Still no region adapter for Ribbon in NCAL... any alternatives?

Sorry for reviving this old thread, but I can't get this to work at all. Does anyone have a small, working sample project that uses the adapters discussed here? I first wrote a detailed post with all the details of what I'm doing, but I accidentally hit the mouse's "back" button and lost everything... :(

I'm getting cast errors in the RibbonTabItemRegionAdapter, and quite frankly I'm not sure what the adapter attached in this thread is supposed to adapt, but I haven't had any luck getting any of this to work.

I'm using MEF, not Unity. I had to add Export and ImportingConstructor attributes in the adapters, and I'm registering the view like this:

_region.RegionManager.RegisterViewWithRegion("TestContextualTab", () => new TestRibbonTab());

also tried:


_region.RegionManager.RegisterViewWithRegion("TestContextualTab", () => new TestRibbonTab().RibbonGroups);

Both result in a cast error in RibbonTabItemRegionAdapter. I tried without it, and the other adapter complains with:


An exception occurred while creating a region with name 'TestContextualTab'. The exception was: System.InvalidOperationException: ContentControl's Content property is not empty. 
    This control is being associated with a region, but the control is already bound to something else. 
    If you did not explicitly set the control's Content property, 
    this exception may be caused by a change in the value of the inherited RegionManager attached property.

My view inherits from RibbonTabItem and defines a single RibbonGroup with a test button (ButtonTool) in it:

<igRibbon:RibbonTabItem x:Class="Views.TestRibbonTab"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:igRibbon="http://infragistics.com/Ribbon"
             Header="TestContext">
    <igRibbon:RibbonGroup
        Caption="Test">
        <igRibbon:ButtonTool
            Caption="Test Button"
            />
    </igRibbon:RibbonGroup>
</igRibbon:RibbonTabItem>

Adapter mappings:


regionAdapterMappings.RegisterMapping(typeof(XamRibbon), Container.GetExportedValue<XamRibbonRegionAdapter>());
regionAdapterMappings.RegisterMapping(typeof(RibbonTabItem), Container.GetExportedValue<RibbonTabItemRegionAdapter>());

Ultimately what I want to do if for modules to "inject" their view into a contextual tab so that module-specific tabs are visible only when the module is being displayed.

Any idea / more info you need to help?

Thanks,
Michel