/*

* 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 "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:   Command scheduler.

*

*/

#include "alfcommandscheduler.h"

#include "alf/alfcommand.h"

#include "alflogger.h"

#include <uiacceltk/HuiUtil.h>

// Internal flags.

enum TAlfSchedulerFlags

   {

   EAlfSchedulerPrimaryLightsOn        = 0x01,

   EAlfSchedulerSecondaryLightsOn      = 0x02,

   EAlfSchedulerApplicationForeground  = 0x04,

   EAlfSchedulerRunning                = 0x08

   };

// ======== CTimedEvent MEMBER FUNCTIONS ========

// ---------------------------------------------------------------------------

// NewLC

// ---------------------------------------------------------------------------

//

CAlfCommandScheduler::CTimedEvent* CAlfCommandScheduler::CTimedEvent::NewLC( 

            const TAlfCommand& aCommand,

            CAlfCommandScheduler& aScheduler )

    {

    CTimedEvent* self = new (ELeave) CTimedEvent(aScheduler);

    CleanupStack::PushL( self );

    self->ConstructL( aCommand );

    return self;

    }

// ---------------------------------------------------------------------------

// Destructor

// ---------------------------------------------------------------------------

//  

CAlfCommandScheduler::CTimedEvent::~CTimedEvent()

    {

    Cancel();

    delete iCommand;

    }

// ---------------------------------------------------------------------------

// Constructor

// ---------------------------------------------------------------------------

//  

CAlfCommandScheduler::CTimedEvent::CTimedEvent( CAlfCommandScheduler& aScheduler )

 : CTimer( EPriorityStandard ), iScheduler( aScheduler )

    {

    CActiveScheduler::Add( this );

    }

// ---------------------------------------------------------------------------

// ConstructL

// ---------------------------------------------------------------------------

//  

void CAlfCommandScheduler::CTimedEvent::ConstructL(const TAlfCommand& aCommand)

    {

    CTimer::ConstructL();

    // Make a copy of the command.

    TAlfCommand* data = (TAlfCommand*) new (ELeave) TUint8[aCommand.Size()];

    Mem::Copy((TAny*)data, (TAny*)&aCommand, aCommand.Size());

    iCommand = data;

    }

// ---------------------------------------------------------------------------

// Called when timer triggers.

// ---------------------------------------------------------------------------

//   

void CAlfCommandScheduler::CTimedEvent::RunL()

    {

    iScheduler.ExecuteEventL( *iCommand );

    delete this;

    }

// ---------------------------------------------------------------------------

// Called when RunL leaves

// ---------------------------------------------------------------------------

//     

TInt CAlfCommandScheduler::CTimedEvent::RunError(TInt aError)

    {

    __ALFLOGSTRING1( "CAlfCommandScheduler::ExecuteEventL leaves with %d", aError )

    delete this;

    return aError;

    }

// ---------------------------------------------------------------------------

// Execute command after given timed.

// ---------------------------------------------------------------------------

//    

void CAlfCommandScheduler::CTimedEvent::ExecuteAfter( 

    TInt aIntervalInMilliSeconds, 

    TBool aStartPaused )

    {

    __ASSERT_ALWAYS( !IsActive(), USER_INVARIANT() );

    iTimeLeftInMilliSeconds = aIntervalInMilliSeconds; 

    // If the scheduler is not paused...

    if ( !aStartPaused )

        {

        // ...start the timer.

        After( aIntervalInMilliSeconds * 1000 );

        iLastStartTime.UniversalTime(); // Update the start-time stamp.

        }

    }

// ---------------------------------------------------------------------------

// Pauses the time

// ---------------------------------------------------------------------------

//    

void CAlfCommandScheduler::CTimedEvent::Pause()

    {

    // If not paused...

    if ( IsActive() )

        {

        // ... cancel the timer and update the time left.

        Cancel();

        TTime timeNow;

        timeNow.UniversalTime();

        iTimeLeftInMilliSeconds -= 

            timeNow.MicroSecondsFrom( iLastStartTime ).Int64()/1000;

        }

    }

// ---------------------------------------------------------------------------

// Continue timer.

// ---------------------------------------------------------------------------

//    

void CAlfCommandScheduler::CTimedEvent::Continue()

    {

    // If not running...

    if ( !IsActive() )

        {

        // ... execute the event...

        if ( iTimeLeftInMilliSeconds <= 0 )

            {

            // ...now

            TRAP_IGNORE(iScheduler.ExecuteEventL( *iCommand ))

            delete this;

            }

        else

            {

            // ...after the time left.

            After( iTimeLeftInMilliSeconds * 1000 );

            iLastStartTime.UniversalTime(); // Update the start-time stamp.

            }

        }

    }

// ---------------------------------------------------------------------------

// Calculates the time left.

