/*

 * 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:

 *

 */

#ifndef CMRCMAILREMOTEATTACHMENTDOWNLOADER_H

#define CMRCMAILREMOTEATTACHMENTDOWNLOADER_H

#include <e32base.h>

#include <bamdesca.h>

#include <f32file.h>

#include "mcalremoteattachmentoperation.h"

#include "mfsmailrequestobserver.h"

#include "tmrcmailremoteattachmentpluginurlparser.h"

class CFSMailMessage;

class CFSMailClient;

class CCalRemoteAttachment;

class MCalRemoteAttachmentOperationObserver;

/**

 * CMRCmailRemoteAttachmentDownloader is responsible for

 * downloading remote attachment.

 */

NONSHARABLE_CLASS( CMRCmailRemoteAttachmentDownloader ) :

        public CActive,

        public MCalRemoteAttachmentOperation,

        public MFSMailRequestObserver

    {

public: // Construction and destruction

    /**

     * Creates and initializes new CMRCmailRemoteAttachmentDownloader

     * object. Ownership is transferred to caller.

     *

     * @param aMailClient Reference to mail client

     * @param aObserver Reference to command observer

     * @param aUri Attachment URI

     */

    static CMRCmailRemoteAttachmentDownloader* NewL(

            CFSMailClient& aMailClient,

            MCalRemoteAttachmentOperationObserver& aObserver,

            const TDesC& aUri );

    /**

     * C++ destructor

     */

    ~CMRCmailRemoteAttachmentDownloader();

public: // From CActive

    void DoCancel();

    void RunL();

    TInt RunError( TInt aError );

public: // From MCalRemoteAttachmentOperation

    TInt Progress() const;

    const MCalRemoteAttachment& AttachmentInformation() const;

private: // From MFSMailRequestObserver

    void RequestResponseL( TFSProgress aEvent, TInt aRequestId );

private: // Implementation

    CMRCmailRemoteAttachmentDownloader(

            CFSMailClient& aMailClient,

            MCalRemoteAttachmentOperationObserver& aObserver );

    void ConstructL(

            const TDesC& aUri );

    void IssueRequest();

    void NotifyCompletionL( CFSMailMessagePart& aAttachment );

    void NotifyError( TInt aError );

    TInt ProgressL() const;

    void DoCancelL();

private: // Data

    /// Ref: Reference to mail client

    CFSMailClient& iMailClient;

    /// Ref: Command observer

    MCalRemoteAttachmentOperationObserver& iObserver;

    /// Own: Remote attachment information

    CCalRemoteAttachment* iRemoteAttachment;

    /// Own: Attachment URI

    HBufC* iUri;

    /// Own: Mail message

    CFSMailMessage* iMailMessage;

    /// Own: Mail operation ID

    TInt iFSMailOperationId;

    /// Own: Mail ID parser

    TMRCMailRemoteAttachmentPluginURLParser iMailIdParser;

    /// Own: Attachment file

    RFile iAttachmentFile;

    };

#endif // CMRCMAILREMOTEATTACHMENTDOWNLOADER_H

// EOF