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// Copyright (c) 2004-2009 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 the License "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:
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// Component test of Publish and Subscribe
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//
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//
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/**
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@file
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@internalTechnology
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*/
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#ifndef __CPROPERTYWATCH_H__
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#define __CPROPERTYWATCH_H__
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#include <e32base.h>
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#include <e32property.h>
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#include "usbmsshared.h"
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class CPropertyHandler;
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class CStateMachine;
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enum
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{
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EUsbMsState_Read = EUsbMsDriveState_Error + 100,
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EUsbMsState_Written
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};
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/**
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An active object that subscribes to a specified Mass Storage property and
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calls a provided handler each time the property is published.
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*/
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class CPropertyWatch : public CActive
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{
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public:
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static CPropertyWatch* NewLC(TUsbMsDriveState_Subkey aSubkey, CPropertyHandler& aHandler);
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private:
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CPropertyWatch(CPropertyHandler& aHandler);
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void ConstructL(TUsbMsDriveState_Subkey aSubkey);
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~CPropertyWatch();
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void RunL();
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void DoCancel();
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RProperty iProperty;
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CPropertyHandler& iHandler;
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};
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/**
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A property handler class that handles the change of ms drive status
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*/
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class CPropertyHandler : public CBase
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{
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public:
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virtual void HandleStatusChange(RProperty& aProperty) = 0;
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protected:
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CPropertyHandler(TInt aDriveNo, CStateMachine& aSm);
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virtual ~CPropertyHandler();
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protected:
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TInt iDriveNo;
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CStateMachine& iStateMachine;
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};
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class CMsDriveStatusHandler : public CPropertyHandler
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{
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public:
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static CMsDriveStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm);
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void HandleStatusChange(RProperty& aProperty);
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protected:
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CMsDriveStatusHandler(TInt aDriveNo, CStateMachine& aSm);
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};
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class CMsReadStatusHandler : public CPropertyHandler
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{
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public:
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static CMsReadStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm);
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void HandleStatusChange(RProperty& aProperty);
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private:
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CMsReadStatusHandler(TInt aDriveNo, CStateMachine& aSm);
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};
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class CMsWrittenStatusHandler : public CPropertyHandler
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{
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public:
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static CMsWrittenStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm);
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void HandleStatusChange(RProperty& aProperty);
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private:
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CMsWrittenStatusHandler(TInt aDriveNo, CStateMachine& aSm);
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};
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#endif // __CPROPERTYWATCH_H__
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