Introduce new section properties which are responsible for defining columns in the section.

When importing HTML content to a RadFlowDocument and exporting it to PDF format, the following error message occurs:

System.ArgumentException: 'The document element is associated with another parent. (Parameter 'item')'

When imported in the WordsProcessing model, the current HTML doesn't respect the defined column width and all columns have identical width:

    <colgroup>
        <col span="1" style="width: 33.3302%;">
        <col span="1" style="width: 17.5658%;">
        <col span="1" style="width: 49.104%;">
    </colgroup>

Observed result:

Expected result:

Workaround: use the width property as follows:

    <colgroup>
        <col span="1" width="33.3302%">
        <col span="1" width="17.5658%">
        <col span="1" width="49.104%">
    </colgroup>

Add support for VML shapes.

Related: Add support for Shape Group.

Shape Group is used to collect shapes and groups so they can be positioned and transformed as a single unit. A group contains group, shapetype, shape, pre-defined shape - arc, curve, image, line, oval, polyline, rect, roundrect - and lock elements.

When the object is serialized out as XML, its qualified name is v:group.

When there is an abstractNum defined with the same abstractNumId in word\glossary\numbering.xml and in the word\numbering.xml, a "System.ArgumentException: An item with the same key has already been added." exception is thrown.

In other cases, the import overwrites the styles from the main document part with the ones defined in the glossary or fails to import different parts of the content. 

Workaround: Delete the glossary files:

string path = "File.docx";
using (Stream str = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
	using (ZipArchive archive = ZipArchive.Update(str, null))
	{
		foreach (ZipArchiveEntry entry in archive.Entries.ToList())
		{
			if (entry.FullName.Contains("glossary/"))
			{
				entry.Delete();
			}
		}
	}

	DocxFormatProvider provider = new DocxFormatProvider();
	RadFlowDocument flowDocument = provider.Import(str, null);
}

Getting an exception message when trying to view a document as a PDF using the PdfFormatProvider which started happening only after upgrading Telerik to the latest version, 7.1.0 in Telerik UI for Blazor.

Exception Message:

width should be greater or equal than 0. (Parameter 'width')

I have copied the stack trace and source of the exception below:

Source: Telerik.Documents.Fixed

Stack Trace:    at Telerik.Windows.Documents.Fixed.Model.Editing.Layout.ContentElementLayoutElementBase`1.DrawHighlights(DrawLayoutElementContext context)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Layout.ContentElementLayoutElementBase`1.Draw(DrawLayoutElementContext context)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Block.Draw(IEnumerable`1 lineElements, DrawLayoutElementContext context)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Block.DrawInternal(FixedContentEditor editor, Rect boundingRect)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Block.Telerik.Windows.Documents.Fixed.Model.Editing.Flow.IDrawArrangedElement.DrawArrangedElement(FixedContentEditor editor, Rect boundingRect)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Flow.SectionInfo.DrawArrangedElement(IBlockElement blockElement, Double horizontalOffset, Double verticalOffset)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Utils.SectionInfoExtensions.DrawArrangedElements(SectionInfo section, IList`1 elements)
   at Telerik.Windows.Documents.Fixed.Model.Editing.RadFixedDocumentEditor.Draw()
   at Telerik.Windows.Documents.Fixed.Model.Editing.RadFixedDocumentEditor.StartNewPage(SectionProperties sectionProperties)
   at Telerik.Windows.Documents.Fixed.Model.Editing.RadFixedDocumentEditor.StartNewPage()
   at Telerik.Windows.Documents.Fixed.Model.Editing.RadFixedDocumentEditor.AddBlock(IBlockElement blockElement, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.Export.PdfExporter.ExportSection(Section section, RadFixedDocumentEditor editor)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.Export.PdfExporter.ExportDocument(RadFlowDocument document, RadFixedDocumentEditor editor)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.Export.PdfExporter.ExportInternal()
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.Export.PdfExporter.Export()
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider.ExportToFixedDocument(RadFlowDocument document, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider.ExportOverride(RadFlowDocument document, Stream output, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider.ExportOverride(RadFlowDocument document, Stream output)
   at Telerik.Windows.Documents.Common.FormatProviders.FormatProviderBase`1.Export(T document, Stream output)
   at Telerik.Windows.Documents.Common.FormatProviders.BinaryFormatProviderBase`1.Export(T document)

This is the code for import/export which result is illustrated below:

            string inputFilePath = "test1.doc";
            Telerik.Windows.Documents.Flow.Model.RadFlowDocument document;
            Telerik.Windows.Documents.Flow.FormatProviders.Doc.DocFormatProvider doc_provider = new Telerik.Windows.Documents.Flow.FormatProviders.Doc.DocFormatProvider();
            using (Stream input = File.OpenRead(inputFilePath))
            {
                document = doc_provider.Import(input, TimeSpan.FromSeconds(10));
            }

            Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider docx_provider = new Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider();
            string outputFilePath = "Exported.docx";
            using (Stream output = File.OpenWrite(outputFilePath))
            { 
                docx_provider.Export(document, output, TimeSpan.FromSeconds(10));
            }

            Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });

This results in a missing paragraph. For example, having a table with three cells and Page field in the footer of a document and exporting it to PDF, will not export the last paragraph. 

As a workaround add new run after the last field character in the cell's table before exporting the document to PDF.

                BlockCollection footerContent = this.document.Sections.First().Footers.Default.Blocks;
                Table footerTable = footerContent.First() as Table;
                var cells = footerTable.Rows.Last().Cells.Where(x => x.EnumerateChildrenOfType<FieldCharacter>().Any());
                foreach (var cell in cells)
                {
                    cell.Blocks.AddParagraph().Inlines.AddRun();
                }

In WordsProcessing on import only the lower case CSS attributes are correctly imported. Upper case and mixed case are ignored and the default values are used.