/*

* Copyright (c) 2006 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 for USB events

*

*/

#include <e32base.h>

#include <f32file.h>

#include <e32property.h>

#include <driveinfo.h>

#include <mpxpskeywatcher.h>

#include <coreapplicationuisdomainpskeys.h>

#include <UsbWatcherInternalPSKeys.h>

#include <usbpersonalityids.h>

#include <mtpprivatepskeys.h>

#include <mpxlog.h>

#include "mpxusbeventhandler.h"

// CONSTANTS

const TUint KUsbAllStates = 0xFFFFFFFF;

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

// Default Constructor

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

//

CMPXUsbEventHandler::CMPXUsbEventHandler( MMPXSystemEventObserver& aObserver ) :

                                          CActive( EPriorityStandard ),

                                          iWasMtp  ( EFalse ),

                                          iObserver( aObserver ),

                                          iUsbManConnected( EFalse )

    {

    CActiveScheduler::Add( this );

    }

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

// 2nd Phase Constructor

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

//

void CMPXUsbEventHandler::ConstructL()

    {

    MPX_DEBUG1(_L("CMPXUsbEventHandler::ConstructL <---"));

    iPSKeyWatcher = CMPXPSKeyWatcher::NewL( KPSUidUsbWatcher,

                                            KUsbWatcherSelectedPersonality,

                                            this );

    //for checking MTP status key whether a client has started

    iMTPKeyWatcher = CMPXPSKeyWatcher::NewL( KMtpPSUid, 

                                             KMtpPSStatus,

                                             this );

    // Connect to usbman

    ConnectUsbMan();

    MPX_DEBUG1(_L("CMPXUsbEventHandler::ConstructL --->"));

    }

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

// Two Phased Constructor

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

//

CMPXUsbEventHandler* CMPXUsbEventHandler::NewL

                                        ( MMPXSystemEventObserver& aObserver )

    {

    CMPXUsbEventHandler* self = CMPXUsbEventHandler::NewLC( aObserver );

    CleanupStack::Pop( self );

    return self;

    }

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

// Two Phased Constructor

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

//

CMPXUsbEventHandler* CMPXUsbEventHandler::NewLC

                                        ( MMPXSystemEventObserver& aObserver )

    {

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

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// Destructor

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

//

CMPXUsbEventHandler::~CMPXUsbEventHandler()

    {

    Cancel();

    if ( iUsbManConnected )

        {

        iUsbMan.Close();

        }

    delete iPSKeyWatcher;

    delete iMTPKeyWatcher;

    }

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

// Poll for any ongoing USB / MTP event

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

//

void CMPXUsbEventHandler::PollStatus()

    {

    TInt value;

    iPSKeyWatcher->GetValue( value );

    if( (value==KUsbPersonalityIdMS) ||

        (value==KUsbPersonalityIdMTP) ||

        (value==KUsbPersonalityIdPCSuiteMTP) )

        {

        HandlePSEvent( TUid::Uid(0), 0 );

        }

    }

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

// Handle the PS key event

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

//

void CMPXUsbEventHandler::HandlePSEvent( TUid aUid, TInt aKey )

    {

    TRAP_IGNORE( DoHandlePSEventL(aUid,aKey) );

    }

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

// Handle the PS key event

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

//

void CMPXUsbEventHandler::DoHandlePSEventL( TUid /*aUid*/, TInt /*aKey*/ )

    {

    MPX_FUNC("CMPXUsbEventHandler::DoHandlePSEvent()");

    if ( !iUsbManConnected )

        {

        ConnectUsbMan();

        }

    // Use the default MMC drive

    TInt removableDrive( EDriveE );

    User::LeaveIfError( DriveInfo::GetDefaultDrive(

        DriveInfo::EDefaultRemovableMassStorage,

        removableDrive ) );

    // Handle the Key event

    TInt value;

    iPSKeyWatcher->GetValue( value );

    // Determine if we are currently in MTP / Mass Storage mode

    //

    MPX_DEBUG2("CMPXUsbEventHandler::DoHandlePSEvent -- get usb value %i", value);

	MPX_DEBUG2("CMPXUsbEventHandler::DoHandlePSEvent -iState=%d", iState);

    if( (value == KUsbPersonalityIdMS) && 

        ( iDeviceState == EUsbDeviceStateAddress ||

          iDeviceState == EUsbDeviceStateConfigured ) )

        {

        // Switch mode

        if( iState == KUsbPersonalityIdMTP )

