view/public/nsIScrollPositionListener.h
author Chris Jones <jones.chris.g@gmail.com>
Sat, 13 Oct 2012 03:16:53 -0700
changeset 118128 9cabc319f7ff447ab70bf6a2bfc51a18af05996d
parent 98529 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 799849: Wrap nothrow libstdc++ allocators. r=glandium

/* -*- 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___ */