gecko/docshell/base/nsIScrollObserver.h

39 lines
1.1 KiB
C++

/* -*- Mode: C++; 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 nsIScrollObserver_h___
#define nsIScrollObserver_h___
#include "nsISupports.h"
#define NS_ISCROLLOBSERVER_IID \
{ 0x03465b77, 0x9ce2, 0x4d19, \
{ 0xb2, 0xf6, 0x82, 0xae, 0xee, 0x85, 0xc3, 0xbf } }
class nsIScrollObserver : public nsISupports
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCROLLOBSERVER_IID)
/**
* Called when the scroll position of some element has changed.
*/
virtual void ScrollPositionChanged() = 0;
/**
* Called when an async panning/zooming transform has started being applied.
*/
virtual void AsyncPanZoomStarted(){};
/**
* Called when an async panning/zooming transform is no longer applied.
*/
virtual void AsyncPanZoomStopped(){};
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIScrollObserver, NS_ISCROLLOBSERVER_IID)
#endif /* nsIScrollObserver_h___ */