ContextMenu

[Seth]

How do I add a ContextMenu for the PDFViewer?

I've tried this;
<telerik:RadContextMenu.ContextMenu>
                    <telerik:RadContextMenu DataContext="{Binding ElementName=pdfViewer, Path=Commands}">
                        <telerik:RadMenuItem Header="Copy" Command="{Binding CopyCommand}"/>
                        <telerik:RadMenuItem Header="Select All" Command="{Binding SelectAllCommand}"/>
                        <telerik:RadMenuItem Header="Print..." Command="{Binding PrintPdfDocumentCommand}"/>
                    </telerik:RadContextMenu>

But the menu items don't do anything.

Thanks.

[Seth]

I see the winForms version of pdfViewer has the contextMenu by default.

What am I missing to make this work with WPF?

[Alexander]

Hi Seth,

The DataContext must be set inside the RadPdfViewer or another parent element in order to be inherited by the RadContextMenu correctly, because RadContextMenu is represented in a different visual tree.
I am attaching a sample project which demonstrates how to create RadContextMenu inside RadPdfViewer.

I hope this is helpful. Please, do not hesitate to contact us if you have any other questions.

Regards,
Alexander
Telerik

[armando]

Hi alexander, 
your solution does not work when the pdf viewer is binded to a viewmodel.
In my case DocumentSource is binded to a viewmodel property and if I set the datacontext as per your example I am not able to show the document any more

 <telerik:RadPdfViewer x:Name="pdfViewer"  DocumentSource="{Binding PdfSource,                                                                     Converter={StaticResource PdfDocumentSourceValueConverter}}"
                                                      Style="{DynamicResource RadPdfViewerStyle}"
                                                      Visibility="{Binding Path=IsVisible,
                                                                           Converter={StaticResource BoolToVisibilityConverter}}"

[Kammen]

Hello Armando,

Thank you for the interest in RadPdfViewer.

Here is an attached property that will set the proper DataContext to the context menu.

public static class PdfViewerContextMenuHelper
{
    public static readonly DependencyProperty ContextMenuProperty =
        DependencyProperty.RegisterAttached("ContextMenu", typeof(RadContextMenu), typeof(PdfViewerContextMenuHelper), new PropertyMetadata(null, new PropertyChangedCallback((s, e) => { ContextMenuChanged((RadPdfViewer)s, (RadContextMenu)e.NewValue); })));

    public static RadContextMenu GetContextMenu(DependencyObject obj)
    {
        return (RadContextMenu)obj.GetValue(ContextMenuProperty);
    }

    public static void SetContextMenu(DependencyObject obj, RadContextMenu value)
    {
        obj.SetValue(ContextMenuProperty, value);
    }

    private static void ContextMenuChanged(RadPdfViewer radPdfViewer, RadContextMenu contextMenu)
    {
        contextMenu.InheritDataContext = false;
        RadContextMenu.SetContextMenu(radPdfViewer, contextMenu);
        contextMenu.DataContext = radPdfViewer.CommandDescriptors;
    }
}

You can use it from Xaml like this:

<telerik:RadPdfViewer  ...>
    <l:PdfViewerContextMenuHelper.ContextMenu>
        <telerik:RadContextMenu>
                  ...
        </telerik:RadContextMenu>
    </l:PdfViewerContextMenuHelper.ContextMenu>
 </telerik:RadPdfViewer>

Hope this helps.

Regards,
Kammen
Telerik