1 /*

     2 * Copyright (c) 2006 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:  Active object for subscribing to Publish & Suscribe properties 

    15 *

    16 */

    17 

    18 

    19 #ifndef VUICPROPERTYHANDLER_H

    20 #define VUICPROPERTYHANDLER_H

    21 

    22 // INCLUDES

    23 #include <e32base.h>

    24 #include <e32property.h>

    25 

    26 // FORWARDS

    27 class CVoiceRecognitionDialogImpl;

    28 

    29 // CLASS DECLARATION

    30 

    31 /**

    32 * Active object for subscribing to Publish & Suscribe properties

    33 */

    34 NONSHARABLE_CLASS( CPropertyHandler ) : public CActive

    35     {

    36     public:  // Constructors and destructor

    37         /**

    38         * Symbian two-phased constructor.

    39         * @param aCategory Category of the property to watch

    40         * @param aKey      Key UID of the property to watch

    41         * @param aCallback Callback to get notifications about changes

    42         */

    43         static CPropertyHandler* NewL( TUid aFirstCategory,

    44                                        TUint aFirstKey,

    45                                        TUid aSecondCategory,

    46                                        TUint aSecondkey);

    47 

    48         // Destructor

    49         virtual ~CPropertyHandler();

    50 

    51     public:  // New functions

    52         

    53         /**

    54         * Method to handle the deregistration of monitoring accessories

    55         * @param 

    56         */  

    57         void Register( CVoiceRecognitionDialogImpl* aRecogObserver );

    58 

    59         /**

    60         * Method to handle the deregistration of monitoring accessories

    61         * @param 

    62         */  

    63         void DeRegister( CVoiceRecognitionDialogImpl* aRecogObserver );

    64 

    65     private: // Functions from base classes

    66 

    67         /**

    68         * From CActive.

    69         * Handle a change event.

    70         */

    71         void RunL();

    72 

    73         /**

    74         * From CActive.

    75         * Cancel the request to receive events.

    76         */

    77         void DoCancel();

    78 

    79     private: // New functions

    80 

    81         /**

    82         * Symbian OS 2nd phase constructor.

    83         */

    84         void ConstructL( TUid aFirstCategory,

    85                          TUint aFirstKey,

    86                          TUid aSecondCategory,

    87                          TUint aSecondKey );

    88 

    89         /**

    90         * C++ constructor.

    91         */

    92         CPropertyHandler();

    93 

    94     private:    // Data

    95 

    96         RProperty                       iProperty;

    97         TCallBack                       iCallback;

    98         TBool                           iRequestIssued;

    99         CVoiceRecognitionDialogImpl*    iRecogObserver;

   100         TUid                            iFirstCategory;

   101         TUint                           iFirstKey;

   102     };

   103 

   104 #endif    // VUICPROPERTYHANDLER_H

   105 

   106 // End of File