Implement support for pictures with references represented with the r:link attribute in the schema.

Form fields are the legacy way to insert an editable controls in a document (text boxes, checkboxes, dropdowns) by using the FORMTEXT, FORMCHECKBOX and FORMDROPDOWN fields.

Do not confuse with content controls (structured document tags) (see https://feedback.telerik.com/Project/184/Feedback/Details/190057 ) and with ActiveX controls.

These file formats are very similar to DOCX, and can be easily imported with loss of some information (e.g. macros).

In a DOCX document, the users can define an image which is bigger than the size of the page. When such an image is at the beginning of the document and is converted with PdfFormatProvider, an additional page is added in the result PDF.

foreach (var image in document.EnumerateChildrenOfType<ImageInline>())
{
    var section = image.Paragraph.Parent as Section;
    if (image.Image.Height > section.PageSize.Height - section.PageMargins.Top - section.PageMargins.Bottom)
    {
        var height = section.PageSize.Height - section.PageMargins.Top - section.PageMargins.Bottom - (image.Paragraph.Spacing.SpacingAfter * (image.Paragraph.Spacing.LineSpacing - 0.97));
        image.Image.Size = new System.Windows.Size(image.Image.Width, height);
    }
}

Add support for INCLUDEPICTURE fields. Such fields should work with nested MERGEFIELD, as this is common scenario.

Workaround: Manually insert images over specific placeholder
RadFlowDocument document = new RadFlowDocument();
RadFlowDocumentEditor editor = new RadFlowDocumentEditor(document);
  
editor.InsertText("1");
editor.InsertText("EXAMPLE_IMAGE");
editor.InsertText("2");
  
foreach (var run in editor.Document.EnumerateChildrenOfType<Run>().ToArray())
{
    if(run.Text == "EXAMPLE_IMAGE")
    {
        Paragraph paragraph = run.Paragraph;
        int indexOfCurrentRun = paragraph.Inlines.IndexOf(run);
        paragraph.Inlines.RemoveAt(indexOfCurrentRun);
  
        ImageInline imageInline = new ImageInline(document);
        imageInline.Image.ImageSource = newTelerik.Windows.Documents.Media.ImageSource(imageData, "png");
        paragraph.Inlines.Insert(indexOfCurrentRun, imageInline);
    }
}

When MergeField is present in the document, and this merge field is evaluated to an empty string - this, for example, happens when the property in the data source is set to null, empty string, or is missing at all - the result fragment remains in the result document. Instead, it should be removed.

Steps to reproduce: 
- Create document with merge field, the field should contain result fragment, and set data source which contains null or string.Empty value for the field:

            RadFlowDocument document = new RadFlowDocument();
            RadFlowDocumentEditor editor = new RadFlowDocumentEditor(document);

            editor.InsertField("MERGEFIELD FirstName ", "«FirstName»");

            List<Person> source = new List<Person>()
            {
                new Person() { FirstName = string.Empty }
            };

            RadFlowDocument mergedDocument = document.MailMerge(source);
Expected: The result document is empty.
Actual: The result document contains "«FirstName»" string.

Available in LIB Version 2017.3.1120.

Allow to password-protect a document, so that it cannot be shown (read) without the password. Also, enable opening encrypted documents.

The properties applied to the paragraph marker are not respected when evaluating the style of the child elements. That leads to exporting the bullets in a list with their default settings when they are applied to the paragraph properties. The issue is reproducible when exporting to PDF and RTF.


Workaround, applicable when the style of all the bullets in the specific list is the same:

Change the style of the list level:
foreach (var paragraph in this.document.EnumerateChildrenOfType<Paragraph>())
{
    if (paragraph.ListId > -1)
    {
        this.document.Lists.GetList(paragraph.ListId).Levels[paragraph.ListLevel].CharacterProperties.CopyPropertiesFrom(paragraph.Properties.ParagraphMarkerProperties);
    }
}

When inserting content in an empty paragraph, the styles applied to it are the default document styles. However, if the properties are present in the last paragraph symbol, the content should inherit them.

Workaround: Copy the properties of the marker after inserting the content:

run.Properties.CopyPropertiesFrom(paragraph.Properties.ParagraphMarkerProperties);