gecko/view/public/nsIScrollPositionListener.h
2012-05-21 12:12:37 +01:00

25 lines
720 B
C++

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