/*

* Copyright (c) 2006 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 C_NCDDOWNLOADOPERATIONPROXY_H	

#define C_NCDDOWNLOADOPERATIONPROXY_H

#include "ncdoperationimpl.h"

#include "ncdbaseoperationproxy.h"

#include "ncddownloadoperation.h"

#include "ncdoperationdatatypes.h"

class MNcdDownloadOperationObserver;

class CNcdNodeProxy;

class CNcdDownloadOperationProxy : 

    public CNcdOperation< MNcdDownloadOperation >

    {

public:

    /**

     * Constructor

     *

     * @param aSession is the session that is used between

     *                 the proxy and the server.

     * @param aDownloadType Download type

     * @param aHandle is the handle that identifies the serverside

     *                object that this proxy uses.

     * @param aRemoveHandler An observer that is called during destruction.

     * @param aNode The node this operation was started from.

     */    

    static CNcdDownloadOperationProxy* NewL( MCatalogsClientServer& aSession,

                        TNcdDownloadDataType aDownloadType,

                        TInt aHandle,

                        MNcdOperationProxyRemoveHandler* aRemoveHandler,

                        CNcdNodeProxy* aNode, 

                        MNcdDownloadOperationObserver* aObserver,

                        CNcdNodeManagerProxy* aNodeManager,

                        TInt aDownloadIndex = 0,

                        TBool aIsRunning = EFalse );

    /**

     * Constructor

     *

     * @param aSession is the session that is used between

     *                 the proxy and the server.

     * @param aDownloadType Download type

     * @param aHandle is the handle that identifies the serverside

     *                object that this proxy uses.

     * @param aRemoveHandler An observer that is called during destruction.

     * @param aNode The node this operation was started from.

     */

    static CNcdDownloadOperationProxy* NewLC(  MCatalogsClientServer& aSession,

                        TNcdDownloadDataType aDownloadType,

                        TInt aHandle,

                        MNcdOperationProxyRemoveHandler* aRemoveHandler,

                        CNcdNodeProxy* aNode,

                        MNcdDownloadOperationObserver* aObserver,

                        CNcdNodeManagerProxy* aNodeManager,

                        TInt aDownloadIndex = 0,

                        TBool aIsRunning = EFalse );

public: // From MNcdDownloadOperation

    /**

     * @see MNcdDownloadOperation::FileCount()

     */

    TInt FileCount();

    /**

     * @see MNcdDownloadOperation::CurrentFile()

     */

    TInt CurrentFile();    

    /**

     * @see MNcdDownloadOperation::PauseL()

     */

    void PauseL();

    /**

     * @see MNcdDownloadOperation::ResumeL()

     */

    void ResumeL();

    /**

     * @see MNcdDownloadOperation::IsPaused()

     */

    TBool IsPaused();

    /**

     * @see MNcdDownloadOperation::IsPausableL()

     */

    TBool IsPausableL();

    /**

     * @see MNcdDownloadOperation::AddObserverL()

     */

    void AddObserverL( MNcdDownloadOperationObserver& aObserver );

    /**

     * @see MNcdDownloadOperation::RemoveObserver()

     */

    TBool RemoveObserver( MNcdDownloadOperationObserver& aObserver );

    /**

     * @see MNcdDownloadOperation::DownloadDataType()

     */

    TNcdDownloadDataType DownloadDataType() const;

public: // From MNcdOperation

    /**

     * @see MNcdOperation::OperationType()

     */

    TNcdInterfaceId OperationType() const;

protected: // Constructor and destructor

    /**

     * Constructor

     *

     */

    CNcdDownloadOperationProxy( TNcdDownloadDataType aDownloadType,

        TInt aDownloadIndex );

    virtual ~CNcdDownloadOperationProxy();

    /**

     * ConstructL

     *

     * @param aSession is the session that is used between

     *                 the proxy and the server.

     * @param aHandle is the handle that identifies the serverside

     *                object that this proxy uses.

     * @param aRemoveHandler An observer that is called during destruction.

     * @param aNode The node this operation was started from.

     */

    void ConstructL( MCatalogsClientServer& aSession,

                    TInt aHandle,

                    MNcdOperationProxyRemoveHandler* aRemoveHandler,

                    CNcdNodeProxy* aNode,

                    MNcdDownloadOperationObserver* aObserver,

                    CNcdNodeManagerProxy* aNodeManager,

                    TBool aIsRunning );

protected: // From CNcdBaseOperationProxy

    /**

     * @see CNcdBaseOperationProxy::ProgressCallback()

     */

    void ProgressCallback();

    /**

     * @see CNcdBaseOperationProxy::QueryReceivedCallback()

     */

    void QueryReceivedCallback( CNcdQuery* aQuery );

    /**

     * @see CNcdBaseOperationProxy::CompleteCallback()

     */

    void CompleteCallback( TInt aError );

    /**

     * @see CNcdBaseOperationProxy::CreateInitializationBufferL()

     */    

    HBufC8* CreateInitializationBufferL();

    /**

     * @see CNcdBaseOperationProxy::InitializationCallback()    

     */

    void InitializationCallback( RReadStream& aReadStream, 

        TInt aDataLength );    

protected: // CActive

    /**

     * @see CActive::DoCancel

     */    

    void DoCancel();

private: // data

    /**

     * Operation observer, for callbacks.

     * Observer not own.

     */    

    RPointerArray<MNcdDownloadOperationObserver> iObservers;

    TNcdDownloadDataType iDownloadType;

    // Total number of files      

    TInt iFileCount;

    // Number of the currently downloaded file

    TInt iCurrentFile;

    // Pause-state of the download

    TBool iIsPaused;

    };

#endif // C_NCDDOWNLOADOPERATIONPROXY_H