1 /*

     2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *     CHeadsetStatusObserver functionality.

    16 *

    17 */

    18 

    19 

    20 #ifndef __HEADSETOBSERVER_H__

    21 #define __HEADSETOBSERVER_H__

    22 

    23 #ifdef __ACCESSORY_FW

    24 

    25 // INCLUDES

    26 #include <e32base.h>

    27 #include <AccPolAccessoryMode.h>

    28 

    29 // FORWARD DECLARATIONS

    30 class MHeadsetStatusObserver;

    31 class RAccessoryMode;

    32 

    33 // CLASS DECLARATION

    34 

    35 /**

    36 *   Active object for receiving asynchronous requests

    37 *   from accessory mode change events.

    38 *   Only enabled with __ACCESSORY_FW flag set.

    39 */

    40 NONSHARABLE_CLASS( CHeadsetStatusObserver ): public CActive

    41     {

    42     public:     // Constructors & destructors

    43        

    44         /**

    45         * Destructor 

    46         */

    47         ~CHeadsetStatusObserver();

    48 

    49         /**

    50         * Symbian two phased constructor.

    51         */

    52         static CHeadsetStatusObserver* NewL( RAccessoryMode& aAccMode );

    53 

    54     public:     // New methods

    55     

    56         /**

    57         * Sets observer through headset status notifications are received.

    58         * @param    aObserver: Observer

    59         * @return   None

    60         */

    61         void SetObserver( MHeadsetStatusObserver* aObserver );

    62         

    63         /**

    64         * Activates observing through RAccessoryMode.

    65         * Method will panic if already active.

    66         * @param    None

    67         * @return   None

    68         */

    69         void StartObserving();

    70         

    71     private:  // From base classes

    72     

    73         // From CActive

    74         void RunL();

    75         

    76         // From CActive

    77         void DoCancel();

    78     

    79         // From CActive

    80         TInt RunError( TInt aError );

    81         

    82     private:    // New methods

    83     

    84         // Notifies observer from headset status change

    85         void NotifyObserverL();

    86         

    87         // Notifies observer from error

    88         void NotifyObserverError( TInt aError );

    89                 

    90     private: 

    91         

    92         /**

    93         * Default Constructor 

    94         */

    95         CHeadsetStatusObserver( RAccessoryMode& aAccMode );

    96         

    97         /**

    98         * Symbian OS 2nd phase constructor 

    99         */

   100         void ConstructL();  

   101                

   102     private:

   103     

   104         // headset status observer, not owned

   105         MHeadsetStatusObserver* iObserver;

   106         

   107         // reference to RAccessoryMode, not owned

   108         RAccessoryMode& iAccMode;

   109         

   110         // accessory mode

   111         TAccPolAccessoryMode iAccPolMode;

   112     };

   113     

   114 #endif //__ACCESSORY_FW

   115 

   116 #endif //__HEADSETCONTAINER_H__

   117 

   118 // End of File