meetingrequest/mrgui/inc/mesmrfieldstorage.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:39:21 +0200
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/*
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* Copyright (c) 2007-2009 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: This file defines class MESMRFieldStorage.
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*
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*/
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#ifndef MESMRFIELDSTORAGE_H
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#define MESMRFIELDSTORAGE_H
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#include <e32std.h>
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class MESMRCalEntry;
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class CESMRField;
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/**
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 * Pure virtual class to be inherited by field storage classes.
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 */
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class MESMRFieldStorage
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    {
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public:
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    virtual ~MESMRFieldStorage(){}
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public:
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    /**
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     * Returns the count for all the fields in the storage
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     *
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     * @return TInt - field count
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     */
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    virtual TInt Count() const = 0;
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    /**
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     * Returns field for given index.
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     *
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     * @param aInd - index of the wanted field.
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     * @return CESMRField pointer
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     */
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    virtual CESMRField* Field( TInt aInd ) const = 0;
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    /**
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     * Returns field for given field id.
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     * 
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     * @param aId field id
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     * @return CESMRField poiter or NULL. 
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     */
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    virtual CESMRField* FieldById( TESMREntryFieldId aId ) const = 0;
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    /**
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     * Called in the construction phase to set needed
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     * entry informations to fields.
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     *
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     * @param aEntry - contains needed information.
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     */
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    virtual void InternalizeL( MESMRCalEntry& aEntry ) = 0;
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    /**
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     * Called when editing the entry is done. Information from edited fields
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     * is collected to aEntry.
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     *
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     * @param aEntry - entry where all the edited information is stored
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     */
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    virtual void ExternalizeL( MESMRCalEntry& aEntry ) = 0;
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    /**
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     * Validates the content of fields
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     *
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     * @param aId Field id where focus is set if validation fails
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     * @param aForceValidate ETrue if force validation is used
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     * @return TInt
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     */
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    virtual TInt Validate( 
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    		TESMREntryFieldId& aId, 
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    		TBool aForceValidate = EFalse ) = 0;
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    };
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#endif