/*

* 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:   

*

*/

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

//

// class CProfilerEngineStatusChecker

//

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

//

inline CProfilerEngineStatusChecker* CProfilerEngineStatusChecker::NewL()

    {

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

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

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

inline CProfilerEngineStatusChecker::CProfilerEngineStatusChecker() :

    CActive(EPriorityStandard)

    {

    }

inline CProfilerEngineStatusChecker::~CProfilerEngineStatusChecker()

    {

    Cancel();

    iEngineStatus.Close();

    }

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

inline void CProfilerEngineStatusChecker::ConstructL()

    {

    User::LeaveIfError(iEngineStatus.Attach(KEngineStatusPropertyCat, EProfilerEngineStatus));

    CActiveScheduler::Add(this);

    // check engine status, if not available set to idle

    if(iEngineStatus.Get(iPrevStat) != KErrNone)

        {

        iPrevStat = MProfilerStatusObserver::EIdle;

        }

    // subscribe to P&S status property

    iEngineStatus.Subscribe(iStatus);

    SetActive();

    }

inline TInt CProfilerEngineStatusChecker::GetInitialState()

    {

    // check engine status, if not available set to idle

    TInt err(iEngineStatus.Get(KEngineStatusPropertyCat, EProfilerEngineStatus, iPrevStat));

    if(err != KErrNone)

        {

        iPrevStat = MProfilerStatusObserver::EIdle;

        }

    return iPrevStat;

    }

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

inline void CProfilerEngineStatusChecker::RunL()

    {

    // resubscribe before processing new value to prevent missing updates

    iEngineStatus.Subscribe(iStatus);

    SetActive();

    TInt stat(0);

    if(iEngineStatus.Get(KEngineStatusPropertyCat, EProfilerEngineStatus, stat) == KErrNone)

        {

        // check if status one of error codes (< 0)

        if(stat < KErrNone)

            {

            // some error occurred on engine side => set UI idle and show an error note

            iObserver->HandleProfilerErrorL(stat);

            }

        else

            {

            if(iPrevStat != stat)

                {

                switch(stat)

                    {

                    case 0:

                        iObserver->HandleProfilerStatusChange(MProfilerStatusObserver::EIdle);

                        break;

                    case 1:

                        iObserver->HandleProfilerStatusChange(MProfilerStatusObserver::EInitializing);

                        break;

                    case 2:

                        iObserver->HandleProfilerStatusChange(MProfilerStatusObserver::ERunning);

                        break;

                    case 3:

                        iObserver->HandleProfilerStatusChange(MProfilerStatusObserver::EStopping);

                        break;

                    default:

                        iObserver->HandleProfilerErrorL(stat);

                        break;

                    }

                iPrevStat = stat;

                }

            }

        }

    }

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

inline void CProfilerEngineStatusChecker::DoCancel()

    {

    iEngineStatus.Cancel();

    }

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

inline void CProfilerEngineStatusChecker::SetObserver(MProfilerStatusObserver* aObserver)

    {

    iObserver = aObserver;

    }