1 /*

     2 * Copyright (c) 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:  Delete object operation

    15 *

    16 */

    17 

    18 

    19 #ifndef CDELETEOBJECT_H

    20 #define CDELETEOBJECT_H

    21 

    22 #include <f32file.h>

    23 #include <d32dbms.h>

    24 #include <badesca.h>

    25 

    26 #include "crequestprocessor.h"

    27 

    28 //forward declaration

    29 class RFs;

    30 class CMTPTypeArray;

    31 class MMTPObjectMgr;

    32 class MMmMtpDpConfig;

    33 

    34 /**

    35 * Defines DeleteObject request processor

    36 */

    37 class CDeleteObject : public CRequestProcessor

    38     {

    39 public:

    40     /**

    41     * Two-phase construction method

    42     * @param aFramework    The data provider framework

    43     * @param aConnection    The connection from which the request comes

    44     * @param aWrapper    medadata access interface

    45     * @return a pointer to the created request processor object

    46     */

    47     IMPORT_C static MMmRequestProcessor* NewL( MMTPDataProviderFramework& aFramework,

    48         MMTPConnection& aConnection,

    49         MMmMtpDpConfig& aDpConfig );

    50 

    51     /**

    52     * Destructor

    53     */

    54     IMPORT_C virtual ~CDeleteObject();

    55 

    56 private:

    57     /**

    58     * Standard c++ constructor

    59     * @param aFramework    The data provider framework

    60     * @param aConnection    The connection from which the request comes

    61     * @param aWrapper    medadata access interface

    62     */

    63     IMPORT_C CDeleteObject( MMTPDataProviderFramework& aFramework,

    64         MMTPConnection& aConnection,

    65         MMmMtpDpConfig& aDpConfig );

    66 

    67 protected:

    68     //from CRequestProcessor

    69     /**

    70     * DeleteObject request handler

    71     */

    72     IMPORT_C void ServiceL();

    73 

    74     //from CActive

    75     /**

    76     * AO Run method, deletes a selection of files on the system

    77     */

    78     IMPORT_C void RunL();

    79 

    80     /**

    81     * Used to cancel the deletion of the files

    82     */

    83     IMPORT_C void DoCancel();

    84 

    85 private:

    86     void ConstructL();

    87     /**

    88     * Control the deletion

    89     */

    90     void StartL();

    91     /**

    92     * Delete all child objects of an association recursively.

    93     */

    94     void DeleteAllChildrenL();

    95 

    96     /**

    97     * Delete all of the associations if file deletion was successful

    98     * Then signals that the deletion has been completed

    99     */

   100     void ProcessFinalPhaseL();

   101 

   102     /**

   103     * Gets all object handles (for GetObjectHandlesL)

   104     */

   105     void GetObjectHandlesL( TUint32 aStorageId, TUint32 aParentHandle );

   106 

   107     /**

   108     * Deletes an object from the file system and the object store

   109     */

   110     void DeleteObjectL( const CMTPObjectMetaData& aObjectInfo );

   111 

   112 private:

   113     // MTP Object Manager

   114     MMTPObjectMgr& iObjectMgr;

   115 

   116     // File server used to open the database

   117     RFs& iFs;

   118 

   119     //  Array of all the objects to delete

   120     RArray<TUint> iObjectsToDelete;

   121 

   122     // Keeps track of any errors that occur

   123     TInt iDeleteError;

   124 

   125     // Keeps track of whether any files where deleted

   126     TBool iIsMultiDelete;

   127 

   128     // Accessor of DB

   129     MMmMtpDpConfig& iDpConfig;

   130     };

   131 

   132 #endif // CDELETEOBJECT_H