ncdengine/inc/catalogsengineobserver.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 06 Jul 2010 14:23:31 +0300
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/*
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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:   Catalogs Engine callback interface definition
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*
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*/
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#ifndef M_CATALOGS_ENGINE_OBSERVER_H
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#define M_CATALOGS_ENGINE_OBSERVER_H
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#include <e32cmn.h>
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/**
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 * Observer interface for catalogs engine events
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 *
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 * Engine users should implement this interface to be able to receive
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 * notifications from the catalogs engine
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 *
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 * 
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 */
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class MCatalogsEngineObserver
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    {
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public:
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    /**
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     * Called when the Catalogs Engine is about to be updated. The client
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     * must stop using the Engine, closing its session(s) and deleting its
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     * Catalogs Engine objects ASAP.
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     */
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    virtual void CatalogsEngineShutdown() = 0;
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    /**
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     * Called when a Catalogs OTA update is available. Only the client
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     * authorized for Catalogs OTA updates will receive this callback.
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     *
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     * @param aTarget Update target.
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     * @param aId Additional update target id, such as application UID or
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     *  skin ID.
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     * @param aVersion Update version.
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     * @param aUri Uri for downloading the update package.
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     * @param aForce ETrue if the update should be forced (user is not
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     *  asked), EFalse otherwise.
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     */
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    virtual void CatalogsUpdateNotification( 
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        const TDesC& aTarget,
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        const TDesC& aId,
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        const TDesC& aVersion,
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    	const TDesC& aUri,
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        TBool aForce ) = 0;
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    /**
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     * Called when connection status changes. This is called when client-
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     * related network activity starts and stops.
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     * 
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     * @param aConnectionActive Connection status. ETrue if connection is active,
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     * EFalse otherwise.
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     */
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    virtual void CatalogsConnectionEvent( TBool aConnectionActive ) = 0;
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    };
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#endif //  M_CATALOGS_ENGINE_OBSERVER_H