/*

* Copyright (c) 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:  an extended BT device offering properties of

* a Bluetooth device that may be needed by Bluetooth UIs

*

*/

#include <btservices/btdevextension.h>

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

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

// C++ default constructor

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

//

CBtDevExtension::CBtDevExtension( TDefaultDevNameOption aNameOption ) 

: iNameOption( aNameOption )

    {

    }

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

// Symbian 2nd-phase constructor

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

//

void CBtDevExtension::ConstructL(  CBTDevice* aDev )

    {

    SetDeviceL( aDev );

    }

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

// NewLC

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

//

EXPORT_C CBtDevExtension* CBtDevExtension::NewLC( 

        CBTDevice* aDev, TDefaultDevNameOption aNameOption )

    {

    CBtDevExtension* self = NULL;

    self = new (ELeave) CBtDevExtension( aNameOption );

    CleanupStack::PushL( self );

    self->ConstructL( aDev );

    return self;

    }

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

// NewL

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

//

EXPORT_C CBtDevExtension* CBtDevExtension::NewLC( 

        const TInquirySockAddr& aAddr,

        const TDesC& aName,

        TDefaultDevNameOption aNameOption )

    {

    CBtDevExtension* self = new (ELeave) CBtDevExtension( aNameOption );

    CleanupStack::PushL( self );

    CBTDevice* dev = CBTDevice::NewLC( aAddr.BTAddr() );

    TBTDeviceClass cod( aAddr.MajorServiceClass(), 

            aAddr.MajorClassOfDevice(), aAddr.MinorClassOfDevice() );

    dev->SetDeviceClass( cod );

    if ( aName.Length() )

        {

        dev->SetDeviceNameL(  BTDeviceNameConverter::ToUTF8L( aName ) );

        }

    self->ConstructL( dev );

    CleanupStack::Pop( dev );

    return self;

    }

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

// Destructor

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

//

EXPORT_C CBtDevExtension::~CBtDevExtension()

    {

    iAlias.Close();

    delete iDev;

    }

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

// IsBonded

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

//

TBool CBtDevExtension::IsBonded( const TBTNamelessDevice &dev )

    {

    // IsValidPaired tells if the paired bit of dev is valid

    // and IsPaired tells if the device is paired or not:

    return dev.IsValidPaired() && 

           dev.IsPaired() && 

           // Authentication due to OBEX cases e.g. file transfer, is not 

           // considered as bonded in Bluetooth UI:

           dev.LinkKeyType() != ELinkKeyUnauthenticatedUpgradable;

    }

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

// IsJustWorksBonded

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

//

TBool CBtDevExtension::IsJustWorksBonded( const TBTNamelessDevice &dev )

    {

    return IsBonded( dev ) && 

         dev.LinkKeyType() == ELinkKeyUnauthenticatedNonUpgradable;

    }

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

// IsUserAwareBonded

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

//

TBool CBtDevExtension::IsUserAwareBonded( const TBTNamelessDevice &dev )

    {

    if ( IsJustWorksBonded( dev ) )

        {

        // Just Works bonded devices can happen without user awareness.

        // For example, authentication due to an incoming service connection request 

        // from a device without IO.

        // We use cookies to identify if this JW pairing is user aware or not:

        TInt32 cookie = dev.IsValidUiCookie() ? dev.UiCookie() : EBTUiCookieUndefined;

        return (cookie & EBTUiCookieJustWorksPaired );        

        }

    // Pairing in other mode than Just Works are always user-aware:

    return IsBonded( dev );

    }

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

// 

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

//

EXPORT_C const TDesC& CBtDevExtension::Alias() const

    {

    return iAlias;

    }

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

// Addr()

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

//

EXPORT_C const TBTDevAddr& CBtDevExtension::Addr() const

    {

    return iDev->BDAddr();

    }

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

// Device

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

//

EXPORT_C const CBTDevice& CBtDevExtension::Device() const

    {

    return *iDev;

    }

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

// IsUserAwareBonded

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

//

EXPORT_C TBool CBtDevExtension::IsUserAwareBonded() const

    {

    return IsUserAwareBonded( iDev->AsNamelessDevice() );

    }

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

// ServiceConnectionStatus()

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

//

TBTEngConnectionStatus CBtDevExtension::ServiceConnectionStatus() const

    {

    return iServiceStatus;

    }

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

// SetDeviceL

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

//

EXPORT_C void CBtDevExtension::SetDeviceL( CBTDevice* aDev )

    {

    delete iDev;

    iDev = aDev;

    // It is possible that the client set a NULL object to us.

    if ( !iDev )

        {

        iDev = CBTDevice::NewL();

        }

    // No optimization here. If client sets an identical device instance

    // We will still execute these steps:

    UpdateNameL();

    //UpdateServiceStatusL();

    }

EXPORT_C CBtDevExtension* CBtDevExtension::CopyL()

    {

    CBtDevExtension* newDev = CBtDevExtension::NewLC( NULL );

    CBTDevice* dev = iDev->CopyL();

    CleanupStack::PushL( dev );

    newDev->SetDeviceL( dev );

    CleanupStack::Pop( dev);

    newDev->SetServiceConnectionStatus( ServiceConnectionStatus() );

    CleanupStack::Pop( newDev );

    return newDev;

    }

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

// ServiceConnectionStatus()

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

//

void CBtDevExtension::SetServiceConnectionStatus(

        TBTEngConnectionStatus aStatus )

    {

    iServiceStatus = aStatus;

    }

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

// UpdateL()

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

//

void CBtDevExtension::UpdateNameL()

    {

    // UI takes friendly name for displaying if it is available

    iAlias.Zero();

    if ( iDev->IsValidFriendlyName() && iDev->FriendlyName().Length() != 0 )

        {

        iAlias.CreateL( iDev->FriendlyName() );

        }

    // otherwise, device name, if it is available, will be displayed

    else if ( iDev->IsValidDeviceName() && iDev->DeviceName().Length() != 0 )

        {

        iAlias.CreateL( BTDeviceNameConverter::ToUnicodeL(iDev->DeviceName() ) );

        }

    if ( iAlias.Length() == 0 && 

        ( iNameOption == EColonSeperatedBDAddr || iNameOption == EPlainBDAddr ) )

        {

        // Name for display is still missing. We need to make one for user to 

        // identify it.

        FormatAddressAsNameL();

        }

    }

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

// FormatAddressAsNameL()

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

//

void CBtDevExtension::FormatAddressAsNameL()

    {

    // readable format of BD_ADDR is double size of BD ADDR size,

    // and plus the seperators.

    iAlias.ReAllocL( KBTDevAddrSize * 3 );

    _LIT(KColon, ":");

    if ( iNameOption == EColonSeperatedBDAddr )

        {

        iDev->BDAddr().GetReadable( iAlias, KNullDesC, KColon, KNullDesC );         

        }

    else

        {

        iDev->BDAddr().GetReadable( iAlias );

        }

    }