Introduce isHTMLHtmlElement and toHTMLHtmlElement

Source/core/page/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 19 matching lines @@
 #include "HTMLNames.h"
 #include "RuntimeEnabledFeatures.h"
 #include "core/accessibility/AXObjectCache.h"
 #include "core/animation/DocumentTimeline.h"
 #include "core/css/FontLoader.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/DocumentMarkerController.h"
 #include "core/dom/OverflowEvent.h"
 #include "core/editing/FrameSelection.h"
 #include "core/html/HTMLFrameElement.h"
+#include "core/html/HTMLHtmlElement.h"
 #include "core/html/HTMLPlugInImageElement.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "core/loader/TextResourceDecoder.h"
 #include "core/loader/cache/CachedResourceLoader.h"
 #include "core/page/Chrome.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/EventHandler.h"
 #include "core/page/FocusController.h"
@@ skipping 558 matching lines @@
 
 void FrameView::applyPaginationToViewport()
 {
     Document* document = m_frame->document();
     Node* documentElement = document->documentElement();
     RenderObject* documentRenderer = documentElement ? documentElement->renderer() : 0;
     RenderObject* documentOrBodyRenderer = documentRenderer;
     Node* body = document->body();
     if (body && body->renderer()) {
         if (body->hasTagName(bodyTag))
-            documentOrBodyRenderer = documentRenderer->style()->overflowX() == OVISIBLE && documentElement->hasTagName(htmlTag) ? body->renderer() : documentRenderer;
+            documentOrBodyRenderer = documentRenderer->style()->overflowX() == OVISIBLE && isHTMLHtmlElement(documentElement) ? body->renderer() : documentRenderer;
     }
 
     Pagination pagination;
 
     if (!documentOrBodyRenderer) {
         setPagination(pagination);
         return;
     }
 
     EOverflow overflowY = documentOrBodyRenderer->style()->overflowY();
@@ skipping 33 matching lines @@
         Node* documentElement = document->documentElement();
         RenderObject* rootRenderer = documentElement ? documentElement->renderer() : 0;
         Node* body = document->body();
         if (body && body->renderer()) {
             if (body->hasTagName(framesetTag)) {
                 vMode = ScrollbarAlwaysOff;
                 hMode = ScrollbarAlwaysOff;
             } else if (body->hasTagName(bodyTag)) {
                 // It's sufficient to just check the X overflow,
                 // since it's illegal to have visible in only one direction.
-                RenderObject* o = rootRenderer->style()->overflowX() == OVISIBLE && document->documentElement()->hasTagName(htmlTag) ? body->renderer() : rootRenderer;
+                RenderObject* o = rootRenderer->style()->overflowX() == OVISIBLE && isHTMLHtmlElement(document->documentElement()) ? body->renderer() : rootRenderer;
                 applyOverflowToViewport(o, hMode, vMode);
             }
         } else if (rootRenderer)
             applyOverflowToViewport(rootRenderer, hMode, vMode);
     }
 }
 
 void FrameView::updateCompositingLayersAfterStyleChange()
 {
     RenderView* renderView = this->renderView();
@@ skipping 2707 matching lines @@
 }
 
 AXObjectCache* FrameView::axObjectCache() const
 {
     if (frame() && frame()->document())
         return frame()->document()->existingAXObjectCache();
     return 0;
 }
 
 } // namespace WebCore