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 the License "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:  Task base class.

    15 *

    16 */

    17 

    18 

    19 #ifndef TASK_H

    20 #define TASK_H

    21 

    22 

    23 // INCLUDES

    24 #include <e32base.h>

    25 

    26 // CONSTANTS

    27 

    28 // MACROS

    29 

    30 // DATA TYPES

    31 

    32 // FUNCTION PROTOTYPES

    33 

    34 // FORWARD DECLARATIONS

    35 class CIdle;

    36 class CFeedsServer;

    37 

    38 // CLASS DECLARATION

    39 

    40 

    41 /**

    42 *  Task base class.  To cancel a task just simply delete it.

    43 *

    44 *  \b Library: FeedsEngine.lib

    45 *

    46 *  @since 3.0

    47 */

    48 class CTask: public CBase

    49     {

    50     public: // Destructor

    51         /**

    52         * Destructor.

    53         */        

    54         virtual ~CTask();

    55         

    56         

    57     public: // New Methods

    58         /**

    59         * Starts the task.

    60         *

    61         * @since 3.0

    62         * @return Void

    63         */

    64         virtual void StartTaskL() = 0;

    65         

    66         /**

    67         * Starts an CIdle to delete the instance after the callstack has unrolled.

    68         *

    69         * @since 3.0

    70         * @return Void

    71         */

    72         void AutoDelete();

    73         

    74 

    75     protected:

    76         /**

    77         * C++ default constructor.

    78         */

    79         CTask(CFeedsServer& aFeedsServer);

    80         

    81         /**

    82         * By default Symbian 2nd phase constructor is private.

    83         */

    84         void BaseConstructL(TBool aAutoDelete);

    85 

    86         

    87     private:

    88         /**

    89         * Deletes the instance after the callstack has unrolled..

    90         *

    91         * @since 3.0

    92         * @return Void

    93         */

    94         static TInt DelayedDelete(TAny* aPtr);

    95                

    96         

    97     protected:

    98         CFeedsServer&  iFeedsServer;

    99 

   100 

   101     private:

   102         CIdle*         iAutoDelete;    

   103     };

   104 

   105 #endif      // TASK_H

   106             

   107 // End of File