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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/. */
#include "nsMathMLmrowFrame.h"
#include "mozilla/gfx/2D.h"
//
// <mrow> -- horizontally group any number of subexpressions - implementation
//
nsIFrame*
NS_NewMathMLmrowFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsMathMLmrowFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
nsMathMLmrowFrame::~nsMathMLmrowFrame()
{
}
NS_IMETHODIMP
nsMathMLmrowFrame::InheritAutomaticData(nsIFrame* aParent)
{
// let the base class get the default from our parent
nsMathMLContainerFrame::InheritAutomaticData(aParent);
mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
return NS_OK;
}
nsresult
nsMathMLmrowFrame::AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType)
{
// Special for <mtable>: In the frame construction code, we also use
// this frame class as a wrapper for mtable. Hence, we should pass the
// notification to the real mtable
if (mContent->IsMathMLElement(nsGkAtoms::mtable_)) {
nsIFrame* frame = mFrames.FirstChild();
for ( ; frame; frame = frame->PrincipalChildList().FirstChild()) {
// drill down to the real mtable
if (frame->GetType() == nsGkAtoms::tableWrapperFrame)
return frame->AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
NS_NOTREACHED("mtable wrapper without the real table frame");
}
return nsMathMLContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
/* virtual */ eMathMLFrameType
nsMathMLmrowFrame::GetMathMLFrameType()
{
if (!IsMrowLike()) {
nsIMathMLFrame* child = do_QueryFrame(mFrames.FirstChild());
if (child) {
// We only have one child, so we return the frame type of that child as if
// we didn't exist.
return child->GetMathMLFrameType();
}
}
return nsMathMLFrame::GetMathMLFrameType();
}
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