Introduce isHTMLTableElement and toHTMLTableElement

Source/core/html/HTMLFormElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 23 matching lines @@
 #include "core/dom/Document.h"
 #include "core/dom/Event.h"
 #include "core/dom/EventNames.h"
 #include "core/dom/NamedNodesCollection.h"
 #include "core/dom/NodeRenderingContext.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/html/FormController.h"
 #include "core/html/HTMLCollection.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/html/HTMLInputElement.h"
+#include "core/html/HTMLTableElement.h"
 #include "core/loader/FormState.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "core/page/Frame.h"
 #include "core/page/UseCounter.h"
 #include "core/rendering/RenderTextControl.h"
 
 using namespace std;
 
 namespace WebCore {
@@ skipping 43 matching lines @@
 }
 
 bool HTMLFormElement::rendererIsNeeded(const NodeRenderingContext& context)
 {
     if (!m_wasDemoted)
         return HTMLElement::rendererIsNeeded(context);
 
     ContainerNode* node = parentNode();
     RenderObject* parentRenderer = node->renderer();
     // FIXME: Shouldn't we also check for table caption (see |formIsTablePart| below).
-    bool parentIsTableElementPart = (parentRenderer->isTable() && node->hasTagName(tableTag))
+    bool parentIsTableElementPart = (parentRenderer->isTable() && isHTMLTableElement(node))
         || (parentRenderer->isTableRow() && node->hasTagName(trTag))
         || (parentRenderer->isTableSection() && node->hasTagName(tbodyTag))
         || (parentRenderer->isRenderTableCol() && node->hasTagName(colTag))
         || (parentRenderer->isTableCell() && node->hasTagName(trTag));
 
     if (!parentIsTableElementPart)
         return true;
 
     EDisplay display = context.style()->display();
     bool formIsTablePart = display == TABLE || display == INLINE_TABLE || display == TABLE_ROW_GROUP
@@ skipping 616 matching lines @@
 }
 
 void HTMLFormElement::setDemoted(bool demoted)
 {
     if (demoted)
         UseCounter::count(document(), UseCounter::DemotedFormElement);
     m_wasDemoted = demoted;
 }
 
 } // namespace