/*

* Copyright (c) 2008-2008 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:  A class to watch changes of a integer property.

*

*/

#include    <e32base.h>

#include    <e32def.h>

#include "AccSrvPSIntPropertyWatch.h"

#include "acc_debug.h"

// ======== LOCAL FUNCTIONS ========

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

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

// Symbian two-phased constructor

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

//

CAccSrvPSIntPropertyWatch* CAccSrvPSIntPropertyWatch::NewL(

        MAccSrvPSIntPropertyObserver*   aObserver,

        TUid    aCategory,

        TInt    aKey,

        TOwnerType aType )

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::NewL()" );

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

    CleanupStack::PushL( self );

    self->ConstructL( aObserver, aCategory, aKey, aType );

    CleanupStack::Pop( self );

    COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::NewL - return %p", self );

    return self;

    }

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

// Symbian two-phased constructor

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

//

CAccSrvPSIntPropertyWatch* CAccSrvPSIntPropertyWatch::NewLC(

        MAccSrvPSIntPropertyObserver*   aObserver,

        TUid    aCategory,

        TInt    aKey,

        TOwnerType aType )

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::NewLC()" );

    CAccSrvPSIntPropertyWatch* self = new( ELeave ) CAccSrvPSIntPropertyWatch;

    CleanupStack::PushL( self );

    self->ConstructL( aObserver, aCategory, aKey, aType );

    COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::NewLC - return %p", self );

    return self;

    }

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

// Destructor

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

//

CAccSrvPSIntPropertyWatch::~CAccSrvPSIntPropertyWatch()

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::~CAccSrvPSIntPropertyWatch()" );

    Cancel();

    iProperty.Close();

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::~CAccSrvPSIntPropertyWatch" );

    }

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

// SubscribeNotification

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

//

void CAccSrvPSIntPropertyWatch::Watch()

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::Watch()" );

    iProperty.Subscribe(iStatus);

    SetActive();

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::Watch - return void" );

    return;

    }

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

// Get current value.

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

//

TInt CAccSrvPSIntPropertyWatch::GetCurrentValue( TInt& aValue)

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::GetCurrentValue()" );

    TInt value = 0;

    TInt error( iProperty.Get( value ) );

    if ( KErrNone == error )

        {

        // use new value ...

        COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::GetCurrentValue - value 0x%x", value );

        aValue = value;

        }

    else if ( KErrNotFound == error )

        {

        // property deleted, do necessary actions here...

        iObserver->PSPropertyDeleted( iCategory, iKey );

        }

    COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::GetCurrentValue - return aError %d", error );

    return error;

    }

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

// From class CActive.

// DoCancel

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

//

void CAccSrvPSIntPropertyWatch::DoCancel()

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::DoCancel()" );

    iProperty.Cancel();

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::DoCancel - return void" );

    }

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

// C++ constructor

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

//

CAccSrvPSIntPropertyWatch::CAccSrvPSIntPropertyWatch()

    :CActive ( EPriority )

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::CAccSrvPSIntPropertyWatch()" );

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::CAccSrvPSIntPropertyWatch - return" );

    }

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

// ConstructL

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

//

void CAccSrvPSIntPropertyWatch::ConstructL(

        MAccSrvPSIntPropertyObserver*   aObserver,

        TUid    aCategory,

        TInt    aKey,

        TOwnerType aType )

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::ConstructL()" );

    iObserver = aObserver;

    iCategory = aCategory;

    iKey = aKey;    

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

    CActiveScheduler::Add(this);

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::ConstructL - return void" );

    return;

   }

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

// From class CActive.

// RunL

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

//

void CAccSrvPSIntPropertyWatch::RunL()

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::RunL()" );

    // resubscribe before processing new value to prevent missing updates

    iProperty.Subscribe(iStatus);

    SetActive();

    // property updated, get new value

    TInt value;

    if ( iProperty.Get( value ) == KErrNotFound )

        {

        // property deleted, do necessary actions here...

        iObserver->PSPropertyDeleted( iCategory, iKey );

        }

    else

        {

        // use new value ...

        iObserver->PSPropertyChanged( iCategory, iKey, value );

        }

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::RunL - return void" );

    }

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

// From class CActive.

// RunL

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

//

TInt CAccSrvPSIntPropertyWatch::RunError( TInt aError )

    {

    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::RunError()" );

    // Avoid Panic in CActiveScheduler

    aError = KErrNone;

    COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::RunError - return aError %d", aError );

    return aError;

    }

// ======== GLOBAL FUNCTIONS ========