/*

* 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:  Monitors an application exit event.

*

*/

#include <mpxlog.h>                     // MPX_DEBUG

#include <e32base.h>

#include <e32std.h>

#include <apacmdln.h>

#include <apgtask.h>

#include <AknTaskList.h>

#include "applicationmonitor.h"

#include "applicationmonitorobserver.h"

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

// Constructor

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

//

CApplicationMonitor::CApplicationMonitor( MApplicationMonitorObserver& aObserver)

        : CActive( EPriorityNormal ),

        iObserver( aObserver )

    {

    }

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

// Second Phase Constructor

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

//

void CApplicationMonitor::ConstructL()

    {

    CActiveScheduler::Add( this );

    }

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

// Two-phased constructor

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

//

CApplicationMonitor* CApplicationMonitor::NewL( MApplicationMonitorObserver& aObserver)

    {

    MPX_DEBUG1("CApplicationMonitor::NewL <---");

    CApplicationMonitor* self = new( ELeave ) CApplicationMonitor( aObserver);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    MPX_DEBUG1("CApplicationMonitor::NewL --->");

    return self;

    }

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

// Destructor

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

//

CApplicationMonitor::~CApplicationMonitor()

    {

    MPX_DEBUG1("CApplicationMonitor::~CApplicationMonitor <---");

    Cancel();

    iThread.Close();

    MPX_DEBUG1("CApplicationMonitor::~CApplicationMonitor --->");

    }

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

// Starts monitoring a particular Application

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

//

void CApplicationMonitor::StartL( TUid aAppUid , TBool aRootAppIndication )

    {

    MPX_DEBUG1("CApplicationMonitor::StartL <---");

    RWsSession wsSession;

    User::LeaveIfError( wsSession.Connect() );

    TUint64 threadId(0);

    TBool taskExists(EFalse);

    TInt status = KErrNone;

    iAppUid = aAppUid;

    if(aRootAppIndication)

        {

        CAknTaskList* taskList = CAknTaskList::NewL( wsSession );

        TApaTask task = taskList->FindRootApp( aAppUid );

        delete taskList;

        taskExists = task.Exists();

        threadId = task.ThreadId().Id();

        }

    else

        {

        TApaTaskList taskList( wsSession );

        TApaTask task = taskList.FindApp( aAppUid );

        taskExists = task.Exists();

        threadId = task.ThreadId().Id();

        }

    wsSession.Close();

    if (taskExists)

        {

        MPX_DEBUG1("CApplicationMonitor::StartL app found");

        status = iThread.Open(TThreadId(threadId));

        if ( status == KErrNone )

        	{

        	iThread.Logon(iStatus);

        	SetActive();

			}

        }

    else

        {

        MPX_DEBUG1("CApplicationMonitor::StartL not app found");

        User::Leave(KErrNotFound);

        }

    MPX_DEBUG1("CApplicationMonitor::StartL --->");

    }

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

// RunL callback

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

//

void CApplicationMonitor::RunL()

    {

    MPX_DEBUG1("CApplicationMonitor::RunL <---");

    switch (iStatus.Int())

        {

        case EExitPending: 

            MPX_DEBUG1("CApplicationMonitor::RunL reason = EExitPending");

            iThread.Close();

            TRAPD(err, StartL( iAppUid ) );

            if (KErrNone != err)

                {

                MPX_DEBUG1("CApplicationMonitor::RunL reason = EExitPending but thread is really gone");

                iObserver.HandleApplicationClosedL((TExitType) iStatus.Int());

                }

            break;

        case KErrCancel:

            MPX_DEBUG1("CApplicationMonitor::RunL cancel");

            break;

        default:

        	  MPX_DEBUG2("CApplicationMonitor::RunL reason = %d", iStatus.Int());

        	  iObserver.HandleApplicationClosedL((TExitType) iStatus.Int());

            break;

        }

    MPX_DEBUG1("CApplicationMonitor::RunL --->");

    }

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

// Handle Cancelling

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

//

void CApplicationMonitor::DoCancel()

    {

    MPX_DEBUG1("CApplicationMonitor::DoCancel <---");

    // Stop monitoring

    iThread.LogonCancel(iStatus);

    MPX_DEBUG1("CApplicationMonitor::DoCancel --->");

    }

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

// Handles a leave occurring in the request completion event handler RunL()

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

//

TInt CApplicationMonitor::RunError(TInt /*aError*/)

    {

    MPX_DEBUG1("CApplicationMonitor::RunError <---");

    MPX_DEBUG1("CApplicationMonitor::RunError --->");

    return KErrNone;

    }