Bug 556767 - (semantics) Improve/Complete implementation of <semantics/>. r=roc

layout/mathml/nsMathMLsemanticsFrame.cpp

@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla MathML Project.
+ *
+ * The Initial Developer of the Original Code is
+ * Frederic Wang <fred.wang@free.fr>
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+#include "nsMathMLsemanticsFrame.h"
+
+//
+// <semantics> -- associate annotations with a MathML expression
+//
+
+nsIFrame*
+NS_NewMathMLsemanticsFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+  return new (aPresShell) nsMathMLsemanticsFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsMathMLsemanticsFrame)
+
+nsMathMLsemanticsFrame::~nsMathMLsemanticsFrame()
+{
+}
+
+NS_IMETHODIMP
+nsMathMLsemanticsFrame::TransmitAutomaticData()
+{
+  // The REC defines the following elements to be embellished operators:
+  // * one of the elements msub, msup, msubsup, munder, mover, munderover,
+  //   mmultiscripts, mfrac, or semantics (Section 5.1 Annotation Framework),
+  //   whose first argument exists and is an embellished operator; 
+  //
+  // If our first child is an embellished operator, its flags bubble to us
+  mPresentationData.baseFrame = mFrames.FirstChild();
+  GetEmbellishDataFrom(mPresentationData.baseFrame, mEmbellishData);
+
+  return NS_OK;
+}