inc/MPEngSearchTransactionObserver2.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:41:52 +0200
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/*
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* Copyright (c) 2004 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:  Presence search transactions observer.
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*
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*/
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#ifndef __MPENGSEARCHTRANSACTIONOBSERVER2_H
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#define __MPENGSEARCHTRANSACTIONOBSERVER2_H
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//  INCLUDES
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#include <E32Base.h>
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// FORWARD DECLARATIONS
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class CPEngSearchTransaction2;
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class CPEngSearchResult2;
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class MPEngTransactionStatus2;
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// CLASS DECLARATION
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/**
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 * Observer interface to receive search
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 * transaction events.
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 *
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 * @since 3.0
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 */
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class MPEngSearchTransactionObserver2
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    {
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    public: //Observer methods
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        /**
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         * Search transaction event handler.
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         *
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         * Called by CPEngSearchTransaction2 to handle search
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         * transaction events. If this method leaves, error code is
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         * reported back to HandleSearchTransactionNotifyError().
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         *
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         * @since 3.0
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         * @param aStatus Transaction status container holding result from
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         *        transaction. Container ownership remains on the notfier.
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         * @param aTransaction The transaction object where notification
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         *        is coming from. No ownership transferred.
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         * @param aSearchResult The search result object holding the
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         *        result details. No ownership transferred.
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         * @param aTransactionOperation ID of the completed transaction
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         *        Transaction operation IDs are listed in
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         *        PEngPresenceEngineConsts2.h TPEngTransactionOperation
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         *        enumeration. Client can use transaction ID to figure
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         *        out what operation completed.
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         */
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        virtual void HandleSearchTransactionCompleteL(
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            MPEngTransactionStatus2& aStatus,
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            CPEngSearchTransaction2& aTransaction,
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            CPEngSearchResult2& aSearchResult,
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            TInt aTransactionOperation ) = 0;
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        /**
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         * Failure handler.
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         *
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         * Called to handle leave errors from
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         * HandleSearchTransactionCompleteL().
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         *
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         * @since 3.0
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         * @param aError The leave error from transaction complete handling.
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         * @param aTransaction The transaction object which event
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         *        handling failed.
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         * @param aTransactionOperation ID of the transaction operation
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         *        which event handling failed. Transaction operation
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         *        IDs are listed in PEngPresenceEngineConsts2.h
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         *        TPEngTransactionOperation enumeration.
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         */
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        virtual void HandleSearchTransactionError(
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            TInt aError,
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            CPEngSearchTransaction2& aTransaction,
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            TInt aTransactionOperation ) = 0;
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    private: //Extensions
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        /**
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         * Reserved virtual table slots for future use.
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         * Do not implement this.
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         *
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         * @since 3.0
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         */
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        virtual TInt SearchTransactionReserved() {
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            return KErrNotSupported;
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            }
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    protected:  //Destructor
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        /**
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         * Protected destructor.
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         * Observers can't be destroyed via this interface.
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         */
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        virtual ~MPEngSearchTransactionObserver2() { }
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    };
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#endif  //__MPENGSEARCHTRANSACTIONOBSERVER2_H
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parents:
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parents:
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//End of file
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parents:
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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