/*

* Copyright (c) 2005 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 the process watcher

*

*/

#include <e32def.h>

#include <e32base.h>

#include <f32file.h>

#include <sysutil.h>

#include "procwatcher.h"

#include "drmlog.h"

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

void CProcWatcher::ConstructL( const TDesC& aProcess, const TDesC& aFile )

    {

    DRMLOG( _L( "CProcWatcher::ConstructL <-" ) );

    iProcessName.Copy( aProcess );

    iFileName.Copy( aFile );

    CActiveScheduler::Add( this );

    DRMLOG( _L( "CProcWatcher::ConstructL ->" ) );

    }

CProcWatcher* CProcWatcher::NewL( MWatcherObserver& aObserver, const TDesC& aProcess, const TDesC& aFile )

    {

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

    self->ConstructL( aProcess, aFile );

    return self;

    }

CProcWatcher::CProcWatcher( MWatcherObserver& aObserver ):

    CActive( EPriorityStandard ),

    iObserver( aObserver )

    {

    DRMLOG( _L( "CProcWatcher::CProcWatcher ->" ) );

    DRMLOG( _L( "CProcWatcher::CProcWatcher <-" ) );

    }

CProcWatcher::~CProcWatcher()

    {

    DRMLOG( _L( "CProcWatcher::~CProcWatcher ->" ) );

    Cancel();

    DRMLOG( _L( "CProcWatcher::~CProcWatcher <-" ) );

    }

TInt CProcWatcher::StartWatching()

    {

    TFullName name;

    TFindProcess finder( iProcessName );

    TInt r = KErrNone;

    DRMLOG( _L( "CProcWatcher::StartWatching ->" ) );

    DRMLOG( iProcessName );

    r = finder.Next( name );

    if ( r != KErrNone )

        {

        r = iProcess.Create( iFileName, KNullDesC );

        if ( r == KErrNone )

            {

            iProcess.Resume();

            }

        }

    else

        {

        iProcessName.Copy( name );

        DRMLOG( iProcessName );

        r = iProcess.Open( iProcessName );

        }

    if ( r == KErrNone )

        {

        iProcess.Logon( iStatus );

        SetActive();

        DRMLOG( _L( "Active " ) );

        }

    DRMLOG( _L( "CProcWatcher::StartWatching <-" ) );

    return r;

    }

void CProcWatcher::DoCancel()

    {

    DRMLOG( _L( "CProcWatcher::DoCancel ->" ) );

    DRMLOG( _L( "CProcWatcher::DoCancel <-" ) );

    }

void CProcWatcher::RunL()

    {

    TBuf<256> logBuffer;

    TFileName object;

    DRMLOG( _L( "CProcWatcher::RunL ->" ) );

    DRMLOG( iProcessName );

    logBuffer.AppendNum( iStatus.Int() );

    logBuffer.Append( ' ' );

    logBuffer.AppendNum( iProcess.ExitType() );

    DRMLOG( logBuffer );

    if ( iProcess.ExitType() != EExitPending )

        {

        object.Copy( KProcIdentifier );

        object.Append( iProcessName );

        iObserver.WatchedObjectChangedL( object );

        }

    else

        {

        if ( iProcess.Open( iProcessName ) == KErrNone )

            {

            iProcess.Logon( iStatus );

            }

        }

    SetActive();

    DRMLOG( _L( "CProcWatcher::RunL <-" ) );

    }