browserui/browser/FavouritesSrc/BrowserFaviconHandler.cpp
author Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
Mon, 30 Mar 2009 12:49:49 +0300
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/*
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* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).
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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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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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*      Implementation of CBrowserFaviconHandler
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*
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*
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*/
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// INCLUDES
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#include "BrowserFaviconHandler.h"
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#include "ApiProvider.h"
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#include "BrowserUtil.h"
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#include <e32base.h>
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#include <BrCtlDefs.h>
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#include <fbs.h>
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#include <MdaImageConverter.h>
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#include <FavouritesItemList.h>
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#include <FavouritesItem.h>
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// number of favicons to get before redrawing
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const TInt KNumFaviconsToRedraw = 3	;
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::CBrowserFaviconHandler()
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// ----------------------------------------------------------------------------
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//
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CBrowserFaviconHandler::CBrowserFaviconHandler( 
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										MApiProvider& aApiProvider,
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										MBrowserFaviconObserver& aObserver,
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										TSize aFaviconSize ) :
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	CActive( CActive::EPriorityIdle ),
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	iApiProvider( aApiProvider ),
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	iObserver( aObserver ),
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	iFaviconSize( aFaviconSize )
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	{
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	CActiveScheduler::Add( this );	
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	}
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::~CBrowserFaviconHandler()
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// ----------------------------------------------------------------------------
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//
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CBrowserFaviconHandler::~CBrowserFaviconHandler()
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	{
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	Cancel();
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	if(iBmpScaler!=NULL)
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		{
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			iBmpScaler->Cancel();
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		}
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	delete iBmpScaler;
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	delete iFaviconArrayIndices;
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	delete iFavicon;
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	}
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::NewL()
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// ----------------------------------------------------------------------------
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//	
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CBrowserFaviconHandler* CBrowserFaviconHandler::NewL( 
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										MApiProvider& aApiProvider,
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										CArrayPtr<CGulIcon>* aIconArray,
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										MBrowserFaviconObserver& aObserver,
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										TSize aFaviconSize )
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	{
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	CBrowserFaviconHandler* self = 
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					CBrowserFaviconHandler::NewLC( 	aApiProvider, 
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													aIconArray, 
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													aObserver,
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													aFaviconSize );
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    CleanupStack::Pop();
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    return self;	
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	}
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::NewLC()
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// ----------------------------------------------------------------------------
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//	
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CBrowserFaviconHandler* CBrowserFaviconHandler::NewLC(
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										MApiProvider& aApiProvider,
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										CArrayPtr<CGulIcon>* aIconArray,
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										MBrowserFaviconObserver& aObserver,
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										TSize aFaviconSize )
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	{
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	CBrowserFaviconHandler* self = 
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					new ( ELeave ) CBrowserFaviconHandler( 	aApiProvider,
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															aObserver,
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															aFaviconSize );
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	CleanupStack::PushL( self );
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    self->ConstructL( aIconArray );
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    return self;	
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	}
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::ConstructL()
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// ----------------------------------------------------------------------------
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//		
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void CBrowserFaviconHandler::ConstructL( CArrayPtr<CGulIcon>* aIconArray )
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	{
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	iIconArray = aIconArray; // not owned
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	iFaviconArrayIndices = new ( ELeave ) CArrayFixFlat<TFaviconIndex>( 4 );
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   118
		
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	// Construct Favicon Engine
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	iBmpScaler = CBrowserFaviconScaler::NewL(*this);
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	}
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   122
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::StartGetFaviconsL()
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// ----------------------------------------------------------------------------
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//		
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void CBrowserFaviconHandler::StartGetFaviconsL( CFavouritesItemList* aFavItems )
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	{
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	Cancel();
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	iBmpScaler->Cancel();
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   131
		
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	if ( aFavItems->Count() )
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		{
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		// New request for favicons: 
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		iFavItems = aFavItems;
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   136
		
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	    // Initialisation.
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		iFavItemsCurrentIndex = 0;      // will be incremented before favicon getting
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        iFaviconsFound = 0;             // keeps track of favicons found
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		iFaviconArrayIndices->Reset();  // refresh the array mapping uid's to favicons
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   141
		
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		// Initiate the getting of favicons	
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		GetFaviconL();
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		}
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	}
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   146
	
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::GetFaviconL()
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// ----------------------------------------------------------------------------
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//		
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void CBrowserFaviconHandler::GetFaviconL()
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	{	
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	// The whole list has already been checked - we're finished
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	if ( iFavItemsCurrentIndex >= iFavItems->Count() )
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		{
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		iObserver.DrawFavicons();
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		}
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   158
	else
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   159
	    {
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	    // Step through the item array until we find a favicon, or reach the end
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		do
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			{
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			iWasLastItemFavicon = EFalse;
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parents:
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   164
			
