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/*
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* Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Virtual Phonebook base interface for contact field data.
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* Sub classes have static Cast functions for safe casting.
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*
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*/
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#ifndef MVPBKCONTACTFIELDDATA_H
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#define MVPBKCONTACTFIELDDATA_H
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// INCLUDES
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#include <e32cmn.h>
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#include <e32std.h>
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#include <VPbkFieldType.hrh>
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// CONSTANTS
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/// Constant indicating that field length is unlimited.
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const TInt KVPbkUnlimitedFieldLength = -1;
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// CLASS DECLARATIONS
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/**
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* Virtual Phonebook field data interface.
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* Interface for contact field data. Different data type interfaces
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* are derived from this interface, which have data manipulation
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* functionality.
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*/
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class MVPbkContactFieldData
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{
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public: // Destructor
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/**
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* Destructor.
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*/
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virtual ~MVPbkContactFieldData() { }
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public: // New functions
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/**
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* Returns the derived data type id.
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* @return Contact field storage type.
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*/
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virtual TVPbkFieldStorageType DataType() const =0;
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/**
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* Returns true if the storage is empty.
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* @return ETrue if the data field is empty.
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*/
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virtual TBool IsEmpty() const =0;
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/**
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* Copies data from given field data.
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* @param aFieldData Data that is copied to this object.
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* @precond aFieldData.DataType() == this->DataType()
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*/
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virtual void CopyL(const MVPbkContactFieldData& aFieldData) =0;
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/**
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* Returns an extension point for this interface or NULL.
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* @param aExtensionUid Uid of extension.
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* @return Extension point or NULL.
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*/
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virtual TAny* ContactFieldDataExtension(
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TUid /*aExtensionUid*/) { return NULL; }
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};
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#endif // MVPBKCONTACTFIELDDATA_H
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// End of File
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