// ---------------------------------------------------------------------------

//    

TInt CAlfCommandScheduler::CTimedEvent::TimeLeftInMilliSeconds() const

    {

    TInt timeLeftInMilliSeconds = 0;

    if ( IsActive() )

        {

        TTime timeNow;

        timeNow.UniversalTime();

        timeLeftInMilliSeconds = 

            iTimeLeftInMilliSeconds - 

            timeNow.MicroSecondsFrom( iLastStartTime ).Int64()/1000;

        }

    else

        {

        timeLeftInMilliSeconds = iTimeLeftInMilliSeconds;

        }

    if ( timeLeftInMilliSeconds < 0 )

        {

        timeLeftInMilliSeconds = 0;

        }

    return timeLeftInMilliSeconds;

    }

// ======== CAlfCommandScheduler MEMBER FUNCTIONS ========

// ---------------------------------------------------------------------------

// NewL

// ---------------------------------------------------------------------------

//

CAlfCommandScheduler* CAlfCommandScheduler::NewL( CAlfEnv& aEnv)

    {

    CAlfCommandScheduler* self = new (ELeave) CAlfCommandScheduler( aEnv );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

// ---------------------------------------------------------------------------

// Constructor

// ---------------------------------------------------------------------------

//   

CAlfCommandScheduler::CAlfCommandScheduler( CAlfEnv& aEnv)

 : iEnv(aEnv)

    {

    }

// ---------------------------------------------------------------------------

// ConstructL

// Update internal flags.

// ---------------------------------------------------------------------------

//   

void CAlfCommandScheduler::ConstructL()

    {

    iLight = CHWRMLight::NewL(this); // Calls LightStatusChanged()

    iFlags |= EAlfSchedulerApplicationForeground;

    iFlags |= EAlfSchedulerRunning;

    // Workaround for non-working light status reports  

    iFlags |= EAlfSchedulerPrimaryLightsOn; 

    }

// ---------------------------------------------------------------------------

// Destructor

// ---------------------------------------------------------------------------

//    

CAlfCommandScheduler::~CAlfCommandScheduler()

    {

    iEvents.ResetAndDestroy();

    delete iLight;

    }

// ---------------------------------------------------------------------------

// Executes given command after given time

// ---------------------------------------------------------------------------

//   

void CAlfCommandScheduler::ScheduleCommandL( 

    const TAlfCommand& aCommand, 

    TInt aTimeInMilliSeconds )

    {

    if (aTimeInMilliSeconds == 0)

        {

        __ALFLOGSTRING( "CAlfCommandScheduler::ScheduleCommandL execute now" )

        // Execute now

        aCommand.ExecuteL( iEnv );

        return;

        }

    // Create timed event

    __ALFLOGSTRING1( "CAlfCommandScheduler::ScheduleCommandL in %dms", aTimeInMilliSeconds )

    CTimedEvent* event = CTimedEvent::NewLC( aCommand, *this );

    iEvents.AppendL( event );

    CleanupStack::Pop( event );

    event->ExecuteAfter( aTimeInMilliSeconds, !(iFlags&EAlfSchedulerRunning) );

    }

// ---------------------------------------------------------------------------

// Cancel all object commands.

// ---------------------------------------------------------------------------

//    

void CAlfCommandScheduler::CancelCommands( TAny* aObject )

    {

    for ( TInt i = iEvents.Count() - 1; i >= 0; i--)

        {

        const TAlfObjectCommand* objectCommand = 

            iEvents[i]->iCommand->ObjectCommand();

        if(objectCommand && objectCommand->Object() == aObject)

            {

            delete iEvents[i];

            iEvents.Remove( i );

            }

        }

    iEvents.Compress();

    }

// ---------------------------------------------------------------------------

// Cancels specific operation for given object

// ---------------------------------------------------------------------------

//    

void CAlfCommandScheduler::CancelCommands(TAny* aObject, TAlfOp aCommandOperation)

    {

    for(TInt i = iEvents.Count() - 1; i >= 0; --i)

        {

        const TAlfObjectCommand* objectCommand = 

            iEvents[i]->iCommand->ObjectCommand();

        if(objectCommand && 

           objectCommand->Object() == aObject &&

           objectCommand->Operation() == aCommandOperation)

            {

            // Cancel this one.

            delete iEvents[i];

            iEvents.Remove( i );

            }

        }

    iEvents.Compress();

    }

// ---------------------------------------------------------------------------

// Cancels given command types from given object

// ---------------------------------------------------------------------------

//    

void CAlfCommandScheduler::CancelCommands(TAny* aObject,

                                   TAlfCommandType aCommandType,

                                   TInt aParam)

    {

    for(TInt i = iEvents.Count() - 1; i >= 0; --i)

        {

        const TAlfObjectCommand* objectCommand = 

            iEvents[i]->iCommand->ObjectCommand();

        if(objectCommand && 

           objectCommand->Object() == aObject &&

           objectCommand->Type() == aCommandType)

            {

            if(objectCommand->Type() == EAlfCommandTypeCustomEvent)

                {

                const TAlfCustomEventCommand* cec = 

                    (const TAlfCustomEventCommand*) objectCommand;

                if(cec->Param() != aParam)

                    {

                    // Not this one, wrong parameter.

                    continue;

                    }

                }

            // Cancel this one.

            delete iEvents[i];

            iEvents.Remove( i );

            }

        }

    iEvents.Compress();

