--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uifw/ganes/inc/HgScrollBufferManager.h	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,87 @@
+/*
+* 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:     
+*
+*/
+
+
+#ifndef HGSCROLLBUFFERMANAGER_H_
+#define HGSCROLLBUFFERMANAGER_H_
+
+#include <e32base.h>
+class MHgScrollBufferObserver;
+class MHgBufferOwner;
+
+NONSHARABLE_CLASS( CHgScrollBufferManager ) : public CActive
+    {
+public:
+
+    static CHgScrollBufferManager* NewL( 
+            MHgScrollBufferObserver& aObserver, 
+            TInt aBufferSize,
+            TInt aBufferTreshold,
+            TInt aInitialPosition,
+            TInt aTotalCount );
+    
+    virtual ~CHgScrollBufferManager();
+    
+protected: // From CActive
+
+    void RunL();
+    void DoCancel();
+    TInt RunError( TInt aError );
+
+public:
+    void SetPosition( TInt aIndex );
+
+    void ItemCountChanged( TInt aIndex, TBool aRemoved, TInt aNewTotalCount );
+    
+    void SetTotalCount( TInt aTotalCount );
+    
+    void SetBufferOwner( MHgBufferOwner& aOwner );
+    
+    void ResetBuffer( TInt aPosition, TInt aTotalCount);
+
+protected:
+    CHgScrollBufferManager(
+            MHgScrollBufferObserver& aObserver, 
+            TInt aBufferSize,
+            TInt aBufferTreshold,
+            TInt aInitialPosition,
+            TInt aTotalCount );
+    
+    void ConstructL();
+
+private:
+    void NotifyObserver();
+    
+private:
+    MHgScrollBufferObserver& iObserver; 
+    MHgBufferOwner* iOwner;
+    
+    TInt iBufferSize;
+    TInt iBufferTreshold;
+    TInt iBufferPosition;
+    TInt iDiff;
+    TInt iTotalCount;
+    
+    TBool iResetOrdered;
+    
+    TInt iRequestStart;
+    TInt iRequestCount;
+    TInt iReleaseStart;
+    TInt iReleaseCount;
+    };
+
+#endif /*HGSCROLLBUFFERMANAGER_H_*/