1 /*

     2 * Copyright (c) 2008-2008 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:  Encapsulates singleton client and provided observer

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef C_CCHUICLIENTOBSERVER_H

    21 #define C_CCHUICLIENTOBSERVER_H

    22 

    23 #include <e32base.h>

    24 #include <e32const.h>

    25 

    26 class MCchUiObserver;

    27 

    28 /**

    29  * This class stores client provider reference and api instance used to create

    30  * it. Those can be mapped when api instance is deleted to remove observer. 

    31  * This way singleton instance will not call observers that are already deleted.

    32  * This class implements the use of Service provider settings.

    33  *

    34  * @code

    35  * @endcode

    36  *

    37  * @lib cchui.lib

    38  * @since S60 5.0

    39  */

    40 NONSHARABLE_CLASS( CCchUiClientObserver ): public CBase

    41     {

    42 public:

    43     

    44     /**

    45      * Two-phased constructor.

    46      */

    47     static CCchUiClientObserver* NewL( MCchUiObserver& aObserver);

    48     

    49     /**

    50      * Two-phased constructor.

    51      */

    52     static CCchUiClientObserver* NewLC( MCchUiObserver& aObserver );

    53 

    54     /**

    55      * Destructor.

    56      */

    57     virtual ~CCchUiClientObserver();

    58       

    59     /**

    60      * Return observer.

    61      *

    62      * @since S60 5.0

    63      * @return observer reference

    64      */

    65     MCchUiObserver& Observer();

    66 

    67 private:

    68 

    69     CCchUiClientObserver( MCchUiObserver& aObserver );

    70 

    71 private: // data

    72 

    73     /**

    74      * Observer reference.

    75      */

    76     MCchUiObserver& iObserver;

    77     };

    78 

    79 #endif // C_CCHUICLIENTOBSERVER_H