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

   1 /*
   2  * Copyright (C) 2009, 2011, 2012 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "core/html/HTMLAllCollection.h"
  28
  29 #include "bindings/core/v8/UnionTypesCore.h"
  30 #include "core/dom/Element.h"
  31 #include "core/dom/StaticNodeList.h"
  32
  33 namespace blink {
  34
  35 PassRefPtrWillBeRawPtr<HTMLAllCollection> HTMLAllCollection::create(ContainerNode& node, CollectionType type)
  36 {
  37     ASSERT_UNUSED(type, type == DocAll);
  38     return adoptRefWillBeNoop(new HTMLAllCollection(node));
  39 }
  40
  41 HTMLAllCollection::HTMLAllCollection(ContainerNode& node)
  42     : HTMLCollection(node, DocAll, DoesNotOverrideItemAfter)
  43 {
  44 }
  45
  46 HTMLAllCollection::~HTMLAllCollection()
  47 {
  48 }
  49
  50 Element* HTMLAllCollection::namedItemWithIndex(const AtomicString& name, unsigned index) const
  51 {
  52     updateIdNameCache();
  53
  54     const NamedItemCache& cache = namedItemCache();
  55     if (WillBeHeapVector<RawPtrWillBeMember<Element>>* elements = cache.getElementsById(name)) {
  56         if (index < elements->size())
  57             return elements->at(index);
  58         index -= elements->size();
  59     }
  60
  61     if (WillBeHeapVector<RawPtrWillBeMember<Element>>* elements = cache.getElementsByName(name)) {
  62         if (index < elements->size())
  63             return elements->at(index);
  64     }
  65
  66     return 0;
  67 }
  68
  69 void HTMLAllCollection::namedGetter(const AtomicString& name, NodeListOrElement& returnValue)
  70 {
  71     WillBeHeapVector<RefPtrWillBeMember<Element>> namedItems;
  72     this->namedItems(name, namedItems);
  73
  74     if (!namedItems.size())
  75         return;
  76
  77     if (namedItems.size() == 1) {
  78         returnValue.setElement(namedItems.at(0));
  79         return;
  80     }
  81
  82     // FIXME: HTML5 specification says this should be a HTMLCollection.
  83     // http://www.whatwg.org/specs/web-apps/current-work/multipage/common-dom-interfaces.html#htmlallcollection
  84     returnValue.setNodeList(StaticElementList::adopt(namedItems));
  85 }
  86
  87 } // namespace blink