164 lines
5.7 KiB
C++
164 lines
5.7 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010, 2011, 2012 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include "config.h"
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#include "HTMLFormControlsCollection.h"
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#include "FormAssociatedElement.h"
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#include "HTMLFormElement.h"
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#include "HTMLImageElement.h"
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#include "HTMLNames.h"
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#include "ScriptDisallowedScope.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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using namespace HTMLNames;
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// Since the collections are to be "live", we have to do the
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// calculation every time if anything has changed.
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WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLFormControlsCollection);
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HTMLFormControlsCollection::HTMLFormControlsCollection(ContainerNode& ownerNode)
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: CachedHTMLCollection(ownerNode, FormControls)
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, m_cachedElement(nullptr)
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, m_cachedElementOffsetInArray(0)
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{
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ASSERT(is<HTMLFormElement>(ownerNode));
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}
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Ref<HTMLFormControlsCollection> HTMLFormControlsCollection::create(ContainerNode& ownerNode, CollectionType)
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{
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return adoptRef(*new HTMLFormControlsCollection(ownerNode));
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}
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HTMLFormControlsCollection::~HTMLFormControlsCollection() = default;
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std::optional<Variant<RefPtr<RadioNodeList>, RefPtr<Element>>> HTMLFormControlsCollection::namedItemOrItems(const String& name) const
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{
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auto namedItems = this->namedItems(name);
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if (namedItems.isEmpty())
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return std::nullopt;
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if (namedItems.size() == 1)
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return Variant<RefPtr<RadioNodeList>, RefPtr<Element>> { RefPtr<Element> { WTFMove(namedItems[0]) } };
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return Variant<RefPtr<RadioNodeList>, RefPtr<Element>> { RefPtr<RadioNodeList> { ownerNode().radioNodeList(name) } };
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}
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static unsigned findFormAssociatedElement(const Vector<WeakPtr<HTMLElement>>& elements, const Element& element)
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{
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for (unsigned i = 0; i < elements.size(); ++i) {
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auto currentElement = makeRefPtr(elements[i].get());
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ASSERT(currentElement);
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auto* associatedElement = currentElement->asFormAssociatedElement();
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ASSERT(associatedElement);
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if (associatedElement->isEnumeratable() && currentElement == &element)
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return i;
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}
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return elements.size();
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}
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HTMLElement* HTMLFormControlsCollection::customElementAfter(Element* current) const
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{
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ScriptDisallowedScope::InMainThread scriptDisallowedScope;
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auto& elements = ownerNode().unsafeAssociatedElements();
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unsigned start;
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if (!current)
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start = 0;
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else if (m_cachedElement == current)
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start = m_cachedElementOffsetInArray + 1;
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else
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start = findFormAssociatedElement(elements, *current) + 1;
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for (unsigned i = start; i < elements.size(); ++i) {
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auto element = makeRefPtr(elements[i].get());
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ASSERT(element);
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ASSERT(element->asFormAssociatedElement());
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if (element->asFormAssociatedElement()->isEnumeratable()) {
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m_cachedElement = element.get();
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m_cachedElementOffsetInArray = i;
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return element.get();
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}
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}
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return nullptr;
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}
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HTMLFormElement& HTMLFormControlsCollection::ownerNode() const
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{
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return downcast<HTMLFormElement>(CachedHTMLCollection::ownerNode());
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}
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void HTMLFormControlsCollection::updateNamedElementCache() const
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{
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if (hasNamedElementCache())
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return;
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auto cache = makeUnique<CollectionNamedElementCache>();
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HashSet<AtomStringImpl*> foundInputElements;
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ScriptDisallowedScope::InMainThread scriptDisallowedScope;
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for (auto& weakElement : ownerNode().unsafeAssociatedElements()) {
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auto element = makeRefPtr(weakElement.get());
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ASSERT(element);
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auto* associatedElement = element->asFormAssociatedElement();
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ASSERT(associatedElement);
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if (associatedElement->isEnumeratable()) {
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const AtomString& id = element->getIdAttribute();
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if (!id.isEmpty()) {
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cache->appendToIdCache(id, *element);
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foundInputElements.add(id.impl());
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}
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const AtomString& name = element->getNameAttribute();
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if (!name.isEmpty() && id != name) {
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cache->appendToNameCache(name, *element);
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foundInputElements.add(name.impl());
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}
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}
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}
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for (auto& elementPtr : ownerNode().imageElements()) {
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if (!elementPtr)
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continue;
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HTMLImageElement& element = *elementPtr;
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const AtomString& id = element.getIdAttribute();
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if (!id.isEmpty() && !foundInputElements.contains(id.impl()))
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cache->appendToIdCache(id, element);
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const AtomString& name = element.getNameAttribute();
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if (!name.isEmpty() && id != name && !foundInputElements.contains(name.impl()))
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cache->appendToNameCache(name, element);
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}
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setNamedItemCache(WTFMove(cache));
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}
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void HTMLFormControlsCollection::invalidateCacheForDocument(Document& document)
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{
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CachedHTMLCollection::invalidateCacheForDocument(document);
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m_cachedElement = nullptr;
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m_cachedElementOffsetInArray = 0;
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}
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}
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