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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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"
//
// <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 : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS
friend nsIFrame* NS_NewMathMLmrowFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
virtual nsresult
AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType) override;
NS_IMETHOD
InheritAutomaticData(nsIFrame* aParent) override;
NS_IMETHOD
TransmitAutomaticData() override {
return TransmitAutomaticDataForMrowLikeElement();
}
virtual 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(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
virtual ~nsMathMLmrowFrame();
};
#endif /* nsMathMLmrowFrame_h___ */
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