[Editing][CodeHealth] Make Node::rootEditableElement static

third_party/WebKit/Source/core/dom/Node.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, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1089 matching lines @@
     return toElement(parent);
 }
 
 ContainerNode* Node::parentOrShadowHostOrTemplateHostNode() const
 {
     if (isDocumentFragment() && toDocumentFragment(this)->isTemplateContent())
         return static_cast<const TemplateContentDocumentFragment*>(this)->host();
     return parentOrShadowHostNode();
 }
 
-bool Node::isRootEditableElement() const
+// TODO(yoichio): Move to core/editing
+bool isRootEditableElement(const Node& node)
 {
-    return hasEditableStyle() && isElementNode() && (!parentNode() || !parentNode()->hasEditableStyle()
-        || !parentNode()->isElementNode() || this == document().body());
+    return node.hasEditableStyle() && node.isElementNode() && (!node.parentNode() || !node.parentNode()->hasEditableStyle()
+        || !node.parentNode()->isElementNode() || &node == node.document().body());
 }
 
-Element* Node::rootEditableElement(EditableType editableType) const
+// TODO(yoichio): Move to core/editing
+Element* rootEditableElement(const Node& node, EditableType editableType)
 {
     if (editableType == HasEditableAXRole) {
-        if (AXObjectCache* cache = document().existingAXObjectCache())
-            return const_cast<Element*>(cache->rootAXEditableElement(this));
+        if (AXObjectCache* cache = node.document().existingAXObjectCache())
+            return const_cast<Element*>(cache->rootAXEditableElement(&node));
     }
 
-    return rootEditableElement();
+    return rootEditableElement(node);
 }
 
-Element* Node::rootEditableElement() const
+// TODO(yoichio): Move to core/editing
+Element* rootEditableElement(const Node& node)
 {
     const Node* result = nullptr;
-    for (const Node* n = this; n && n->hasEditableStyle(); n = n->parentNode()) {
+    for (const Node* n = &node; n && n->hasEditableStyle(); n = n->parentNode()) {
         if (n->isElementNode())
             result = n;
-        if (document().body() == n)
+        if (node.document().body() == n)
             break;
     }
     return toElement(const_cast<Node*>(result));
 }
 
 // FIXME: End of obviously misplaced HTML editing functions.  Try to move these out of Node.
 
 Document* Node::ownerDocument() const
 {
     Document* doc = &document();
@@ skipping 1358 matching lines @@
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
     else
         fprintf(stderr, "Cannot showNodePath for (nil)\n");
 }
 
 #endif