1 /*

     2 * Copyright (c) 2006 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:  Definitions for incremental open command type

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef MPXINCREMENTALOPENDEFS_H

    21 #define MPXINCREMENTALOPENDEFS_H

    22 

    23 #include <mpxattribute.h>

    24 

    25 /**

    26  * Content ID for opening incrementally

    27  */

    28 const TInt KMPXCommandIdIncrementalOpenL = 0x1028297B;

    29 

    30 /**

    31  * Enumeration for ascending or decending

    32  */

    33 enum TReadDirection

    34     {

    35     EReadUnknown = -1,

    36     EReadDescending = 0,

    37     EReadAscending = 1

    38     };

    39 

    40 /**

    41  *  Attributes supported for KMPXCommandIdIncrementalOpenL

    42  */    

    43 

    44 /**

    45  * The collection path to open (CMPXCollectionPath)

    46  */    

    47 const TMPXAttributeData KMPXCollectionCommandIdIncOpenLPath = {

    48                         KMPXCommandIdIncrementalOpenL, 0x01};

    49 

    50 /**

    51  * Offset to start reading from (TInt)

    52  */ 

    53 const TMPXAttributeData KMPXCollectionCommandIdIncOpenLOffset = {

    54                         KMPXCommandIdIncrementalOpenL, 0x02};

    55 

    56 /**

    57  * Number of items to read (TInt)

    58  */                         

    59 const TMPXAttributeData KMPXCollectionCommandIdIncOpenLNumItems = {

    60                         KMPXCommandIdIncrementalOpenL, 0x04};

    61 

    62 /**

    63  * Read ascending or decending (EReadDescending for dsc, 

    64  *                              EReadAscending for asc)

    65  * 

    66  * Can use ascending read if a key item can be provided for faster access

    67  */                         

    68 const TMPXAttributeData KMPXCollectionCommandIdIncOpenLAscDsc = {

    69                         KMPXCommandIdIncrementalOpenL, 0x08};

    70 

    71 /**

    72  * Value of some key (TDesC) to accelerate open db

    73  *

    74  * For example, KMPXMediaGeneralTitle can be used

    75  * as a reference for plugins to quickly jump to the 

    76  * last retrieved item

    77  */                         

    78 const TMPXAttributeData KMPXCollectionCommandIdIncOpenLKeyItem = {

    79                         KMPXCommandIdIncrementalOpenL, 0x10};

    80                         

    81 #endif // MPXINCREMENTALOPENDEFS_H