public static bool CreateNewQuotationAndAnnotationFromHighlight(this Highlight highlight, QuotationType quotationType, bool ImportEmptyAnnotations, bool RedrawAnnotations, List <Annotation> temporaryAnnotations)
        {
            string highlightContents = highlight.GetContents();

            if (string.IsNullOrEmpty(highlightContents) && !ImportEmptyAnnotations)
            {
                return(false);
            }

            Project project = Program.ActiveProjectShell.Project;

            if (project == null)
            {
                return(false);
            }

            PreviewControl previewControl = PreviewMethods.GetPreviewControl();

            if (previewControl == null)
            {
                return(false);
            }

            PdfViewControl pdfViewControl = previewControl.GetPdfViewControl();

            if (pdfViewControl == null)
            {
                return(false);
            }

            Document document = pdfViewControl.Document;

            if (document == null)
            {
                return(false);
            }

            Location location = previewControl.ActiveLocation;

            if (location == null)
            {
                return(false);
            }

            Reference reference = location.Reference;

            if (reference == null)
            {
                return(false);
            }


            // Dynamic variables

            KnowledgeItem newQuotation       = null;
            KnowledgeItem newDirectQuotation = null;

            TextContent textContent = null;

            // Does any other annotation with the same quads already exist?

            Annotation existingAnnotation = highlight.EquivalentAnnotations().FirstOrDefault();

            if ((string.IsNullOrEmpty(highlightContents) && ImportEmptyAnnotations) || quotationType == QuotationType.Comment)

            {
                Annotation temporaryAnnotation = temporaryAnnotations.Where(a => !highlight.AsAnnotationQuads().TemporaryQuads().Except(a.Quads.ToList()).Any()).FirstOrDefault();
                if (temporaryAnnotation != null)
                {
                    pdfViewControl.GoToAnnotation(temporaryAnnotation);
                    textContent = (TextContent)pdfViewControl.GetSelectedContentFromType(pdfViewControl.GetSelectedContentType(), -1, false, true);
                    location.Annotations.Remove(temporaryAnnotation);
                }
                else
                {
                    return(false);
                }
            }

            int startPage = 1;

            if (reference.PageRange.StartPage.Number != null)
            {
                startPage = reference.PageRange.StartPage.Number.Value;
            }

            string pageRangeString = (startPage + highlight.GetPage().GetIndex() - 1).ToString();

            Annotation knowledgeItemIndicationAnnotation = highlight.CreateKnowledgeItemIndicationAnnotation(RedrawAnnotations);

            switch (quotationType)
            {
            case QuotationType.Comment:
                if (!string.IsNullOrEmpty(highlightContents))
                {
                    newQuotation = highlightContents.CreateNewQuotationFromHighlightContents(pageRangeString, reference, quotationType);
                    reference.Quotations.Add(newQuotation);
                    project.AllKnowledgeItems.Add(newQuotation);
                    newQuotation.LinkWithKnowledgeItemIndicationAnnotation(knowledgeItemIndicationAnnotation);

                    if (AnnotationsImporterColorPicker.ImportDirectQuotationLinkedWithCommentSelected)
                    {
                        Annotation newDirectQuotationIndicationAnnotation = highlight.CreateKnowledgeItemIndicationAnnotation(RedrawAnnotations);
                        newDirectQuotation = textContent.CreateNewQuotationFromAnnotationContent(pageRangeString, reference, QuotationType.DirectQuotation);
                        reference.Quotations.Add(newDirectQuotation);
                        project.AllKnowledgeItems.Add(newDirectQuotation);
                        newDirectQuotation.LinkWithKnowledgeItemIndicationAnnotation(newDirectQuotationIndicationAnnotation);

                        EntityLink commentDirectQuotationLink = new EntityLink(project);
                        commentDirectQuotationLink.Source     = newQuotation;
                        commentDirectQuotationLink.Target     = newDirectQuotation;
                        commentDirectQuotationLink.Indication = EntityLink.CommentOnQuotationIndication;
                        project.EntityLinks.Add(commentDirectQuotationLink);

