1 /*

     2 * Copyright (c) 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:  This class is responsible for loading and holding the 

    15 *				 stratergy ecom plugin

    16 *

    17 */

    18 

    19 

    20 #ifndef C_LBTSTRATERGYCONTAINER_H

    21 #define C_LBTSTRATERGYCONTAINER_H

    22 

    23 // INCLUDE FILES

    24 #include <e32base.h>

    25 

    26 // FORWARD DECLARATIONS

    27 class CLbtStrategyBase;

    28 class REComSession;

    29 class MLbtTriggeringSupervisionObserver;

    30 

    31 /**

    32  * Class definition for LBT Stratergy container implementation

    33  * @since S60 v4.0

    34  *

    35  */

    36 class CLbtStratergyContainer : public CActive

    37 	{

    38 	public:

    39 		/**

    40 	     * Instantiates a new object of 

    41 	     * CLbtStratergyContainer

    42 	     *

    43 	     * @return a pointer to an instance of

    44 	     * CLbtStratergyContainer

    45 	     */

    46 	    static CLbtStratergyContainer* NewL();

    47 	    

    48 	    /**

    49 	     * Destructor

    50 	     *

    51 	     */

    52 	    ~CLbtStratergyContainer();

    53 	    

    54 	    /**

    55 	     * This loads the stratergy ecom plugin and starts 

    56 	     * listening to ecom upgrade events.On receiving an

    57 	     * ecom upgrade event, a check is made to determine if

    58 	     * the stratergy plugin is upgraded. If the plugin is

    59 	     * upgraded then the cuurently loaded plugin is unloaded

    60 	     * and the new plugin is loaded.	     

    61 	     *

    62 	     * @param[in] the construction parameters to be sent to

    63 	     * stratergy

    64 	     *

    65 	     */

    66 	    void LoadStratergyL(MLbtTriggeringSupervisionObserver* aPtr);

    67 	    

    68 	    /**

    69 	     * Returns the intance of stratergy 

    70 	     *

    71 	     * @return pointer to the stratergy intance

    72 	     */

    73 	    CLbtStrategyBase* Stratergy();

    74 	    

    75 	    /**

    76 	     * Unloads the stratergy ecom dll and stops

    77 	     * listening to ecom plugin upgrade events

    78 	     *

    79 	     */ 

    80 	    void UnloadStratergy();

    81 	    

    82 	    	    

    83 	protected: // from CActive		

    84 		void RunL();

    85 		TInt RunError(TInt aError);

    86 		void DoCancel();

    87 

    88 	private: 

    89 	    /**

    90 	     * C++ Default constructor

    91 	     *

    92 	     */

    93 	    CLbtStratergyContainer();

    94 	

    95 		/**

    96 	     * 2nd phase constuctor for instantiating 

    97 	     * member variables

    98 	     *

    99 	     */

   100 		void ConstructL();

   101 		

   102 	private: // Data

   103 	

   104 		// Instance of stratergy

   105 		CLbtStrategyBase* iStratergy;

   106 		

   107 		// Handle to RProperty

   108 		RProperty     iProperty;

   109 

   110         // Pointer to the ECom session

   111 		REComSession* iEComSession;

   112 				

   113 		// Holds the version number of the currently 

   114 		// loaded stratergy dll

   115 		TInt iVersion;

   116 	};

   117 

   118 #endif // C_LBTSTRATERGYCONTAINER_H

   119