/*+
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* Copyright (c) 2006-2008 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:  Channel property observer.+
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*+
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*/+
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+
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+
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#ifndef MSENSRVPROPERTYHANDLEROBSERVER_H+
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#define MSENSRVPROPERTYHANDLEROBSERVER_H+
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+
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#include <e32base.h>+
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#include "sensrvproperty.h"+
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#include "sensrvtypes.h"+
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+
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+
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/**+
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 * Channel property observer. Callback interface to indicate when a property has been changed.+
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 *  +
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 * @lib SensrvClient.lib+
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 * @since S60 5.0 +
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 */+
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+
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class MSensrvPropertyHandlerObserver+
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    {+
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    public:+
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    /**+
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    * Notification about the changed value of a property.+
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    *+
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    * @since S60 5.0+
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    * @param[in] aChangedProperty Changed property.+
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    */  +
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    virtual void PropertyChanged( const TSensrvProperty& aChangedProperty ) = 0;+
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+
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    /**+
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    * Property listening failed.+
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    * If error was fatal, channel has also been closed and sensor server session terminated.+
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    * If error was minor, some property changes have potentially been missed.+
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    *+
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    * @since S60 5.0+
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    * @param[in] aError Error code. +
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    */+
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    virtual void PropertyError( TSensrvErrorSeverity aError ) = 0;+
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    +
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    /**+
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    * Reopen channel.+
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    * Data listening and condition listening need restarting+
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    * +
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    * @since S60 5.0    +
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    * @param aMaxBufferCount New maximum client buffer count+
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    * @return void +
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    */+
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    virtual void ReopenChannelForPropertyListeningL() = 0;+
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    +
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    /**+
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    * Notification about change in property setting avaibility.+
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    *+
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    * @since S60 5.0+
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    * @param[in] aIndication holds the new indicator value.+
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    */+
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    virtual void SetPropertySuccessIndicationChanged( +
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                 TSetPropertySuccessIndicator aIndication ) = 0;+
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    +
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    };+
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+
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#endif //MSENSRVPROPERTYHANDLEROBSERVER_H+
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