--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipsservices/ipssosplugin/src/ipsplgmsgswap.cpp	Thu Dec 17 08:39:21 2009 +0200
@@ -0,0 +1,57 @@
+/*
+* Copyright (c) 2007 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:  Swapper class for message sorting function
+*
+*/
+
+
+#include "emailtrace.h"
+#include "ipsplgheaders.h"
+// ---------------------------------------------------------------------------
+// Basic constructor
+// ---------------------------------------------------------------------------
+
+TIpsPlgMsgSwap::TIpsPlgMsgSwap( CMsvEntry& aFolderEntry )
+    : iFolderEntry(aFolderEntry)
+    {
+    FUNC_LOG;
+    // none
+    }
+
+// ---------------------------------------------------------------------------
+// Swaps the messages inside the folder CMsvEntry instance. 
+// This is somewhat extreme solution assuming that CMsvEntry returns
+// references to the actual TMsvEntries (not copies) and that CMsvEntry
+// does not do any sorting itself.
+// ---------------------------------------------------------------------------
+
+void TIpsPlgMsgSwap::Swap( TInt aLeft, TInt aRight ) const
+    {
+    FUNC_LOG;
+    if ( aLeft == aRight )
+        {
+        return;
+        }
+        
+    TInt childCount( iFolderEntry.Count() );
+    if ( aLeft >= childCount || aRight >= childCount  )
+        {
+        return;
+        }
+        
+    Mem::Swap( (TAny*) &( iFolderEntry[aLeft] ), 
+        (TAny*) &( iFolderEntry[aRight] ), sizeof( TMsvEntry ) );
+    }
+
+