michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsMathMLmrowFrame.h"
michael@0: #include "mozilla/gfx/2D.h"
michael@0: 
michael@0: //
michael@0: // <mrow> -- horizontally group any number of subexpressions - implementation
michael@0: //
michael@0: 
michael@0: nsIFrame*
michael@0: NS_NewMathMLmrowFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) nsMathMLmrowFrame(aContext);
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
michael@0: 
michael@0: nsMathMLmrowFrame::~nsMathMLmrowFrame()
michael@0: {
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsMathMLmrowFrame::InheritAutomaticData(nsIFrame* aParent)
michael@0: {
michael@0:   // let the base class get the default from our parent
michael@0:   nsMathMLContainerFrame::InheritAutomaticData(aParent);
michael@0: 
michael@0:   mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsMathMLmrowFrame::AttributeChanged(int32_t  aNameSpaceID,
michael@0:                                     nsIAtom* aAttribute,
michael@0:                                     int32_t  aModType)
michael@0: {
michael@0:   // Special for <mtable>: In the frame construction code, we also use
michael@0:   // this frame class as a wrapper for mtable. Hence, we should pass the
michael@0:   // notification to the real mtable
michael@0:   if (mContent->Tag() == nsGkAtoms::mtable_) {
michael@0:     nsIFrame* frame = mFrames.FirstChild();
michael@0:     for ( ; frame; frame = frame->GetFirstPrincipalChild()) {
michael@0:       // drill down to the real mtable
michael@0:       if (frame->GetType() == nsGkAtoms::tableOuterFrame)
michael@0:         return frame->AttributeChanged(aNameSpaceID, aAttribute, aModType);
michael@0:     }
michael@0:     NS_NOTREACHED("mtable wrapper without the real table frame");
michael@0:   }
michael@0: 
michael@0:   return nsMathMLContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
michael@0: }
michael@0: 
michael@0: /* virtual */ eMathMLFrameType
michael@0: nsMathMLmrowFrame::GetMathMLFrameType()
michael@0: {
michael@0:   if (!IsMrowLike()) {
michael@0:     nsIMathMLFrame* child = do_QueryFrame(mFrames.FirstChild());
michael@0:     if (child) {
michael@0:       // We only have one child, so we return the frame type of that child as if
michael@0:       // we didn't exist.
michael@0:       return child->GetMathMLFrameType();
michael@0:     }
michael@0:   }
michael@0:   return nsMathMLFrame::GetMathMLFrameType();
michael@0: }