application/inc/PodcastFeedView.h
author Sebastian Brannstrom <sebastianb@symbian.org>
Fri, 12 Nov 2010 20:48:14 +0000
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/*
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* Copyright (c) 2007-2010 Sebastian Brannstrom, Lars Persson, EmbedDev AB
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*
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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 the License "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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* EmbedDev AB - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#ifndef PODCASTFEEDVIEWH
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#define PODCASTFEEDVIEWH 
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#include "FeedEngine.h"
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#include "PodcastListView.h"
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#include "ImageHandler.h"
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class CPodcastFeedViewUpdater;
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enum TOpmlState {
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	EOpmlIdle,
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	EOpmlImporting,
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	EOpmlSearching
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};
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class CPodcastFeedView : public CPodcastListView, public MEikListBoxObserver, 
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	public MFeedEngineObserver, public MImageHandlerCallback
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    {
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    public: 
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        static CPodcastFeedView* NewL(CPodcastModel& aPodcastModel);
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        static CPodcastFeedView* NewLC(CPodcastModel& aPodcastModel);
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        ~CPodcastFeedView();
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        void UpdateItemL(TInt aIndex);
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        void UpdateItemsComplete();
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		void CheckResumeDownloadL();
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		void UpdateToolbar(TBool aVisible=ETrue);
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		TBool ViewingShows();
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 	   void CheckConfirmExit();
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 	   void ShowItem(TUint aUid);
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	protected:
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	    void ConstructL();
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		CPodcastFeedView(CPodcastModel& aPodcastModel);
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		/**
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		 * Returns views id, intended for overriding by sub classes.
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		 * @return id for this view.
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		 */
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		TUid Id() const;
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		/** 
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		 * Handles a view activation and passes the message of type 
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		 * @c aCustomMessageId. This function is intended for overriding by 
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		 * sub classes. This function is called by @c AknViewActivatedL().
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		 * @param aPrevViewId Specifies the view previously active.
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		 * @param aCustomMessageId Specifies the message type.
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		 * @param aCustomMessage The activation message.
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		 */
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		void DoActivateL(const TVwsViewId& aPrevViewId,
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	                                  TUid aCustomMessageId,
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	                                  const TDesC8& aCustomMessage);
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	    /** 
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		 * View deactivation function intended for overriding by sub classes. 
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		 * This function is called by @c AknViewDeactivated().
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		 */
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		void DoDeactivate();
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		// From // MEikListBoxObserverClass
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		void HandleListBoxEventL(CEikListBox* aListBox, TListBoxEvent aEventType);
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		void UpdateListboxItemsL();
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		// from MFeedEngineObserver
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		void FeedDownloadStartedL(TFeedState aState,TUint aFeedUid);		
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		void FeedDownloadFinishedL(TFeedState aState,TUint aFeeidUid, TInt aError);
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		void FeedUpdateAllCompleteL(TFeedState aState);
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		void OpmlParsingComplete(TInt aError, TUint aNumFeedsImported);
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		/** 
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		 * Command handling function intended for overriding by sub classes. 
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		 * Default implementation is empty.  
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		 * @param aCommand ID of the command to respond to. 
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		 */
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		void HandleCommandL(TInt aCommand);
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		void FeedInfoUpdatedL(TUint aFeedUid);
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		void UpdateFeedInfoDataL(CFeedInfo* aFeedInfo, TInt aIndex, TBool aIsUpdating = EFalse);
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		void UpdateFeedInfoStatusL(TUint aFeedUid, TBool aIsUpdating = EFalse);
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		// from MProgressDialogCallback
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		void DialogDismissedL(TInt aButtonId); 
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		// from MImageHandlerCallback
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		void ImageOperationCompleteL(TInt aError, TUint aHandle, CPodcastModel& aPodcastModel);
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		void HandleLongTapEventL( const TPoint& aPenEventLocation, const TPoint& aPenEventScreenLocation);
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	private:
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		void FormatFeedInfoListBoxItemL(CFeedInfo& aFeedInfo, TBool aIsUpdating = EFalse);
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		void HandleAddFeedL();
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		void HandleAddFeedUrlL();
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		void HandleAddFeedSearchL();
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		void HandleEditFeedL();
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		void HandleRemoveFeedL();
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		void HandleImportFeedsL();
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		void HandleExportFeedsL();
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		void HandleUpdateFeedL();
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		void GetFeedErrorText(TDes &aErrorMessage, TInt aErrorCode);
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		void OpmlParsingCompleteL(TInt aError, TUint aNumFeedsImported);
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		void LoadIcons();
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		void DisplayFeedInfoDialogL();
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	private:
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		CPodcastModel& iPodcastModel;		
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		TUint iFeedUpdating;
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		HBufC* iFeedsFormat;
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		HBufC* iNeverUpdated;
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		CPodcastFeedViewUpdater* iUpdater;
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		TBool iFirstActivateAfterLaunch;
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		TOpmlState iOpmlState;
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		TBool iViewingShows;
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		RArray<TInt> iFeedIdForIconArray;
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		TBool iListingFirstTime;
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};
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#endif // PODCASTFEEDVIEWH