1 /*

     2 * Copyright (c) 2004 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:   Definition of the event observer class

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef CENVIRONMENTALREVERBEVENTOBSERVER_H

    22 #define CENVIRONMENTALREVERBEVENTOBSERVER_H

    23 

    24 // INCLUDES

    25 #include <e32base.h>

    26 #include "EnvironmentalReverbProxy.h"

    27 

    28 

    29 // CLASS DECLARATION

    30 

    31 /**

    32 *  EnvironmentalReverb event observer provides encapsulates a monitoring request towards the message handler.

    33 *

    34 *  @lib EnvironmentalReverbProxy.lib

    35 *  @since 3.0

    36 */

    37 class CEnvironmentalReverbEventObserver : public CActive

    38     {

    39     public: // Constructors and destructor

    40 

    41         /**

    42         * Two-phased constructor.

    43         */

    44         static CEnvironmentalReverbEventObserver* NewL(TMMFMessageDestinationPckg aMessageHandler, MCustomCommand& aCustomCommand,

    45         								  		  MEnvironmentalReverbCallback& aCallback);

    46 

    47         /**

    48         * Destructor.

    49         */

    50         virtual ~CEnvironmentalReverbEventObserver();

    51 

    52     public: // New functions

    53 

    54         /**

    55         * Start event monitoring

    56         * @since 3.0

    57         */

    58         void Start();

    59 

    60        	/**

    61         * Stop event monitoring

    62         * @since 3.0

    63         */

    64         void Stop();

    65 

    66 

    67     private:

    68 

    69         /**

    70         * C++ default constructor.

    71         */

    72         CEnvironmentalReverbEventObserver();

    73 

    74         /**

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

    76         */

    77         void ConstructL(TMMFMessageDestinationPckg aMessageHandler, MCustomCommand& aCustomCommand,

    78         				MEnvironmentalReverbCallback& aCallback);

    79 

    80         void RunL();

    81 

    82         void DoCancel();

    83 

    84     private:

    85 

    86 		// Pointer to custom command utility

    87 		MCustomCommand* iCustomCommand;

    88 		// Message handler handle

    89 		TMMFMessageDestinationPckg iMessageHandler;

    90 		// EnvironmentalReverb change event Callbacks

    91 		MEnvironmentalReverbCallback* iCallback;

    92 		// Data package received from server

    93 		TEfEnvReverbDataPckg iDataPckgFrom;

    94 		//

    95 		TBool iStopped;

    96 	};

    97 

    98 #endif 		// CENVIRONMENTALREVERBEVENTOBSERVER_H

    99