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265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
/* -*- 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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// Must be kept in sync with xpcom/rust/xpcom/src/interfaces/nonidl.rs
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#define NS_ISCROLLOBSERVER_IID \
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{ \
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0xaa5026eb, 0x2f88, 0x4026, { \
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0xa4, 0x6b, 0xf4, 0x59, 0x6b, 0x4e, 0xdf, 0x00 \
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} \
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}
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class nsIScrollObserver : public nsISupports {
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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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