                        newQuotation.CoreStatement           = newDirectQuotation.CoreStatement + " (Comment)";
                        newQuotation.CoreStatementUpdateType = UpdateType.Manual;
                    }
                }
                else if (string.IsNullOrEmpty(highlightContents) && ImportEmptyAnnotations)
                {
                    newQuotation = textContent.CreateNewQuotationFromAnnotationContent(pageRangeString, reference, quotationType);
                    reference.Quotations.Add(newQuotation);
                    project.AllKnowledgeItems.Add(newQuotation);
                    newQuotation.LinkWithKnowledgeItemIndicationAnnotation(knowledgeItemIndicationAnnotation);

                    if (AnnotationsImporterColorPicker.ImportDirectQuotationLinkedWithCommentSelected)
                    {
                        Annotation newDirectQuotationIndicationAnnotation = highlight.CreateKnowledgeItemIndicationAnnotation(RedrawAnnotations);
                        newDirectQuotation = textContent.CreateNewQuotationFromAnnotationContent(pageRangeString, reference, QuotationType.DirectQuotation);
                        reference.Quotations.Add(newDirectQuotation);
                        project.AllKnowledgeItems.Add(newDirectQuotation);
                        newDirectQuotation.LinkWithKnowledgeItemIndicationAnnotation(newDirectQuotationIndicationAnnotation);

                        EntityLink commentDirectQuotationLink = new EntityLink(project);
                        commentDirectQuotationLink.Source     = newQuotation;
                        commentDirectQuotationLink.Target     = newDirectQuotation;
                        commentDirectQuotationLink.Indication = EntityLink.CommentOnQuotationIndication;
                        project.EntityLinks.Add(commentDirectQuotationLink);

                        newQuotation.CoreStatement           = newDirectQuotation.CoreStatement + " (Comment)";
                        newQuotation.CoreStatementUpdateType = UpdateType.Manual;
                    }
                }
                break;

            case QuotationType.QuickReference:
                if (!string.IsNullOrEmpty(highlightContents))
                {
                    newQuotation = highlightContents.CreateNewQuickReferenceFromHighlightContents(pageRangeString, reference, quotationType);
                }
                else if (string.IsNullOrEmpty(highlightContents) && ImportEmptyAnnotations)
                {
                    newQuotation = textContent.CreateNewQuickReferenceFromAnnotationContent(pageRangeString, reference, quotationType);
                }
                reference.Quotations.Add(newQuotation);
                project.AllKnowledgeItems.Add(newQuotation);
                newQuotation.LinkWithKnowledgeItemIndicationAnnotation(knowledgeItemIndicationAnnotation);
                break;

            default:
                if (!string.IsNullOrEmpty(highlightContents))
                {
                    newQuotation = highlightContents.CreateNewQuotationFromHighlightContents(pageRangeString, reference, quotationType);
                    reference.Quotations.Add(newQuotation);
                    project.AllKnowledgeItems.Add(newQuotation);
                    newQuotation.LinkWithKnowledgeItemIndicationAnnotation(knowledgeItemIndicationAnnotation);
                }
                else if (string.IsNullOrEmpty(highlightContents) && ImportEmptyAnnotations)
                {
                    newQuotation = textContent.CreateNewQuotationFromAnnotationContent(pageRangeString, reference, quotationType);
                    reference.Quotations.Add(newQuotation);
                    project.AllKnowledgeItems.Add(newQuotation);
                    newQuotation.LinkWithKnowledgeItemIndicationAnnotation(knowledgeItemIndicationAnnotation);
                }
                break;
            }

            if (existingAnnotation != null)
            {
                existingAnnotation.LinkWithKnowledgeItemIndicationAnnotation(knowledgeItemIndicationAnnotation);
                existingAnnotation.Visible = false;
            }

            return(true);
        }