1 /*

     2 * Copyright (c) 2002 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: 

    15 *       Logs.app global variables. A singleton class.

    16 *

    17 */

    18 

    19 

    20 #ifndef CLogsViewGlobals_H

    21 #define CLogsViewGlobals_H

    22 

    23 

    24 //  INCLUDES

    25 #include <e32base.h>

    26 

    27 #include "MLogsExtensionFactory.h"

    28 

    29 // FORWARD DECLARATIONS

    30 class CLogsExtensionLoader;

    31 

    32 // CLASS DECLARATION

    33 

    34 /**

    35  * Logs.app global variables. A singleton class.

    36  */

    37 class CLogsViewGlobals : private CBase

    38     {

    39     public: // Constructors and destructor

    40         /**

    41          * Returns the singleton CLogsViewGlobals instance. If no instance

    42 		 * exists yet it is created.

    43          */

    44         static CLogsViewGlobals* InstanceL();

    45 

    46 		/**

    47 		 * Pushes this object on to the cleanup stack.

    48 		 */

    49 		void PushL();

    50 

    51     public: // New functions

    52 		/**

    53 		 * Returns view extension factory. If no instance exists yet it is 

    54 		 * created.

    55 		 */

    56 		MLogsExtensionFactory& ExtensionFactoryL();

    57 

    58     private: // Interface for Release(CLogsViewGlobals*)

    59 		friend void Release(CLogsViewGlobals*);

    60         virtual void DoRelease();

    61 		static void CleanupRelease(TAny* aObj);

    62 

    63     private:  // Implementation

    64         CLogsViewGlobals();

    65         void ConstructL();

    66         static CLogsViewGlobals* NewLC();

    67         ~CLogsViewGlobals();

    68         void IncRef();

    69         TInt DecRef();

    70         TInt RefCount();

    71 

    72     private:  // Data

    73         /// Own: reference count for InstanceL calls

    74         TInt iRefCount;

    75         /// Own: for loading dll and getting extension factory

    76         CLogsExtensionLoader* iLoader;

    77 

    78         //

    79         //Static pointer to singleton instance of this class

    80     public:        

    81         static CLogsViewGlobals* singleThis;

    82     };

    83 

    84 

    85 // INLINE FUNCTIONS

    86 

    87 inline void CLogsViewGlobals::PushL()

    88 	{

    89     CleanupStack::PushL(TCleanupItem(CleanupRelease,this)); 

    90 	}

    91 

    92 inline void Release(CLogsViewGlobals* aObj)

    93 	{

    94 	if (aObj)

    95 		{

    96 		aObj->DoRelease();

    97 		}

    98 	}

    99 

   100 inline void CLogsViewGlobals::CleanupRelease(TAny* aObj)

   101     { 

   102     Release(static_cast<CLogsViewGlobals*>(aObj)); 

   103     }

   104 

   105 

   106 #endif

   107             

   108 

   109 // End of File