/*

* 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:  AT command URC handler

*

*/

#ifndef C_CHFPATURCHANDLER_H

#define C_CHFPATURCHANDLER_H

#include <atext.h>

#include "HFPAtEcomListen.h"

/**

 *  Class for AT command URC handler

 *

 *  @lib HFPatext.lib

 *  @since S60 v5.0

 */

class MATExtObserver;

NONSHARABLE_CLASS( CHFPAtUrcHandler ) : public CActive

    {

public:

    /**

     * Two-phased constructor.

     * @param aAtCmdExt Pointer to AT command extension

     * @param aStreamCallback Callback to stream

     * @return Instance of self

     */

	static CHFPAtUrcHandler* NewL( RATExt* aAtCmdExt,

	                               MATExtObserver& aObserver );

    /**

     * Two-phased constructor.

     * @param aAtCmdExt Pointer to AT command extension

     * @param aStreamCallback Callback to stream

     * @return Instance of self

     */

	static CHFPAtUrcHandler* NewLC( RATExt* aAtCmdExt,

	                                MATExtObserver& aObserver );

    /**

    * Destructor.

    */

    virtual ~CHFPAtUrcHandler();

    /**

     * Resets data to initial values

     *

     * @since S60 5.0

     * @return None

     */

    void ResetData();

    /**

     * Starts waiting for an incoming URC message

     *

     * @since S60 5.0

     * @return Symbian error code on error, KErrNone otherwise

     */

    TInt IssueRequest();

    /**

     * Stops waiting for an incoming URC message

     *

     * @since S60 5.0

     * @return Symbian error code on error, KErrNone otherwise

     */

    TInt Stop();

    /**

     * UID of the owning plugin

     *

     * @since S60 5.0

     * @return UID of the owning plugin

     */

    TUid OwnerUid();

private:

    CHFPAtUrcHandler( RATExt* aAtCmdExt,

                      MATExtObserver& aObserver );

    void ConstructL();

    /**

     * Initializes this class

     *

     * @since S60 3.2

     * @return None

     */

    void Initialize();

// from base class CActive

    /**

     * From CActive.

     * Gets called when URC command received

     *

     * @since S60 3.2

     * @return None

     */

    void RunL();

    /**

     * From CActive.

     * Gets called on cancel

     *

     * @since S60 3.2

     * @return None

     */

    void DoCancel();

private:  // data

    /**

     * AT command extension

     * Not own.

     */

    RATExt* iAtCmdExt;

    MATExtObserver& iObserver;

    /**

     * Current state of URC message handling: active or inactive

     */

    THFPState iUrcHandleState;

    /**

     * Buffer for receiving

     */

    TBuf8<KDefaultUrcBufLength> iRecvBuffer;

    /**

     * UID of the responsible ATEXT plugin

     */

    TUid iOwnerUid;

    /**

     * Package for owner UID

     */

    TPckg<TUid> iOwnerUidPckg;

    /**

     * Flag to indicate start of receiving (for ownership marking)

     */

    TBool iStarted;

    };

#endif  // C_CHFPATURCHANDLER_H