
+    public TaskCompletionSource<string?> RenameTaskCompletionSource { get; } = new(TaskCreationOptions.RunContinuationsAsynchronously);
+    public string SymbolName { get; set; } = string.Empty;
+
+    private bool _isNameValid = true;
+
+    public override void _Ready()
+    {
+        _nameLineEdit = GetNode<LineEdit>("%SymbolNameLineEdit");
+        _nameLineEdit.Text = SymbolName;
+        _nameLineEdit.GrabFocus();
+        _nameLineEdit.SelectAll();
+        _nameLineEdit.TextChanged += ValidateNewSymbolName;
+        Confirmed += OnConfirmed;
+    }
+
+    public override void _ExitTree()
+    {
+        RenameTaskCompletionSource.TrySetResult(null);
+    }
+
+    private void ValidateNewSymbolName(string newSymbolNameText)
+    {
+        _isNameValid = true;
+        var newSymbolName = newSymbolNameText.Trim();
+        if (string.IsNullOrEmpty(newSymbolName))
+        {
+            _isNameValid = false;
+        }
+        var textColour = _isNameValid ? new Color(1, 1, 1) : new Color(1, 0, 0);
+        _nameLineEdit.AddThemeColorOverride("font_color", textColour);
+    }
+
+    public override void _Input(InputEvent @event)
+    {
+        if (@event is InputEventKey { Pressed: true, Keycode: Key.Enter })
+        {
+            EmitSignalConfirmed();
+        }
+    }
+
+    private void OnConfirmed()
+    {
+        if (_isNameValid is false) return;
+        var newSymbolName = _nameLineEdit.Text.Trim();
+        RenameTaskCompletionSource.SetResult(newSymbolName);
+    }
+}