// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

/**

 @file

 @internalTechnology 

*/

#ifndef BATTERYMEASUREMENTSAO_H_

#define BATTERYMEASUREMENTSAO_H_

// INCLUDES

#include <e32base.h>

#include "HWRMPowerClientServer.h"

#include "HWRMClient.h"

// FORWARD DECLARATIONS

class RHWRMClient;

class CHWRMBatteryMeasurementsAO : public CActive 

	{

public:  

	virtual ~CHWRMBatteryMeasurementsAO();

public:  

   /**  

 	*      	 

 	* Issue an asynchronous request to hwrm server to retrieve 

 	* measurements.    	     	 

 	* When hwrm server completes the request, the (derived) active object will 

 	* be signalled and its RunL() will be invoked, which in turn will notify

 	* the battery observer    	       

 	*/         	    

    virtual void GetAsyncBatch(TInt aCommand) = 0;

    //Interface for changing the callback pointer.

    //TAny* is used, since callbacks are not derived from common base class.

    virtual void SetCallBack(TAny* aCallBack);

   /**  

 	*      	 

 	* Issue a synchronous request to the hwrm server to cancel 

 	* any outstanding GetMeasurements requests.

 	*/     

    void SendCancel(TInt aCommand);

#ifdef SYMBIAN_HWRM_EXTPOWERINFO 

    //If measurements are stopped by HWRM (because of charger disconnected,...)

    //complete the callback with KErrCancel.

    virtual void CancelClientNotification();

#endif //SYMBIAN_HWRM_EXTPOWERINFO

protected:

	CHWRMBatteryMeasurementsAO(RHWRMClient& aClient); 

    TUint iCount;

	TPckg<TUint> iCountPckg;

    RHWRMClient& iClient;

	};

template<typename T>

NONSHARABLE_CLASS(CHWRMBatteryMeasurementsAttributeAO):public CHWRMBatteryMeasurementsAO

        {

        typedef TFixedArray<T,20> TMeasurementsArray;

        public:

        CHWRMBatteryMeasurementsAttributeAO(RHWRMClient& aClient);

        /**  

        *        

        * Issue an asynchronous request to hwrm server to retrieve 

        * measurements.                  

        * When hwrm server completes the request, the (derived) active object will 

        * be signalled and its RunL() will be invoked, which in turn will notify

        * the battery observer                 

        */                  

        void GetAsyncBatch(TInt aCommand); 

        protected:

        TMeasurementsArray iResultsArray;//accessed in derived classes

        private:

        TPckg<TMeasurementsArray> iMeasurementsArrayPckg;

        };

#endif /*BATTERYMEASUREMENTSAO_H_*/