// Copyright (C) 2000-2007, Luca Padovani <padovani@sti.uniurb.it>.
// 
// This file is part of GtkMathView, a flexible, high-quality rendering
// engine for MathML documents.
// 
// GtkMathView is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// 
// GtkMathView is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#include <config.h>

#include <cassert>

#include "FormattingContext.hh"
#include "MathGraphicDevice.hh"
#include "MathMLNormalizingContainerElement.hh"
#include "MathMLInferredRowElement.hh"

MathMLNormalizingContainerElement::MathMLNormalizingContainerElement(const SmartPtr<class MathMLNamespaceContext>& context)
  : MathMLBinContainerElement(context)
{ }

MathMLNormalizingContainerElement::~MathMLNormalizingContainerElement()
{ }

AreaRef
MathMLNormalizingContainerElement::format(FormattingContext& ctxt)
{
  if (dirtyLayout())
    {
      ctxt.push(this);
      AreaRef res = getChild() ? getChild()->format(ctxt) : 0;
      if (res) res = ctxt.MGD()->wrapper(ctxt, res);
      setArea(res);
      ctxt.pop();
      resetDirtyLayout();
    }

  return getArea();
}

void
MathMLNormalizingContainerElement::setDirtyStructure()
{
  MathMLBinContainerElement::setDirtyStructure();
  // if the structure of this element gets dirty, and there is
  // an inferred mrow, then the mrow itself has a dirty structure
  if (getChild() && is_a<MathMLInferredRowElement>(getChild()))
    getChild()->setDirtyStructure();
}