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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
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42
docshell/base/nsIScrollObserver.h
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42
docshell/base/nsIScrollObserver.h
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsIScrollObserver_h___
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#define nsIScrollObserver_h___
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#include "nsISupports.h"
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#include "Units.h"
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#define NS_ISCROLLOBSERVER_IID \
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{ 0xaa5026eb, 0x2f88, 0x4026, \
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{ 0xa4, 0x6b, 0xf4, 0x59, 0x6b, 0x4e, 0xdf, 0x00 } }
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class nsIScrollObserver : public nsISupports
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCROLLOBSERVER_IID)
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/**
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* Called when the scroll position of some element has changed.
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*/
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virtual void ScrollPositionChanged() = 0;
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/**
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* Called when an async panning/zooming transform has started being applied
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* and passed the scroll offset
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*/
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virtual void AsyncPanZoomStarted() {};
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/**
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* Called when an async panning/zooming transform is no longer applied
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* and passed the scroll offset
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*/
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virtual void AsyncPanZoomStopped() {};
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsIScrollObserver, NS_ISCROLLOBSERVER_IID)
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#endif /* nsIScrollObserver_h___ */
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