--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailuis/uicomponents/inc/fstreenodevisualizer.h	Thu Dec 17 08:39:21 2009 +0200
@@ -0,0 +1,65 @@
+/*
+* Copyright (c) 2007 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:  MFsNodeVisualizer is an interface for the node visualizer.
+*
+*/
+
+
+#ifndef M_FSTREENODEVISUALIZER_H
+#define M_FSTREENODEVISUALIZER_H
+
+
+#include "fstreeitemvisualizer.h"
+
+
+/**
+ * MFsNodeVisualizer is an interface for the node visualizer.
+ *
+ * This is an interface for node visualization in the tree. This interface is 
+ * based on item visualization interface. This interface adds functions to 
+ * change node's visualization state between collapsed and unrolled.
+ * @code
+ *
+ * @endcode
+ *
+ * @lib 
+ */
+NONSHARABLE_CLASS ( MFsTreeNodeVisualizer ): public MFsTreeItemVisualizer
+    {
+public:
+
+    /**
+     * C++ destructor
+     */
+    virtual ~MFsTreeNodeVisualizer() {};    
+    
+public:
+
+    /**
+     * Sets visualized node's state to rolled/unrolled.
+     * 
+     * @param aFlag ETrue to visualize node as rolled (collapsed).
+     */
+    virtual void SetExpanded( TBool aFlag, const MFsTreeItemData* aData = 0 ) = 0;
+    
+    /**
+     * Returns rolled/unrolled state of the node's visualization.
+     * 
+     * @return ETrue if node is visualized as rolled (collapsed).
+     */
+    virtual TBool IsExpanded() const = 0;
+    
+    };
+        
+#endif // M_FSTREENODEVISUALIZER_H