Display MathML fallback content when it is specified and take into account inline/display modes for…

Source/core/css/mathml.css

Index: Source/core/css/mathml.css
diff --git a/Source/core/dom/ClientRectList.cpp b/Source/core/css/mathml.css
similarity index 50%
copy from Source/core/dom/ClientRectList.cpp
copy to Source/core/css/mathml.css
index c7d054c15940db63259a892d68e63217259a9df5..cef10e3f7b0cc95d86a0093dadf38f535128eb75 100644
--- a/Source/core/dom/ClientRectList.cpp
+++ b/Source/core/css/mathml.css
@@ -1,5 +1,7 @@
 /*
- * Copyright (C) 2009 Apple Inc. All Rights Reserved.
+ * The default style sheet used to render MathML.
+ *
+ * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -21,47 +23,27 @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
  */
 
-#include "config.h"
-#include "core/dom/ClientRectList.h"
-
-#include "core/dom/ClientRect.h"
-
-namespace WebCore {
+@namespace "http://www.w3.org/1998/Math/MathML";
 
-ClientRectList::ClientRectList()
-{
-    ScriptWrappable::init(this);
+/* By default, we only display the MathML formulas without any formatting other than the one specified by the display attribute. */
+math {
+    display: inline;
 }
 
-ClientRectList::ClientRectList(const Vector<FloatQuad>& quads)
-{
-    ScriptWrappable::init(this);
-    m_list.reserveInitialCapacity(quads.size());
-    for (size_t i = 0; i < quads.size(); ++i)
-        m_list.append(ClientRect::create(quads[i].enclosingBoundingBox()));
+math[display="block"] {
+    display: block;
+    text-align: center;
 }
 
-ClientRectList::~ClientRectList()
-{
+/* We hide the PresentationExpression constructions that are children of a <semantics> element.
+   http://www.w3.org/TR/MathML/appendixa.html#parsing_PresentationExpression */
+semantics > mi, semantics > mn, semantics > mo, semantics > mtext, semantics > mspace, semantics > ms, semantics > maligngroup, semantics > malignmark, semantics > mrow, semantics > mfrac, semantics > msqrt, semantics > mroot, semantics > mstyle, semantics > merror, semantics > mpadded, semantics > mphantom, semantics > mfenced, semantics > menclose, semantics > msub, semantics > msup, semantics > msubsup, semantics > munder, semantics > mover, semantics > munderover, semantics > mmultiscripts, semantics > mtable, semantics > mstack, semantics > mlongdiv, semantics > maction {
+    display: none;
 }
 
-unsigned ClientRectList::length() const
-{
-    return m_list.size();
+/* However, we display all the annotations. */
+annotation, annotation-xml {
+    display: inline-block;
 }
-
-ClientRect* ClientRectList::item(unsigned index)
-{
-    if (index >= m_list.size()) {
-        // FIXME: this should throw an exception.
-        // ec = IndexSizeError;
-        return 0;
-    }
-
-    return m_list[index].get();
-}
-
-} // namespace WebCore