public static object QueryInterface(object obj, Guid iid)
{
if (obj == null)
{
return(null);
}
// get an nsISupports (aka IUnknown) pointer from the objection
IntPtr pUnk = Marshal.GetIUnknownForObject(obj);
if (pUnk == IntPtr.Zero)
{
return(null);
}
// query interface
IntPtr ppv;
Marshal.QueryInterface(pUnk, ref iid, out ppv);
// if QueryInterface didn't work, try using nsIInterfaceRequestor instead
if (ppv == IntPtr.Zero)
{
// QueryInterface the object for nsIInterfaceRequestor
Guid interfaceRequestorIID = typeof(nsIInterfaceRequestor).GUID;
IntPtr pInterfaceRequestor;
Marshal.QueryInterface(pUnk, ref interfaceRequestorIID, out pInterfaceRequestor);
// if we got a pointer to nsIInterfaceRequestor
if (pInterfaceRequestor != IntPtr.Zero)
{
// convert it to a managed interface
nsIInterfaceRequestor req = (nsIInterfaceRequestor)Marshal.GetObjectForIUnknown(pInterfaceRequestor);
// try to get the requested interface
ppv = req.GetInterface(ref iid);
// clean up
Marshal.ReleaseComObject(req);
Marshal.Release(pInterfaceRequestor);
}
}
object result = (ppv != IntPtr.Zero) ? Marshal.GetObjectForIUnknown(ppv) : null;
Marshal.Release(pUnk);
if (ppv != IntPtr.Zero)
{
Marshal.Release(ppv);
}
return(result);
}
private static object GetInterface(nsIInterfaceRequestor requestor, Guid iid)
{
IntPtr ppv = IntPtr.Zero;
try
{
ppv = requestor.GetInterface(ref iid);
}
catch (Exception ex)
{
Debug.WriteLine("Exception \n" + ex.ToString());
}
object result = (ppv != IntPtr.Zero) ? GetObjectForIUnknown(ppv) : null;
int count = Marshal.Release(ppv);
return(result);
}
private static object GetInterface(nsIInterfaceRequestor requestor, Guid iid)
{
IntPtr ppv = IntPtr.Zero;
try
{
ppv = requestor.GetInterface(ref iid);
}
catch (Exception ex)
{
GeckoFxCoreCatalogApi.Logging.Exception(ex);
}
object result = (ppv != IntPtr.Zero) ? GetObjectForIUnknown(ppv) : null;
int count = Marshal.Release(ppv);
return(result);
}
public static nsIInterfaceRequestor GetProxy (Mono.WebBrowser.IWebBrowser control, nsIInterfaceRequestor obj)
{
object o = Base.GetProxyForObject (control, typeof(nsIInterfaceRequestor).GUID, obj);
return o as nsIInterfaceRequestor;
}
public static TInterfaceType GetInterface <TInterfaceType>(this nsIInterfaceRequestor requestor)
{
return(( TInterfaceType )GetInterface(requestor, typeof(TInterfaceType).GUID));
}
public static nsIInterfaceRequestor GetProxy(Mono.WebBrowser.IWebBrowser control, nsIInterfaceRequestor obj)
{
object o = Base.GetProxyForObject(control, typeof(nsIInterfaceRequestor).GUID, obj);
return(o as nsIInterfaceRequestor);
}
public nsIStreamListener DoContent(nsACStringBase aMimeContentType, nsIRequest aRequest, nsIInterfaceRequestor aWindowContext, bool aForceSave)
{
var request = Request.CreateRequest(aRequest);
var lChannel = request as HttpChannel;
try
{
if (lChannel != null)
{
var uri = lChannel.OriginalUri;
var contentType = lChannel.ContentType;
var contentLength = lChannel.ContentLength;
var dispositionFilename = lChannel.ContentDispositionFilename;
// Do your contenttype validation, keeping only what you need.
// Make sure you clean dispositionFilename before using it.
// If you don't want to do anything with that file, you can return null;
return(new MyStreamListener(/* ... */));
}
}
catch (COMException)
{
/* ... */
}
return(null);
}