sl@0: // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Component test of Publish and Subscribe
sl@0: // 
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @internalTechnology
sl@0: */
sl@0: 
sl@0: #ifndef __CPROPERTYWATCH_H__
sl@0: #define __CPROPERTYWATCH_H__
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <e32property.h>
sl@0: #include "usbmsshared.h"
sl@0: 
sl@0: class CPropertyHandler;
sl@0: class CStateMachine;
sl@0: 
sl@0: enum 
sl@0: 	{
sl@0: 	EUsbMsState_Read = EUsbMsDriveState_Error + 100,
sl@0: 	EUsbMsState_Written
sl@0: 	};
sl@0: 	
sl@0: /**
sl@0:  An active object that subscribes to a specified Mass Storage property and
sl@0:  calls a provided handler each time the property is published.
sl@0:  */
sl@0: class CPropertyWatch : public CActive
sl@0: 	{
sl@0: public:
sl@0: 	static CPropertyWatch* NewLC(TUsbMsDriveState_Subkey aSubkey, CPropertyHandler& aHandler);
sl@0: 
sl@0: private:
sl@0: 	CPropertyWatch(CPropertyHandler& aHandler);
sl@0: 	void ConstructL(TUsbMsDriveState_Subkey aSubkey);
sl@0: 	~CPropertyWatch();
sl@0: 	void RunL();
sl@0: 	void DoCancel();
sl@0: 	
sl@0: 	RProperty iProperty;
sl@0: 	CPropertyHandler& iHandler;
sl@0: 	};
sl@0: 	
sl@0: /**
sl@0:  A property handler class that handles the change of ms drive status
sl@0:  */
sl@0:  class CPropertyHandler : public CBase
sl@0:  	{
sl@0:  public:
sl@0:  	virtual void HandleStatusChange(RProperty& aProperty) = 0;
sl@0:  	
sl@0:  protected:
sl@0:  	CPropertyHandler(TInt aDriveNo, CStateMachine& aSm);
sl@0:  	virtual ~CPropertyHandler();
sl@0:  
sl@0:  protected:
sl@0:  	TInt iDriveNo; 
sl@0:  	CStateMachine& iStateMachine;
sl@0:  	};
sl@0:  	
sl@0:  class CMsDriveStatusHandler : public CPropertyHandler
sl@0:  	{
sl@0:  public:
sl@0:  	static CMsDriveStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm);
sl@0:  	void HandleStatusChange(RProperty& aProperty);
sl@0:  	
sl@0:  protected:
sl@0:   	CMsDriveStatusHandler(TInt aDriveNo, CStateMachine& aSm);
sl@0:  	};
sl@0:  	
sl@0:  class CMsReadStatusHandler : public CPropertyHandler
sl@0:  	{
sl@0:  public:
sl@0:  	static CMsReadStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm);
sl@0:  	void HandleStatusChange(RProperty& aProperty);
sl@0:  	
sl@0:  private:
sl@0:   	CMsReadStatusHandler(TInt aDriveNo, CStateMachine& aSm);
sl@0:  	};
sl@0: 
sl@0:  class CMsWrittenStatusHandler : public CPropertyHandler
sl@0:  	{
sl@0:  public:
sl@0:  	static CMsWrittenStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm);
sl@0:  	void HandleStatusChange(RProperty& aProperty);
sl@0:  	
sl@0:  private:
sl@0:   	CMsWrittenStatusHandler(TInt aDriveNo, CStateMachine& aSm);
sl@0:  	};
sl@0: 
sl@0: #endif // __CPROPERTYWATCH_H__
sl@0: