/*

* Copyright (c) 2008-2010 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:   This module contains the implementation of CIAUpdateStarter class 

*                member functions.

*

*/

//INCLUDES

#include <apacmdln.h>

#include <apgtask.h>

#include <apgcli.h>

#include <apgwgnam.h>

#include <eikenv.h>

#include "iaupdatestarter.h"

#include "iaupdatestarterobserver.h"

#include "iaupdateutils.h"

#include "iaupdateuitimer.h"

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

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

// CIAUpdateStarter::NewL

// Two-phased constructor.

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

//

CIAUpdateStarter* CIAUpdateStarter::NewL( const TDesC& aCommandLineExecutable,

                                          const TDesC8& aCommandLineArguments )

    {

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

    CleanupStack::PushL( self );

    self->ConstructL( aCommandLineExecutable, aCommandLineArguments );

    CleanupStack::Pop( self );

    return self;

    }

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

// void CIAUpdateStarter::ConstructL

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

//

void CIAUpdateStarter::ConstructL( const TDesC& aCommandLineExecutable,

                                   const TDesC8& aCommandLineArguments )

    {

    iCommandLineExecutable = aCommandLineExecutable.AllocL();

    iCommandLineArguments = aCommandLineArguments.AllocL();

    }    

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

// CIAUpdateStarter::CIAUpdateStarter

// constructor

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

//

CIAUpdateStarter::CIAUpdateStarter()  

    : CActive( CActive::EPriorityStandard )

    {

    CActiveScheduler::Add( this );

    iEikEnv = CEikonEnv::Static();

    }

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

// CIAUpdateStarter::~CIAUpdateStarter

// Destructor

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

//

CIAUpdateStarter::~CIAUpdateStarter()

    {

    Cancel();

    delete iProcessStartTimer;

    delete iCommandLineExecutable;

    delete iCommandLineArguments;

    iThread.Close();

    iProcess.Close();

    }

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

// CIAUpdateStarter::StartExecutableL

// Starts an executable

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

//

void CIAUpdateStarter::StartExecutableL( MIAUpdateStarterObserver& aStarterObserver ) 

    {

    iStarterObserver = &aStarterObserver;

    //Close all instances of executable first

    if ( !iStartNeeded )

        {

    	iStarterObserver->StartExecutableCompletedL( KErrNone );

    	iStarterObserver = NULL;

        }

    else

        {

        iStartNeeded = EFalse;

        iUid = TUid::Null();

        UidForExecutableL( iUid );

        if ( iUid.iUid == 0 )

            {

            LaunchExeL();

            }

        else

            {

    	    iPrevWgId = 0;  

    	    CApaWindowGroupName::FindByAppUid( iUid, iEikEnv->WsSession(), iPrevWgId );

	        if ( iPrevWgId == KErrNotFound )

	            {

	   	        LaunchExeL();

	            }

	        else

	            {

	            CloseExecutableL();	

	            }

            }

        }

    }

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

// CIAUpdateStarter::CheckInstalledPackageL

// 

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

// 

void CIAUpdateStarter::CheckInstalledPackageL( const TUid& aPUid )

    {

    if ( iCommandLineExecutable->Length() > 0 )

        {

    	if ( !iStartNeeded )

	        {

		    if ( IAUpdateUtils::IsInstalledL( aPUid, *iCommandLineExecutable ) )

		        {

		    	iStartNeeded = ETrue;

		        }

	        }

        }

    }

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

// CIAUpdateStarter::BringToForegroundL

// Bring started application to foreground

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

//    

void CIAUpdateStarter::BringToForegroundL() const

    {

    if ( iExeStarted )	

        {

        TUid uid( TUid::Null() );

        UidForExecutableL( uid );

        if ( uid.iUid != 0 )

            {

        	RWsSession ws;   

            if ( ws.Connect() == KErrNone )

                {

                CleanupClosePushL( ws );        

                TApaTaskList tasklist( ws );   

      	        TApaTask task = tasklist.FindApp( uid );

       	        if ( task.Exists() )

       	            {

       	            task.BringToForeground();

                    }

                CleanupStack::PopAndDestroy( &ws );        

                }   

            }

        }

    }

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

// CIAUpdateStarter::DoCancel

// 

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

// 

void CIAUpdateStarter::DoCancel()

    {

	iProcess.LogonCancel( iStatus );

	if ( iProcessStartTimer )

	    {

	    iProcessStartTimer->Cancel();

	    }

    }

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

// CIAUpdateStarter::RunL

// 

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

//

void CIAUpdateStarter::RunL()

    {

    //Check first if there are still running instances

    CApaWindowGroupName::FindByAppUid( iUid, iEikEnv->WsSession(), iPrevWgId );

	if ( iPrevWgId == KErrNotFound )

	    {

	    LaunchExeL();

