/*

* 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: 

*

*/

// INCLUDE FILES

#include <e32std.h>                      

#include "toolsusbportlistener.h" 

// LOCAL FUNCTION PROTOTYPES

// LOCAL CONSTANTS

const TUint KUsbDeviceStateMask				= 0x00ff;

#define KPersonalityPCSuite               113

#define KPersonalityPCSuiteMTP            5

//

// CToolsUsbPortListener::CToolsUsbPortListener

// Constructor

//

CToolsUsbPortListener::CToolsUsbPortListener (MToolsConnectionListener *aConnectionListener) 

		  	  :CToolsCommPortListener(aConnectionListener, CActive::EPriorityStandard)

{

	iUsbDeviceState = EUsbDeviceStateUndefined;

	iConnected = EFalse;

	iPersonalityId = 0;

    // For platsim, getting the USB device state is not supported.

    // Infact it panics the server, so don't bother with the USB state for platsim.

#ifndef __PLATSIM__    

    TInt err = iUsbServer.Connect();

    err = iUsbServer.GetDeviceState( iUsbDeviceState );

    if (!err)

    	err = iUsbServer.GetCurrentPersonalityId( iPersonalityId );

    if (!err && iUsbDeviceState == EUsbDeviceStateConfigured

    		 && iPersonalityId == KPersonalityPCSuiteMTP)

    		 iConnected = ETrue;

    CActiveScheduler::Add( this ); 

#endif

}

//

// CToolsUsbPortListener::~CToolsUsbPortListener

// Destructor

//

CToolsUsbPortListener::~CToolsUsbPortListener()

{

#ifndef __PLATSIM__

    Cancel();   // Ensure that any outstanding requests are cancelled

    Deque();

    iUsbServer.Close();

#endif    

}

//

// CToolsUsbPortListener::ListenL

// Starts listening for usb connection status notifications..

//

void CToolsUsbPortListener::ListenL()

{		

	IssueRequestL();		

}

//

// CToolsUsbPortListener::IsConnectionAvailable

//

TBool CToolsUsbPortListener::IsConnectionAvailable()

{		

#ifndef __PLATSIM__		

	TInt err = iUsbServer.GetDeviceState( iUsbDeviceState );

    if (!err)

    	err = iUsbServer.GetCurrentPersonalityId( iPersonalityId );

    if (!err && iUsbDeviceState == EUsbDeviceStateConfigured

    		 && iPersonalityId == KPersonalityPCSuiteMTP)

    {

		iConnected = ETrue;     

		return ETrue;

    }

#endif      

    return EFalse;

}

//

// CToolsUsbPortListener::IssueRequestL

//

void CToolsUsbPortListener::IssueRequestL()

{		

#ifndef __PLATSIM__		

	if ( iUsbDeviceState == EUsbDeviceStateUndefined )

	{

		User::LeaveIfError( iUsbServer.GetDeviceState( iUsbDeviceState ) );		

	}

	iUsbServer.DeviceStateNotification(KUsbDeviceStateMask, iUsbDeviceState, iStatus);

	SetActive();	

#endif		

}

//

// CToolsUsbPortListener::StopListening

// Cancel any pending requests for connection status notifications.

//

void CToolsUsbPortListener::StopListening()

{

	Cancel();	

}

//

// CToolsUsbPortListener::DoCancel

// This method gets called from CActive::Cancel();

//

void CToolsUsbPortListener::DoCancel()

{

#ifndef __PLATSIM__		

	iUsbServer.DeviceStateNotificationCancel();	

#endif	

	iUsbDeviceState = EUsbDeviceStateUndefined;

}

//

// CToolsUsbPortListener::RunL

// This method gets called whenever there is a change in the connection status.

// Right now we are interested only when the cable is disconnected. 

// For all the other notifications, just reissues the request.

//

void CToolsUsbPortListener::RunL()

{

#ifndef __PLATSIM__		

	User::LeaveIfError( iStatus.Int() );

	iUsbServer.GetCurrentPersonalityId( iPersonalityId );

    if ( iUsbDeviceState == EUsbDeviceStateUndefined ||

         (iUsbDeviceState == EUsbDeviceStateConfigured && iPersonalityId != KPersonalityPCSuiteMTP) ) 

	{

		iConnectionListener->ConnectionUnAvailable();

		iConnected = EFalse;

	}

	// There is something wrong with USB cable status notifications

	// When the cable is disconnected, first you get a notification 

	// with the device state as configured.

	// So we need to work around using a local status flag

	else if ( iUsbDeviceState == EUsbDeviceStateConfigured &&

			  iPersonalityId == KPersonalityPCSuiteMTP  && 

			  !iConnected) 

	{

		iConnected = ETrue;

		iConnectionListener->ConnectionAvailable();;

	}

	IssueRequestL();	

#endif		

}

TConnectionStatus CToolsUsbPortListener::GetUsbConnStatus()

{   

    if(iConnected)

        return EUsbConnected;

    return EUsbNotConnected;

}