clock2/clockengines/clocktimesourceinterface/inc/clocktimesourceinterface.h
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     1 /*
       
     2 * Copyright (c) 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:   The header file for the CClockTimeSourceInterface class.
       
    15 *
       
    16 */
       
    17 
       
    18 #ifndef __CLOCK_TIMESOURCE_INTERFACE_H__
       
    19 #define __CLOCK_TIMESOURCE_INTERFACE_H__
       
    20 
       
    21 // System includes
       
    22 #include <e32std.h>
       
    23 #include <e32base.h>
       
    24 
       
    25 // User includes
       
    26 #include "clocktimesourceinterface.hrh"
       
    27 
       
    28 // Forward declarations
       
    29 class MClockPluginObserver;
       
    30 
       
    31 /** 
       
    32 * @brief This is an interface class that needs to be implemented by
       
    33 *        every ECOM based plugin which updates the device time.
       
    34 * @dll clocktimesourceinterface.dll
       
    35 */
       
    36 class CClockTimeSourceInterface : public CBase
       
    37 	{
       
    38 	public:			// Constructor and Destructor
       
    39 
       
    40 		/**
       
    41 		* @brief Two phases constructor, to construct the object of the 
       
    42 		*        ECOM implementation referred to by the aImpId.
       
    43 		* @param aImpId Implementation id of the ECOM implementation to be loaded.
       
    44 		* @return CClockTimeSourceInterface* Pointer to an instance of aImpId.
       
    45 		*/
       
    46 		IMPORT_C static CClockTimeSourceInterface* NewL( const TUid& aPluginId,
       
    47     								  					 MClockPluginObserver* aObserver );
       
    48 		
       
    49 		/**
       
    50 		* @brief Destroy the object and release all memory objects
       
    51 		*/
       
    52 	  	IMPORT_C ~CClockTimeSourceInterface();
       
    53 
       
    54 	public:			// New functions
       
    55 
       
    56 		
       
    57 		/**
       
    58 		* @brief Gets the UTC Time, pure virtual, to be implemented by the plugin.
       
    59 		* @param aInterfaceAttribute anyone of enum TInterfaceAttribute defined in clocktimesourceinterface.hrh
       
    60 		* @param aTimeAttributes The type of data requested
       
    61 		*/
       
    62 		IMPORT_C virtual void GetTimeInformationL( TInterfaceAttribute aInterfaceAttribute,
       
    63 		                                           STimeAttributes* aTimeAttributes ) = 0;
       
    64 		
       
    65 		/**
       
    66 		* @brief Gets the UTC Time, pure virtual, to be implemented by the plugin.
       
    67 		* @param aInterfaceAttribute anyone of enum TInterfaceAttribute defined in clocktimesourceinterface.hrh
       
    68 		* @param aPtr TAny* to the type of data requested
       
    69 		*/
       
    70 		IMPORT_C virtual void NotifyOnTimeChange( TInterfaceAttribute aInterfaceAttribute ) = 0;
       
    71 		
       
    72 		/**
       
    73 		* @brief Returns the plugin implementation id. Unique for each plugin.
       
    74 		* @return TInt The Uid of the plugin.
       
    75 		*/
       
    76 		IMPORT_C virtual TInt GetPluginUid() = 0;
       
    77 						
       
    78 	private:		// New functions
       
    79 	
       
    80 		/**
       
    81 		* @brief Symbiam OS 2nd Phase construct, performs the 2nd phase construction.
       
    82 		* @param aPluginId The UID of the plugin that needs to be constructed
       
    83 		* @param aObserver An observer of type MClockPluginObserver
       
    84 		*/
       
    85 		void ConstructL( MClockPluginObserver* aObserver );
       
    86 		
       
    87 	protected:		// Data
       
    88 
       
    89 		/**
       
    90 		* @var iObserver
       
    91 		* @brief This is essentially the ClockServer which is waiting for notification from the implementations.
       
    92 		*/
       
    93 		MClockPluginObserver*           iObserver;
       
    94 		
       
    95 		/**
       
    96 		* @var iPluginId
       
    97 		* @brief The plugin UID.
       
    98 		*/
       
    99 		TUid                            iPluginId;
       
   100 		
       
   101 	private:       // Data
       
   102 
       
   103         /**
       
   104         * @var iDtor_ID_key
       
   105         * @brief Implementation UID of the Time updater implementation.
       
   106         */
       
   107         TUid                            iDtor_ID_key;
       
   108 	};
       
   109 
       
   110 #endif		// __CLOCK_TIMESOURCE_INTERFACE_H__
       
   111 
       
   112 // End of file