--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contacts_plat/virtual_phonebook_engine_api/inc/MVPbkContactFieldData.h	Wed Sep 01 12:29:52 2010 +0100
@@ -0,0 +1,82 @@
+/*
+* Copyright (c) 2002-2007 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:  Virtual Phonebook base interface for contact field data. 
+*                Sub classes have static Cast functions for safe casting.
+*
+*/
+
+
+#ifndef MVPBKCONTACTFIELDDATA_H
+#define MVPBKCONTACTFIELDDATA_H
+
+
+// INCLUDES
+#include <e32cmn.h>
+#include <e32std.h>
+#include <VPbkFieldType.hrh>
+
+// CONSTANTS
+
+/// Constant indicating that field length is unlimited.
+const TInt KVPbkUnlimitedFieldLength = -1;
+
+
+// CLASS DECLARATIONS
+
+/**
+ * Virtual Phonebook field data interface.
+ * Interface for contact field data. Different data type interfaces
+ * are derived from this interface, which have data manipulation 
+ * functionality.
+ */
+class MVPbkContactFieldData
+    {
+    public:  // Destructor
+        /**
+         * Destructor.
+         */
+        virtual ~MVPbkContactFieldData() { }
+
+    public:  // New functions
+        /**
+         * Returns the derived data type id.
+         * @return Contact field storage type.
+         */
+        virtual TVPbkFieldStorageType DataType() const =0;
+
+        /**
+         * Returns true if the storage is empty.
+         * @return ETrue if the data field is empty.
+         */
+        virtual TBool IsEmpty() const =0;
+
+        /**
+         * Copies data from given field data.
+         * @param aFieldData    Data that is copied to this object.
+         * @precond aFieldData.DataType() == this->DataType()
+         */
+        virtual void CopyL(const MVPbkContactFieldData& aFieldData) =0;
+
+        /**
+         * Returns an extension point for this interface or NULL.
+         * @param aExtensionUid Uid of extension.
+         * @return Extension point or NULL.
+         */
+        virtual TAny* ContactFieldDataExtension(
+                TUid /*aExtensionUid*/) { return NULL; }
+    };
+
+#endif  // MVPBKCONTACTFIELDDATA_H
+
+// End of File