--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmappcomponents/collectionhelper/inc/mpxdeletehelper.h	Thu Dec 17 08:55:47 2009 +0200
@@ -0,0 +1,220 @@
+/*
+* Copyright (c) 2006 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:  Delete helper
+*
+*/
+
+
+#ifndef C_MPX_DELETE_HELPER_H
+#define C_MPX_DELETE_HELPER_H
+
+#include <e32base.h>
+#include <badesca.h>
+#include <thumbnailmanager.h>
+#include <thumbnailmanagerobserver.h>
+#include <mpxcollectionobserver.h>
+#include <mpxharvesterutilityobserver.h>
+#include <mpxmessage2.h>
+#include <usbman.h>
+
+// FORWARD DECLARATIONS
+class MMPXCollectionUtility;
+class MMPXPlaybackUtility;
+class MMPXHarvesterUtility;
+class MMPXCHelperObserver;
+class CMPXCollectionPath;
+
+
+/**
+ *  Delete Helper
+ *
+ *  @lib mpxcollectionhelper.lib
+ *  @since S60 3.0
+ */
+NONSHARABLE_CLASS( CMPXDeleteHelper ) : public CActive,
+                            public MThumbnailManagerObserver
+    {
+public:
+
+    /**
+    * Two-Phased Constructor
+    * @param aCollectionUtility reference to a collection utility
+    * @param aHarvesterUtility reference to a harvester utility
+    * @param aObserver observer to callback upon completion of the operation
+    * @return new instance of CMPXDeleteHelper
+    */
+    static CMPXDeleteHelper* NewL(MMPXCollectionUtility& aCollectionUtility,
+                                  MMPXHarvesterUtility& aHarvesterUtility,
+                                  MMPXCHelperObserver& aObserver);
+
+    /**
+    * Virtual Destructor
+    */
+    virtual ~CMPXDeleteHelper();
+
+public: // New functions
+
+    /**
+    * Delete all items in a collection path
+    * @param aPath, collection path to delete
+    */
+    void DeleteL( CMPXCollectionPath& aPath );
+
+    /**
+    * Handles any collection message callbacks from collection helper
+    */
+    void HandleCollectionMessage(CMPXMessage* aMessage, TInt aErr);
+
+    /**
+     * Stop deleting
+     * 
+     */
+    void Stop();
+    
+private:
+
+    /**
+    *  From CActive
+    *  Handles an active object's request completion event
+    */
+    void RunL();
+
+    /**
+    * From CActive
+    * Implements cancellation of an outstanding request.
+    */
+    void DoCancel();
+
+    /**
+    * Performs incremental delete operation
+    */
+    void DoTaskStep();
+
+    /**
+    * Performs incremental delete operation
+    */
+    void DoTaskStepL();
+
+    /**
+    * Completes delete operation request and notifies the client
+    */
+    void CompleteDelete( TInt aErr );
+
+    /**
+    * Finish the delete operation
+    * @param aErr error
+    */
+    void DoCompleteDeleteL( TInt aErr );
+
+    /**
+    * Resets members to get ready for the next client request
+    */
+    void Reset();
+
+    /**
+    * Retrieves a list of file URIs associated with the path
+    */
+    void RetrieveFileListL();
+
+    /**
+     * Perfoms cleanup of all unused data before delete
+     */
+     void StartDeleteL();
+    
+    /**
+    * Deletes one file from the file system then removes it from the
+    * collection
+    */
+    void DeleteL();
+
+    /**
+    * Deletes the file from the file system and harvester's database
+    * @return ETrue if the file has been deleted from the file system;
+    *         otherwise EFalse.
+    */
+    TBool DeleteFileL();
+	
+    /**
+     * Connect to usbman.
+     */
+    void ConnectUsbMan();
+
+    // MThumbnailManagerObserver for getting thumbnails
+    void ThumbnailPreviewReady(
+        MThumbnailData& aThumbnail, TThumbnailRequestId aId );
+        
+    void ThumbnailReady(
+        TInt aError, 
+        MThumbnailData& aThumbnail, TThumbnailRequestId aId );
+    
+private:
+
+    /**
+    * Constructor
+    * @param aCollectionUtility reference to a collection utility
+    * @param aHarvesterUtility reference to a harvester utility
+    * @param aObserver observer to callback upon completion of the operation
+    */
+    CMPXDeleteHelper(MMPXCollectionUtility& aCollectionUtility,
+                     MMPXHarvesterUtility& aHarvesterUtility,
+                     MMPXCHelperObserver& aObserver);
+
+    /**
+    * 2nd phase constructor
+    */
+    void ConstructL();
+
+ private:
+
+    /*
+    * state for deleting one item
+    */
+    enum TMPXDeleteState
+        {
+        EMPXIdle,
+        EMPXInitDelete,
+        EMPXPreparation,
+        EMPXDelete
+        };
+
+private: // data
+    MMPXCollectionUtility&    iCollectionUtil;
+    MMPXHarvesterUtility&     iHarvester;
+    MMPXCHelperObserver&      iObserver;
+
+    MMPXPlaybackUtility*      iPbUtil;
+
+    CMPXCollectionPath*       iDeletePath;
+    CDesCArray*               iFiles;
+
+    TBool                     iMoreToDo;
+    TBool                     iHadInUse;
+    TBool                     iCancelled;
+
+    TMPXDeleteState           iState;
+
+    CMPXMessageArray*         iMessageArray;
+    TInt                      iItemsCount;
+    TInt                      iRetrievedItemsCount;
+    TInt                      iDeletePercent;
+    TInt                      iDeleteIncFactor;
+    TInt                      iDeleteCount;
+    RFs                       iFs;           // FsSession (owned)
+    CThumbnailManager*        iTNManager;
+    RUsb                      iUsbMan;
+    TBool                     iUsbManConnected;
+
+    };
+
+#endif // C_MPX_DELETE_HELPER_H