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: Media Fetch plug-in list handler

    15 *

    16 */

    17 

    18 // INCLUDES

    19 #include <e32base.h>

    20 #include <bamdesca.h>

    21 

    22 /**

    23 * MAudioFetcherListHandlerObserver

    24 * 

    25 * CAudioFetcherListHandler uses MAudioFetcherListHandlerObserver to get listbox item texts.

    26 */

    27 class MAudioFetcherListHandlerObserver

    28     {

    29     public:

    30         virtual TPtrC ConstructListboxItem( TInt aListIndex ) = 0;

    31         virtual TInt ListboxItemCount() = 0;

    32     };

    33 

    34 /**

    35 * CMFListHandler

    36 * 

    37 * This class is used as listbox model's item array. Listbox uses it to draw 

    38 * list items. CAudioFetcherListHandler gets list item texts from CAudioFetcherFileHandler

    39 * (metadata query result). This way there is no need to copy all list items

    40 * into listbox model.  

    41 */

    42 class CAudioFetcherListHandler : public CBase, public MDesCArray

    43     {

    44     public:

    45         static CAudioFetcherListHandler* NewL();

    46         virtual ~CAudioFetcherListHandler();

    47         

    48     private:

    49         

    50         void ConstructL();

    51         CAudioFetcherListHandler();

    52 

    53     public:  // from MDesCArray

    54         

    55         TInt MdcaCount() const;

    56         TPtrC16 MdcaPoint(TInt aIndex) const;

    57 

    58     public:

    59         

    60         void SetObserver( MAudioFetcherListHandlerObserver* aObserver );

    61         static void Panic( TInt aReason );

    62         

    63     private:

    64         

    65         MAudioFetcherListHandlerObserver* iObserver;  // does not own

    66     };