Move Node::isBlockFlowElement() to htmlediting.h

Source/core/editing/htmlediting.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 318 matching lines @@
 // block that contains the table and not the table, and this function should be the only one responsible for
 // knowing about these kinds of special cases.
 Element* enclosingBlock(Node* node, EditingBoundaryCrossingRule rule)
 {
     Node* enclosingNode = enclosingNodeOfType(firstPositionInOrBeforeNode(node), isBlock, rule);
     return enclosingNode && enclosingNode->isElementNode() ? toElement(enclosingNode) : 0;
 }
 
 Element* enclosingBlockFlowElement(Node& node)
 {
-    if (node.isBlockFlowElement())
+    if (isBlockFlowElement(node))
         return &toElement(node);
 
     for (Node* n = node.parentNode(); n; n = n->parentNode()) {
-        if (n->isBlockFlowElement() || isHTMLBodyElement(*n))
+        if (isBlockFlowElement(*n) || isHTMLBodyElement(*n))
             return toElement(n);
     }
     return 0;
 }
 
 bool inSameContainingBlockFlowElement(Node* a, Node* b)
 {
     return a && b && enclosingBlockFlowElement(*a) == enclosingBlockFlowElement(*b);
 }
 
@@ skipping 838 matching lines @@
         || element.hasTagName(tableTag)
         || element.hasTagName(ulTag)
         || element.hasTagName(xmpTag)
         || element.hasTagName(h1Tag)
         || element.hasTagName(h2Tag)
         || element.hasTagName(h3Tag)
         || element.hasTagName(h4Tag)
         || element.hasTagName(h5Tag);
 }
 
+bool isBlockFlowElement(const Node& node)
+{
+    RenderObject* renderer = node.renderer();
+    return node.isElementNode() && renderer && renderer->isRenderBlockFlow();
+}
+
 Position adjustedSelectionStartForStyleComputation(const VisibleSelection& selection)
 {
     // This function is used by range style computations to avoid bugs like:
     // <rdar://problem/4017641> REGRESSION (Mail): you can only bold/unbold a selection starting from end of line once
     // It is important to skip certain irrelevant content at the start of the selection, so we do not wind up
     // with a spurious "mixed" style.
 
     VisiblePosition visiblePosition(selection.start());
     if (visiblePosition.isNull())
         return Position();
 
     // if the selection is a caret, just return the position, since the style
     // behind us is relevant
     if (selection.isCaret())
         return visiblePosition.deepEquivalent();
 
     // if the selection starts just before a paragraph break, skip over it
     if (isEndOfParagraph(visiblePosition))
         return visiblePosition.next().deepEquivalent().downstream();
 
     // otherwise, make sure to be at the start of the first selected node,
     // instead of possibly at the end of the last node before the selection
     return visiblePosition.deepEquivalent().downstream();
 }
 
 } // namespace blink