Mono.TextEditor.TextEditorData.FixVirtualIndentation C# (CSharp) Method

		public void FixVirtualIndentation (int lineNumber)
		{
			if (!HasIndentationTracker || Options.IndentStyle != IndentStyle.Virtual)
				return;
			var line = Document.GetLine (lineNumber);
			if (line != null && line.Length > 0 && GetIndentationString (lineNumber, line.Length + 1) == Document.GetTextAt (line.Offset, line.Length))
				Remove (line.Offset, line.Length);
		}

        public static void InsertNewLine(TextEditorData data)
        {
            if (!data.CanEditSelection)
            {
                return;
            }

            using (var undo = data.OpenUndoGroup())
            {
                if (data.IsSomethingSelected)
                {
                    data.DeleteSelectedText();
                }
                switch (data.Options.IndentStyle)
                {
                case IndentStyle.None:
                    data.InsertAtCaret(data.EolMarker);
                    break;

                case IndentStyle.Auto:
                    data.EnsureCaretIsNotVirtual();
                    var sb = new StringBuilder(data.EolMarker);
                    sb.Append(data.Document.GetLineIndent(data.Caret.Line));
                    data.InsertAtCaret(sb.ToString());
                    break;

                case IndentStyle.Smart:
                    if (!data.HasIndentationTracker)
                    {
                        goto case IndentStyle.Auto;
                    }
                    NewLineSmartIndent(data);
                    break;

                case IndentStyle.Virtual:
                    if (!data.HasIndentationTracker)
                    {
                        goto case IndentStyle.Auto;
                    }
                    var oldLine   = data.Caret.Line;
                    var curLine   = data.GetLine(oldLine);
                    var indentCol = data.GetVirtualIndentationColumn(data.Caret.Location);
                    if (curLine.Length >= data.Caret.Column)
                    {
                        NewLineSmartIndent(data);
                        data.FixVirtualIndentation();
                        data.FixVirtualIndentation(oldLine);
                        break;
                    }
                    data.Insert(data.Caret.Offset, data.EolMarker);
                    data.FixVirtualIndentation(oldLine);
                    data.Caret.Column = indentCol;
                    break;

                default:
                    throw new ArgumentOutOfRangeException();
                }
            }
        }