/*

* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:    Class that resolves the active media list

*

*/

#ifndef __M_GLXACTIVEMEDIALISTRESOLVER_H__

#define __M_GLXACTIVEMEDIALISTRESOLVER_H__

#include <e32std.h>

class MGlxActiveMediaListChangeObserver;

class MGlxMediaList;

/**

 * Interface that allows client to resolve the currently active 

 * media list.

 */

class MGlxActiveMediaListResolver 

    { 

public:

    /**

     * InstanceL

     * Call Close to close the instance

     * @param aObserver Observer to add or NULL

     * @return an reference counter instance of the object

     */

    IMPORT_C static MGlxActiveMediaListResolver* InstanceL(

        MGlxActiveMediaListChangeObserver* aObserver);

    /**

     * Close reference count and remove observer

     * @param aObserver Observer to remove

     */ 

    virtual void Close(MGlxActiveMediaListChangeObserver* aObserver) = 0;

    /**

     * Returns the pointer to the currently active media list

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

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

     * @return active media list, or NULL

     */ 

    virtual MGlxMediaList* ActiveMediaList() const = 0;

    };

#endif // __M_GLXACTIVEMEDIALISTRESOLVER_H__