/*

* 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: 

*

*/

#ifndef BTNOTIFBASEPAIRINGHANDLER_H

#define BTNOTIFBASEPAIRINGHANDLER_H

#include <e32base.h>

#include <bttypes.h>

#include <btnotif.h>

#include <btengconstants.h>

#include <btservices/btsimpleactive.h>

/**

 *  Class CBTNotifBasePairingHandler

 *

 *  The base class for pairing handling. 

 *  When the pairing has completed (successfully or unsuccessfully), the user

 *  is informed of the result

 *

 *  @since Symbian^4

 */

NONSHARABLE_CLASS( CBTNotifBasePairingHandler ) : 

    public CBase, public MBtSimpleActiveObserver

    {

public:

    /**

     * Destructor

     */

    virtual ~CBTNotifBasePairingHandler();

    /**

     * Handle a pairing result from the pairing server.

     *

     * @param aAddr the address of the remote device which the result is for.

     * @param aResult The status code of the pairing or authentication result.

     */

    void HandlePairServerResult( const TBTDevAddr& aAddr, TInt aResult );

    /**

     * Handles event of new paired device event in registry.

     * @param aDev the remote device which the pair is with.

     */

    void HandleRegistryNewPairedEvent( const TBTNamelessDevice& aDev );

    /**

     * Start observing the result of the pairing originated by

     * the remote device.

     * Must be specialized by subclass.

     * @param the address of the remote device to be paired

     * @return KErrNone if this request is accepted; otherwise an error code

     */

    virtual TInt ObserveIncomingPair( const TBTDevAddr& aAddr ) = 0;

    /**

     * Start an outgoing pairing with the remote device.

     * Must be specialized by subclass.

     * @param the address of the remote device to be paired

     * @return KErrNone if this request is accepted; otherwise an error code

     */

    virtual void HandleOutgoingPairL( const TBTDevAddr& aAddr, TUint aCod ) = 0;

    /**

     * Cancel the outstanding pairing operation.

     */

    virtual void CancelOutgoingPair();

    /**

     * Cancels pairing handling with the specified device

     * @param aAddr the address of the device the pairing is with

     */

    virtual void StopPairHandling( const TBTDevAddr& aAddr ) = 0;

    /**

     * Gets the pin code to be used for pairing a device.

     * @param aPin contains the pin code if it is not empty

     * @param aAddr the device to which pairing is performed.

     * @param the required minimum length of a pin code.

     */

    virtual void GetPinCode( TBTPinCode& aPin, const TBTDevAddr& aAddr, TInt aMinPinLength );

protected:

    /**

     * Handle a pairing result with the remote device which this is for.

     * Must be specialized by subclass.

     *

     * @param aResult The status code of the pairing or authentication result.

     */

    virtual void DoHandlePairServerResult( TInt aResult ) = 0;

    /**

     * Handles a registry new paired event with the remote 

     * device with which this handler is dealing.

     * Must be specialized by subclass.

     * @aType the type of authentication with the device.

     */

    virtual void DoHandleRegistryNewPairedEvent( const TBTNamelessDevice& aDev ) = 0;

protected:

    /**

     * C++ default constructor

     */

    /**

     * Symbian 2nd-phase constructor

     */

    void BaseConstructL();

    /**

     * Invalidate the pair result flag of this 

     */

    void UnSetPairResult();

    /**

     * Sets the pair result and validate pair result flag

     */

    void SetPairResult( TInt aResult );

    /**

     * Tells if the pair result has been set.

     * @ETrue if the result has been set.

     */

    TBool IsPairResultSet();

protected:

    /**

     * Address of the remote device we are trying to pair.

     */

    TBTDevAddr iAddr;

    /**

     * Contains the final result of pairing with the remote device

     */

    TInt iPairResult;

    /**

     * Pair result flag, ETrue if iPairResult is been set.

     */

    TBool iPairResultSet;

    /**

     * Reference to the owner of this object.

     */

    /**

     * Active object helper for asynchronous operations.

     * Own.

     */

    CBtSimpleActive* iActive;

    };

#endif /*BTNOTIFBASEPAIRINGHANDLER_H*/