/*

* 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:  Listens for changes to phone call state*

*/

// INCLUDE FILES

#include <e32base.h>

#include <e32std.h>

#include <eikenv.h>

#include "CamUtility.h"

#include "CamCallStateAo.h"

#include "CamPanic.h"

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES  

// CONSTANTS

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

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

#ifdef _DEBUG

void ExpandStateDebug( TPSCTsyCallState aVal )

    {

    switch ( aVal )

        {   

    case EPSCTsyCallStateUninitialized:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => Uninit") );

        break;

    case EPSCTsyCallStateNone:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => NONE") );

        break;

    case EPSCTsyCallStateAlerting:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => ALERTING") );

        break;

    case EPSCTsyCallStateRinging:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => RINGING") );

        break;

    case EPSCTsyCallStateDialling:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => DIALLING") );

        break;

    case EPSCTsyCallStateAnswering:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => ANSWERING") );

        break;

    case EPSCTsyCallStateDisconnecting:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => DISCONNECTING") );

        break;

    case EPSCTsyCallStateConnected:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => CONNECTED") );

        break;

    case EPSCTsyCallStateHold:

        PRINT(_L("Camera    CCamCallStateAo::RunL NEW STATUS => HOLD") );

        break;

        }

    }

#endif // _DEBUG

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

// CCamCallStateAo::CCamCallStateAo

// C++ default constructor can NOT contain any code, that might leave.

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

//

CCamCallStateAo::CCamCallStateAo( MCamCallStateObserver* aObserver ) : CActive( EPriorityStandard )

    {            

    PRINT( _L("Camera => CCamCallStateAo::CCamCallStateAo") );

    __ASSERT_DEBUG( aObserver != NULL, CamPanic(ECamPanicNullImage) );

    CActiveScheduler::Add( this );

    iObserver = aObserver;

    }

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

// CCamCallStateAo::NewL

// Two-phased constructor.

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

//

CCamCallStateAo* CCamCallStateAo::NewL( MCamCallStateObserver* aObserver )

    {

    CCamCallStateAo* self = new( ELeave ) CCamCallStateAo( aObserver );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// CCamSelfTimer::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CCamCallStateAo::ConstructL()

    {

    PRINT( _L("Camera => CCamCallStateAo::ConstructL") );

    TInt ret = iProperty.Attach( KPSUidCtsyCallInformation, KCTsyCallState );

    PRINT1( _L("CCamCallStateAo::ConstructL attaching property ret %d"), ret );

    if ( ret == KErrNone )

        {   

        // Will subscribe to the attribute required 

        RunL();

        }

    else

        {   

        // If an error occurred, we can't get call state info which we really need

        // so leave

        User::Leave( ret );

        }

    PRINT( _L("Camera <= CCamCallStateAo::ConstructL") );

    }

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

// CCamCallStateAo::~CCamCallStateAo

// Destructor

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

//

CCamCallStateAo::~CCamCallStateAo()

  {

  PRINT( _L("Camera => ~CCamCallStateAo") );

  Cancel();

  PRINT( _L("Camera <= ~CCamCallStateAo") );

  }

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

// CCamCallStateAo::DoCancel

// Cancels an outstanding request

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

//

void CCamCallStateAo::DoCancel()

    {

    iProperty.Close();

    }

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

// CCamCallStateAo::RunL

// Called when a request has completed.  

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

//

void CCamCallStateAo::RunL()

    {

    PRINT(_L("Camera => CCamCallStateAo::RunL") );

    iProperty.Subscribe( iStatus );

    PRINT(_L("Camera    CCamCallStateAo::RunL subscribed") );

    SetActive();

    PRINT(_L("Camera    CCamCallStateAo::RunL set active") );

    TInt val = KErrNotFound;

    TInt ret = iProperty.Get( val );

    if ( val != KErrNotFound && ret != KErrNotFound )

        {

        TPSCTsyCallState callState = static_cast<TPSCTsyCallState>( val );

#ifdef _DEBUG

        ExpandStateDebug( callState );

#endif

        PRINT(_L("Camera    CCamCallStateAo::RunL calling callback") );

        iObserver->CallStateChanged( callState, ret );

        PRINT(_L("Camera    CCamCallStateAo::RunL returned from callback") );

        }

    else

        {

        iObserver->CallStateChanged( EPSCTsyCallStateUninitialized, ret );

        }

    PRINT(_L("Camera <= CCamCallStateAo::RunL") );

    }

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

// CCamCallStateAo::RunError

// Called when an error has occurred.

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

//

TInt CCamCallStateAo::RunError( TInt aError )

    {

    iObserver->CallStateChanged( EPSCTsyCallStateUninitialized, aError );    

    return KErrNone;

    }

//  End of File