1 /*

     2 * Copyright (c) 2005-2009 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 *

    16 */

    17 

    18 

    19 

    20 

    21 /**

    22  @file

    23  @internalTechnology 

    24 */

    25 

    26 #ifndef HWRMVIBRASTATUSOBSERVER_H

    27 #define HWRMVIBRASTATUSOBSERVER_H

    28 

    29 // INCLUDES

    30 #include <e32base.h>

    31 #include <hwrmvibra.h>

    32 #include <e32property.h>

    33 

    34 // FORWARD DECLARATIONS

    35 // None

    36 

    37 /**

    38 * Active object wrapper for Publish and Subscribe one-shot notification handling.

    39 * Listens for changes in light status and notifies the client.

    40 *

    41 */

    42 NONSHARABLE_CLASS(CHWRMVibraStatusObserver) : public CActive

    43     {

    44     public:

    45 

    46         /**

    47         * This is a two-phase constructor method that is used to

    48         * create a new instance of CHWRMVibraStatusObserver.

    49         * A newly created instance immediately starts listening to vibra status changes.

    50         *

    51         * @param aCallback Pointer to a callback instance. Can be NULL.

    52         * @return          A pointer to a new instance of the CHWRMVibraStatusObserver class.

    53         */

    54         static CHWRMVibraStatusObserver* NewL(MHWRMVibraObserver* aCallback);

    55 

    56         /**

    57         * Destructor.

    58         */

    59         virtual ~CHWRMVibraStatusObserver();

    60 

    61         /**

    62         * This method retrieves the current vibra status. 

    63         *

    64         * @return TVibraStatus indicating the current vibra status

    65         */

    66         CHWRMVibra::TVibraStatus CurrentStatus() const;

    67 

    68     protected:

    69 

    70         // From CActive

    71         void RunL();

    72         void DoCancel();

    73 

    74     private:

    75 

    76         /**

    77         * Constructor

    78         *

    79         * @param aCallback Pointer to a callback instance.

    80         */

    81         CHWRMVibraStatusObserver(MHWRMVibraObserver* aCallback);

    82                                                    

    83         /**

    84         * By default Symbian 2nd phase constructor is private.

    85         */

    86         void ConstructL();

    87 

    88         /*

    89         * Order notification

    90         */

    91         void OrderNotification();

    92        

    93     private:

    94         

    95         MHWRMVibraObserver* iCallback;         // not owned by this class. Can be NULL.

    96         RProperty iProperty;                   // P&S property

    97         CHWRMVibra::TVibraStatus iVibraStatus; // stores status

    98     };

    99 

   100 #endif      // HWRMVIBRASTATUSOBSERVER_H

   101 

   102 // End of File