1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2000 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2004-2016 Apple Inc. All rights reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 *
22 */
23
24#pragma once
25
26#include "CachedHTMLCollection.h"
27#include "HTMLOptionElement.h"
28#include "HTMLSelectElement.h"
29
30namespace WebCore {
31
32class HTMLOptionsCollection final : public CachedHTMLCollection<HTMLOptionsCollection, CollectionTypeTraits<SelectOptions>::traversalType> {
33 WTF_MAKE_ISO_ALLOCATED(HTMLOptionsCollection);
34public:
35 using Base = CachedHTMLCollection<HTMLOptionsCollection, CollectionTypeTraits<SelectOptions>::traversalType>;
36
37 static Ref<HTMLOptionsCollection> create(HTMLSelectElement&, CollectionType);
38
39 HTMLSelectElement& selectElement() { return downcast<HTMLSelectElement>(ownerNode()); }
40 const HTMLSelectElement& selectElement() const { return downcast<HTMLSelectElement>(ownerNode()); }
41
42 HTMLOptionElement* item(unsigned offset) const final;
43 HTMLOptionElement* namedItem(const AtomicString& name) const final;
44
45 ExceptionOr<void> setItem(unsigned index, HTMLOptionElement*);
46
47 using OptionOrOptGroupElement = Variant<RefPtr<HTMLOptionElement>, RefPtr<HTMLOptGroupElement>>;
48 using HTMLElementOrInt = Variant<RefPtr<HTMLElement>, int>;
49 WEBCORE_EXPORT ExceptionOr<void> add(const OptionOrOptGroupElement&, const Optional<HTMLElementOrInt>& before);
50 WEBCORE_EXPORT void remove(int index);
51
52 WEBCORE_EXPORT int selectedIndex() const;
53 WEBCORE_EXPORT void setSelectedIndex(int);
54
55 WEBCORE_EXPORT ExceptionOr<void> setLength(unsigned);
56
57 // For CachedHTMLCollection.
58 bool elementMatches(Element&) const;
59
60private:
61 explicit HTMLOptionsCollection(HTMLSelectElement&);
62};
63
64inline HTMLOptionElement* HTMLOptionsCollection::item(unsigned offset) const
65{
66 return downcast<HTMLOptionElement>(Base::item(offset));
67}
68
69inline HTMLOptionElement* HTMLOptionsCollection::namedItem(const AtomicString& name) const
70{
71 return downcast<HTMLOptionElement>(Base::namedItem(name));
72}
73
74inline ExceptionOr<void> HTMLOptionsCollection::setItem(unsigned index, HTMLOptionElement* optionElement)
75{
76 return selectElement().setItem(index, optionElement);
77}
78
79inline bool HTMLOptionsCollection::elementMatches(Element& element) const
80{
81 if (!element.hasTagName(HTMLNames::optionTag))
82 return false;
83
84 if (element.parentNode() == &selectElement())
85 return true;
86
87 ASSERT(element.parentNode());
88 return element.parentNode()->hasTagName(HTMLNames::optgroupTag) && element.parentNode()->parentNode() == &selectElement();
89}
90
91} // namespace WebCore
92
93SPECIALIZE_TYPE_TRAITS_HTMLCOLLECTION(HTMLOptionsCollection, SelectOptions)
94