Clean up child checks in ContainerNode.

sky/engine/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 1660 matching lines @@
 
     HitTestResult result(documentPoint);
     renderView()->hitTest(request, result);
 
     if (!request.readOnly())
         updateHoverActiveState(request, result.innerElement(), &event);
 
     return MouseEventWithHitTestResults(event, result);
 }
 
-// DOM Section 1.1.1
-bool Document::childTypeAllowed(NodeType type) const
-{
-    switch (type) {
-    case DOCUMENT_FRAGMENT_NODE:
-    case DOCUMENT_NODE:
-    case TEXT_NODE:
-        return false;
-    case ELEMENT_NODE:
-        // Documents may contain no more than one of each of these.
-        // (One Element and one DocumentType.)
-        for (Node* c = firstChild(); c; c = c->nextSibling())
-            if (c->nodeType() == type)
-                return false;
-        return true;
-    }
-    return false;
-}
-
-bool Document::canReplaceChild(const Node& newChild, const Node& oldChild) const
-{
-    if (oldChild.nodeType() == newChild.nodeType())
-        return true;
-
-    int numElements = 0;
-
-    // First, check how many doctypes and elements we have, not counting
-    // the child we're about to remove.
-    for (Node* c = firstChild(); c; c = c->nextSibling()) {
-        if (c == oldChild)
-            continue;
-
-        switch (c->nodeType()) {
-        case ELEMENT_NODE:
-            numElements++;
-            break;
-        default:
-            break;
-        }
-    }
-
-    // Then, see how many doctypes and elements might be added by the new child.
-    if (newChild.isDocumentFragment()) {
-        for (Node* c = toDocumentFragment(newChild).firstChild(); c; c = c->nextSibling()) {
-            switch (c->nodeType()) {
-            case DOCUMENT_FRAGMENT_NODE:
-            case DOCUMENT_NODE:
-            case TEXT_NODE:
-                return false;
-            case ELEMENT_NODE:
-                numElements++;
-                break;
-            }
-        }
-    } else {
-        switch (newChild.nodeType()) {
-        case DOCUMENT_FRAGMENT_NODE:
-        case DOCUMENT_NODE:
-        case TEXT_NODE:
-            return false;
-        case ELEMENT_NODE:
-            numElements++;
-            break;
-        }
-    }
-
-    if (numElements > 1)
-        return false;
-
-    return true;
-}
-
 PassRefPtr<Node> Document::cloneNode(bool deep)
 {
     RefPtr<Document> clone = cloneDocumentWithoutChildren();
     if (deep)
         cloneChildNodes(clone.get());
     return clone.release();
 }
 
 PassRefPtr<Document> Document::cloneDocumentWithoutChildren()
 {
@@ skipping 1142 matching lines @@
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (WeakDocumentSet::const_iterator it = set.begin(); it != set.end(); ++it) {
         fprintf(stderr, "- Document %p URL: %s\n", *it, (*it)->url().string().utf8().data());
     }
 }
 #endif