devsoundextensions/globalaudiosettings/src/AudioClientsListManagerAO.h
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     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:   This file contains definitions of Audio Clients List Manager.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 #ifndef AUDIOCLIENTSLISTMANAGERAO_H
       
    22 #define AUDIOCLIENTSLISTMANAGERAO_H
       
    23 
       
    24 #include <e32base.h>
       
    25 #include <GlobalAudioSettings.h>
       
    26 #include <e32property.h>
       
    27 
       
    28 /**
       
    29 *  Defines audio clients list manager class.
       
    30 *
       
    31 *  @lib GlobalAudioSettings.lib
       
    32 *  @since Series 60 3.2
       
    33 */
       
    34 class CAudioClientsListManagerAO: public CActive
       
    35     {
       
    36     public:
       
    37         // 2 Phase constructor
       
    38         static CAudioClientsListManagerAO* NewL(
       
    39                                             CGlobalAudioSettings& aGlobalAudioSettings,
       
    40                                             RPointerArray<MAudioClientsListObserver>& aArray,
       
    41                                             TUint32 aKey );
       
    42         // Destructor
       
    43         ~CAudioClientsListManagerAO();
       
    44         // Starts monitoring audio clients list
       
    45         TInt MonitorStart();
       
    46         // Stops monitoring audio clients list
       
    47         TInt MonitorStop();
       
    48         // Returns the audio clients list
       
    49         TInt GetAudioClientsList(
       
    50                     CGlobalAudioSettings::TAudioClientListType aType,
       
    51                     RArray<TProcessId>& aList );
       
    52 
       
    53     protected:
       
    54         // From CActive begins
       
    55         void RunL();
       
    56         void DoCancel();
       
    57         TInt RunError(TInt aError);
       
    58         // From CActive ends
       
    59     
       
    60     private:
       
    61         // Constructor
       
    62          CAudioClientsListManagerAO(CGlobalAudioSettings& aGlobalAudioSettings,
       
    63                 					RPointerArray<MAudioClientsListObserver>& aArray,
       
    64                 					TUint32 aKey );
       
    65         // 2nd phase constructor
       
    66         void ConstructL();
       
    67 
       
    68     private:
       
    69         // Handle to property
       
    70         RProperty iActiveAudioClients;
       
    71         // Reference to CGlobalAudioSettings
       
    72         CGlobalAudioSettings& iGlobalAudioSettings;
       
    73         // List of Audio Clients List Observer objects
       
    74         RPointerArray<MAudioClientsListObserver>& iAudioClientsListObserverArray;        
       
    75         //P&S key
       
    76         TUint32 iKey;
       
    77     };
       
    78 
       
    79 #endif  // AUDIOCLIENTSLISTMANAGERAO_H
       
    80 
       
    81 // End of file