1 /*

     2 * Copyright (c) 2002 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 *     Reqisters Mce to LogEng to get notification about log DB changes.

    16 *

    17 */

    18 

    19 

    20 

    21 #ifndef __Mce_Engine_CMceLogNotify_H__

    22 #define __Mce_Engine_CMceLogNotify_H__

    23 

    24 //  INCLUDES

    25 

    26 #include <e32base.h>

    27 #include <f32file.h>

    28 

    29 // FORWARD DECLARATIONS

    30 

    31 class CLogClient;

    32 class CMceLogEngine;

    33 

    34 // CLASS DECLARATION

    35 

    36 /**

    37  * Observer for the log database. Issues request to the underlying

    38  * asyncronous service provider, which tells if changes in the DB

    39  * had happened.

    40  */

    41 class CMceLogNotify : public CActive

    42 

    43     {

    44     public:     // Constructors.

    45         /**

    46          * Standard creation function. Creates and returns a new object of this

    47          * class.

    48          *

    49          * @param aObserver pointer to observer.

    50          * @param aDelay notification delay in microseconds.

    51          * @return  pointer to CMceLogNotify instance.

    52          */

    53         static CMceLogNotify* NewL( CMceLogEngine* aObserver,

    54                                   TTimeIntervalMicroSeconds32 aDelay );

    55 

    56         /**

    57          *  Destructor.

    58          */

    59         ~CMceLogNotify();

    60 

    61 

    62         /**

    63          *  Issues request to asyncronous service provider

    64          */

    65         void IssueNotifyRequest();

    66 

    67 

    68     private:    // Constructions.

    69         /**

    70          * Constructor, second phase.

    71          */

    72         void ConstructL();

    73 

    74         /**

    75          * Default Constructor

    76          */

    77         CMceLogNotify();

    78 

    79         /**

    80          * Constructor

    81          *

    82          * @param aObserver pointer to observer.

    83          * @param aDelay notification delay in microseconds.

    84          */

    85         CMceLogNotify( CMceLogEngine* aObserver,

    86                      TTimeIntervalMicroSeconds32 aDelay);

    87 

    88     private:     // Operations from CActive

    89         /**

    90          * This is called when a request to a log engine is completed.

    91          */

    92         void RunL();

    93 

    94         /**

    95          * Cancels active request.

    96          */

    97         void DoCancel();

    98 

    99     private: // data

   100         /// Ref: Messaging Centre log engine.

   101         CMceLogEngine* iObserver;

   102         /// Own: File System session

   103         RFs iFsSession;

   104         /// Own: Pointer to the log client.

   105         CLogClient* iLogClient;

   106         /// Own: Notification delay in microseconds.

   107         TTimeIntervalMicroSeconds32 iDelay;

   108 

   109     };

   110 

   111 #endif // __Mce_Engine_CMceLogNotify_H__

   112 

   113 // End of file