harvester/client/inc/harvesterrequestactive.h
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Active object for an asynchronous thumbnail request
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 *
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*/
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#ifndef HARVESTERREQUESTACTIVE_H
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#define HARVESTERREQUESTACTIVE_H
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#include <e32base.h>
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#include "harvesterclient.h"
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#include "harvestercommon.h"
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class CHarvesterRequestQueue;
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/**
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 *  Active object for an asynchronous harvest request.
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 *
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 *  @since S60 v5.0
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 */
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NONSHARABLE_CLASS( CHarvesterRequestActive ): public CActive
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    {
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public:
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    /**
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     * Destructor
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     *
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     * @since S60 v5.0
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     */
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    virtual ~CHarvesterRequestActive();
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    /**
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     * Two-phased constructor
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     *
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     * @since S60 v5.0
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     * @param aClient Session used.
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     * @param aObserver Observer to receive notifications about completed
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     *                  operations.
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     * @param aService service to call for
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     * @param aUri         Uri of the file to be harvested.
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     * @param aAlbumIds  If the harvested file is to be added to some albums, 
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     *                               the IDs of these albums..
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     * @param aAddLocation   Defines if locationdata is to be added to the harvested item.
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     * @param aQueue Queue for harvester calls
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     * @return New CHarvesterRequestActive object.
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     */
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    static CHarvesterRequestActive* NewL( 
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            RHarvesterClient& aClient, MHarvestObserver* aObserver,
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            TInt aService, const TDesC& aUri, 
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            HBufC8* aAlbumIds, TBool aAddLocation,
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            CHarvesterRequestQueue* aQueue );
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    /**
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     * Start harvesting
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     *
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     * @since S60 v5.0
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     */
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    void Start();
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    /**
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     * Forces the harvesting request to be sent to server immidiately
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     *
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     * @since S60 v5.0
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     */
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    void ForceHarvest();
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    /**
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     * Is request completed
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     *
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     * @since S60 v5.0
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     */
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    TBool RequestCompleted() const;
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private:
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    /**
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     * C++ default constructor
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     *
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     * @since S60 v5.0
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     * @param aClient Session used.
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     * @param aObserver Observer to receive notifications about completed
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     *                  operations.
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     * @param aService service to call for
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     * @param aUri         Uri of the file to be harvested.
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     * @param aAlbumIds  If the harvested file is to be added to some albums, 
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     *                               the IDs of these albums..
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     * @param aAddLocation   Defines if locationdata is to be added to the harvested item.
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     * @param aQueue Queue for harvester calls
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     * @return New CHarvesterRequestActive object.
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     */
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    CHarvesterRequestActive( RHarvesterClient& aClient,
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            MHarvestObserver* aObserver, TInt aService, const TDesC& aUri, 
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            HBufC8* aAlbumIds, TBool aAddLocation,
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            CHarvesterRequestQueue* aQueue );
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    /**
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     * Handles an active object's request completion event.
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     *
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     * @since S60 v5.0
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     */
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    void RunL();
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    /**
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     * Handles a leave occurring in the request completion event handler
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     * RunL().
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     *
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     * @since S60 v5.0
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     * @param aError The leave code.
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     * @return Error code.
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     */
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    TInt RunError( TInt aError );
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    /**
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     * Implements cancellation of an outstanding request.
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     *
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     * @since S60 v5.0
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     */
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    void DoCancel();
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private:
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    // data
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3
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    friend class CHarvesterRequestQueue;
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0
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    /**
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     * Session. Ref.
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     */
1
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    RHarvesterClient iClient;
0
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48
hgs
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    /**
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     * Observer to receive notifications about completed operations. Not owned.
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     */
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    MHarvestObserver* iObserver;
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0
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    TInt iService;
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    /**
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     * Request parameters.
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     */
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    TFileName iUri;
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    // Own.
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    HBufC8* iAlbumIds;
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    TBool iAddLocation;
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    // not own
3
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    CHarvesterRequestQueue* iRequestQueue;
0
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    TPckg<TBool> iLocation;
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    TIpcArgs iPersistentArgs;
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    /**
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     * Error code.
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     */
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    TInt iError;
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    /**
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     * If set, this request object can be deleted.
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     */
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    TBool iRequestCompleted;
1
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    TBool iCancelled;
0
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};
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#endif // HARVESTERREQUESTACTIVE_H
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// INLINE FUNCTIONS
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1
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inline TBool CHarvesterRequestActive::RequestCompleted() const
0
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    {
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    return iRequestCompleted;
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    }
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