contextframework/cfwplugins/displaysourceplugin/inc/displayservicelight.h
changeset 0 2e3d3ce01487
equal deleted inserted replaced
-1:000000000000 0:2e3d3ce01487
       
     1 /*
       
     2 * Copyright (c) 2009-2009 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:  CDisplayServiceLight class declaration.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef DISPLAYSERVICELIGHT_H
       
    20 #define DISPLAYSERVICELIGHT_H
       
    21 
       
    22 // SYSTEM INCLUDE FILES
       
    23 #include <hwrmlight.h>
       
    24 
       
    25 // USER INCLUDE FILES
       
    26 #include "displayservicebase.h"
       
    27 
       
    28 // FORWARD DECLARATIONS
       
    29 
       
    30 // DATA TYPES
       
    31 
       
    32 // CLASS DECLARATION
       
    33 
       
    34 /**
       
    35  * Display light service provides context information about
       
    36  * the display light status.
       
    37  *
       
    38  * @lib None.
       
    39  * @since S60 5.0
       
    40  */
       
    41 NONSHARABLE_CLASS( CDisplayServiceLight ): public CDisplayServiceBase,
       
    42 public MHWRMLightObserver
       
    43     {
       
    44 public:
       
    45 
       
    46     /**
       
    47      * Symbian two phased constructors.
       
    48      *
       
    49      * @since S60 5.0
       
    50      * @param aCF Interface to Context Access API.
       
    51      * @return CDisplayServiceLight*
       
    52      */
       
    53     static CDisplayServiceLight* NewL( MCFContextInterface& aCF );
       
    54     static CDisplayServiceLight* NewLC( MCFContextInterface& aCF );
       
    55 
       
    56     /**
       
    57      * C++ destructor.
       
    58      */
       
    59     virtual ~CDisplayServiceLight();
       
    60     
       
    61 public: // From base classes
       
    62     
       
    63     // @see CDisplayServiceBase
       
    64     virtual void StartL();
       
    65 
       
    66     // @see CDisplayServiceBase
       
    67     virtual void Stop();
       
    68     
       
    69     // @see MHWRMLightObserver
       
    70     virtual void LightStatusChanged( TInt aTarget,
       
    71         CHWRMLight::TLightStatus aStatus );
       
    72 
       
    73 private: // New methods
       
    74 
       
    75     // Publishes the display state value
       
    76     void PublishContext( CHWRMLight::TLightStatus aStatus );
       
    77 
       
    78 private:
       
    79 
       
    80     CDisplayServiceLight( MCFContextInterface& aCF );
       
    81     void ConstructL();
       
    82 
       
    83 private: // Data
       
    84 
       
    85     /** HWRM Light client connection */
       
    86     CHWRMLight* iLight;
       
    87 
       
    88     /** Last light status stored to avoid publishing state status twice */
       
    89     CHWRMLight::TLightStatus iCurrentStatus;
       
    90     };
       
    91 
       
    92 #endif // DISPLAYSERVICELIGHT_H