/*

* Copyright (c) 2008 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:  Handles duplicate detection for music

*

*/

#ifndef __CMFMMPXDUPLICATEDETECTOR_H

#define __CMFMMPXDUPLICATEDETECTOR_H

#include <e32base.h>

#include <mpxcollectionobserver.h>

// Forward declarations

class MMPXCollectionUtility;

// Class declarations

/**

 * CCmFmMpxDuplicateDetector class

 * Part of Fill manager. CCmFmMpxDuplicateDetector manages

 * duplicate detection 

 *

 * @lib cmfillmanager.lib

 *

 * @since S60 5.1

 */

NONSHARABLE_CLASS( CCmFmMpxDuplicateDetector ) : public CBase,

                         public MMPXCollectionObserver,

                         public MMPXCollectionFindObserver

    {

public:    

    /**

     * Two-phased constructor.

     *

     * @since S60 5.1

     * @param aObserver, observer class

     * @return  pointer to CCmFmMpxDuplicateDetector class

     */

    static CCmFmMpxDuplicateDetector* NewL( 

        MCmFmItemHandlerObserver& aObserver );

    /**

     * Two-phased constructor.

     *

     * @since S60 5.1

     * @param aObserver, observer class  

     * @return  pointer to CCmFmMpxDuplicateDetector class

     */

    static CCmFmMpxDuplicateDetector* NewLC( 

        MCmFmItemHandlerObserver& aObserver );

    /**

     * Destructor.

     */

    virtual ~CCmFmMpxDuplicateDetector();

public:

    /**

     * Check if file is duplicate.

     *

     * @since S60 5.1

     * @param aItem, item to be checked

     * @return None

     */    

    void CheckMusicL( const CCmFillListItem& aItem );

   /**

     * Opens connection to collection plugin

     *

     * @since S60 5.1

     * @param None

     * @return None

     */

    void OpenCollectionPluginL();

   /**

     * Closes connection to collection plugin

     *

     * @since S60 5.1

     * @param None

     * @return None

     */ 

    void CloseCollectionPlugin();    

protected:

// From base class MMPXCollectionObserver

    /**

     * From MMPXCollectionObserver

     * See base class definition

     */

	 void HandleCollectionMediaL(const CMPXMedia& aMedia, TInt aError);

    /**

     * From MMPXCollectionObserver

     * See base class definition

     */

	void HandleCollectionMessage( CMPXMessage* aMsg, TInt aErr );

    /**

     * From MMPXCollectionObserver

     * See base class definition

     */

	void HandleOpenL( const CMPXMedia& aEntries,

	    TInt aIndex,TBool aComplete,TInt aError );

    /**

     * From MMPXCollectionObserver

     * See base class definition

     */

    void HandleOpenL(const CMPXCollectionPlaylist& aPlaylist,TInt aError);

// From base class MMPXCollectionFindObserver

	/**

     * From MMPXCollectionFindObserver

     * See base class definition

     */

	 void HandleFindAllL(const CMPXMedia& aResults, 

	    TBool aComplete, TInt aError);	

private:

    /**

     * Performs the first phase of two phase construction.

     */

    CCmFmMpxDuplicateDetector( MCmFmItemHandlerObserver& aObserver );

    /**

     * Performs the second phase construction.

     */

    void ConstructL( );

private: // data

    /**

     * Observer class

     */

    MCmFmItemHandlerObserver& iObserver;

    /**

     * Collection utility of MPX framework

     */

    MMPXCollectionUtility* iCollectionUtility;          // owned

    /**

     * Duplicate or not

     */

    TBool iDuplicate;

    };

#endif //  __CMFMMPXDUPLICATEDETECTOR_H