--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videocollection/hgmyvideos/inc/vcxhgmyvideosdownloadupdater.h	Mon Jan 18 20:21:12 2010 +0200
@@ -0,0 +1,213 @@
+/*
+* 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 the License "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:      Class for following and updating download progress.*
+*/
+
+
+
+
+#ifndef VCXHGMYVIDEOSDOWNLOADUPDATER_H
+#define VCXHGMYVIDEOSDOWNLOADUPDATER_H
+
+// INCLUDE FILES
+#include <e32std.h>
+#include <e32base.h>
+#include "CIptvUtil.h"
+#include <mpxcollectionmessagedefs.h>
+
+class CVcxHgMyVideosVideoModelHandler;
+class CPeriodic;
+class CMPXMedia;
+class CMPXMediaArray;
+class CVcxHgMyVideosVideoList;
+
+/**
+ * Follows and updates download progress.
+ * 
+ * @lib vcxhgmyvideos.lib 
+ */
+NONSHARABLE_CLASS( CVcxHgMyVideosDownloadUpdater ) : public CBase
+    {
+    protected:
+
+        /**
+         * TDownloadItem
+         * Private inner class for storing polled downloads and their
+         * previous statuses and progresses.
+         */
+        class TDownloadItem
+            {
+            public:
+
+                /**
+                 * Mpx media object. 
+                 * Not own.
+                 */
+                CMPXMedia* iMedia;
+
+                /**
+                 * Old state, used for determine refresh need.
+                 */
+                TVcxMyVideosDownloadState iState;
+
+                /**
+                 * Old progress, used for determine refresh need.
+                 */
+                TUint32 iProgress;
+
+                /**
+                 * Flag for marking that progressive play possibility has been queried.
+                 * Status is followed only for items where query has been made before. 
+                 */
+                TBool iProgressivePlayQueried;
+                
+                /**
+                 * Previous response to CViaPlayerFileDetails::IsPlayPossible(). 
+                 */
+                TBool iIsPlayPossible;
+            };
+
+    public:
+    
+        /**
+         * Two-phased constructor.
+         * 
+         * @param aParent Parent class.
+         * @param aVideoArray Reference to video array.
+         */
+        static CVcxHgMyVideosDownloadUpdater* NewL(
+            CVcxHgMyVideosVideoModelHandler& aParent,
+            CVcxHgMyVideosVideoList& aVideoArray );
+
+        /**
+         * Destructor.
+         */
+        virtual ~CVcxHgMyVideosDownloadUpdater();
+    
+        /**
+         * Sets video download updater to pause or normal mode.
+         * 
+         * @param aPaused If ETrue, updater is paused.
+         */
+        void SetPausedL( TBool aPaused );
+
+        /**
+         * Removes the download from download array.
+         *
+         * @param aMpxItemId MPX item ID of media object.
+         */
+        void RemoveDownload( TMPXItemId aMpxItemId );
+        
+        /**
+         * Finds the download from download array.
+         * 
+         * @param aMedia MPX media object.
+         * @return Index of array or KErrNotFound.
+         */
+        TInt FindDownload( CMPXMedia* aMedia );
+        
+        /**
+         * Called to inform that array of videos has changed. Causes download
+         * data being re-setted to make sure correct downloads are followed.  
+         */
+        void VideoArrayChangedL();         
+        
+        /**
+         * Checks video data modifications and updates download array.
+         * 
+         * @param aEventType Event type, only expects EMPXItemModified.
+         * @param aMpxItemId MPX item ID of modified video.
+         * @param aExtraInfo Extra information for modification event.
+         */
+        void VideoModifiedL( TMPXChangeEventType aEventType,
+                             TMPXItemId aMpxItemId,
+                             TInt32 aExtraInfo );
+        
+        /**
+         * Checks if progressive play (playback during download) is possible
+         * for given video clip.
+         * 
+         * @param aIndex Video index on video array.
+         * @return ETrue if progressive play is possible.
+         */
+        TBool IsPlayPossible( TInt aIndex );
+
+        /**
+        * Periodic's callback.
+        */
+        static TInt Callback( TAny *aPtr );
+
+    protected:
+
+        CVcxHgMyVideosDownloadUpdater( 
+            CVcxHgMyVideosVideoModelHandler& aParent,
+            CVcxHgMyVideosVideoList& aVideoArray );                
+
+        void ConstructL();
+
+        /**
+         * Makes sure that timer that is following download is running, and runs
+         * only when it is needed.
+         */
+        void ContinueToFollowDownloads();        
+        
+        /**
+         * Resets the list of downloads to follow based on new video array.
+         */
+        void ResetDownloadsToFollowL();
+
+        /**
+         * Update the downloads.
+         */
+        void UpdateDownloadsL();
+
+        /**
+         * Update given download if it's status has changed.
+         * 
+         * @param aItem Download item.
+         */
+        void UpdateDownloadL( TDownloadItem& aItem );        
+
+    protected: // data
+
+        /**
+         * Parent class.
+         */
+        CVcxHgMyVideosVideoModelHandler& iParent;
+        
+        /**
+         * CPeriodic. 
+         * Own.
+         */
+        CPeriodic* iTimer;
+
+        /**
+         * Reference to array of videos.
+         * Not own.
+         */
+        CVcxHgMyVideosVideoList& iVideoArray;
+
+        /**
+         * Flag for pause state of download progress follower.
+         */
+        TBool iPaused;
+
+        /**
+         * Array of polled downloads.
+         * Own.
+         */
+        RArray<TDownloadItem> iDownloadArray;
+    };
+
+#endif // VCXHGMYVIDEOSDOWNLOADUPDATER_H