--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videofeeds/vcnsuiengine/inc/vcxnsdownloadupdater.h	Mon Jan 18 20:21:12 2010 +0200
@@ -0,0 +1,184 @@
+/*
+* 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: 
+*
+*/
+
+
+
+
+#ifndef C_CVCXNSDOWNLOADUPDATER_H
+#define C_CVCXNSDOWNLOADUPDATER_H
+
+#include <e32std.h>
+#include <e32base.h>
+#include "CIptvUtil.h"
+
+class CPeriodic;
+class CVcxNsContent;
+
+/**
+ *  @lib vcxnsuiengine
+ *  @since S60 5.0
+ * 
+ *  Observer interface for the CVcxNsDownloadUpdater class,
+ *  receives notification if the object with given mpx id has 
+ *  changed, and needs to be refreshed.
+ */
+class MVcxNsDownloadUpdaterObserver
+    {
+    
+public:
+
+    /**
+     * Notify, that the object with given mpx id has 
+     * changed, and needs to be refreshed.
+     * @param aMpxId Mpx media id
+     */
+    virtual void UpdateVideoObject( TUint32 aMpxId ) = 0;
+    
+    /**
+     * Notifies that resume has started from beginning.
+     * @param aMpxId MPX Media Id of the video object.
+     */
+    virtual void ResumeStartedFromBeginningL( TUint32 aMpxId ) = 0;
+    };
+
+/**
+ *  @lib vcxnsuiengine
+ *  @since S60 5.0
+ */
+NONSHARABLE_CLASS( CVcxNsDownloadUpdater ) : public CBase
+    {
+
+private:
+
+    /**
+     * TDownloadItem
+     * Private inner class for storing polled downloads and their
+     * previous statuses and progresses.
+     */
+    class TDownloadItem
+        {
+
+    public:
+
+        /**
+         * Content object. Must not be deleted until the remove is called
+         */
+        CVcxNsContent* iContent;
+    
+        /**
+         * Old state, used for determine refresh need.
+         */
+        TUint32 iState;
+        
+        /**
+         * Old progress, used for determine refresh need.
+         */
+        TUint32 iProgress;
+
+        };
+
+public:
+
+    /**
+     * Two-phased constructor.
+     * @param aObserver Callback observer
+     */
+    static CVcxNsDownloadUpdater* NewL( MVcxNsDownloadUpdaterObserver* aObserver );
+    
+    /**
+     * Destructor.
+     */
+    virtual ~CVcxNsDownloadUpdater();
+
+    /**
+     * Adds download to the refresh list.
+     * @note Content object must not be deleted until remove is called
+     * @param aContent Content object
+     */
+    void AddDownload( CVcxNsContent* aContent );
+    
+    /**
+     * Removes download from the refresh list.
+     *
+     * @param aContent Content object
+     */
+    void RemoveDownload( CVcxNsContent* aContent );
+    
+    /**
+     * Removes all downloads from the refresh list.
+     */
+    void RemoveAllDownloads();
+    
+    /**
+    * Periodic's callback.
+    * @param aPtr Object pointer to be used with callback routine
+    */
+    static TInt Callback( TAny *aPtr );
+    
+    /**
+     * Update the downloads.
+     */
+    void UpdateDownloadsL();
+
+    /**
+     * Update given download if it's status has changed.
+     *  
+     * @param aDownload Download item
+     */
+    void UpdateDownloadL( TDownloadItem& aDownload );
+    
+private:
+
+    /**
+     * Constructor
+     * @param aObserver Callback observer
+     */
+    CVcxNsDownloadUpdater( MVcxNsDownloadUpdaterObserver* aObserver );
+
+    void ConstructL();
+    
+    /**
+     * Find the download from the downloads list.
+     * 
+     * @param IN  aContent Content, to which the searched content is compared.
+     * @param OUT aIndex index of found download in internal array.
+     * @return Is it found.
+     */
+    TBool FindDownload( CVcxNsContent* aContent , TInt* aIndex );
+
+private: // data
+
+    /**
+     * MVcxNsDownloadUpdaterObserver
+     */
+    MVcxNsDownloadUpdaterObserver* iObserver;
+
+    /**
+     * CPeriodic. 
+     * Own.
+     */
+    CPeriodic* iTimer;
+    
+    /**
+     * Array of polled downloads
+     * Own.
+     */
+    RArray<TDownloadItem> iDownloadArray;
+
+    };
+
+#endif // C_CVCXNSDOWNLOADUPDATER_H