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 :
47 : #include "nsMathMLmrowFrame.h"
48 :
49 : //
50 : // <mrow> -- horizontally group any number of subexpressions - implementation
51 : //
52 :
53 : nsIFrame*
54 0 : NS_NewMathMLmrowFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
55 : {
56 0 : return new (aPresShell) nsMathMLmrowFrame(aContext);
57 : }
58 :
59 0 : NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
60 :
61 0 : nsMathMLmrowFrame::~nsMathMLmrowFrame()
62 : {
63 0 : }
64 :
65 : NS_IMETHODIMP
66 0 : nsMathMLmrowFrame::InheritAutomaticData(nsIFrame* aParent)
67 : {
68 : // let the base class get the default from our parent
69 0 : nsMathMLContainerFrame::InheritAutomaticData(aParent);
70 :
71 0 : mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
72 :
73 0 : if (mContent->Tag() == nsGkAtoms::mrow_) {
74 : // see if the directionality attribute is there
75 0 : nsMathMLFrame::FindAttrDirectionality(mContent, mPresentationData);
76 : }
77 :
78 0 : return NS_OK;
79 : }
80 :
81 : NS_IMETHODIMP
82 0 : nsMathMLmrowFrame::AttributeChanged(PRInt32 aNameSpaceID,
83 : nsIAtom* aAttribute,
84 : PRInt32 aModType)
85 : {
86 : // Special for <mtable>: In the frame construction code, we also use
87 : // this frame class as a wrapper for mtable. Hence, we should pass the
88 : // notification to the real mtable
89 0 : if (mContent->Tag() == nsGkAtoms::mtable_) {
90 0 : nsIFrame* frame = mFrames.FirstChild();
91 0 : for ( ; frame; frame = frame->GetFirstPrincipalChild()) {
92 : // drill down to the real mtable
93 0 : if (frame->GetType() == nsGkAtoms::tableOuterFrame)
94 0 : return frame->AttributeChanged(aNameSpaceID, aAttribute, aModType);
95 : }
96 0 : NS_NOTREACHED("mtable wrapper without the real table frame");
97 : }
98 :
99 0 : return nsMathMLContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
100 : }
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