/*

* 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:    SortOrder command handler

*

*/

#ifndef C_GLXCOMMANDHANDLERSORTORDER_H

#define C_GLXCOMMANDHANDLERSORTORDER_H

// INCLUDES

#include <e32base.h>

#include <glxmedialistcommandhandler.h>

#include <glxfilterfactory.h>		// For TGlxFilterFactory

//FORWARD DECLARATION

class MGlxMediaListProvider;

/**

 * @class CGlxCommandHandlerSortOrder

 *

 * Command handler that changes the sorting criteria of the MediaList

 *

 */

NONSHARABLE_CLASS (CGlxCommandHandlerSortOrder)

    : public CGlxMediaListCommandHandler

	{

	    friend class ut_cglxcommandhandlersortorder;

public:

    /**

     * Two-phase constructor

     * @param aMediaListProvider object that provides the media list

     * @param aCRKey The settings key which used by the commandhandler 

     *								set/get the sort order setting

     */

	IMPORT_C static CGlxCommandHandlerSortOrder* NewL(

							MGlxMediaListProvider* aMediaListProvider,

							const TUint32 aCRKey);

	/** Destructor */

	IMPORT_C ~CGlxCommandHandlerSortOrder();

protected:

	/** see CGlxMediaListCommandHandler::DoExcecuteL */

    TBool DoExecuteL(TInt aCommandId, MGlxMediaList& aList);

    /** see CGlxMediaListCommandHandler::DoIsDisabled */

    TBool DoIsDisabled(TInt aCommandId, MGlxMediaList& aList) const;

private:

    /** Second phase constructor */

	void ConstructL();

    /** 

     * Constructor 

     * @param aMediaListProvider object that provides the media list

     * @param aCRKey The settings key which used by the commandhandler 

     *								set/get the sort order setting

     */

	CGlxCommandHandlerSortOrder(MGlxMediaListProvider* aMediaListProvider,

												const TUint32 aCRKey);

    /**

     *  Finds out the current sort order applied to the media list

     *  @param aList reference to a media list

     *  @returns The current sort order					

     */

    TGlxFilterSortOrder	CurrentSortOrder(MGlxMediaList& aList) const;

private: // Data

	/** Holds the id of the cenrep key which needs to be queried/changed */

	TUint32	iKey;

	};

#endif // C_GLXCOMMANDHANDLERSORTORDER_H