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