diff -r 000000000000 -r 4e91876724a2 photosgallery/viewframework/dataprovider/src/glxattributerequirement.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/dataprovider/src/glxattributerequirement.cpp	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,158 @@
+/*
+* Copyright (c) 2008-2009 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:    set the required attribute to the medialist
+*
+*/
+
+
+
+
+#include "glxattributerequirement.h"    // This class will set the required attribute to the medialist
+#include <mpxattribute.h>               // MPX Attribute data type class
+#include <glxuistd.h>                   // attribute/thumbnail fetch context priority definitions
+#include <glxlog.h>                     // Logging
+#include <glxtracer.h>
+#include <AknUtils.h>
+#include <glxuiutility.h>
+// ----------------------------------------------------------------------------
+// Two phase construction
+// ----------------------------------------------------------------------------
+//
+EXPORT_C CGlxAttributeRequirements*  CGlxAttributeRequirements::NewL( 
+    MGlxMediaList& aMediaList )
+	{
+	TRACER("CGlxAttributeRequirements::NewL");
+	CGlxAttributeRequirements* self = CGlxAttributeRequirements::NewLC(   
+	    aMediaList );
+	CleanupStack::Pop( self );
+	self->ConstructL();
+	return self;
+	}
+
+// ----------------------------------------------------------------------------
+// Two phase construction
+// ----------------------------------------------------------------------------
+//
+CGlxAttributeRequirements*  CGlxAttributeRequirements::NewLC( MGlxMediaList& 
+    aMediaList )
+	{
+	TRACER("CGlxAttributeRequirements::NewLC");
+	CGlxAttributeRequirements* self = new ( ELeave ) CGlxAttributeRequirements(
+	     aMediaList );
+	CleanupStack::PushL( self );
+	return self;
+	}
+
+// ----------------------------------------------------------------------------
+// Deafult constructor
+// ----------------------------------------------------------------------------
+//	
+CGlxAttributeRequirements::CGlxAttributeRequirements( MGlxMediaList& aMediaList):
+    iMediaList( aMediaList )
+	{
+	}
+	
+// ----------------------------------------------------------------------------
+// ConstructL
+// ----------------------------------------------------------------------------
+//	
+void CGlxAttributeRequirements::ConstructL()
+    {
+        
+    }
+
+// ----------------------------------------------------------------------------
+// Destructor
+// ----------------------------------------------------------------------------
+//
+CGlxAttributeRequirements::~CGlxAttributeRequirements()
+	{
+	TRACER("CGlxAttributeRequirements::~CGlxAttributeRequirements");
+    for( TInt i = 0;i <=iArributeContext.Count()-1; i++ )
+       { 
+        iMediaList.RemoveContext(iArributeContext[i]);
+        }
+    iArributeContext.ResetAndDestroy();
+    
+	//remove the context and delete the same
+	iMediaList.RemoveContext(iFsThumbnailContext);
+    delete iFsThumbnailContext;
+    
+    for( TInt i = 0;i <=iThumbnailContext.Count()-1; i++ )
+	    {
+	    iMediaList.RemoveContext(iThumbnailContext[i]);
+	    }
+    iThumbnailContext.ResetAndDestroy();
+	}
+
+// ----------------------------------------------------------------------------
+// Creating the attribute context and setting it to the medialist
+// ----------------------------------------------------------------------------
+//	
+void CGlxAttributeRequirements::AddAttributeL( const TMPXAttribute& aAttribute )
+    {
+    TRACER("CGlxAttributeRequirements::AddAttributeL");	
+	iArributeContext.AppendL(CGlxDefaultAttributeContext::NewL() );
+	iArributeContext[iArributeContext.Count()-1]->SetRangeOffsets(10,10);
+	iArributeContext[iArributeContext.Count()-1]->AddAttributeL( aAttribute );
+	iMediaList.AddContextL( iArributeContext[iArributeContext.Count()-1], KMaxTInt );		
+    }
+
+// ----------------------------------------------------------------------------
+// Creating the thumbnail context and setting it to the medialist
+// ----------------------------------------------------------------------------
+//	
+void CGlxAttributeRequirements::AddThumbnailL( const TSize& aSize )
+    {
+    TRACER("CGlxAttributeRequirements::AddThumbnailL");
+    if( aSize.iHeight > 200 )
+    	{
+    	iFromFocusOutwardIterator.SetRangeOffsets( 2,2 );
+    	//check if Fullscreen thumbnail context is initialized
+		if(!iFsThumbnailContext)
+			{
+			//created new context, set the priority higher than grid thumbnail requests and set the default spec based on the 
+			//current orientation
+			iFsThumbnailContext = CGlxThumbnailContext::NewL(&iFromFocusOutwardIterator);
+			iFsThumbnailContext->SetDefaultSpec(aSize.iWidth, aSize.iHeight);
+			iMediaList.AddContextL(iFsThumbnailContext, KGlxFetchContextPriorityGridViewFullscreenVisibleThumbnail);
+			}			
+		else
+			{
+			//Fullscreen context already created, hence, modify the default spec, to take care of orientation change
+			iFsThumbnailContext->SetDefaultSpec(aSize.iWidth, aSize.iHeight);
+			}
+    	}
+    else
+    	{
+        if (AknLayoutUtils::PenEnabled())
+            {
+            iThumbnailContext.AppendL(CGlxThumbnailContext::NewL(&iBlockyIterator));
+            }
+        else
+            {
+            CGlxUiUtility* uiUtility  = CGlxUiUtility::UtilityL();
+            CleanupClosePushL(*uiUtility);    
+            TInt visItems = uiUtility->VisibleItemsInPageGranularityL();
+            CleanupStack::PopAndDestroy(uiUtility);            
+            
+            //we are fetching visible items on priority, 
+            //5 pages would be good to have as it uses FromFocusOutwardIterator
+            iFromFocusOutwardIterator.SetRangeOffsets(3*visItems , 2*visItems );
+            iThumbnailContext.AppendL(CGlxThumbnailContext::NewL(&iFromFocusOutwardIterator)); 
+            }
+        iThumbnailContext[iThumbnailContext.Count()-1]->SetDefaultSpec (aSize.iWidth, aSize.iHeight );
+        iMediaList.AddContextL( iThumbnailContext[iThumbnailContext.Count()-1], KGlxFetchContextPriorityNormal );
+    	}
+    }