LCOV - code coverage report
Current view: directory - layout/mathml - nsMathMLmstyleFrame.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 26 0 0.0 %
Date: 2012-06-02 Functions: 10 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla MathML Project.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * The University Of Queensland.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1999
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Roger B. Sidje <rbs@maths.uq.edu.au>
      24                 :  *   David J. Fiddes <D.J.Fiddes@hw.ac.uk>
      25                 :  *   Frederic Wang <fred.wang@free.fr>
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      29                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : 
      42                 : #include "nsCOMPtr.h"
      43                 : #include "nsFrame.h"
      44                 : #include "nsStyleContext.h"
      45                 : #include "nsStyleConsts.h"
      46                 : #include "nsINameSpaceManager.h"
      47                 : 
      48                 : #include "nsMathMLmstyleFrame.h"
      49                 : 
      50                 : //
      51                 : // <mstyle> -- style change
      52                 : //
      53                 : 
      54                 : nsIFrame*
      55               0 : NS_NewMathMLmstyleFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
      56                 : {
      57               0 :   return new (aPresShell) nsMathMLmstyleFrame(aContext);
      58                 : }
      59                 : 
      60               0 : NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmstyleFrame)
      61                 : 
      62               0 : nsMathMLmstyleFrame::~nsMathMLmstyleFrame()
      63                 : {
      64               0 : }
      65                 : 
      66                 : // mstyle needs special care for its scriptlevel and displaystyle attributes
      67                 : NS_IMETHODIMP
      68               0 : nsMathMLmstyleFrame::InheritAutomaticData(nsIFrame* aParent) 
      69                 : {
      70                 :   // let the base class get the default from our parent
      71               0 :   nsMathMLContainerFrame::InheritAutomaticData(aParent);
      72                 : 
      73                 :   // sync with our current state
      74               0 :   mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
      75               0 :   mPresentationData.mstyle = this;
      76                 : 
      77                 :   // see if the displaystyle attribute is there
      78               0 :   nsMathMLFrame::FindAttrDisplaystyle(mContent, mPresentationData);
      79                 : 
      80                 :   // see if the directionality attribute is there
      81               0 :   nsMathMLFrame::FindAttrDirectionality(mContent, mPresentationData);
      82                 : 
      83               0 :   return NS_OK;
      84                 : }
      85                 : 
      86                 : NS_IMETHODIMP
      87               0 : nsMathMLmstyleFrame::TransmitAutomaticData()
      88                 : {
      89               0 :   return TransmitAutomaticDataForMrowLikeElement();
      90                 : }
      91                 : 
      92                 : // displaystyle and scriptlevel are special in <mstyle>...
      93                 : // Since UpdatePresentation() and UpdatePresentationDataFromChildAt() can be called
      94                 : // by a parent, ensure that the explicit attributes of <mstyle> take precedence
      95                 : NS_IMETHODIMP
      96               0 : nsMathMLmstyleFrame::UpdatePresentationData(PRUint32        aFlagsValues,
      97                 :                                             PRUint32        aWhichFlags)
      98                 : {
      99               0 :   if (NS_MATHML_HAS_EXPLICIT_DISPLAYSTYLE(mPresentationData.flags)) {
     100                 :     // our current state takes precedence, disallow updating the displastyle
     101               0 :     aWhichFlags &= ~NS_MATHML_DISPLAYSTYLE;
     102               0 :     aFlagsValues &= ~NS_MATHML_DISPLAYSTYLE;
     103                 :   }
     104                 : 
     105               0 :   return nsMathMLContainerFrame::UpdatePresentationData(aFlagsValues, aWhichFlags);
     106                 : }
     107                 : 
     108                 : NS_IMETHODIMP
     109               0 : nsMathMLmstyleFrame::UpdatePresentationDataFromChildAt(PRInt32         aFirstIndex,
     110                 :                                                        PRInt32         aLastIndex,
     111                 :                                                        PRUint32        aFlagsValues,
     112                 :                                                        PRUint32        aWhichFlags)
     113                 : {
     114               0 :   if (NS_MATHML_HAS_EXPLICIT_DISPLAYSTYLE(mPresentationData.flags)) {
     115                 :     // our current state takes precedence, disallow updating the displastyle
     116               0 :     aWhichFlags &= ~NS_MATHML_DISPLAYSTYLE;
     117               0 :     aFlagsValues &= ~NS_MATHML_DISPLAYSTYLE;
     118                 :   }
     119                 : 
     120                 :   // let the base class worry about the update
     121                 :   return
     122                 :     nsMathMLContainerFrame::UpdatePresentationDataFromChildAt(
     123               0 :       aFirstIndex, aLastIndex, aFlagsValues, aWhichFlags); 
     124                 : }
     125                 : 
     126                 : NS_IMETHODIMP
     127               0 : nsMathMLmstyleFrame::AttributeChanged(PRInt32         aNameSpaceID,
     128                 :                                       nsIAtom*        aAttribute,
     129                 :                                       PRInt32         aModType)
     130                 : {
     131                 :   // Other attributes can affect too many things, ask our parent to re-layout
     132                 :   // its children so that we can pick up changes in our attributes & transmit
     133                 :   // them in our subtree. However, our siblings will be re-laid too. We used
     134                 :   // to have a more speedier but more verbose alternative that didn't re-layout
     135                 :   // our siblings. See bug 114909 - attachment 67668.
     136               0 :   return ReLayoutChildren(mParent);
     137                 : }

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