/*

* 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 : Fieldstorage with both viewer and editor fields

*  Version     : %version: e002sa33#5 %

*

*/

#ifndef CESMRMIXEDFIELDSTORAGE_H

#define CESMRMIXEDFIELDSTORAGE_H

#include "cesmrfieldstorage.h"

#include "mesmrfieldvalidator.h"

class CESMRPolicy;

class TESMREntryField;

class MESMRResponseObserver;

class MESMRCalEntry;

/**

 * Field storage which contains both viewer and editor fields. Storage is

 * used with following use cases:

 *  - Forward

 *  - Edit recurrent event single instance

 *

 * @lib esmrgui.lib

 */

NONSHARABLE_CLASS( CESMRMixedFieldStorage ): public CESMRFieldStorage

    {

public:

    /**

     * Two phase constructor.

     */

    static CESMRMixedFieldStorage* NewL(

            MESMRFieldEventObserver& aEventObserver,

            const CESMRPolicy& aPolicy,

            MESMRResponseObserver* aResponseObserver,

            MESMRCalEntry& aEntry );

    /**

     * Destructor.

     */

    ~CESMRMixedFieldStorage();

protected: // from CESMRFieldStorage

    void ExternalizeL( MESMRCalEntry& aEntry );

    void InternalizeL( MESMRCalEntry& aEntry );

    TInt Validate( TESMREntryFieldId& aUpdatedFocus, TBool aForceValidate );

    void ChangePolicyL(

            const CESMRPolicy& aNewPolicy,

            MESMRCalEntry& aEntry );

private: // Implemantation

    /**

     * Constructor.

     *

     * @param aResponseObserver response observer

     */

    CESMRMixedFieldStorage(

            MESMRFieldEventObserver& aEventObserver,

            MESMRResponseObserver* aResponseObserver );

    /**

     * Second phase constructor.

     *

     * @param aPolicy policy states visible fields

     * @param aEntry current entry for policy

     */

    void ConstructL( const CESMRPolicy& aPolicy,

                     MESMRCalEntry& aEntry );

    /**

     * Second phase constructor.

     *

     * @param aPolicy policy states visible fields

     * @param aValidator validator object

     */

    void ConstructForwardEventL(

            const CESMRPolicy& aPolicy,

            MESMRFieldValidator* aValidator );

    /**

     * Second phase constructor.

     *

     * @param aPolicy policy states visible fields

     * @param aValidator validator object

     */

    void ConstructRecurrentEventL(

            const CESMRPolicy& aPolicy,

            MESMRFieldValidator* aValidator );

    /**

     * Second phase constructor.

     *

     * @param aPolicy policy states visible fields

     * @param aValidator validator object

     */

    void ConstructEditSeriesEventL(

            const CESMRPolicy& aPolicy,

            MESMRFieldValidator* aValidator );

    /**

     * Resets this storage

     */

    void Reset();

    /**

     * Non-virtual function to change policy.

     * @param aNewPolicy policy states visible fields

     * @param aEntry the entry to handle

     */

    void DoChangePolicyL(

            const CESMRPolicy& aNewPolicy,

            MESMRCalEntry& aEntry );

private:

    /** Enumeration for mixed event types */

    enum TMixedFieldStorageEventType

        {

        /** Unknown event type*/

        EMixedFieldStorageUnknown = 0,

        /** Forward event type*/

        EMixedFieldStorageForward,

        /** Recurrent instance event type*/

        EMixedFieldStorageRecurrentEvent,

        /** Recurrent series event type*/

        EMixedFieldStorageEditSeriesEvent

        };

private:

    /// Own: Validator object.

    MESMRFieldValidator* iValidator;

    /// Ref: Response observer

    MESMRResponseObserver* iResponseObserver;

    /// Ref: Reference to used calendar entry

    MESMRCalEntry* iEntry;

    /// Own: Created event type

    TMixedFieldStorageEventType iEventType;

    };

#endif  // CESMRMIXEDFIELDSTORAGE_H