	    }

	else

	    {

	    CloseExecutableL();	

	    }

    }

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

// CIAUpdateStarter::RunError

// 

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

//    

TInt CIAUpdateStarter::RunError( TInt aError )

    {

	TRAP_IGNORE( iStarterObserver->StartExecutableCompletedL( aError ) );

    iStarterObserver = NULL;

    return KErrNone;

    }

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

// CIAUpdateStarter::LaunchExeL

// 

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

// 

void CIAUpdateStarter::LaunchExeL()

    {

    // One second delay before launching because sometimes launching does not succeed immediately 

    if ( !iProcessStartTimer )

        {

        iProcessStartTimer = CIAUpdateUITimer::NewL( *this, CIAUpdateUITimer::EProcessStartDelay );

        }

    else

        {

        iProcessStartTimer->Cancel();

        }

    iProcessStartTimer->After( 1000000 );

    }

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

// CIAUpdateStarter::CloseExecutableL

// 

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

// 

void CIAUpdateStarter::CloseExecutableL() 

    {

	CApaWindowGroupName* wgName = CApaWindowGroupName::NewL( iEikEnv->WsSession() );	

	CleanupStack::PushL( wgName );

	wgName->ConstructFromWgIdL( iPrevWgId );

	TBool respondsToShutdownEvent = wgName->RespondsToShutdownEvent();

	CleanupStack::PopAndDestroy( wgName );

	if( respondsToShutdownEvent )

	    {

	    TApaTask task( iEikEnv->WsSession() );

	    task.SetWgId( iPrevWgId );

	    iThread.Close();

	    User::LeaveIfError(iThread.Open(task.ThreadId()));

	    iProcess.Close();

	    User::LeaveIfError(iThread.Process(iProcess));

	    iProcess.Logon( iStatus );

	    task.SendSystemEvent( EApaSystemEventShutdown );

        SetActive(); 	

        }

    else  //Just give up 

	    {

	    iStarterObserver->StartExecutableCompletedL( KErrNone );

        iStarterObserver = NULL;	

	    }

    } 

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

// CIAUpdateStarter::UidForExecutableL

// Find Uid for executable

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

//    

void CIAUpdateStarter::UidForExecutableL( TUid& aUid ) const

    {

    aUid = TUid::Null();

    RApaLsSession lsSession;

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

    CleanupClosePushL( lsSession );

    lsSession.GetAllApps();

    TApaAppInfo appInfo;

    TInt err = KErrNone;

    while ( err == KErrNone )

        {

        err = lsSession.GetNextApp( appInfo );

        TFileName fullName = appInfo.iFullName;	

        TParse parse;

        parse.Set( fullName, NULL, NULL);    

        if ( parse.NameAndExt().CompareF( *iCommandLineExecutable ) == 0 )

            {

            aUid = appInfo.iUid;

          	err = RApaLsSession::ENoMoreAppsInList;

            }

        }

    CleanupStack::PopAndDestroy( &lsSession ); 

    }

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

// CIAUpdateStarter::ProcessStartDelayComplete

// 

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

//

void CIAUpdateStarter::ProcessStartDelayComplete( TInt /*aError*/ )

    {

    delete iProcessStartTimer;

    iProcessStartTimer = NULL;

    TRAPD( err, StartProcessL() );

    TRAP_IGNORE( iStarterObserver->StartExecutableCompletedL( err ) );

    iStarterObserver = NULL;

    }

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

// CIAUpdateStarter::BackgroundDelayComplete

// 

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

//

void CIAUpdateStarter::BackgroundDelayComplete( TInt /*aError*/ )

    {

    }

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

// CIAUpdateStarter::ForegroundDelayComplete

// 

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

//

void CIAUpdateStarter::ForegroundDelayComplete( TInt /*aError*/ )

    {

    }

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

// CIAUpdateStarter::StartProcessL

// 

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

//

void CIAUpdateStarter::StartProcessL()

    {

    RProcess process;

    TInt err = process.Create( *iCommandLineExecutable, KNullDesC );

    if ( err != KErrNone )

        {

        return; // process is already running or some error, nothing to do than return 

        }

    else

        {

        CleanupClosePushL( process );

        CApaCommandLine* commandLine = CApaCommandLine::NewLC();

        commandLine->SetDocumentNameL( KNullDesC );

        commandLine->SetExecutableNameL( *iCommandLineExecutable );

        commandLine->SetCommandL( EApaCommandBackground );

        if ( iCommandLineArguments->Length() > 0 )

            {

            commandLine->SetTailEndL( *iCommandLineArguments );

            }

        commandLine->SetProcessEnvironmentL( process );

        CleanupStack::PopAndDestroy( commandLine );

        process.Resume();

        CleanupStack::PopAndDestroy( &process );

        iExeStarted = ETrue;

        }

    }

// End of File