1 /*

     2 * Copyright (c) 2002-2005 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:  Observer for system state changes.

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef MSATSYSTEMSTATEOBSERVER_H

    21 #define MSATSYSTEMSTATEOBSERVER_H

    22 

    23 //  INCLUDES

    24 #include <e32std.h>

    25 

    26 // CLASS DECLARATION

    27 

    28 /**

    29 *  Observer for system state changes.

    30 *

    31 *  @lib SatSystemState.lib

    32 *  @since Series 60 3.0

    33 */

    34 class MSatSystemStateObserver

    35     {

    36     public: // New functions

    37 

    38         /**

    39         * Notifies that system state changed.

    40         */

    41         virtual void StateChanged() {};

    42 

    43         /**

    44         * Notifies that system state changed.

    45         * @param aValue The new value that has changed.

    46         */

    47         virtual void StateChanged( const TInt /*aValue*/ ) {};

    48 

    49         /**

    50         * Notifies that system state changed.

    51         * @param aValue The new value that has changed.

    52         */

    53         virtual void StateChanged( const TReal& /*aValue*/ ) {};

    54 

    55         /**

    56         * Notifies that system state changed.

    57         * @param aValue The new value that has changed.

    58         */

    59         virtual void StateChanged( const TDesC8& /*aValue*/ ) {};

    60 

    61         /**

    62         * Notifies that system state changed.

    63         * @param aValue The new value that has changed.

    64         */

    65         virtual void StateChanged( const TDesC16& /*aValue*/ ) {};

    66 

    67     protected:  // New functions

    68 

    69         /**

    70         * Destructor.

    71         */

    72         virtual ~MSatSystemStateObserver() {};

    73 

    74         /**

    75         * C++ default constructor.

    76         */

    77         MSatSystemStateObserver() {};

    78 

    79     private:

    80 

    81         // Prohibit copy constructor if not deriving from CBase.

    82         MSatSystemStateObserver( const MSatSystemStateObserver& );

    83 

    84         // Prohibit assigment operator if not deriving from CBase.

    85         MSatSystemStateObserver& operator=( const MSatSystemStateObserver& );

    86 

    87     };

    88 

    89 #endif      // MSATSYSTEMSTATEOBSERVER_H

    90 

    91 // End of File