third_party/WebKit/Source/core/html/HTMLAllCollection.cpp

/*
 * Copyright (C) 2009, 2011, 2012 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
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#include "core/html/HTMLAllCollection.h"

#include "bindings/core/v8/NodeListOrElement.h"
#include "core/dom/Element.h"
#include "core/dom/StaticNodeList.h"

namespace blink {

HTMLAllCollection* HTMLAllCollection::create(ContainerNode& node,
                                             CollectionType type) {
  DCHECK_EQ(type, DocAll);
  return new HTMLAllCollection(node);
}

HTMLAllCollection::HTMLAllCollection(ContainerNode& node)
    : HTMLCollection(node, DocAll, DoesNotOverrideItemAfter) {}

HTMLAllCollection::~HTMLAllCollection() {}

Element* HTMLAllCollection::namedItemWithIndex(const AtomicString& name,
                                               unsigned index) const {
  updateIdNameCache();

  const NamedItemCache& cache = namedItemCache();
  if (HeapVector<Member<Element>>* elements = cache.getElementsById(name)) {
    if (index < elements->size())
      return elements->at(index);
    index -= elements->size();
  }

  if (HeapVector<Member<Element>>* elements = cache.getElementsByName(name)) {
    if (index < elements->size())
      return elements->at(index);
  }

  return 0;
}

void HTMLAllCollection::namedGetter(const AtomicString& name,
                                    NodeListOrElement& returnValue) {
  HeapVector<Member<Element>> namedItems;
  this->namedItems(name, namedItems);

  if (!namedItems.size())
    return;

  if (namedItems.size() == 1) {
    returnValue.setElement(namedItems.at(0));
    return;
  }

  // FIXME: HTML5 specification says this should be a HTMLCollection.
  // http://www.whatwg.org/specs/web-apps/current-work/multipage/common-dom-interfaces.html#htmlallcollection
  returnValue.setNodeList(StaticElementList::adopt(namedItems));
}

}  // namespace blink