/*

* Copyright (c) 2010 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 NMATTACHMENTMANAGER_H_

#define NMATTACHMENTMANAGER_H_

#include <QObject>

#include <QPointer>

#include <nmcommon.h>

class NmUiEngine;

class NmOperation;

class NmAttachmentFetchObserver;

class NmAttachmentManager : public QObject

{

    Q_OBJECT

public:

    NmAttachmentManager(NmUiEngine &uiEngine);

    virtual ~NmAttachmentManager();

    void fetchAttachment(

            const NmId &mailboxId, 

            const NmId &folderId, 

            const NmId &messageId, 

            const NmId &messagePartId);

    bool isFetching() const;

    NmId partIdUnderFetch() const;

    int progressValue() const;

    void setObserver(NmAttachmentFetchObserver *observer);

    void clearObserver();

    void cancelFetch();

private slots:

    void changeProgress(int value);

    void attachmentFetchCompleted(int result);

private:

    NmUiEngine &mUiEngine;

    QPointer<NmOperation> mFetchOperation;      // Not owned

    NmAttachmentFetchObserver *mFetchObserver;  // Not owned

    NmId mAttaId;

    int mProgressValue;

    bool mIsFetching;

};

#endif /* NMATTACHMENTMANAGER_H_ */