1 /*

     2 * Copyright (c) 2008-2009 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:    Class that resolves the active media list

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef __M_GLXACTIVEMEDIALISTRESOLVER_H__

    22 #define __M_GLXACTIVEMEDIALISTRESOLVER_H__

    23 

    24 #include <e32std.h>

    25 

    26 class MGlxActiveMediaListChangeObserver;

    27 class MGlxMediaList;

    28 

    29 /**

    30  * Interface that allows client to resolve the currently active 

    31  * media list.

    32  */

    33 class MGlxActiveMediaListResolver 

    34     { 

    35 public:

    36     /**

    37      * InstanceL

    38      * Call Close to close the instance

    39      * @param aObserver Observer to add or NULL

    40      * @return an reference counter instance of the object

    41      */

    42     IMPORT_C static MGlxActiveMediaListResolver* InstanceL(

    43         MGlxActiveMediaListChangeObserver* aObserver);

    44     

    45     /**

    46      * Close reference count and remove observer

    47      * @param aObserver Observer to remove

    48      */ 

    49     virtual void Close(MGlxActiveMediaListChangeObserver* aObserver) = 0;

    50     

    51     /**

    52      * Returns the pointer to the currently active media list

    53      * The active media list is the list in the currently open view that 

    54      * the user is navigating, or NULL if that media list is not known

    55      * @return active media list, or NULL

    56      */ 

    57     virtual MGlxMediaList* ActiveMediaList() const = 0;

    58     };

    59     

    60 #endif // __M_GLXACTIVEMEDIALISTRESOLVER_H__