ncdengine/inc/ncdloadnodeoperation.h
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     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:   Node load operation interface definition
       
    15 *
       
    16 */
       
    17 	
       
    18 
       
    19 #ifndef M_NCDLOADNODEOPERATION_H
       
    20 #define M_NCDLOADNODEOPERATION_H
       
    21 
       
    22 #include <e32cmn.h>
       
    23 
       
    24 #include "ncdoperation.h"
       
    25 #include "catalogsarray.h"
       
    26 #include "ncdinterfaceids.h"
       
    27 
       
    28 class MNcdLoadNodeOperationObserver;
       
    29 
       
    30 /**
       
    31  *  Load node operation interface.
       
    32  *
       
    33  *  Load node operations handle the loading of one or more nodes from a server.
       
    34  *  One typical use case is the loading of a catalog's child nodes.
       
    35  *  
       
    36  *  Node load operations send callbacks when one ore more nodes have been
       
    37  *  loaded. This can be used to display the loaded nodes even if the whole
       
    38  *  operation has not yet completed.
       
    39  *  
       
    40  *  
       
    41  *  @see MNcdNode
       
    42  *  @see MNcdLoadNodeOperationObserver
       
    43  */
       
    44 class MNcdLoadNodeOperation : public MNcdOperation
       
    45     {
       
    46 
       
    47 public:
       
    48 
       
    49     /**
       
    50      * Unique identifier for the interface, required for all MCatalogsBase interfaces.
       
    51      *
       
    52      * 
       
    53      */
       
    54     enum { KInterfaceUid = ENcdLoadNodeOperationUid };
       
    55     
       
    56 protected:
       
    57 
       
    58     /**
       
    59     * Destructor.
       
    60     *
       
    61     * @see MCatalogsBase::~MCatalogsBase
       
    62     */
       
    63     virtual ~MNcdLoadNodeOperation() {}
       
    64 
       
    65     };
       
    66 	
       
    67 	
       
    68 #endif //  M_NCDLOADNODEOPERATION_H