/*

* Copyright (c) 2009 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:

* Implementation of CSsmPsKeyObserver class.

*

*/

#include "ssmpskeyobserver.h"

#include "trace.h"

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

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

// CSsmPsKeyObserver::CSsmPsKeyObserver

//

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

//

CSsmPsKeyObserver::CSsmPsKeyObserver( TUid aCategory, TUint aKey )

  : CActive( EPriorityHigh ),

    iCategory( aCategory ),

    iKey( aKey )

    {

    FUNC_LOG;

    CActiveScheduler::Add( this );

    }

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

// CSsmPsKeyObserver::~CSsmPsKeyObserver

//

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

//

CSsmPsKeyObserver::~CSsmPsKeyObserver()

    {

    FUNC_LOG;

    Cancel();

    iProperty.Close();

    Complete( KErrCancel ); // Just in case

    }

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

// CSsmPsKeyObserver::StartObserving

//

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

//

void CSsmPsKeyObserver::StartObserving( TRequestStatus& aStatus )

    {

    FUNC_LOG;

    ASSERT_TRACE( !IsActive() );

    aStatus = KRequestPending;

    iClientStatus = &aStatus;

    TInt errorCode = iProperty.Attach( iCategory, iKey );

    ERROR_2( errorCode, "Failed to attach to property 0x%08x::0x%08x", 

             iCategory.iUid, iKey );

    if ( errorCode == KErrNone )

        {

        CheckKeyValue();

        }

    else

        {

        Complete( errorCode );

        }

    }

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

// CSsmPsKeyObserver::DoCancel

//

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

//

void CSsmPsKeyObserver::DoCancel()

    {

    FUNC_LOG;

    iProperty.Cancel();

    Complete( KErrCancel );

    }

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

// CSsmPsKeyObserver::RunL

//

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

//

void CSsmPsKeyObserver::RunL()

    {

    FUNC_LOG;

    INFO_1( "CSsmPsKeyObserver::iStatus = %d", iStatus.Int() );

    if ( iStatus == KErrCancel ||

         iStatus == KErrServerTerminated ||

         iStatus ==KErrNotSupported )

        {

        Complete( iStatus.Int() );

        }

    else

        {

        CheckKeyValue();

        }

    }

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

// CSsmPsKeyObserver::CheckKeyValue

//

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

//

void CSsmPsKeyObserver::CheckKeyValue()

    {

    FUNC_LOG;

    ASSERT( !IsActive() );

    iProperty.Subscribe( iStatus );

    SetActive();

    TInt value( -KMaxTInt );

    TInt errorCode = iProperty.Get( value );

    ERROR_2( errorCode, "Failed to get value of property 0x%08x::0x%08x",

             iCategory.iUid, iKey );

    if ( errorCode != KErrNone || IsMatch( value ) )

        {

        INFO_3( "Property 0x%08x::0x%08x reached the target value %d.", 

                 iCategory.iUid, iKey, value );

        Complete( errorCode );

        Cancel();

        }

    else

        {

        INFO_3( "Value of property 0x%08x::0x%08x is %d. Waiting...",

                 iCategory.iUid, iKey, value );

        }

    }

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

// CSsmPsKeyObserver::Complete

//

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

//

void CSsmPsKeyObserver::Complete( const TInt aErrorCode )

    {

    FUNC_LOG;

    if ( iClientStatus )

        {

        INFO_1( "Completing request with status %d", aErrorCode );

        User::RequestComplete( iClientStatus, aErrorCode );

        iClientStatus = NULL;

        }

    }