Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #include "nsMathMLmrowFrame.h"
       7             : #include "mozilla/gfx/2D.h"
       8             : 
       9             : //
      10             : // <mrow> -- horizontally group any number of subexpressions - implementation
      11             : //
      12             : 
      13             : nsIFrame*
      14           0 : NS_NewMathMLmrowFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
      15             : {
      16           0 :   return new (aPresShell) nsMathMLmrowFrame(aContext);
      17             : }
      18             : 
      19           0 : NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
      20             : 
      21           0 : nsMathMLmrowFrame::~nsMathMLmrowFrame()
      22             : {
      23           0 : }
      24             : 
      25             : NS_IMETHODIMP
      26           0 : nsMathMLmrowFrame::InheritAutomaticData(nsIFrame* aParent)
      27             : {
      28             :   // let the base class get the default from our parent
      29           0 :   nsMathMLContainerFrame::InheritAutomaticData(aParent);
      30             : 
      31           0 :   mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
      32             : 
      33           0 :   return NS_OK;
      34             : }
      35             : 
      36             : nsresult
      37           0 : nsMathMLmrowFrame::AttributeChanged(int32_t  aNameSpaceID,
      38             :                                     nsIAtom* aAttribute,
      39             :                                     int32_t  aModType)
      40             : {
      41             :   // Special for <mtable>: In the frame construction code, we also use
      42             :   // this frame class as a wrapper for mtable. Hence, we should pass the
      43             :   // notification to the real mtable
      44           0 :   if (mContent->IsMathMLElement(nsGkAtoms::mtable_)) {
      45           0 :     nsIFrame* frame = mFrames.FirstChild();
      46           0 :     for ( ; frame; frame = frame->PrincipalChildList().FirstChild()) {
      47             :       // drill down to the real mtable
      48           0 :       if (frame->IsTableWrapperFrame())
      49           0 :         return frame->AttributeChanged(aNameSpaceID, aAttribute, aModType);
      50             :     }
      51           0 :     NS_NOTREACHED("mtable wrapper without the real table frame");
      52             :   }
      53             : 
      54           0 :   return nsMathMLContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
      55             : }
      56             : 
      57             : /* virtual */ eMathMLFrameType
      58           0 : nsMathMLmrowFrame::GetMathMLFrameType()
      59             : {
      60           0 :   if (!IsMrowLike()) {
      61           0 :     nsIMathMLFrame* child = do_QueryFrame(mFrames.FirstChild());
      62           0 :     if (child) {
      63             :       // We only have one child, so we return the frame type of that child as if
      64             :       // we didn't exist.
      65           0 :       return child->GetMathMLFrameType();
      66             :     }
      67             :   }
      68           0 :   return nsMathMLFrame::GetMathMLFrameType();
      69             : }