Introduce NodeTraversal::ancestorsOf() and inclusiveAncestors() for range-based for loop

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 446 matching lines @@
 
 bool Node::hasEditableStyle(EditableLevel editableLevel, UserSelectAllTreatment treatment) const
 {
     if (isPseudoElement())
         return false;
 
     // Ideally we'd call DCHECK(!needsStyleRecalc()) here, but
     // ContainerNode::setFocus() calls setNeedsStyleRecalc(), so the assertion
     // would fire in the middle of Document::setFocusedNode().
 
-    for (const Node* node = this; node; node = node->parentNode()) {
-        if ((node->isHTMLElement() || node->isDocumentNode()) && node->layoutObject()) {
+    for (const Node& node : NodeTraversal::inclusiveAncestorsOf(*this)) {
+        if ((node.isHTMLElement() || node.isDocumentNode()) && node.layoutObject()) {
             // Elements with user-select: all style are considered atomic
             // therefore non editable.
-            if (nodeIsUserSelectAll(node) && treatment == UserSelectAllIsAlwaysNonEditable)
+            if (nodeIsUserSelectAll(&node) && treatment == UserSelectAllIsAlwaysNonEditable)
                 return false;
-            switch (node->layoutObject()->style()->userModify()) {
+            switch (node.layoutObject()->style()->userModify()) {
             case READ_ONLY:
                 return false;
             case READ_WRITE:
                 return true;
             case READ_WRITE_PLAINTEXT_ONLY:
                 return editableLevel != RichlyEditable;
             }
             ASSERT_NOT_REACHED();
             return false;
         }
@@ skipping 1848 matching lines @@
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
     else
         fprintf(stderr, "Cannot showNodePath for (nil)\n");
 }
 
 #endif