--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/visuallistmanager/inc/mglxvisuallistobserver.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,82 @@
+/*
+* 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:    Visual list observer interface
+*
+*/
+
+
+
+
+/**
+ * @internal reviewed 04/07/2007 by M Byrne
+ */
+
+#ifndef M_GLXVISUALLISTOBSERVER_H
+#define M_GLXVISUALLISTOBSERVER_H
+
+#include <e32std.h>
+#include <glxlistdefs.h>
+
+class MGlxVisualList;
+class CAlfVisual;
+
+/**
+ *  MGlxVisualListObserver 
+ * 
+ *  Observer to a list of visuals
+ *
+ * @author Aki Vanhatalo
+ */
+class MGlxVisualListObserver 
+	{
+public:
+
+	/**	
+	 * Focus has changed.
+	 * @param aFocusIndex new focus index
+	 * @param aItemsPerSecond speed of focus change
+	 * @param aList The visual list to which this notification relates
+	 * @param aType Type/direction of focus change
+	 */
+	virtual void HandleFocusChangedL(TInt aFocusIndex, TReal32 aItemsPerSecond,
+		MGlxVisualList* aList, NGlxListDefs::TFocusChangeType aType) = 0;
+ 
+	/**
+	 * Size of the rendering area has changed
+	 * @param aSize new size of the area
+	 * @param aList The visual list to which this notification relates
+	 */	
+	virtual void HandleSizeChanged(const TSize& aSize,
+		MGlxVisualList* aList) = 0;
+
+	/**
+	 * Visual is being removed. The visual instance will be 
+	 * destroyed after this call returns.
+	 * @param aVisual The visual which is being removed
+	 * @param aList The visual list to which this notification relates
+	 */
+	virtual void HandleVisualRemoved(const CAlfVisual* aVisual, 
+		MGlxVisualList* aList) = 0;
+
+	/**
+	 * Visual has been added
+	 * @param aVisual The new visual
+	 * @param aIndex The list index of the new visual
+	 * @param aList The visual list to which this notification relates
+	 */
+	virtual void HandleVisualAddedL( CAlfVisual* aVisual, TInt aIndex, 
+		MGlxVisualList* aList) = 0;
+	};
+
+#endif // M_GLXVISUALLISTOBSERVER_H