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:  Monitor of idle screen availability.

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef CSATIDLESCREENMONITOR_H

    21 #define CSATIDLESCREENMONITOR_H

    22 

    23 //  INCLUDES

    24 #include "MSatSystemStateObserver.h"

    25 #include "CSatEventMonitorHandler.h"

    26 

    27 // CLASS DECLARATION

    28 class MSatSystemStateChangeNotifier;

    29 

    30 /**

    31 *  Monitors idle screen state and informs SAT Engine if idle screen is available

    32 *

    33 *  @lib EventMonitors.lib

    34 *  @since Series 60 3.0

    35 */

    36 class CSatIdleScreenMonitor : public CSatEventMonitorHandler,

    37                               public MSatSystemStateObserver

    38     {

    39     public:  // Constructor and destructor

    40 

    41         /**

    42         * Two-phased constructor.

    43         * @param aUtils Interface for Event monitor utils

    44         */

    45         static CSatIdleScreenMonitor* NewL(

    46             MSatEventMonitorUtils& aUtils );

    47 

    48         /**

    49         * Destructor.

    50         */

    51         virtual ~CSatIdleScreenMonitor();

    52 

    53     public: // From base class

    54 

    55         /**

    56         * From CSatEventMonitorHandler Cancels event monitoring

    57         */

    58         void DoCancelMonitor();

    59 

    60         /**

    61         * From MSatSystemStateObserver Notifies that system state changed.

    62         */

    63         void StateChanged();

    64 

    65     protected: // New functions

    66 

    67         /**

    68         * From CSatEventMonitorHandler Starts event monitoring

    69         * @return Error code indicating the status of starting the monitor

    70         */

    71         TInt StartMonitor();

    72 

    73     private:

    74 

    75         /**

    76         * C++ default constructor.

    77         * @param aUtils Interface for Event monitor utils

    78         */

    79         CSatIdleScreenMonitor( MSatEventMonitorUtils& aUtils );

    80 

    81         // ConstructL

    82         void ConstructL();

    83 

    84     private: // Data

    85 

    86         // P&S change notifier

    87         MSatSystemStateChangeNotifier* iPSNotifier;

    88 

    89     };

    90 

    91 #endif      // CSATIDLESCREENMONITOR_H

    92 

    93 // End of File