/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#ifndef POWEROBSERVER_H

#define POWEROBSERVER_H

// INCLUDES

#include <e32base.h>

#include <etel3rdparty.h>

#include <npscript.h>

#include "SystemInfoObserver.h"

// FORWARD DECLARATIONS

class CSystemInfoPlugin;

// CONSTANTS

// State enum and member variable

// CLASS DECLARATIONS

/**

*  CPowerObserver.

*  Interface to information about power and battery.

*  @lib npSystemInfoPlugin.lib

*  @since S60 v3.2

*/

NONSHARABLE_CLASS(CPowerObserver) : public CBase, public MSystemInfoObserverClient

    {

public:

    /**

     * Two-phased constructor.

     */

    static CPowerObserver* NewL( CSystemInfoPlugin* aPlugin );

    /**

     * Destructor.

     */

    virtual ~CPowerObserver();

public:

    enum TIdPowerItem

        {

        EIdBatteryInfo,

        EIdIndicator  // charger connected indicator

        };

    /**

     * Request power values change notification.

     * @since 3.2

     * @param name of the callback

     * @return void

     */

    void RequestNotificationL( TIdPowerItem aId, HBufC8* aFunctionName );

public:

    /**

     * Called to get battery charge level.

     * @since 3.2

     * @param void

     * @return charge level

     */

    TInt ChargeLevel() const;

    /**

     * Called to get charger connected flag.

     * @since 3.2

     * @param void

     * @return 1 if charger connected, 0 if not connected

     */

    TInt ChargerConnected() const;

public:

    // from MSystemInfoObserverClient

    virtual void SubscribeL( TInt aId, TRequestStatus& aStatus );

    virtual void UpdateL( TInt aId );

    virtual void Cancel( TInt aId );

    virtual void Close( TInt aId );

private:

    /**

     * C++ default constructor.

     */

    CPowerObserver( CSystemInfoPlugin* aPlugin );

    /**

     * By default Symbian 2nd phase constructor is private.

     * @param none

     * @return void

     */

    void ConstructL();

public:

    CSystemInfoPlugin* iSystemInfoPlugin;

    CTelephony* iTelephony; // owned

    CTelephony* iTelephony2; // owned

    // battery

    CTelephony::TBatteryInfoV1Pckg iBatteryInfoPckg;

    CTelephony::TBatteryInfoV1 iBatteryInfo;

    CSystemInfoObserver* iBatteryInfoObserver; // owned

    HBufC8* iBatteryInfoChangedFunction;

    TInt iBatteryInfoStarted;

    // charger

    CTelephony::TIndicatorV1Pckg iIndicatorPckg;

    CTelephony::TIndicatorV1 iIndicator;

    CSystemInfoObserver* iIndicatorObserver; // owned

    HBufC8* iIndicatorChangedFunction;

    TInt iIndicatorStarted;

   };

#endif // POWEROBSERVER_H

// End of File