mpxplugins/viewplugins/views/addtracksdialog/inc/mpxaddtrackslistmodel.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:45:05 +0200
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  A list model for add tracks dialog
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*
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*/
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#ifndef C_CMPXADDTRACKSLISTMODEL_H
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#define C_CMPXADDTRACKSLISTMODEL_H
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// INCLUDES
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#include <mpxcollectionpath.h>  // TMPXItemId
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// CLASS DECLARATION
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class MDesCArray;
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class CMPXMedia;
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class CMPXMediaArray;
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/**
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*  List model for add tracks dialog.
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*  Keep track of list item .
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*/
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NONSHARABLE_CLASS( CMPXAddTracksListModel ) : public CBase
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    {
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public:  // Constructors and destructor
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    /**
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     * Two-phased constructor.
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     * @return A pointer to a newly created object
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     */
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    static CMPXAddTracksListModel* NewL();
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    /**
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     * Destructor.
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     */
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    virtual ~CMPXAddTracksListModel();
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public: // New functions
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    /**
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     * Reset tracks list.
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     */
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    void ResetTracksList();
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    /**
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     * Return track name.
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     * @param aIndex Track's index.
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     * @return Track name.
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     */
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    const TDesC& TrackName( TInt aIndex ) const;
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    /**
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     * Return track type.
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     * @param aIndex Track's index.
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     * @return Track type.
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     */
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    TInt TrackTypeL( TInt aIndex ) const;
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    /**
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     * Return track Category.
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     * @param aIndex Track's index.
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     * @return Track category.
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     */
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    TInt TrackCategoryL( TInt aIndex ) const;
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    /**
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     * Return track id.
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     * @param aIndex Track's index.
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     * @return Track id.
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     */
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    TMPXItemId TrackIdL( TInt aIndex ) const;
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    /**
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     * Return media at a given index
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     *
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     * @param aIndex index to get
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     */
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    const CMPXMedia& MediaL( TInt aIndex ) const;
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    /**
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     * Return number of tracks stored in the list.
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     * @return Number of tracks stored in the list.
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     */
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    TInt TracksListCount() const;
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    /**
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     * Insert groups at aPos of the tracks list.
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     * @param aMedia media array containing the track info.
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     * @param aPos Index for the groups to be added to. Ignore this field
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     *             if groups are appended to the end of the list.
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     * @param aCategory category of the group could be either EMPXSong or EMPXArtist
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     */
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    void InsertGroupsL( CMPXMediaArray& aMedia, TInt aPos = -1 , TInt aCategory = EMPXArtist);
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    /**
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     * Insert tracks under the current group.
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     * @param aTrack track with song ids.
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     * @param aIndex Index to insert.
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     */
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    void InsertTrackL( CMPXMedia& aTrack, TInt aIndex );
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    /**
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     * Insert tracks under the current group. Update the expanded array too.
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     * @param aTracks List of tracks with song ids.
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     * @param aIndex Index of the group.
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     */
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    void InsertTracksUnderGroupL(
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        CMPXMediaArray& aTracks,
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        TInt aIndex );
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    /**
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     * Remove all tracks under group.
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     * @param aIndex Index of the group which tracks will be removed.
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     * @return Number of tracks removed.
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     */
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    TInt RemoveAllTracksFromGroupL( TInt aIndex );
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    /**
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     * Remove tracks .
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     * @param aIndex Index of the track which will be removed.
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     */
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    void RemoveTracks( TInt aIndex );
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    /**
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     * Return expanded groups count.
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     * @return Expanded groups count.
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     */
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    TInt ExpandedGroupsCount() const;
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    /**
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     * Check if the index is expanded or not.
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     * @param aIndex Listbox index.
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     * @return ETrue if aIndex is expanded. Otherwise, EFalse.
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     */
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    TBool IsExpandedIndex( TInt aIndex ) const;
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    /**
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     * Mark the current index as expanded.
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     * @param aIndex Index to be marked as expanded.
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     * @param aCount Number of tracks added.
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     */
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    void MarkExpandedL( TInt aIndex, TInt aCount );
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    /**
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     * Clear the current index as collapsed.
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     * @param aIndex Index to be removed from the expanded array.
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     * @param aCount Number of tracks removed.
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     */
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    void UnMarkExpanded( TInt aIndex, TInt aCount );
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    /**
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     * Return the oldest expanded group index.
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     * @return The oldest expanded group index.
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     */
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    TInt OldestExpandedGroupIndex();
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    /**
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     * Return the closest expanded group index.
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     * @param aIndex Current index
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     * @return Closest expanded group index if found. Otherwise, KErrNotFound.
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     */
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    TInt ClosestExpandedGroupIdx( TInt aIndex );
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    /**
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     * Return animation icon index for highlight item.
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     * @param aIndex current highlight index number.
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     * @return highlight item's aniamtion icon's index, KErrNotFound.
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     */
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    TInt AnimationIconNum( TInt aIndex );
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    /**
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     * Set animation icon index number.
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     * @param aIndex current highlight index number
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     * @param aAnimIconNum current animation icon index
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     */
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    void SetAnimationIconNum( TInt aIndex, TInt aAnimIconNum );
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    /**
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     * There are mathed songs, it means Songs(All) node is shown.
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     * @return ETrue if there are matched songs,
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     *         EFalse if there is not.
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     */
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    TBool FindSongs();
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    /**
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     * Set flag to indicate if there are mathed songs.
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     * @param aFindSongs if there are songs matched
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     */
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    void SetFindSongsFlag( TBool aFindSongs );
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    /**
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     * determines if the current item is on removable drive
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     *
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     * @param aIndex current highlight index number
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     * @return ETrue if on removable drive, EFalse otherwise
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     */
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    TBool IsOnRemovableDrive( TInt aIndex );
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private: // Constructors
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    /**
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     * C++ default constructor.
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     */
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    CMPXAddTracksListModel();
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    /**
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     * By default Symbian 2nd phase constructor is private.
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     */
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    void ConstructL();
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private:    // Data
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    CMPXMediaArray*                     iTracksList;
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    RArray<TInt>                        iExpandedIndices;
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    TInt                                iCurrentHighlightIndex; // Current highlite item
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    TInt                                iAnimIconNum;           // animation icon number
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    TBool                               iFindSongs;             // Find songs flag
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    TInt iMMCDrive;
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    };
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#endif  // C_CMPXADDTRACKSLISTMODEL_H
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// End of File