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			CFavouritesItem& item = *iFavItems->At( iFavItemsCurrentIndex );
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			HBufC* url = HBufC::NewLC( item.Url().Length() );
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			url->Des().Copy( item.Url() );
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parents:
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   168
			
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   169
			if ( iFavicon )
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   170
				{
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   171
				// Make sure ongoing scaling is cancelled (if any)
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				Cancel();
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				iBmpScaler->Cancel();
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parents:
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   174
				
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   175
				delete iFavicon;
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				iFavicon = NULL;
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   177
				}
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parents:
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   178
						
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   179
			// Get Favicon from Engine
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   180
			if ( item.Url().Length() )
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   181
				{
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   182
				iFavicon = iApiProvider.BrCtlInterface().GetBitmapData( 
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   183
										*url, TBrCtlDefs::EBitmapFavicon );
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   184
				}
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   185
            CleanupStack::PopAndDestroy();//url
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   186
			// Asynchronously scales the favicon and stores it in an array
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   187
			if ( iFavicon )
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   188
				{
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   189
				iWasLastItemFavicon = ETrue;	
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   190
				RescaleFaviconL();
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   191
				iFaviconsFound++;
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   192
				__ASSERT_DEBUG( !( iFavItemsCurrentIndex > iFavItems->Count() ),
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   193
								Util::Panic( Util::EOutOfRange ) );
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   194
				break;
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   195
				}
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   196
			} while ( ++iFavItemsCurrentIndex < iFavItems->Count() );
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   197
		}
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parents:
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   198
		
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   199
		// If we exited the 'do' and the last item wasn't a favicon
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   200
		// it means we're finished
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   201
		if ( !iWasLastItemFavicon &&  ( iFaviconsFound %  KNumFaviconsToRedraw ) )
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   202
			{
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   203
			iObserver.DrawFavicons();
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   204
			}
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   205
	}
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parents:
diff changeset
   206
	
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// ----------------------------------------------------------------------------
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   208
// CBrowserFaviconHandler::RescaleFaviconL()
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   209
// ----------------------------------------------------------------------------
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   210
//
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   211
void CBrowserFaviconHandler::RescaleFaviconL()
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   212
	{
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   213
	iHasMask = (iFavicon->Mask() != NULL);
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   214
	if (iHasMask)
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   215
		{
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   216
		iBmpScaler->StartScalingL( *iFavicon->Mask(), iFaviconSize, ETrue );
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   217
		}
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   218
	else
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parents:
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   219
		{
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   220
		iBmpScaler->StartScalingL( *iFavicon->Bitmap(), iFaviconSize, EFalse );
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parents:
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   221
		}
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   222
	//  Complete two asynchronous requests.
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   223
	iStatus = KRequestPending;
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   224
	SetActive();
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   225
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   226
	}
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parents:
diff changeset
   227
	
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   228
// ----------------------------------------------------------------------------
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   229
// CBrowserFaviconHandler::AppendToIconArray()
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   230
// ----------------------------------------------------------------------------
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   231
//		
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parents:
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   232
TInt CBrowserFaviconHandler::AppendToIconArray()
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parents:
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   233
	{
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   234
	TInt err( KErrNone );
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   235
	TInt arrayIndex(-1);
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   236
	
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	// Add the favicon to the icon array
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	TRAP( err, iIconArray->AppendL( iFavicon ); );
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   239
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   240
	// Favicon was successfully added to the array
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   241
	if ( !err )
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   242
		{		
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   243
		arrayIndex = iIconArray->Count() - 1;
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   244
		
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		// Keep track of the index of the favicon in the icon array
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   246
		if ( arrayIndex > -1 )
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   247
			{
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   248
			TFaviconIndex faviconIndex;			
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   249
			faviconIndex.iFavouritesItemIndex = iFavItems->At( iFavItemsCurrentIndex )->Uid();
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			faviconIndex.iIndex = arrayIndex;		
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   251
			TRAP( err, iFaviconArrayIndices->AppendL( faviconIndex ); )
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parents:
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   252
			
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			// If there was an error remove the favicon from the icon array
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   254
			if ( err )
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   255
				{
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   256
				iIconArray->Delete( iIconArray->Count() - 1 );				
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   257
				}
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   258
			else
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   259
				{
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   260
				iFavicon = NULL; // favicon ownership passed
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   261
				iFavItemsCurrentIndex++; // we can go to the next item now
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   262
				}
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   263
			}
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   264
		}
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parents:
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   265
		
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	// Ownership of the favicon was not passed, so we need to delete it
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   267
	if ( err )
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   268
		{
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   269
		iFaviconsFound--; // one less favicon in the array
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   270
		}	
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   271
		
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   272
	return err;
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   273
	}
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parents:
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   274
	
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   275
	
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::GetFaviconArrayIndex()
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// ----------------------------------------------------------------------------
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   279
//
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TInt CBrowserFaviconHandler::GetFaviconArrayIndex( const CFavouritesItem& aItem )
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	{
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   282
	TInt arrayIndex( KErrNotFound );
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parents:
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   283
	
