Import/Export of custom attributes to HTML

RichTextEditor: Lists are always exported to HTML with Verdana font. 

Changing the normal style or setting the DocumentInheritsDefaultStyleSettings has no effect.

Add support for DeletePreviousWord and DeleteNextWord commands, triggered with Ctrl+Backspace and Ctrl+Delete keyboard shortcuts.

 Add support for the cstheme (Complex Script Theme Font) attribute and respect it when evaluating the font precedence. 

Add support for vertical (rotated) text in TableCell

Introduce an option to change the character which follows the list level symbol. By default this is a Tab character, however, they can be the following:

- Tab
- Space
- Nothing (none following character)

In OOXML, this is described using the 'suff' element.
In MS Word, this setting could be changed by selecting the bullet/number of the list item -> Context Menu -> Adjust List Indents -> Follow number with:.

 When importing a table from HTML and the content size is larger than the provided size  the table should be auto-fitted.

Provide an option to scale the watermark like in MS Word

Introduce support for the IF field. More info here: https://wordmvp.com/FAQs/MailMerge/MMergeIfFields

 

Compare documents functionality similar to MS Word

Implement support for content controls (a.k.a. Structured document tags), which will allow inserting editing controls in the document:

- Rich Text
- Plain Text
- Check Box
- Combo Box
- Drop-down list
- Date picker

Show substitute image when the image from the document cannot be rendered 

Make the image loading async and consider reducing their size like MS Word

To reproduce: 

public RadForm1()
{
    InitializeComponent();
    radRichTextEditor1.CommandExecuted += RadRichTextEditor1_CommandExecuted; 
    radRichTextEditor1.ActiveDocumentEditorChanged += RadRichTextEditor1_ActiveDocumentEditorChanged;
}

private void RadRichTextEditor1_ActiveDocumentEditorChanged(object sender, Telerik.WinForms.Documents.UI.ActiveDocumentEditorChangedEventArgs e)
{
    e.OldActiveEditor.CommandExecuted -= RadRichTextEditor1_CommandExecuted;
    e.NewActiveEditor.CommandExecuted += RadRichTextEditor1_CommandExecuted;        
}

 
private void RadRichTextEditor1_CommandExecuted(object sender, Telerik.WinForms.Documents.RichTextBoxCommands.CommandExecutedEventArgs e)
{
    if (e.Command is InsertPictureCommand)
    {

        var imageInline = this.radRichTextEditor1.DocumentEditor.Document.CaretPosition.GetPreviousInline() as ImageInline;
        if (imageInline != null)
        {
            imageInline.Size = new Telerik.WinControls.RichTextEditor.UI.Size(50, 50);
        }
    }
}

According to the Office Open XML specification, the attributes must be used with the prefix of their namespace to ensure that the unique attribute is used. However, some tools generate invalid documents without that prefix. RadRichTextBox throws ArgumentException in such cases. Enable the control to handle similar scenarios without errors.

Add support for embedded objects

At this point, the special characters are replaced with their HTML entities. Expose option allowing users to customize or skip this conversion.

We need some kind of mechanism to track changes of table cell properties.

Implement nested mail merge - creating mail merge reports using master-detail tables in a data source.

Typical example of this is creating an invoices with mail merge, where each invoice contains a list of items.

Workaround: for some scenarios creating custom merge field which evaluates to Table could simulate this behavior:

http://www.telerik.com/forums/merge-reports#lUdH39ww00SnEhTLLlrXwA