cbs/CbsServer/ServerInc/CCbsDiskSpaceMonitor.h
author hgs
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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:  This file contains the header file of the CCbsDiskSpaceMonitor class
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*    
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*
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*/
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#ifndef     CCBSDISKSPACEMONITOR_H
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#define     CCBSDISKSPACEMONITOR_H
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//  INCLUDES
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#include <e32base.h>
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// FORWARD DECLARATIONS
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class CCbsDbImp;
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//  CLASS DECLARATION 
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/**
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*  The CCbsDiskSpaceMonitor instance listens to 
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*  shutdown signal via Publish and Subscribe. On device shutdown,
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*  the listener stops server operation by stopping the active scheduler.
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*  CbsServer will then be terminated. 
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*/
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class CCbsDiskSpaceMonitor : public CActive
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    {
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    public:     // New functions
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        /**
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        *   Creates an instance of the class.
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        *
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        *   @param  aDbImp      DB reference
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        *   @return             A new instance of CCbsDiskSpaceMonitor
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        */
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        static CCbsDiskSpaceMonitor* NewL( CCbsDbImp& aDbImp );
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        /**
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        *   Destructor.
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        */
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        ~CCbsDiskSpaceMonitor();
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        /** 
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        *   Reissues the Subscribe request.
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        */
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        void IssueRequest();
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    private:    // From CActive
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        /**
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        *   Gets called when the system state changes.
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        */
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        void RunL();
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        /**
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        *   Cancels an outstanding Subscribe request.
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        */
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        void DoCancel();
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    private:
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        /**
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        *   The constructor.
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        *
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        */
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        CCbsDiskSpaceMonitor( CCbsDbImp& aServer );
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        /**
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        *   Finalizes the construction.
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        */
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        void ConstructL();
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    private:    // Data
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        // PubSub connection
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        RProperty iProperty;
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        // DB reference
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        CCbsDbImp& iDbImp;
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    };
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#endif      //  CCBSSHUTDOWNMONITOR_H   
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// End of File
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