Bug 1856663 - Add more chunks for Android mochitest-plain. r=jmaher,taskgraph-reviewe...
[gecko.git] / layout / mathml / nsMathMLmrowFrame.h
blobfd79b0c52013302c44a691ea707ca2c3734ca9f3
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #ifndef nsMathMLmrowFrame_h___
8 #define nsMathMLmrowFrame_h___
10 #include "mozilla/Attributes.h"
11 #include "nsMathMLContainerFrame.h"
13 namespace mozilla {
14 class PresShell;
15 } // namespace mozilla
18 // <mrow> -- horizontally group any number of subexpressions
19 // <mphantom> -- make content invisible but preserve its size
20 // <mstyle> -- make style changes that affect the rendering of its contents
23 class nsMathMLmrowFrame final : public nsMathMLContainerFrame {
24 public:
25 NS_DECL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
27 friend nsIFrame* NS_NewMathMLmrowFrame(mozilla::PresShell* aPresShell,
28 ComputedStyle* aStyle);
30 virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
31 int32_t aModType) override;
33 NS_IMETHOD
34 InheritAutomaticData(nsIFrame* aParent) override;
36 NS_IMETHOD
37 TransmitAutomaticData() override {
38 return TransmitAutomaticDataForMrowLikeElement();
41 virtual eMathMLFrameType GetMathMLFrameType() override;
43 bool IsMrowLike() override {
44 // <mrow> elements with a single child are treated identically to the case
45 // where the child wasn't within an mrow, so we pretend the mrow isn't an
46 // mrow in that situation.
47 return mFrames.FirstChild() != mFrames.LastChild() || !mFrames.FirstChild();
50 protected:
51 explicit nsMathMLmrowFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
52 : nsMathMLContainerFrame(aStyle, aPresContext, kClassID) {}
53 virtual ~nsMathMLmrowFrame();
56 #endif /* nsMathMLmrowFrame_h___ */