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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
* (C) 2006 Alexey Proskuryakov (ap@nypop.com)
*
* 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 "HTMLFieldSetElement.h"
#include "HTMLCollection.h"
#include "HTMLLegendElement.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"
#include "NodeTraversal.h"
#include "RenderFieldset.h"
#include <wtf/StdLibExtras.h>
namespace WebCore {
using namespace HTMLNames;
inline HTMLFieldSetElement::HTMLFieldSetElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
: HTMLFormControlElement(tagName, document, form)
, m_documentVersion(0)
{
ASSERT(hasTagName(fieldsetTag));
}
PassRefPtr<HTMLFieldSetElement> HTMLFieldSetElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
{
return adoptRef(new HTMLFieldSetElement(tagName, document, form));
}
void HTMLFieldSetElement::invalidateDisabledStateUnder(Element* base)
{
for (Element* element = ElementTraversal::firstWithin(base); element; element = ElementTraversal::next(element, base)) {
if (element->isFormControlElement())
static_cast<HTMLFormControlElement*>(element)->ancestorDisabledStateWasChanged();
}
}
void HTMLFieldSetElement::disabledAttributeChanged()
{
// This element must be updated before the style of nodes in its subtree gets recalculated.
HTMLFormControlElement::disabledAttributeChanged();
invalidateDisabledStateUnder(this);
}
void HTMLFieldSetElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
HTMLFormControlElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
for (Element* element = ElementTraversal::firstWithin(this); element; element = ElementTraversal::nextSkippingChildren(element, this)) {
if (element->hasTagName(legendTag))
invalidateDisabledStateUnder(element);
}
}
bool HTMLFieldSetElement::supportsFocus() const
{
return HTMLElement::supportsFocus();
}
const AtomicString& HTMLFieldSetElement::formControlType() const
{
DEFINE_STATIC_LOCAL(const AtomicString, fieldset, ("fieldset", AtomicString::ConstructFromLiteral));
return fieldset;
}
RenderObject* HTMLFieldSetElement::createRenderer(RenderArena* arena, RenderStyle*)
{
return new (arena) RenderFieldset(this);
}
HTMLLegendElement* HTMLFieldSetElement::legend() const
{
for (Element* child = ElementTraversal::firstWithin(this); child; child = ElementTraversal::nextSkippingChildren(child, this)) {
if (child->hasTagName(legendTag))
return static_cast<HTMLLegendElement*>(child);
}
return 0;
}
PassRefPtr<HTMLCollection> HTMLFieldSetElement::elements()
{
return ensureCachedHTMLCollection(FormControls);
}
void HTMLFieldSetElement::refreshElementsIfNeeded() const
{
uint64_t docVersion = document()->domTreeVersion();
if (m_documentVersion == docVersion)
return;
m_documentVersion = docVersion;
m_associatedElements.clear();
for (Element* element = ElementTraversal::firstWithin(this); element; element = ElementTraversal::next(element, this)) {
if (element->hasTagName(objectTag)) {
m_associatedElements.append(static_cast<HTMLObjectElement*>(element));
continue;
}
if (!element->isFormControlElement())
continue;
m_associatedElements.append(static_cast<HTMLFormControlElement*>(element));
}
}
const Vector<FormAssociatedElement*>& HTMLFieldSetElement::associatedElements() const
{
refreshElementsIfNeeded();
return m_associatedElements;
}
unsigned HTMLFieldSetElement::length() const
{
refreshElementsIfNeeded();
unsigned len = 0;
for (unsigned i = 0; i < m_associatedElements.size(); ++i)
if (m_associatedElements[i]->isEnumeratable())
++len;
return len;
}
} // namespace
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