michael@0: /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsIScrollPositionListener_h___
michael@0: #define nsIScrollPositionListener_h___
michael@0: 
michael@0: #include "nsCoord.h"
michael@0: 
michael@0: /**
michael@0:  * Provides a way to learn about scroll position changes of nsIScrollableFrame's.
michael@0:  */
michael@0: class nsIScrollPositionListener {
michael@0: public:
michael@0: 
michael@0: 	virtual void ScrollPositionWillChange(nscoord aX, nscoord aY) = 0;
michael@0: 	virtual void ScrollPositionDidChange(nscoord aX, nscoord aY) = 0;
michael@0: };
michael@0: 
michael@0: #endif /* nsIScrollPositionListener_h___ */
michael@0: