forked from mirrors/gecko-dev
2f9688c14e
Additionally, this patch makes `nsFrame.h` stop including `nsIPresShell.h` and makes each users include `mozilla/PresShell.h` instead. So, this improves rebuild performance of `nsIPresShell.h` (and `mozilla/PresShell.h` in the future). Note that due to `nsIFrame::PresShell()`, `mozilla::` prefix is necessary for `PresShell` in a lot of classes which are derived from `nsIFrame` even in `.cpp` files. Differential Revision: https://phabricator.services.mozilla.com/D27476 --HG-- extra : moz-landing-system : lando
56 lines
1.9 KiB
C++
56 lines
1.9 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 nsMathMLmrowFrame_h___
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#define nsMathMLmrowFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsMathMLContainerFrame.h"
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namespace mozilla {
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class PresShell;
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} // namespace mozilla
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//
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// <mrow> -- horizontally group any number of subexpressions
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// <mphantom> -- make content invisible but preserve its size
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// <mstyle> -- make style changes that affect the rendering of its contents
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//
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class nsMathMLmrowFrame final : public nsMathMLContainerFrame {
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public:
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NS_DECL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
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friend nsIFrame* NS_NewMathMLmrowFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) override;
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NS_IMETHOD
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InheritAutomaticData(nsIFrame* aParent) override;
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NS_IMETHOD
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TransmitAutomaticData() override {
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return TransmitAutomaticDataForMrowLikeElement();
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}
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virtual eMathMLFrameType GetMathMLFrameType() override;
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bool IsMrowLike() override {
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// <mrow> elements with a single child are treated identically to the case
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// where the child wasn't within an mrow, so we pretend the mrow isn't an
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// mrow in that situation.
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return mFrames.FirstChild() != mFrames.LastChild() || !mFrames.FirstChild();
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}
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protected:
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explicit nsMathMLmrowFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
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: nsMathMLContainerFrame(aStyle, aPresContext, kClassID) {}
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virtual ~nsMathMLmrowFrame();
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};
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#endif /* nsMathMLmrowFrame_h___ */
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