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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 nsMathMLmrowFrame_h___
#define nsMathMLmrowFrame_h___
#include "mozilla/Attributes.h"
#include "nsMathMLContainerFrame.h"
namespace mozilla {
class PresShell;
} // namespace mozilla
//
// <mrow> -- horizontally group any number of subexpressions
// <mphantom> -- make content invisible but preserve its size
// <mstyle> -- make style changes that affect the rendering of its contents
//
class nsMathMLmrowFrame final : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
friend nsIFrame* NS_NewMathMLmrowFrame(mozilla::PresShell* aPresShell,
ComputedStyle* aStyle);
nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
int32_t aModType) override;
NS_IMETHOD
InheritAutomaticData(nsIFrame* aParent) override;
NS_IMETHOD
TransmitAutomaticData() override {
return TransmitAutomaticDataForMrowLikeElement();
}
eMathMLFrameType GetMathMLFrameType() override;
bool IsMrowLike() override {
// <mrow> elements with a single child are treated identically to the case
// where the child wasn't within an mrow, so we pretend the mrow isn't an
// mrow in that situation.
return mFrames.FirstChild() != mFrames.LastChild() || !mFrames.FirstChild();
}
protected:
explicit nsMathMLmrowFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
: nsMathMLContainerFrame(aStyle, aPresContext, kClassID) {}
virtual ~nsMathMLmrowFrame();
};
#endif /* nsMathMLmrowFrame_h___ */
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