/*

* Copyright (c) 2005-2006 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:  Publish and subscribe parameter observer implementation.

*

*/

#include "caipspropertyobserver.h"

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

// void ConstructL( TCallBack aCallBack, TUid aCategory, TInt aKey )

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

//

void CPSPropertyObserver::ConstructL()

    {

    User::LeaveIfError( iProperty.Attach( iCategory, iKey ) );

    CActiveScheduler::Add( this );

    iProperty.Subscribe( iStatus );

    SetActive();

    }

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

// CPSPropertyObserver()

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

//

CPSPropertyObserver::CPSPropertyObserver( TCallBack aCallBack,

                                          TUid aCategory,

                                          TInt aKey )

  : CActive( EPriorityStandard ),

    iCallBack( aCallBack ),

    iCategory( aCategory ),

    iKey( aKey )

    {

    }

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

// CPSPropertyObserver* NewL( TCallBack aCallBack, TUid aCategory, TInt aKey )

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

//

CPSPropertyObserver* CPSPropertyObserver::NewL( TCallBack aCallBack,

                                                TUid aCategory,

                                                TInt aKey )

    { 

    CPSPropertyObserver* self = new ( ELeave ) CPSPropertyObserver( aCallBack,

                                                                    aCategory,

                                                                    aKey );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// ~CPSPropertyObserver()

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

//

CPSPropertyObserver::~CPSPropertyObserver()

    {

    if( IsAdded() )

        {

        Deque();

        }

    iProperty.Close();

    }

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

// void Release()

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

//

void CPSPropertyObserver::Release()

    {

    delete this;

    }

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

// void RunL()

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

//

void CPSPropertyObserver::RunL()

    {

    // resubscribe before processing new value to prevent missing updates.

    iProperty.Subscribe( iStatus );

    SetActive();

    // property updated, get new value.

    TInt propval;

    if ( iProperty.Get( iCategory, iKey, propval ) != KErrNotFound )

        {

        iCallBack.CallBack();

        }

    }

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

// void DoCancel()

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

//

void CPSPropertyObserver::DoCancel()

    {

    iProperty.Cancel();

    }

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

// TInt Get( TInt& aValue )

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

//

TInt CPSPropertyObserver::Get( TInt& aValue )

    { 

	TInt error = iProperty.Get( iCategory, iKey, aValue );

    return error;

    }

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

// TInt Get( TDes8& aString )

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

//

TInt CPSPropertyObserver::Get( TDes8& aString )

	{ 

	TInt error = iProperty.Get( iCategory, iKey, aString );

    return error;

    }

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

// TInt Get( TDes16& aString )

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

//

TInt CPSPropertyObserver::Get( TDes16& aString )

    { 

	TInt error = iProperty.Get( iCategory, iKey, aString );

    return error;

    }

// ========== OTHER EXPORTED FUNCTIONS ========================================

// End of File.