/*

* Copyright (c) 2002-2005 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:  Hardware Resource Manager stub plugins Power State plugin 

*                implementation.

*

*/

#include <hwrmpowerstatesdkpskeys.h>

#include "PowerStatePlugin.h"

//CONSTANTS

#ifdef ENABLE_NOTIFICATIONS

    // Timer begins triggering notifications after this time period

    const TInt KDelay(5000000);      //5 seconds

    // Timer triggers notifications at this time interval

    const TInt KInterval(5000000);   //5 seconds

#endif

CPowerStatePlugin* CPowerStatePlugin::NewL()

    {

    CPowerStatePlugin* self = new(ELeave) CPowerStatePlugin();

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

CPowerStatePlugin::~CPowerStatePlugin()

    {

#ifdef ENABLE_NOTIFICATIONS

    delete iPeriodic;

#endif

    }

CPowerStatePlugin::CPowerStatePlugin() : iKey( KHWRMBatteryLevel ),

                                         iKeyValue( EBatteryLevelUnknown )

    {

    }

void CPowerStatePlugin::ConstructL()

    {

    // Only send periodic notifications if flag is defined

#ifdef ENABLE_NOTIFICATIONS

    RDebug::Print( _L("HWRM PowerStatePlugin: Notifications enabled.") );

    // Use CPeriodic to generate state changes

    iPeriodic = CPeriodic::NewL( CActive::EPriorityStandard );

    // Start the timer after KDelay and for every KInterval

    iPeriodic->Start( KDelay, KInterval,

                      TCallBack( CPowerStatePlugin::Callback, this ) );

#else

    RDebug::Print( _L("HWRM PowerStatePlugin: Notifications disabled.") );

#endif

    }

TInt CPowerStatePlugin::Callback( TAny* aPtr )

    {

    CPowerStatePlugin* ptr = (CPowerStatePlugin*) aPtr;

    // use callback to call the notification method in the plugin callback

    RDebug::Print( _L("HWRM PowerStatePlugin: Key=%d, Value=%d"), ptr->iKey, ptr->iKeyValue );

    TRAPD( err, ptr->iNotificationCallback->NotifyStateChange(

                                                ptr->iKey, ptr->iKeyValue ) );

    ptr->IncrementKeyAndValue();

    return err;

    }

void CPowerStatePlugin::IncrementKeyAndValue()

    {

    switch( iKey )

        {

        case KHWRMBatteryLevel:

            {

            // key has values -1 to 7

            if( iKeyValue == EBatteryLevelLevel7 )

                {

                // last value so set next key

                iKey = KHWRMBatteryStatus;

                iKeyValue = EBatteryStatusUnknown;

                }

            else

                {

                // Otherwise just increment it

                iKeyValue++;

                }

            break;

            }

        case KHWRMBatteryStatus:

            {

            // key has values -1 to 2

            if( iKeyValue == EBatteryStatusEmpty )

                {

                // last value so set next key

                iKey = KHWRMChargingStatus;

                iKeyValue = EChargingStatusError;

                }

            else

                {

                // Otherwise just increment it

                iKeyValue++;

                }

            break;

            }

        case KHWRMChargingStatus:

            {

            // key has values -1 to 5

            if( iKeyValue == EChargingStatusChargingContinued )

                {

                // last value so set next key

                iKey = KHWRMBatteryLevel;

                iKeyValue = EBatteryLevelUnknown;

                }

            else

                {

                // Otherwise just increment it

                iKeyValue++;

                }

            break;

            }

        default:

            break;

        }

    }