/*

* Copyright (c) 2002 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:  BT device and service searcher

*

*/

// INCLUDE FILES

#include    <btnotif.h>

#include    "Btobexsearcher.h"

#include	"NSmlObexServiceSearcher.h"

#include	"ExtBTSearcherObserver.h"

// CONSTANTS

_LIT( KBTTransportName,"RFCOMM" );

// LOCAL CONSTANTS AND MACROS

_LIT( KBTObexSearcher, "BT Obex searcher" );

const TInt KInvalidStatePanicVal = -1;

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

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

// CBTObexSearcher::CBTObexSearcher

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CBTObexSearcher::CBTObexSearcher()

    {

    }

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

// CBTObexSearcher::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CBTObexSearcher::ConstructL( const TBTConnInfo& aBTConnInfo )

    {

	BaseConstructL();

    iServiceSearcher = CNSmlObexServiceSearcher::NewL( aBTConnInfo );

    iSettings = CBTEngSettings::NewL( this );

    }

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

// CBTObexSearcher::NewL

// Two-phased constructor.

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

//

CBTObexSearcher* CBTObexSearcher::NewL( const TBTConnInfo& aBTConnInfo )

    {

    CBTObexSearcher* self = new( ELeave ) CBTObexSearcher;

    CleanupStack::PushL( self );

    self->ConstructL( aBTConnInfo );

    CleanupStack::Pop();

    return self;

    }

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

// ~CBTObexSearcher()

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

//

CBTObexSearcher::~CBTObexSearcher()

    {

	Cancel();

    delete iServiceSearcher;

    delete iSettings;   

    if ( iNotifier.Handle() )

        {

        iNotifier.Close();

        }

    }

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

// CBTObexSearcher::RunL()

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

//

void CBTObexSearcher::RunL()

	{

	TInt err( iStatus.Int() );

	if ( err != KErrNone )

		{

		switch ( iState )

			{

            case EIdle:

                {

                if( iWaitingForBTPower )

                    {

                    NotifyDeviceErrorL( err );

                    }

                break;

                }

			case EDeviceSearch:

				{

				NotifyDeviceErrorL( err );

				//Notify external observer

				if ( iExtObserver )

					{

					iExtObserver->BTDeviceErrorL( err );

					}

				break;

				}

			case EServiceSearch:

				{

				NotifyServiceErrorL( err );

				break;

				}

			default:

				{

				User::Panic( KBTObexSearcher, KInvalidStatePanicVal );

				break;

				}

			}

		}

	else

		{

		switch ( iState )

			{

            case EIdle:

                {

                if( iWaitingForBTPower && iOffline() != EFalse )

                    {

                    if ( iNotifier.Handle() )

				        {

				        iNotifier.Close();

				        }

                    TInt err = iSettings->ChangePowerStateTemporarily( );

                    if( err )

                        {

                        NotifyDeviceErrorL( err );

                        }

                    }

                else

                    {

                    NotifyDeviceErrorL( KErrCancel );

                    }

                break;

                }

			case EDeviceSearch:

				{

				NotifyDeviceFoundL();

				//Notify external observer

				if ( iExtObserver )

					{

					iExtObserver->BTDeviceFoundL( iServiceSearcher->ResponseParams() );

					}

				break;

				}

			case EServiceSearch:

				{

				NotifyServiceFoundL();

				break;

				}

			default:

				{

				User::Panic( KBTObexSearcher, KInvalidStatePanicVal );

				break;

				}

			}

		}

	}

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

// CBTObexSearcher::DoCancel()

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

//

void CBTObexSearcher::DoCancel()

	{	

	delete iServiceSearcher;

	iServiceSearcher = 0;

	}

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

// CBTObexSearcher::SearchDeviceL()

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

//

void CBTObexSearcher::SearchDeviceL()

	{

    iWaitingForBTPower = ETrue;

    TBTPowerStateValue power = EBTPowerOff;

    User::LeaveIfError( iSettings->GetPowerState( power ) );

    TBool offline = EFalse;

    if( power == EBTPowerOff )

        {

        offline = CheckOfflineModeL();

        }

    if( !offline )

        {

    	// Even if BT is already on, we still register as "temp BT user".

        User::LeaveIfError( iSettings->ChangePowerStateTemporarily(  ) );

        }

        if( power == EBTPowerOn )

        {

        // start to search immediately.

        PowerStateChanged( power );

        }

   	}

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

// CBTObexSearcher::SearchServiceL()

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

//

void CBTObexSearcher::SearchServiceL()

	{

	SetActive();

	iState = EServiceSearch;

	iStatus = KRequestPending;

	iServiceSearcher->FindServiceL( iStatus );

	}

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

// CBTObexSearcher::CreateObexClientL()

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

//

CObexClient* CBTObexSearcher::CreateObexClientL()

	{

	TObexBluetoothProtocolInfo protocolInfo;

	protocolInfo.iTransport.Copy( KBTTransportName );

	protocolInfo.iAddr.SetBTAddr( iServiceSearcher->BTDevAddr() );

	protocolInfo.iAddr.SetPort( iServiceSearcher->Port() );

	CObexClient* obexClient = CObexClient::NewL( protocolInfo );

	return obexClient;

	}

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

// CBTObexSearcher::PowerStateChanged

// Bluetooth power state has changed; start searching devices if it is on.

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

//

void CBTObexSearcher::PowerStateChanged( TBTPowerStateValue aState )

    {

    if( iWaitingForBTPower && aState == EBTPowerOn )

        {

        iWaitingForBTPower = EFalse;

        TRAPD( err, iServiceSearcher->SelectDeviceByDiscoveryL( iStatus ) );

        if( !err )

            {

            iState = EDeviceSearch;

            SetActive();

            }

        else

            {

            TRAP_IGNORE(NotifyDeviceErrorL( err ));

            }

        }

    }

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

// CBTObexSearcher::VisibilityModeChanged

// Notification of changes in the discoverability mode, ignored.

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

//

void CBTObexSearcher::VisibilityModeChanged( TBTVisibilityMode /*aState*/ )

    {

    }

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

// CBTObexSearcher::CheckOfflineModeL

// Checks the offline mode and queries the user for turning BT on if required.

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

//

TBool CBTObexSearcher::CheckOfflineModeL()

    {

    TCoreAppUIsNetworkConnectionAllowed offline = ECoreAppUIsNetworkConnectionNotAllowed;

    TBTEnabledInOfflineMode offlineAllowed = EBTDisabledInOfflineMode;

    User::LeaveIfError( iSettings->GetOfflineModeSettings( offline, offlineAllowed ) );

    if( offline == ECoreAppUIsNetworkConnectionNotAllowed && 

         offlineAllowed == EBTEnabledInOfflineMode )

        {

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

        TBTGenericQueryNotiferParamsPckg pckg;

        pckg().iMessageType = EBTActivateOffLineQuery;

        pckg().iNameExists = EFalse;

        iNotifier.StartNotifierAndGetResponse( iStatus, KBTGenericQueryNotifierUid, 

                                                pckg, iOffline );

        SetActive();

        }

    else if( offline == ECoreAppUIsNetworkConnectionNotAllowed && 

            offlineAllowed == EBTDisabledInOfflineMode )

           {

           NotifyDeviceErrorL( KErrNotSupported );

           }

    return ( offline == ECoreAppUIsNetworkConnectionNotAllowed );

    }

//  End of File