private string HighlightPath()

in Tools/UIRecorder/UIRecorder/MainWindow.xaml.cs [491:541]
42 lines of code
8 McCabe index (conditional complexity)

        private string HighlightPath(int nNodeCount, bool bHighlight)
        {
            var tr = new TextRange(rtbXPath.Document.ContentStart, rtbXPath.Document.ContentEnd);

            string pathText = tr.Text;
            if (string.IsNullOrEmpty(pathText))
            {
                return null;
            }

            string xpath = pathText;
            int nIndex1 = 0;
            int nIndex2 = 0;

            for (int node = 0; node < nNodeCount; node++)
            {
                int Len1 = xpath.Length;
                xpath = RemoveFirstNode(xpath);

                nIndex1 = nIndex2 + 1;
                nIndex2 += (Len1 - xpath.Length);
            }

            if (nIndex2 < nIndex1)
            {
                return null;
            }

            if (bHighlight == true)
            {
                tr.ClearAllProperties();

                if (RootSessionPath != null && pathText.Contains(RootSessionPath) == true)
                {
                    var posRoot1 = rtbXPath.Document.ContentStart.GetPositionAtOffset(1, LogicalDirection.Forward);
                    var posRoot2 = rtbXPath.Document.ContentStart.GetPositionAtOffset(RootSessionPath.Length + 2, LogicalDirection.Forward);
                    var trRoot = new TextRange(posRoot1, posRoot2);
                    trRoot.ApplyPropertyValue(TextElement.BackgroundProperty, Brushes.LightGray);
                }

                if (nNodeCount > 0)
                {
                    var pos1 = rtbXPath.Document.ContentStart.GetPositionAtOffset(nIndex1 + 1, LogicalDirection.Forward);
                    var pos2 = rtbXPath.Document.ContentStart.GetPositionAtOffset(nIndex2 + 2, LogicalDirection.Forward);
                    tr = new TextRange(pos1, pos2);
                    tr.ApplyPropertyValue(TextElement.BackgroundProperty, Brushes.LightBlue);
                }
            }

            return pathText.Substring(nIndex1, nIndex2 - nIndex1); //excluding leading quote
        }