blob: 054ef127fc22bbfded120002e8aaa880d44ee669 [file] [log] [blame]
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004-2017 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 "HTMLLegendElement.h"
#include "ElementIterator.h"
#include "HTMLFieldSetElement.h"
#include "HTMLNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLLegendElement);
inline HTMLLegendElement::HTMLLegendElement(const QualifiedName& tagName, Document& document)
: HTMLElement(tagName, document)
{
ASSERT(hasTagName(HTMLNames::legendTag));
}
Ref<HTMLLegendElement> HTMLLegendElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new HTMLLegendElement(tagName, document));
}
RefPtr<HTMLFormControlElement> HTMLLegendElement::associatedControl()
{
// Check if there's a fieldset belonging to this legend.
auto enclosingFieldset = ancestorsOfType<HTMLFieldSetElement>(*this).first();
if (!enclosingFieldset)
return nullptr;
// Find first form element inside the fieldset that is not a legend element.
// FIXME: Should we consider tabindex?
return descendantsOfType<HTMLFormControlElement>(*enclosingFieldset).first();
}
void HTMLLegendElement::focus(bool restorePreviousSelection, FocusDirection direction)
{
if (document().haveStylesheetsLoaded()) {
document().updateLayoutIgnorePendingStylesheets();
if (isFocusable()) {
Element::focus(restorePreviousSelection, direction);
return;
}
}
// To match other browsers' behavior, never restore previous selection.
if (auto control = associatedControl())
control->focus(false, direction);
}
void HTMLLegendElement::accessKeyAction(bool sendMouseEvents)
{
if (auto control = associatedControl())
control->accessKeyAction(sendMouseEvents);
}
HTMLFormElement* HTMLLegendElement::form() const
{
// According to the specification, If the legend has a fieldset element as
// its parent, then the form attribute must return the same value as the
// form attribute on that fieldset element. Otherwise, it must return null.
auto fieldset = makeRefPtr(parentNode());
if (!is<HTMLFieldSetElement>(fieldset))
return nullptr;
return downcast<HTMLFieldSetElement>(*fieldset).form();
}
} // namespace