1 /*

     2 * Copyright (c) 2002-2009 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:  

    15 *

    16 */

    17 

    18 

    19 #ifndef CCLFEVENTHANDLER_H

    20 #define CCLFEVENTHANDLER_H

    21 

    22 //  INCLUDES

    23 #include "CCLFServerProxy.h"

    24 #include <CLFContentListing.h>

    25 #include <e32base.h>

    26 

    27 // FORWARD DECLARATIONS

    28 class MCLFEventHandlerObserver;

    29 

    30 typedef void ( CCLFServerProxy::*TMemberFnOp )( TRequestStatus& aStatus );

    31 typedef TInt ( CCLFServerProxy::*TMemberFnCancel )();

    32 typedef void ( MCLFEventHandlerObserver::*TMemberFnObserver )( TInt aError );

    33 

    34 // CLASS DECLARATION

    35 

    36 /**

    37 *  Item change event handler.

    38 *

    39 *  @lib ContentListingFramework.lib

    40 *  @since Series 60 3.0

    41 */

    42 NONSHARABLE_CLASS( CCLFEventHandler ) : public CActive

    43     {

    44     public:  // Constructors and destructor

    45 

    46         /**

    47         * Two-phased constructor.

    48         */

    49         static CCLFEventHandler* NewL( CCLFServerProxy& aEventHandler,

    50                                        MCLFEventHandlerObserver& aObserver );

    51 

    52         /**

    53         * Destructor.

    54         */

    55         virtual ~CCLFEventHandler();

    56 

    57     public: // New functions

    58 

    59         /**

    60         * Start event observing.

    61         * @since Series 60 3.0

    62         */

    63         void ObserverUpdateStartEvent();

    64 

    65         /**

    66         * Start event observing.

    67         * @since Series 60 3.0

    68         */

    69         void ObserverUpdateEndEvent();

    70 

    71         /**

    72         * Get changed items.

    73         * @since Series 60 3.0

    74         * @param aItemArray changed item ID array

    75         */

    76         void GetChangedItemsL( RArray<TCLFItemId>& aItemArray );

    77 

    78     protected:  // Functions from base classes

    79 

    80         /**

    81         * From CActive

    82         */

    83         void DoCancel();

    84 

    85         /**

    86         * From CActive

    87         */

    88         void RunL();

    89 

    90         /**

    91         * From CActive

    92         */

    93         TInt RunError( TInt aError );

    94 

    95     private:

    96 

    97         void DoStart();

    98 

    99     private:

   100 

   101         /**

   102         * C++ default constructor.

   103         */

   104         CCLFEventHandler( CCLFServerProxy& aEventHandler,

   105                                  MCLFEventHandlerObserver& aObserver );

   106 

   107     private:    // Data

   108         // Ref. 

   109         CCLFServerProxy& iEventHandler;

   110 

   111         // Ref. 

   112         MCLFEventHandlerObserver& iObserver;

   113 

   114         TMemberFnOp iOperationFunction;

   115 

   116         TMemberFnCancel iCancelFunction;

   117         

   118         TMemberFnObserver iObserverFunction;

   119 

   120     };

   121 

   122 #endif // CCLFEVENTHANDLER_H

   123 

   124 // End of File