/*

* Copyright (c) 2007-2009 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:  ESMR imap email fetcher definition

*

*/

#ifndef CESMRIMAPMAILFETCHER_H

#define CESMRIMAPMAILFETCHER_H

#include <e32base.h>

//<cmail>

#include "MFSMailRequestObserver.h"

#include "mesmricalviewerobserver.h"

//</cmail>

#include "cesmricalviewerasynccommand.h"

class CFSMailMessage;

class CFSMailClient;

/**

 * CESMRImapMailFetcher is responsible for receiving imap mail

 * to device.

 */

NONSHARABLE_CLASS( CESMRImapMailFetcherCmd ) :

        public CESMRIcalViewerAsyncCommand,

        public MFSMailRequestObserver

    {

public: // Construction and destruction

    /**

     * Creates and initializes new CESMRImapMailFetcher object. Ownership

     * is transferred to caller.

     * @param aMailClient Reference to mail client

     * @param aCalSession Reference to calendar session

     * @return Pointer to CESMRImapMailFetcher object.

     */

    static CESMRImapMailFetcherCmd* NewL(

            CFSMailClient& aMailClient,

            CCalSession& aCalSession );

    /**

     * C++ destructor.

     */

    ~CESMRImapMailFetcherCmd();

public: // From MFSMailRequestObserver

    void RequestResponseL(

            TFSProgress aEvent,

            TInt aRequestId );

private: // From MESMRIcalViewerAsyncCommand

    void ExecuteAsyncCommandL();

    void CancelAsyncCommand();

private: // Implementation

    CESMRImapMailFetcherCmd(

            CFSMailClient& aMailClient,

            CCalSession& aCalSession );

    void ConstructL();

    void FetchMessageStructureL();

    TBool FetchMessageContentsL();

    void HandleRequestResponseL(

            TFSProgress aEvent,

            TInt aRequestId );

    void NotifyCompletion();

private:

    /** Enumeration for object internal state */

    enum TESMRImapMailFetcherState

        {

        // Idle

        EIdle,

        // Fetching message structure

        EFetchingStructure,

        // Fetching message contents

        EFetchingContents

        };

private: // Data

    /// Own: Fetch operation request id

    TInt iStructureRequestId;

    /// Own: Fetch operation request id

    TInt iMessagePartRequestId;

    // Own: Current state

    TESMRImapMailFetcherState iState;

    /// Ref: Reference to mail client object

    CFSMailClient& iMailClient;

    /// Ref: Reference to messageobject

    CFSMailMessage* iMailMessage;

    /// Own: Operation result

    MESMRIcalViewerObserver::TIcalViewerOperationResult iResult;

    };

#endif // CESMRIMAPMAILFETCHER_H

// EOF