/// <summary>
        /// Create OpenDoPE parts, including optionally, question part.
        /// </summary>
        /// <param name="needQuestionsPart"></param>
        public void process(Microsoft.Office.Interop.Word.Document document, bool needQuestionsPart)
        {
            Model model = Model.ModelFactory(document);

            // Button shouldn't be available if this exists,
            // but ..
            if (model.conditionsPart == null)
            {
                conditions conditions = new conditions();
                string conditionsXml = conditions.Serialize();
                model.conditionsPart = addCustomXmlPart(document, conditionsXml);
            }

            if (model.componentsPart == null)
            {
                components components = new components();
                string componentsXml = components.Serialize();
                model.componentsPart = addCustomXmlPart(document, componentsXml);
            }

            // TODO 2013 12 if there is an existing questions part or answers part
            // I suspect we just want to keep it, rather than overwriting its contents!
            // Unless it is to do with supporting multiple Q, A parts?

            questionnaire q = null;
            if (model.questionsPart == null)
            {
                if (needQuestionsPart)
                {
                    q = new questionnaire();
                }
            }
            else
            {
                //needQuestionsPart = false;

                // Button shouldn't be available if this exists,
                // but ..
                q = new questionnaire();
                questionnaire.Deserialize(model.questionsPart.XML, out q);
            }

            // Add XPath
            xpaths xpaths = new xpaths();
            // Button shouldn't be available if this exists,
            // but ..
            if (model.xpathsPart != null)
            {
                xpaths.Deserialize(model.xpathsPart.XML, out xpaths);
            }

            if (needQuestionsPart)
            {
                // Are there content controls which need questions
                bool missingQuestions = false;
                foreach (Word.ContentControl cc in Globals.ThisAddIn.Application.ActiveDocument.ContentControls)
                {
                    if (cc.XMLMapping.IsMapped)
                    {
                        missingQuestions = true;
                        break;
                    }
                }
                if (missingQuestions)
                {
                    log.Warn("Document contains pre-existing bound content controls; without Questions.");
                    System.Windows.Forms.MessageBox.Show("This docx already contains bound content controls!");
                }
            }

            string xpathsXml = xpaths.Serialize();
            if (model.xpathsPart == null)
            {
                model.xpathsPart = addCustomXmlPart(document, xpathsXml);
            }
            else
            {
                CustomXmlUtilities.replaceXmlDoc(model.xpathsPart, xpathsXml);
            }

            if (model.questionsPart == null && needQuestionsPart)
            {
                string qxml = q.Serialize();
                model.questionsPart = addCustomXmlPart(document, qxml);
            }
        }
        /// <summary>
        /// Create OpenDoPE parts, including optionally, question part.
        /// </summary>
        public void process()
        {
            Microsoft.Office.Interop.Word.Document document = null;
            try
            {
                document = Globals.ThisAddIn.Application.ActiveDocument;
            }
            catch (Exception ex)
            {
                Mbox.ShowSimpleMsgBoxError("No document is open/active. Create or open a docx first.");
                return;
            }

            Model model = Model.ModelFactory(document);

            // Button shouldn't be available if this exists,
            // but ..
            if (model.conditionsPart == null)
            {
                conditions conditions = new conditions();
                string conditionsXml = conditions.Serialize();
                model.conditionsPart = addCustomXmlPart(document, conditionsXml);
            }

            if (model.componentsPart == null)
            {
                components components = new components();
                string componentsXml = components.Serialize();
                model.componentsPart = addCustomXmlPart(document, componentsXml);
            }

            // Add XPath
            xpaths xpaths = new xpaths();
            // Button shouldn't be available if this exists,
            // but ..
            if (model.xpathsPart != null)
            {
                xpaths.Deserialize(model.xpathsPart.XML, out xpaths);
            }
            int idInt = 1;
            foreach (Word.ContentControl cc in Globals.ThisAddIn.Application.ActiveDocument.ContentControls)
            {
                if (cc.XMLMapping.IsMapped)
                {
                    log.Debug("Adding xpath for " + cc.ID);
                    // then we need to add an XPath
                    string xmXpath = cc.XMLMapping.XPath;

                    xpathsXpath item = new xpathsXpath();
                    // I make no effort here to check whether the xpath
                    // already exists, since the part shouldn't already exist!

                    item.id = "x" + idInt;

                    xpathsXpathDataBinding db = new xpathsXpathDataBinding();
                    db.xpath = xmXpath;
                    db.storeItemID = cc.XMLMapping.CustomXMLPart.Id;
                    if (!string.IsNullOrWhiteSpace(cc.XMLMapping.PrefixMappings))
                        db.prefixMappings = cc.XMLMapping.PrefixMappings;
                    item.dataBinding = db;

                    xpaths.xpath.Add(item);

                    // Write tag
                    TagData td = new TagData(cc.Tag);
                    td.set("od:xpath", item.id);
                    cc.Tag = td.asQueryString();

                    log.Debug(".. added for " + cc.ID);
                    idInt++;
                }
            }
            string xpathsXml = xpaths.Serialize();
            if (model.xpathsPart == null)
            {
                model.xpathsPart = addCustomXmlPart(document, xpathsXml);
            }
            else
            {
                CustomXmlUtilities.replaceXmlDoc(model.xpathsPart, xpathsXml);
            }

            Microsoft.Office.Tools.Word.Document extendedDocument
                = Globals.ThisAddIn.Application.ActiveDocument.GetVstoObject(Globals.Factory);

            //Microsoft.Office.Tools.CustomTaskPane ctp
            //    = Globals.ThisAddIn.createCTP(document, cxp, xpathsPart, conditionsPart, questionsPart, componentsPart);
            //extendedDocument.Tag = ctp;
            //// Want a 2 way association
            //WedTaskPane wedTaskPane = (WedTaskPane)ctp.Control;
            //wedTaskPane.associatedDocument = document;

            //extendedDocument.Shutdown += new EventHandler(
            //    Globals.ThisAddIn.extendedDocument_Shutdown);

            //taskPane.setupCcEvents(document);

            log.Debug("Done. Task pane now also open.");
        }