/* -*- 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___ */