/*

* Copyright (c) 2008 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:  Modem's mode listener and notifier

*

*/

#ifndef C_CDUNATMODELISTEN_H

#define C_CDUNATMODELISTEN_H

#include <e32base.h>

#include <atextcommon.h>

#include "DunTransporter.h"

/**

 *  Notification interface class for modem's mode listener

 *

 *  @lib dunatext.lib

 */

NONSHARABLE_CLASS( MDunAtModeListen )

    {

public:

    /**

     * Notifies about mode status change

     *

     * @param aMode Current modem modes

     * @return Symbian error code on error, KErrNone otherwise

     */

    virtual TInt NotifyModeStatusChange( TUint aMode ) = 0;

    };

/**

 *  Class for modem's mode listener and notifier

 *

 *  @lib dunatext.lib

 */

NONSHARABLE_CLASS( CDunAtModeListen ) : public CActive

    {

public:

    /**

     * Two-phased constructor.

     * aAtCmdExtCommand AT command extension to common functionality

     * aCallback Callback to mode status change

     * @return Instance of self

     */

	static CDunAtModeListen* NewL( RATExtCommon* aAtCmdExtCommon,

	                               MDunAtModeListen* aCallback );

    /**

     * Two-phased constructor.

     * aAtCmdExtCommand AT command extension to common functionality

     * aCallback Callback to mode status change

     * @return Instance of self

     */

    static CDunAtModeListen* NewLC( RATExtCommon* aAtCmdExtCommon,

                                    MDunAtModeListen* aCallback );

    /**

    * Destructor.

    */

    virtual ~CDunAtModeListen();

    /**

     * Resets data to initial values

     *

     * @return None

     */

    void ResetData();

    /**

     * Issues request to start monitoring for mode status changes

     *

     * @return Symbian error code on error, KErrNone otherwise

     */

    TInt IssueRequest();

    /**

     * Stops monitoring for mode status changes

     *

     * @return Symbian error code on error, KErrNone otherwise

     */

    TInt Stop();

private:

    CDunAtModeListen( RATExtCommon* iAtCmdExtCommon,

                      MDunAtModeListen* aCallback );

    void ConstructL();

    /**

     * Initializes this class

     *

     * @return None

     */

    void Initialize();

// from base class CActive

    /**

     * From CActive.

     * Gets called when mode changes

     *

     * @return None

     */

    void RunL();

    /**

     * From CActive.

     * Gets called on cancel

     *

     * @return None

     */

    void DoCancel();

private:  // data

    /**

     * AT command extension to common functionality

     * Not own.

     */

    RATExtCommon* iAtCmdExtCommon;

    /**

     * Callback to call when mode status changes

     * Not own.

     */

    MDunAtModeListen* iCallback;

    /**

     * Current state of mode listening: active or inactive

     */

    TDunState iModeListenState;

    /**

     * Stored mode status change

     */

    TUint iMode;

    /**

     * Package for mode status changes

     */

    TPckg<TUint> iModePckg;

    };

#endif  // C_CDUNATMODELISTEN_H