--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menucontentsrv/src/menuhandlereng.cpp	Thu Dec 17 08:54:17 2009 +0200
@@ -0,0 +1,153 @@
+/*
+* Copyright (c) 2009 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:
+*
+*/
+
+// INCLUDE FILES
+
+#include "menuhandlereng.h"
+#include "mcsmenuhandler.h"
+#include "mcsmenuhandlerplugin.h"
+#include "mcsmenuhandlerplugin.hrh"
+#include "mcsdef.h"
+#include "mcsmenuitem.h"
+#include "menuuid.hrh"
+
+// ================= MEMBER FUNCTIONS =======================
+
+/**
+* Cleanupstack support method, calls RImplInfoPtrArray::ResetAndDestroy()
+* of the passed argument (array).
+* @param aArray Array.
+*/
+LOCAL_C void ResetAndDestroyArray( TAny* aArray )
+    {
+    ((RImplInfoPtrArray*)aArray)->ResetAndDestroy();
+    }
+
+
+// ================= MEMBER FUNCTIONS =======================
+
+// ---------------------------------------------------------
+// CMenuHandlerEng::~CMenuHandlerEng
+// ---------------------------------------------------------
+//
+CMenuHandlerEng::~CMenuHandlerEng()
+    {
+    iHandlers.ResetAndDestroy();
+    }
+
+// ---------------------------------------------------------
+// CMenuHandlerEng::NewL
+// ---------------------------------------------------------
+//
+CMenuHandlerEng* CMenuHandlerEng::NewL( RMenu& aMenu )
+    {
+    CMenuHandlerEng* eng = new (ELeave) CMenuHandlerEng( aMenu );
+    return eng;
+    }
+
+// ---------------------------------------------------------
+// CMenuHandlerEng::CMenuHandlerEng
+// ---------------------------------------------------------
+//
+CMenuHandlerEng::CMenuHandlerEng( RMenu& aMenu ): iMenu( aMenu )
+    {
+    }
+
+// ---------------------------------------------------------
+// CMenuHandlerEng::HandleCommandL
+// ---------------------------------------------------------
+//
+CMenuOperation* CMenuHandlerEng::HandleCommandL(
+        CMenuItem& aItem,
+        const TDesC8& aCommand,
+        const TDesC8& aParams,
+        TRequestStatus& aStatus )
+    {
+    // Currently, we load handlers on demand and never unload them.
+    // As there aren't many types of items, this seems appropriate.
+    CMenuHandler* handler = FindHandler( aItem.Type() );
+    if ( !handler )
+        {
+        handler = LoadHandlerL( aItem.Type() );
+        }
+    if ( handler )
+        {
+        return handler->HandleCommandL( aItem, aCommand, aParams, aStatus );
+        }
+    User::Leave( KErrNotSupported );
+    return NULL;
+    }
+
+// ---------------------------------------------------------
+// CMenuHandlerEng::FindHandler
+// ---------------------------------------------------------
+//
+CMenuHandler* CMenuHandlerEng::FindHandler( const TDesC& aType )
+    {
+    for ( TInt i = 0; i < iHandlers.Count(); i++ )
+        {
+        CMenuHandler* handler = iHandlers[i];
+        if ( handler->SupportsType( aType ) )
+            {
+            return handler;
+            }
+        }
+    return NULL;
+    }
+
+// ---------------------------------------------------------
+// CMenuHandlerEng::LoadHandlerL
+// ---------------------------------------------------------
+//
+CMenuHandler* CMenuHandlerEng::LoadHandlerL( const TDesC& aType )
+    {
+    CMenuHandlerPlugin* handler = NULL;
+    TBuf8<KMenuMaxTypeLen> type;
+    type.Copy( aType );
+    TEComResolverParams resolverParams;
+    resolverParams.SetDataType( type );
+    RImplInfoPtrArray implInfoArray;
+    CleanupStack::PushL( TCleanupItem( ResetAndDestroyArray, &implInfoArray ) );
+    REComSession::ListImplementationsL
+        ( TUid::Uid( MENU_HANDLER_IF_UID ), resolverParams, implInfoArray );
+        
+    __ASSERT_DEBUG( implInfoArray.Count() <= 1, User::Invariant() );
+    
+    if ( implInfoArray.Count() != 0 )
+        {
+        TUid implUid = implInfoArray[ 0 ]->ImplementationUid();
+        handler = CMenuHandlerPlugin::NewL( implUid, iMenu );
+        CleanupStack::PushL( handler );
+        // Here we check if this is the handler we need. Currently we only do
+        // a sanity check for the handler (it should support the registered
+        // types!), but later this can be extended with better support query.
+        // E.g. support for type AND command, etc.
+        if ( handler->SupportsType( aType ) )
+            {
+            iHandlers.AppendL( handler );
+            CleanupStack::Pop( handler );
+            }
+        else
+            {
+            CleanupStack::PopAndDestroy( handler );
+            handler = NULL;
+            }
+        }
+
+    CleanupStack::PopAndDestroy( &implInfoArray );
+    return handler;
+    }