forked from mirrors/gecko-dev
56 lines
1.7 KiB
C++
56 lines
1.7 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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//
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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 : public nsMathMLContainerFrame {
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public:
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NS_DECL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
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friend nsIFrame* NS_NewMathMLmrowFrame(nsIPresShell* aPresShell, ComputedStyle* aStyle);
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virtual nsresult
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AttributeChanged(int32_t aNameSpaceID,
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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
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GetMathMLFrameType() override;
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bool
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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() ||
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!mFrames.FirstChild();
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}
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protected:
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explicit nsMathMLmrowFrame(ComputedStyle* aStyle)
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: nsMathMLContainerFrame(aStyle, kClassID) {}
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virtual ~nsMathMLmrowFrame();
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};
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#endif /* nsMathMLmrowFrame_h___ */
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