diff -r 453dfc402455 -r 0aa8cc770c8a mtpdataproviders/mtpplaybackcontroldp/mtpplaybackmpximplementation/inc/cmtpplaybackplaylisthelper.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mtpdataproviders/mtpplaybackcontroldp/mtpplaybackmpximplementation/inc/cmtpplaybackplaylisthelper.h	Tue Aug 31 16:03:15 2010 +0300
@@ -0,0 +1,228 @@
+// Copyright (c) 2010 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:
+//
+
+/**
+ @file
+ @internalComponent
+*/
+
+#ifndef CMTPPLAYBACKPLAYLISTHELPER_H_
+#define CMTPPLAYBACKPLAYLISTHELPER_H_
+
+#include <mpxcollectionobserver.h>
+#include <mpxcollectionuihelperobserver.h>
+
+#include "mtpdebug.h"
+#include "cmtpplaybackparam.h"
+
+class MMPXCollectionUiHelper;
+class MMPXCollectionHelper;
+class MMPXCollectionUtility;
+
+class TMTPPbDataSuid;
+class CMTPPlaybackControlImpl;
+
+NONSHARABLE_CLASS( CMTPPlaybackPlaylistHelper ) : public CBase,
+                                                  public MMPXCollectionObserver
+    {
+public: // Constructors and destructor
+
+    /**
+     * Two-phased constructor.
+     */
+    static CMTPPlaybackPlaylistHelper* NewL( CMTPPlaybackControlImpl& aControlImpl );
+
+    /**
+     * Destructor.
+     */
+    virtual ~CMTPPlaybackPlaylistHelper();
+    
+public:
+    
+    /**
+     * Get playlist from collection server
+     * @param aPlayObject, refer to TMTPPbDataSuid
+     */
+    void GetPlayListFromCollectionL( const TMTPPbDataSuid& aPlayObject );
+    
+    /**
+     * Get playlist from collection server
+     * @param aIndex, song index
+     */
+    void GetPlayListFromCollectionL( TInt aIndex );
+    
+    /**
+     * Get suid from collection server
+     * @param aPlaylist, current collection playlist
+     */
+    TMTPPbDataSuid GetMTPPBSuidFromCollectionL( 
+            const CMPXCollectionPlaylist& aPlaylist );
+    
+    /**
+     * Get category
+     */
+    TMTPPbCategory MTPPbCategory() const;
+    
+    /**
+     * Get suid
+     */
+    TFileName MTPPbSuid() const;
+    
+private:
+    
+    //from base class MMPXCollectionObserver  
+    /** 
+     *  Handle collection message
+     * 
+     *  @param aMsg collection message, ownership not transferred. 
+     *         Please check aMsg is not NULL before using it. 
+     *         If aErr is not KErrNone, plugin might still call back with more
+     *         info in the aMsg.
+     *  @param aErr system error code.
+     */
+    void HandleCollectionMessage( CMPXMessage* aMsg, TInt aErr );
+    
+    /**
+     *  Handles the collection entries being opened. Typically called
+     *  when client has Open()'d a folder.
+     *
+     *  @param aEntries collection entries opened
+     *  @param aIndex focused entry
+     *  @param aComplete ETrue no more entries. EFalse more entries
+     *                   expected
+     *  @param aError error code   
+     */
+    void HandleOpenL( const CMPXMedia& aEntries, TInt aIndex, TBool aComplete,
+              TInt aError );
+    
+    /**
+     *  Handles the item being opened. Typically called
+     *  when client has Open()'d an item. Client typically responds by
+     *  'playing' the item via the playlist.
+     *
+     *  @param aPlaylist collection playlist
+     *  @param aError error code
+     */
+    void HandleOpenL( const CMPXCollectionPlaylist& aPlaylist, TInt aError );
+    
+    /**
+     * From MMPXCollectionMediaObserver 
+     * It handles MediaL event.
+     *
+     * @param aMedia object containing collection's informations
+     * @param aError error code
+     */
+    void HandleCollectionMediaL( const CMPXMedia& aMedia, TInt aError );
+
+private:
+    
+    /**
+     * C++ default constructor.
+     */
+    CMTPPlaybackPlaylistHelper( CMTPPlaybackControlImpl& aControlImpl );
+    
+    /**
+     * By default Symbian 2nd phase constructor is private.
+     */
+    void ConstructL();
+    
+private:
+    
+    /**
+     * Handle collection message
+     */
+    void DoHandleCollectionMessageL( const CMPXMessage& aMsg );
+    
+    /**
+     * Handle OpenL
+     */
+    void DoHandleOpenL( const CMPXMedia& aEntries );
+    
+    /**
+     * Open the root path of playlist
+     */
+    void OpenMusicPlayListPathL();
+    
+    /**
+     * Open the root path of album
+     */
+    void OpenMusicAblumPathL();
+    
+    /**
+     * Reset play source
+     */
+    void ResetPlaySource();
+    
+    /**
+    *Update path index according to iPlayObject
+    */
+    void UpdatePlaylistPathIndexL( const CMPXMedia& aEntries );
+    
+    /**
+    *Got the collectionHelperL
+    */
+    MMPXCollectionHelper* CollectionHelperL();
+    
+    /**
+     * Map uri to ItemId
+     */
+    const TMPXItemId UriToItemIdL();
+    
+    /**
+     * Map uri to ItemId
+     */
+    const TFileName ItemIdToUriL( const TMPXItemId& aId );
+    
+    /**
+     * Find Album Songs
+     */
+    CMPXMedia* FindAlbumSongsL( const TMPXItemId& aAlbumId );
+    
+    /*
+     * UpdatePathAndOpenL
+     */
+    void UpdateAlbumPathAndOpenL();
+    
+    /*
+     * UpdatePathAndOpenL
+     */
+    void UpdatePathAndOpenL();
+    
+    /**
+     *  Return instance of CMTPPlaybackControlImpl.
+     *
+     */
+    CMTPPlaybackControlImpl& MTPPlaybackControlImpl();
+    
+private:
+    
+    MMPXCollectionUiHelper*              iCollectionUiHelper;//Owned
+    MMPXCollectionHelper*                iCollectionHelper;//Owned
+    MMPXCollectionUtility*               iCollectionUtil;//Owned
+    HBufC*                               iPlayObject;  //Owned
+    
+    CMTPPlaybackControlImpl&             iMTPPlaybackControl;// Not owned
+    
+    TMTPPbCategory                       iPlayCategory;
+    TInt                                 iSongIndex;
+    TInt                                 iPathIndex;
+
+    /**
+    FLOGGER debug trace member variable.
+     */
+    __FLOG_DECLARATION_MEMBER;
+    };
+
+#endif /* CMTPPLAYBACKPLAYLISTHELPER_H_ */