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	// Find the index of the favicon in the icon array
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   285
	for ( TInt i=0; i<iFaviconArrayIndices->Count(); i++ )
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   286
		{
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   287
		// if uid is 0 then don't associate with favicon.  for adaptive bookmarks
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   288
		if ( aItem.Uid() && aItem.Uid() == iFaviconArrayIndices->At(i).iFavouritesItemIndex )
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   289
			{
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   290
			arrayIndex = iFaviconArrayIndices->At(i).iIndex;
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   291
			break;
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   292
			}			
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   293
		}	
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   294
	return arrayIndex;
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   295
	}
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parents:
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   296
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   297
// ----------------------------------------------------------------------------
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   298
// CBrowserFaviconHandler::ScalingCompletedL()
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// ----------------------------------------------------------------------------
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   300
//		
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   301
void CBrowserFaviconHandler::ScalingCompletedL(CFbsBitmap* aResult, const TRect& /*aTargetRect*/)
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   302
	{
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   303
	// Check that favicon hasn't already disappeared (i.e. if race cond in which scaler returns 
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parents:
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   304
	// after you've already left and deleted the icon handle concerned
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parents:
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   305
	if(NULL == iFavicon)
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parents:
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   306
		{
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   307
		return;
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   308
		}
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parents:
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   309
	
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parents:
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   310
	
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   311
	// Add the favicon to the icon array (which also contains other icons)
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parents:
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   312
	if (iHasMask)
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   313
		{
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   314
		iFavicon->SetMask(aResult);
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   315
		iHasMask = EFalse;
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parents:
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   316
		iBmpScaler->StartScalingL( *iFavicon->Bitmap(), iFaviconSize, EFalse );
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   317
		}
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   318
	else
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parents:
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   319
		{
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   320
		iFavicon->SetBitmap(aResult);
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parents:
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   321
		iFavicon->SetBitmapsOwnedExternally(EFalse);
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parents:
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   322
		TInt err = AppendToIconArray();
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parents:
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   323
		
84ad3b177aa3 Revision: 200911
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   324
		// Complete the AO
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parents:
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   325
		TRequestStatus* status = &iStatus;
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parents:
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   326
		User::RequestComplete( status, err );	
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parents:
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   327
		}
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parents:
diff changeset
   328
	}
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   329
// ----------------------------------------------------------------------------
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   330
// CBrowserFaviconHandler::DoCancel()
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parents:
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   331
// ----------------------------------------------------------------------------
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parents:
diff changeset
   332
//	
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parents:
diff changeset
   333
void CBrowserFaviconHandler::DoCancel()
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parents:
diff changeset
   334
	{
84ad3b177aa3 Revision: 200911
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   335
	TRequestStatus* s = &iStatus;
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parents:
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   336
	User::RequestComplete( s, KErrNone );
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parents:
diff changeset
   337
	}
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parents:
diff changeset
   338
	
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parents:
diff changeset
   339
		
84ad3b177aa3 Revision: 200911
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parents:
diff changeset
   340
// ----------------------------------------------------------------------------
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   341
// CBrowserFaviconHandler::RunL()
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parents:
diff changeset
   342
// ----------------------------------------------------------------------------
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parents:
diff changeset
   343
//		
84ad3b177aa3 Revision: 200911
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parents:
diff changeset
   344
void CBrowserFaviconHandler::RunL()
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parents:
diff changeset
   345
	{		
84ad3b177aa3 Revision: 200911
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parents:
diff changeset
   346
	TBool drawFavicons( EFalse );
84ad3b177aa3 Revision: 200911
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parents:
diff changeset
   347
		
84ad3b177aa3 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   348
	// Redraw the favicons at a predefined frequency
84ad3b177aa3 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   349
	if ( iFaviconsFound % KNumFaviconsToRedraw == 0 )
84ad3b177aa3 Revision: 200911
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parents:
diff changeset
   350
		{
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		drawFavicons = ETrue;
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		}
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	else
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		{
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		// We're not getting any more favicons: draw any undrawn ones
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		if ( iStatus != KErrNone )
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			{
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			// do a final draw
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			drawFavicons = ETrue;
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			}
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		}
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   362
	
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	if ( drawFavicons && iFaviconsFound )
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		{
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		iObserver.DrawFavicons();
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		}
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   367
	
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	// Continue getting favicons if no errors
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	if ( iStatus == KErrNone )
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		{
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		GetFaviconL();
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		}	
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parents:
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	}
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parents:
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   374
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// ----------------------------------------------------------------------------
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// CBrowserFaviconHandler::UpdateIconArray()
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// ----------------------------------------------------------------------------
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//	
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void CBrowserFaviconHandler::UpdateIconArray(CArrayPtr<CGulIcon>* aIconArray)
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parents:
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   380
    {
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   	iIconArray = aIconArray; 
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    }
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parents:
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   383
 
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// End of File