Cannot get custom editor to use the provisional tab.

Hi,

I cannot get my custom editor working with the new provisional tab in VS11.

My Editor is defined on the package as
[ProvideEditorExtension(typeof(MyEditorFactory), ".my", 50)]

And my EditorFactory looks like this
[Guid("7e574ed2-97f6-4594-b7f3-a403f8056443")
public sealed class MyEditorFactory : IVsEditorFactory
{
    public int SetSite(Microsoft.VisualStudio.OLE.Interop.IServiceProvider psp)
    {           
        return VSConstants.S_OK;
    }

    public int MapLogicalView(ref Guid rguidLogicalView, out string pbstrPhysicalView)
    {
        pbstrPhysicalView = null;
        return VSConstants.S_OK;
    }

    public int Close()
    {
        return VSConstants.S_OK;
    }

    [SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
    public int CreateEditorInstance(
                    uint grfCreateDoc,
                    string streamName,
                    string streamID,
                    IVsHierarchy pvHier,
                    uint itemid,
                    System.IntPtr punkDocDataExisting,
                    out System.IntPtr ppunkDocView,
                    out System.IntPtr ppunkDocData,
                    out string pbstrEditorCaption,
                    out Guid pguidCmdUI,
                    out int pgrfCDW)
    {
        ppunkDocView = IntPtr.Zero;
        ppunkDocData = IntPtr.Zero;
        pguidCmdUI = new Guid("7e574ed2-97f6-4594-b7f3-a403f8056443");
        pgrfCDW = 0;
        pbstrEditorCaption = null; // allows extensions in the tab name like "[Design]"

        // validate inputs
        if ((grfCreateDoc & (VSConstants.CEF_OPENFILE | VSConstants.CEF_SILENT)) == 0)
        {
            return VSConstants.E_INVALIDARG;
        }
        if (punkDocDataExisting != IntPtr.Zero)
        {
            return VSConstants.VS_E_INCOMPATIBLEDOCDATA;
        }

        var editor = new MyEditorPane();
        editor.StreamId = streamID;
        var iu = Marshal.GetIUnknownForObject(editor);
        Debug.Assert(iu.ToInt64() > 0, "docview is not valid");
        ppunkDocView =
        ppunkDocData = iu;
       
        return VSConstants.S_OK;
    }
}

Everything works perfectly fine when I open .my files normally:
var dte = (DTE)this.GetService(typeof(SDTE));
dte.ItemOperations.OpenFile(fullpath, Constants.vsViewKindAny);

But if I try to execute the same code within the provisional scope like this:
using (new NewDocumentStateScope(__VSNEWDOCUMENTSTATE.NDS_Provisional, VSConstants.NewDocumentStateReason.Navigation))
{
    var dte = (DTE)this.GetService(typeof(SDTE));
 dte.ItemOperations.OpenFile(fullpath, Constants.vsViewKindAny);
}

Then my CreateEditorInstance method does not get called and the OpenFile call fails with a COMException "Operation aborted (Exception from HRESULT: 0x80004004 (E_ABORT))". I cannot get any more details out of the ActivityLog.

The OpenFile operation is called from within a spearate ToolWindow, but I doubt that this will cause an issue!?
I also tried to provide a LogicalView for my editor, without any effect:
[ProvideEditorLogicalView(typeof(MyEditorFactory), VSConstants.LOGVIEWID.Any_string, IsTrusted = true)]

Can someone have any idea, why that isn't working?
Is there a more detailed documentation regarding the provisional tab out there?

Cheers,
Rainier

A programmer ia a tool to convert coffein to code.