/*

* 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:   Observes the state of P&S property

*

*/

#include <e32cmn.h>

#include <vccsubscribekeys.h>

#include "vccengpspropertylistener.h"

#include "rubydebug.h"

//#include "vccuipropertyhandler.pan"

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

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

// C++ constructor

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

//

CVccEngPsPropertyListener::CVccEngPsPropertyListener( 

const TUid aCategoryUid,

		const TUint aKeyId ):

CActive( EPriorityStandard ),

iCategoryId( aCategoryUid ),

iKeyId( aKeyId )

	{

	RUBY_DEBUG_BLOCK( "VccEngPsPropertyListener::CVccEngPsPropertyListener" );

	}

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

// 2nd phase constructor

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

//

void CVccEngPsPropertyListener::ConstructL()

    {

    RUBY_DEBUG_BLOCKL( "CVccEngPsPropertyListener::ConstructL" );

    // Attach to categroy and key.

    User::LeaveIfError( iProperty.Attach( iCategoryId, iKeyId ));

    // Add to active scheduler

    CActiveScheduler::Add( this );

    }

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

// Constructor

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

//

CVccEngPsPropertyListener* CVccEngPsPropertyListener::NewL(

		                                                 const TUid aCategoryId, 

		                                                 const TUint aKeyId)   

    {

	RUBY_DEBUG_BLOCKL("CVccEngPsPropertyListener::NewL");

	CVccEngPsPropertyListener* self = new (ELeave) CVccEngPsPropertyListener( 

			                                              aCategoryId, aKeyId );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Destructor

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

//

CVccEngPsPropertyListener::~CVccEngPsPropertyListener()

    {

    RUBY_DEBUG0( "CVccEngPsPropertyListener::~CVccEngPsPropertyListener() - ENTER" );

    Cancel();

    iProperty.Close();

    iObservers.Close();

    RUBY_DEBUG0( "CVccEngPsPropertyListener::~CVccEngPsPropertyListener() - EXIT" );

    }

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

// Add Vcc property observer

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

//

void CVccEngPsPropertyListener::AddObserverL( 

        MVccEngPsPropertyListenerObserver& aObserver )

    {

    RUBY_DEBUG_BLOCKL( "CVccEngPsPropertyListener::AddObserverL" );

    if ( iObservers.Find( &aObserver ) == KErrNotFound )

        {

        User::LeaveIfError( iObservers.Append( &aObserver ) );

        }

    }

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

// Removes observer

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

//

void CVccEngPsPropertyListener::RemoveObserver( 

        MVccEngPsPropertyListenerObserver& aObserver )

    {

    RUBY_DEBUG_BLOCK( "CVccEngPsPropertyListener::RemoveObserver" );

    TInt index = iObservers.Find( &aObserver );

    if ( index != KErrNotFound )

        {

        iObservers.Remove( index );

        }

    }

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

// Fetches the current value of the key

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

//

TInt CVccEngPsPropertyListener::CurrentValue()

    {

    RUBY_DEBUG_BLOCK( "CVccEngPsPropertyListener::CurrentValue" );

    TInt value( KErrNotFound );

    iProperty.Get( iCategoryId, iKeyId, value );

    return value;

    }

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

// Cancels the outstanding subsription request

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

//

void CVccEngPsPropertyListener::DoCancel()

    {

    RUBY_DEBUG0( "CVccEngPsPropertyListener::DoCancel - ENTER" );

    iProperty.Cancel();

    RUBY_DEBUG0( "CVccEngPsPropertyListener::DoCancel - EXIT" );

    }

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

// Subsribes to property

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

//

void CVccEngPsPropertyListener::Start()

    {

    RUBY_DEBUG_BLOCK( "CVccEngPsPropertyListener::Start" );

    // Subscribe to get updates.

    iProperty.Subscribe( iStatus );

    SetActive();

    }

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

// RunL

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

//

void CVccEngPsPropertyListener::RunL()

    {

    TInt err = iStatus.Int();

Start();

    RUBY_DEBUG_BLOCK( "CVccEngPsPropertyListener::RunL" );

    RUBY_DEBUG1( " - Status: %d", iStatus.Int() );

    if ( KErrNone == err )

        {

        RUBY_DEBUG0( " - CVccEngPsPropertyListener::RunL - \

                     if ( KErrNone == err )" );

        // Notify property changes to observers.

        NotifyObserversL();

        }

    }

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

// Notify all observers about the changed value

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

//

void CVccEngPsPropertyListener::NotifyObserversL()

    {

    RUBY_DEBUG_BLOCKL( "CVccEngPsPropertyListener::NotifyObserversL" );

    TInt value = CurrentValue();

    RUBY_DEBUG1( " - value [%d]", value );

    for ( TInt i(0) ; i < iObservers.Count() ; i++ )

        {

        MVccEngPsPropertyListenerObserver* observer = iObservers[i];

        if ( observer )

            {

            observer->PropertyChangedL( iCategoryId, iKeyId, value );

            }

        }

    }