            {

            MPX_DEBUG1("CMPXUsbEventHandler::DoHandlePSEvent - MTP End");

            iObserver.HandleSystemEventL( EUSBMTPEndEvent, removableDrive );

            }

        MPX_DEBUG1("CMPXUsbEventHandler::DoHandlePSEvent - USB Start");

        removableDrive = -1;

        // Notify the state change (may happen more than once)

        iObserver.HandleSystemEventL( EUSBMassStorageStartEvent, removableDrive );

        iState = KUsbPersonalityIdMS;

        }

    else if( ( value == KUsbPersonalityIdMTP || value == KUsbPersonalityIdPCSuiteMTP ) &&

             ( iDeviceState == EUsbDeviceStateAddress || iDeviceState == EUsbDeviceStateConfigured ) )

        {

        if( iState == KUsbPersonalityIdMS )

            {

            MPX_DEBUG1("CMPXUsbEventHandler::DoHandlePSEvent - USB End");

            iObserver.HandleSystemEventL( EUSBMassStorageEndEvent, removableDrive );

            }

        iMTPKeyWatcher->GetValue(value);

        MPX_DEBUG2("CMPXUsbEventHandler::DoHandlePSEvent -- get MTP value %i", value);

        if (value == EMtpPSStatusActive)

            {

            }

        else if( value != EMtpPSStatusReadyToSync )

            {

            MPX_DEBUG1("CMPXUsbEventHandler::DoHandlePSEvent - MTP Not Active");

            iObserver.HandleSystemEventL( EUSBMTPNotActiveEvent, removableDrive );

            iState = KUsbPersonalityIdMTP;

            }

        }

    // Make sure MTP and MS flags are OFF

    //

    else if( value != KUsbPersonalityIdMTP &&

             value != KUsbPersonalityIdMS &&

             value != KUsbPersonalityIdPCSuiteMTP )

        {

        // Signal end of event

        if( iState == KUsbPersonalityIdMS )

            {

            MPX_DEBUG1("CMPXUsbEventHandler::DoHandlePSEvent - USB End");

            iObserver.HandleSystemEventL( EUSBMassStorageEndEvent, removableDrive );

            }

        else if( iState == KUsbPersonalityIdMTP )

            {

            MPX_DEBUG1("CMPXUsbEventHandler::DoHandlePSEvent - MTP End");

            iObserver.HandleSystemEventL( EUSBMTPEndEvent, removableDrive );

            }

        iState = KUsbWatcherSelectedPersonalityNone;

        }

    }

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

// CMPXUsbEventHandler::RunL

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

//

void CMPXUsbEventHandler::RunL()

    {

    MPX_FUNC("CMPXUsbEventHandler::RunL()");

    TInt status( iStatus.Int() );

    MPX_DEBUG2("CMPXUsbEventHandler::RunL status=%d", status );

    if ( status != KErrCancel && status != KErrServerTerminated )

        {

        iUsbMan.DeviceStateNotification( KUsbAllStates, iDeviceState, iStatus );

        SetActive();

        }

    if ( status == KErrNone )

        {

        MPX_DEBUG2("CMPXUsbEventHandler::RunL - DeviceState = %d", iDeviceState);

        HandlePSEvent( TUid::Uid(0), 0 );

        }

    }

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

// CMPXUsbEventHandler::DoCancel

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

//

void CMPXUsbEventHandler::DoCancel()

    {

    MPX_FUNC("CMPXUsbEventHandler::DoCancel()");

    if ( iUsbManConnected )

        {

        iUsbMan.DeviceStateNotificationCancel();

        }

    }

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

// CMPXUsbEventHandler::ConnectUsbMan

// If error, default iDeviceState to EUsbDeviceStateConfigured so this would not

// block usb event mode change.

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

void CMPXUsbEventHandler::ConnectUsbMan()

    {

    MPX_FUNC("CMPXUsbEventHandler::ConnectUsbMan()");

    if ( iUsbMan.Connect() == KErrNone )

        {

        iUsbManConnected = ETrue;

        // get device state

        TInt err = iUsbMan.GetDeviceState( iDeviceState );

        if ( err )

            {

            iDeviceState = EUsbDeviceStateUndefined;

            }

        // start active object

        if ( !IsActive() )

            {

            iUsbMan.DeviceStateNotification( KUsbAllStates, iDeviceState, iStatus );

            SetActive();

            }

        }

    else

        {

        iDeviceState = EUsbDeviceStateConfigured;

        }

    }

// END OF FILE