view/public/nsIScrollPositionListener.h
author Chris Coulson <chris.coulson@canonical.com>
Sat, 29 Sep 2012 12:32:57 -0400
changeset 108642 e05d8c7fc54b598630a927569f92c18991d0765b
parent 94475 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 795395 - Don't unload the library immediately on failure on nsGSettingsService::Init(). r=karlt We return a failure anyway, so the component manager calls our destructor where we do the unload

/* -*- 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___ */