1 /*

     2 * Copyright (c) 2010 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:  Header file for property observer

    15 *

    16 */

    17 #ifndef CAUTOAUDIOASYPROPERTYOBSERVER_H__

    18 #define CAUTOAUDIOASYPROPERTYOBSERVER_H__

    19 

    20 #include <e32base.h>

    21 #include <e32property.h>

    22 

    23 class MAutoAudioAsyPropertyListener;

    24 

    25 /**

    26  * This class follows PS key (informs when RTP streaming is enabled or disabled).

    27  */

    28 NONSHARABLE_CLASS(CAutoAudioAsyPropertyObserver): public CActive

    29     {

    30 public:

    31     /**

    32      * Two-phase constructor

    33      */

    34     static CAutoAudioAsyPropertyObserver* NewL ( TUid aCategory, TUint aKey, MAutoAudioAsyPropertyListener& aListener ); 

    35     virtual ~CAutoAudioAsyPropertyObserver ();

    36 

    37 protected:

    38     // CActive

    39     void DoCancel ();

    40     void RunL ();

    41     TInt RunError ( TInt aError );

    42 

    43 private:

    44     CAutoAudioAsyPropertyObserver ( TUid aCategory, TUint aKey, MAutoAudioAsyPropertyListener& aListener );

    45 

    46 private:

    47     /**

    48      * Handle to P&S property.

    49      * Own.

    50      */

    51     RProperty iProperty;

    52 

    53     /**

    54      * The UID of the property we are listening for

    55      */

    56     TUid iCategory;

    57 

    58     /**

    59      * The key we are listening for

    60      */

    61     TUint iKey;

    62 

    63     /**

    64      * Reference to listener class.

    65      * Now own.

    66      */

    67     MAutoAudioAsyPropertyListener& iListener;

    68     };

    69 

    70 #endif // CAUTOAUDIOASYPROPERTYOBSERVER_H__