    }

// ---------------------------------------------------------------------------

// Returns time left ot the command

// ---------------------------------------------------------------------------

//     

TInt CAlfCommandScheduler::MilliSecondsUntilCommand( 

        TAny* aObject )

    {

    TInt returnValue = KErrNotFound;

    for ( TInt i = iEvents.Count() - 1; i >= 0; i--)

        {

        const TAlfObjectCommand* objectCommand = 

            iEvents[i]->iCommand->ObjectCommand();

        if(objectCommand && objectCommand->Object() == aObject)

            {

            TInt timeLeft = iEvents[i]->TimeLeftInMilliSeconds();

            if ( returnValue == KErrNotFound || timeLeft < returnValue )

                {

                returnValue = timeLeft;

                }

            }

        }

    return returnValue;

    }

// ---------------------------------------------------------------------------

// Returns time left ot the command

// ---------------------------------------------------------------------------

//    

TInt CAlfCommandScheduler::MilliSecondsUntilCommand( 

        TAny* aObject, 

        TAlfOp aCommandOperation )

    {

    TInt returnValue = KErrNotFound;

    for(TInt i = iEvents.Count() - 1; i >= 0; --i)

        {

        const TAlfObjectCommand* objectCommand = 

            iEvents[i]->iCommand->ObjectCommand();

        if(objectCommand && 

           objectCommand->Object() == aObject &&

           objectCommand->Operation() == aCommandOperation)

            {

            TInt timeLeft = iEvents[i]->TimeLeftInMilliSeconds();

            if ( returnValue == KErrNotFound || timeLeft < returnValue )

                {

                returnValue = timeLeft;

                }

            }

        }

    return returnValue;

    }

// ---------------------------------------------------------------------------

// Returns time left ot the command

// ---------------------------------------------------------------------------

//      

TInt CAlfCommandScheduler::MilliSecondsUntilCommand( 

        TAny* aObject, 

        TAlfCommandType aCommandType, 

        TInt aParam )

    {

    TInt returnValue = KErrNotFound;

    for(TInt i = iEvents.Count() - 1; i >= 0; --i)

        {

        const TAlfObjectCommand* objectCommand = 

            iEvents[i]->iCommand->ObjectCommand();

        if(objectCommand && 

           objectCommand->Object() == aObject &&

           objectCommand->Type() == aCommandType)

            {

            if(objectCommand->Type() == EAlfCommandTypeCustomEvent)

                {

                const TAlfCustomEventCommand* cec = 

                    (const TAlfCustomEventCommand*) objectCommand;

                if(cec->Param() != aParam)

                    {

                    // Not this one, wrong parameter.

                    continue;

                    }

                }

            TInt timeLeft = iEvents[i]->TimeLeftInMilliSeconds();

            if ( returnValue == KErrNotFound || timeLeft < returnValue )

                {

                returnValue = timeLeft;

                }

            }

        }

    return returnValue;

    }

// ---------------------------------------------------------------------------

// Executes command

// ---------------------------------------------------------------------------

//  

void CAlfCommandScheduler::ExecuteEventL( TAlfCommand& aCommand )

    { 

    for ( TInt i = 0 ; i < iEvents.Count() ; i++ )

        {

        if ( iEvents[i]->iCommand == &aCommand )

            {

            iEvents.Remove( i );

            iEvents.Compress();

            break;

            }

        }

    aCommand.ExecuteL( iEnv );

    }     

// ---------------------------------------------------------------------------

// Called when foreground status changes.

// ---------------------------------------------------------------------------

//    

void CAlfCommandScheduler::AppicationOnForeground( TBool aForeground )

    {

    if ( aForeground )

        {

        iFlags |= EAlfSchedulerApplicationForeground;

        }

    else

        {

        iFlags &= ~EAlfSchedulerApplicationForeground;

        }

    UpdateSchedulerState();

    }

// ---------------------------------------------------------------------------

// Called when display light status changes.

// ---------------------------------------------------------------------------

//    

void CAlfCommandScheduler::LightStatusChanged(

    TInt aTarget, 

    CHWRMLight::TLightStatus aStatus )

    {

    if( aTarget&CHWRMLight::EPrimaryDisplay )

        {

        if( aStatus == CHWRMLight::ELightOn || 

            aStatus == CHWRMLight::ELightStatusUnknown )

            {

            iFlags |= EAlfSchedulerPrimaryLightsOn;

            }

        else if( aStatus == CHWRMLight::ELightOff )

            {

            iFlags &= ~EAlfSchedulerPrimaryLightsOn;

            }

        else

            {

            // for PC lint

            }

        }

    if( aTarget&CHWRMLight::ESecondaryDisplay )

        {

        if( aStatus == CHWRMLight::ELightOn || 

            aStatus == CHWRMLight::ELightStatusUnknown )

            {

            iFlags |= EAlfSchedulerSecondaryLightsOn;

            }

        else if( aStatus == CHWRMLight::ELightOff )

            {

            iFlags &= ~EAlfSchedulerSecondaryLightsOn;

            }

        else

            {

            // for PC lint

            }

        }

    UpdateSchedulerState();

    }

// ---------------------------------------------------------------------------

// Updates scheduling state based on the internal flags.

// ---------------------------------------------------------------------------