Adapt to changes in html5 spec related to tfoot

third_party/WebKit/Source/core/html/HTMLTableElement.cpp

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 90 matching lines @@
     insertBefore(newHead, child, exceptionState);
 }
 
 HTMLTableSectionElement* HTMLTableElement::tFoot() const
 {
     return toHTMLTableSectionElement(Traversal<HTMLElement>::firstChild(*this, HasHTMLTagName(tfootTag)));
 }
 
 void HTMLTableElement::setTFoot(HTMLTableSectionElement* newFoot, ExceptionState& exceptionState)
 {
+    if (newFoot && !newFoot->hasTagName(tfootTag)) {
+        exceptionState.throwDOMException(HierarchyRequestError, "Not a tfoot element.");
+        return;
+    }
+
     deleteTFoot();
 
-    HTMLElement* child;
-    for (child = Traversal<HTMLElement>::firstChild(*this); child; child = Traversal<HTMLElement>::nextSibling(*child)) {
-        if (!child->hasTagName(captionTag) && !child->hasTagName(colgroupTag) && !child->hasTagName(theadTag))
-            break;
-    }
-
-    insertBefore(newFoot, child, exceptionState);
+    if (newFoot)
+        appendChild(newFoot, exceptionState);
 }
 
 HTMLTableSectionElement* HTMLTableElement::createTHead()
 {
     if (HTMLTableSectionElement* existingHead = tHead())
         return existingHead;
     HTMLTableSectionElement* head = HTMLTableSectionElement::create(theadTag, document());
     setTHead(head, IGNORE_EXCEPTION);
     return head;
 }
@@ skipping 429 matching lines @@
     return getAttribute(summaryAttr);
 }
 
 DEFINE_TRACE(HTMLTableElement)
 {
     visitor->trace(m_sharedCellStyle);
     HTMLElement::trace(visitor);
 }
 
 } // namespace blink