--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/upnpframework/upnpcommand/inc/loadupnpcommand.h	Thu Dec 17 08:52:00 2009 +0200
@@ -0,0 +1,88 @@
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  helper function for loading CUpnpCommand plugin
+*
+*/
+
+
+#include <e32base.h>
+#include <ecom/ecom.h>          // REComSession
+#include <mmf/common/mmfcontrollerpluginresolver.h>
+#include "upnpcommand.h"
+
+/**
+ * -------------------------------------------------------------------------
+ * LoadUpnpCommandL
+ * A helper inline function to load the upnp plugin.
+ * The method guarantees the correct instance is loaded in a secure way.
+ * If plugin can not be located, leaves with KErrNotSupported
+ *
+ * @param aCommandId the identity of command to load
+ * @param aCalback callback interface pointer (may be left NULL)
+ * -------------------------------------------------------------------------
+ */
+inline CUpnpCommand* LoadUpnpCommandL(
+    UpnpCommand::TUpnpCommandId aCommandId,
+    MUpnpCommandCallback* aCallback = 0 )
+    {
+    CUpnpCommand* command = NULL;
+
+    // Create resolver parameters to pin point the implementation
+    TEComResolverParams resolverParams;
+    _LIT8( KCommandDataType, "UpnpCommand" );
+    resolverParams.SetDataType( KCommandDataType );
+    resolverParams.SetWildcardMatch( EFalse );
+
+    RImplInfoPtrArray implArray;
+   CleanupResetAndDestroyPushL( implArray );
+
+    // Find implementation for the interface
+    const TUid implIFUid = {0x200075DB};
+    REComSession::ListImplementationsL( implIFUid, implArray );
+    for( TInt i=0; i<implArray.Count() && command==0; ++i )
+        {
+        CImplementationInformation* implInfo = implArray[i];
+
+        if( implInfo->VendorId() == VID_DEFAULT && implInfo->RomBased() )
+            {
+            TAny* impl = REComSession::CreateImplementationL(
+                implIFUid,
+                CUpnpCommand::DtorKeyOffset(),
+                resolverParams );
+
+            // Cast the object to correct type before returning
+            command = REINTERPRET_CAST( CUpnpCommand*, impl );
+
+            // Set the command ID
+            CleanupStack::PushL( command );
+            command->SetCommandIdL( aCommandId );
+            if ( aCallback )
+                {
+                command->SetObserver( aCallback );
+                }
+            CleanupStack::Pop( command );
+            }
+        }
+    CleanupStack::PopAndDestroy(); // empties implArray
+
+    if ( command == 0 )
+        {
+        User::Leave( KErrNotSupported );
+        }
+
+    // Return the object
+    return command;
+    }
+
+// End of File