1 /*

     2 * Copyright (c) 2006-2007 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:  Task for making MDS querys

    15 *

    16 */

    17 

    18 

    19 #ifndef THUMBNAILMDSQUERYTASK_H

    20 #define THUMBNAILMDSQUERYTASK_H

    21 

    22 #include <mdesession.h>

    23 #include <mdccommon.h>

    24 #include <mdeobjectquery.h>

    25 

    26 #include "thumbnailtask.h"

    27 

    28 class CThumbnailServer;

    29 

    30 /**

    31  *  Task for making MDS querys

    32  *

    33  *  @since S60 v5.0

    34  */

    35 class CThumbnailMDSQueryTask: public CThumbnailTask,

    36                               public MMdEQueryObserver

    37     {

    38 public:

    39 

    40     /**

    41      * C++ default constructor

    42      *

    43      * @since S60 v5.0

    44      * @param aProcessor Processor object for running tasks.

    45      * @param aPriority Priority of the request.

    46      * @return New CThumbnailMDSQueryTask object.

    47      */

    48     CThumbnailMDSQueryTask( CThumbnailTaskProcessor& aProcessor, TInt aPriority,

    49                             CMdESession* aMdESession, CThumbnailServer& aServer);

    50 

    51     /**

    52      * Destructor.

    53      *

    54      * @since S60 v5.0

    55      */

    56     virtual ~CThumbnailMDSQueryTask();    

    57     

    58     /**

    59      * StartL

    60      *

    61      * @since S60 v5.0

    62      */

    63     void StartL();

    64 

    65     /**

    66      * Handles an active object's request completion event.

    67      *

    68      * @since S60 v5.0

    69      */

    70     void RunL();

    71 

    72     /**

    73      * Implements cancellation of an outstanding request.

    74      *

    75      * @since S60 v5.0

    76      */

    77     void DoCancel();

    78     

    79     /**

    80      * Query path by id

    81      *

    82      * @since S60 v5.0

    83      * @param aId ID

    84      */

    85     void QueryPathByIdL(TThumbnailId aId);

    86     

    87     /**

    88      * Query Id by path

    89      *

    90      * @since S60 v5.0

    91      * @param aUri the Path

    92      */

    93     void QueryIdByPathL(const TDesC& aUri);

    94     

    95     /**

    96      * Sets are values updated to db automatically

    97      *

    98      * @since S60 v5.0

    99      * @param aComplete message, default is ETrue

   100      */

   101     void SetUpdateToDb(const TBool& aUpdateToDb );

   102 

   103 public:

   104     

   105     // From MMdEQueryObserver

   106     void HandleQueryNewResults( CMdEQuery& aQuery, TInt aFirstNewItemIndex, TInt aNewItemCount );

   107     void HandleQueryCompleted( CMdEQuery& aQuery, TInt aError );    

   108     

   109 protected:

   110     

   111     void ReturnPath(const TDesC& aUri);

   112     

   113 private:

   114    

   115     // not own

   116     CMdESession* iMdESession;

   117     

   118     // own

   119     CMdEObjectQuery* iQuery;

   120     

   121     TThumbnailRequestParamsPckgBuf iRequestParams;

   122     

   123     /**

   124      * Server.

   125      */

   126     CThumbnailServer& iServer;

   127 	

   128      /**

   129      * Query type used when filling missing information from MDS

   130      */

   131      TMDSQueryType iQueryType;

   132      

   133      /**

   134      * Does task update db

   135      */

   136      TBool iUpdateToDb;

   137      

   138      TFileName iUri;

   139 };

   140 

   141 #endif // THUMBNAILMDSQUERYTASK_H