/*+
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* Copyright (c) 2006 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:   ?Description+
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*+
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*/+
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	+
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+
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#ifndef M_NCDPURCHASEOPERATIONOBSERVER_H+
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#define M_NCDPURCHASEOPERATIONOBSERVER_H+
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+
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#include <e32cmn.h>+
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+
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#include "catalogsarray.h"+
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+
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class MNcdPurchaseOperation;+
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class TNcdProgress;+
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class MNcdQuery;+
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+
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/**+
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 *  Observer interface for purchase operations+
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 *+
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 *  Purchase operation users should implement this interface to be able to+
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 *  receive purchase operation callbacks.+
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 *+
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 *  +
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 *  @see MNcdPurchaseOperation+
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 */+
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class MNcdPurchaseOperationObserver+
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    {+
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    +
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public:+
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+
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    /**+
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     * Called when a purchase operation has progressed.+
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     *+
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     * +
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     * @param aOperation The operation that sent the event.+
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     * @param aProgress Progress of the operation.+
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     */+
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    virtual void PurchaseProgress( MNcdPurchaseOperation& aOperation,+
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        TNcdProgress aProgress ) = 0;+
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+
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+
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    /**+
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     * Called when a query has been received for an operation.+
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     *+
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     * @note Querys need to be completed with MNcdOperation::CompleteQueryL()+
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     *       to continue the operation! Alternatively, the operation must be+
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     *       cancelled.+
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     *+
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     * +
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     * @param aOperation Uncounted reference to the operation that sent+
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     *        the event.+
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     * @param aQuery Pointer to the query object that needs to be+
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     *        completed. Counted, Release() must be called after use.+
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     * @see MNcdOperation::CompleteQueryL()+
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     */+
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    virtual void QueryReceived( MNcdPurchaseOperation& aOperation,+
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        MNcdQuery* aQuery ) = 0;+
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    +
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+
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    /**+
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     * Called when an operation has been completed.+
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     *+
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     * +
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     * @param aOperation The operation that sent the event.+
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     * @param aError Error code for operation completion. +
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     *               KErrNone for successful completion, otherwise a system+
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     *               wide error code.+
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     */+
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    virtual void OperationComplete( MNcdPurchaseOperation& aOperation,+
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        TInt aError ) = 0;+
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    };+
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    +
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#endif //  M_NCDPURCHASEOPERATIONOBSERVER_H+
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