diff -r b023a8d2866a -r ea65f74e6de4 photosgallery/viewframework/views/gridview/inc/glxgridviewmlobserver.h
--- a/photosgallery/viewframework/views/gridview/inc/glxgridviewmlobserver.h	Thu Jul 15 18:39:01 2010 +0300
+++ b/photosgallery/viewframework/views/gridview/inc/glxgridviewmlobserver.h	Thu Aug 19 09:55:03 2010 +0300
@@ -23,10 +23,15 @@
 #include <mglxmedialistobserver.h>
 #include <glxfiltergeneraldefs.h>
 
+// CONSTANTS
+const TInt KNoOfPages(3);
+const TInt KBufferTresholdSize(3);    // in rows
+
 // FORWARD DECLARATIONS
 class CGlxMediaList;
 class CHgGrid;
 class CGlxDRMUtility;
+class MHgScrollBufferObserver;
 //class CHgContextUtility;
 
 // CLASS DECLARATION
@@ -41,9 +46,10 @@
      *
      * @return Pointer to newly created object.
      */
-    IMPORT_C static CGlxGridViewMLObserver* NewL(MGlxMediaList& aMediaList,
-            CHgGrid* aHgGrid, TGlxFilterItemType aFilterType =
-                    EGlxFilterVideoAndImages);
+    IMPORT_C static CGlxGridViewMLObserver* NewL(
+            MHgScrollBufferObserver& aHgScrollBufferObs,
+            MGlxMediaList& aMediaList, CHgGrid* aHgGrid,
+            TGlxFilterItemType aFilterType = EGlxFilterVideoAndImages);
 
     /**
      * Destructor.
@@ -71,7 +77,8 @@
     /**
      * C++ default constructor.
      */
-    CGlxGridViewMLObserver(MGlxMediaList& aMediaList, CHgGrid* aHgGrid,
+    CGlxGridViewMLObserver(MHgScrollBufferObserver& aHgScrollBufferObs,
+            MGlxMediaList& aMediaList, CHgGrid* aHgGrid,
             TGlxFilterItemType aFilterType);
 
     /**
@@ -127,6 +134,8 @@
     void SetIconL(TInt aItemIndex, TInt aBitmapId, TInt aMaskId, TInt aFlags);
     
 private:
+    // Hg Grid scroll buffer observer
+    MHgScrollBufferObserver& iHgScrollBufferObs;
 
     MGlxMediaList& iMediaList;