htmllegendelement.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 1999 Lars Knoll ([e-mail])
 *           (C) 1999 Antti Koivisto ([e-mail])
 *           (C) 2001 Dirk Mueller ([e-mail])
 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
 *           (C) 2006 Alexey Proskuryakov ([e-mail])
 *
 * 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 "HTMLNames.h"
#include <wtf/StdLibExtras.h>

namespace WebCore {

using namespace HTMLNames;

HTMLLegendElement::HTMLLegendElement(const QualifiedName& tagName, Document *doc, HTMLFormElement *f)
    : HTMLFormControlElement(tagName, doc, f)
{
    ASSERT(hasTagName(legendTag));
}

HTMLLegendElement::~HTMLLegendElement()
{
}

bool HTMLLegendElement::isFocusable() const
{
    return HTMLElement::isFocusable();
}

const AtomicString& HTMLLegendElement::type() const
{
    DEFINE_STATIC_LOCAL(const AtomicString, legend, ("legend"));
    return legend;
}

String HTMLLegendElement::accessKey() const
{
    return getAttribute(accesskeyAttr);
}

void HTMLLegendElement::setAccessKey(const String &value)
{
    setAttribute(accesskeyAttr, value);
}

String HTMLLegendElement::align() const
{
    return getAttribute(alignAttr);
}

void HTMLLegendElement::setAlign(const String &value)
{
    setAttribute(alignAttr, value);
}

Element *HTMLLegendElement::formElement()
{
    // Check if there's a fieldset belonging to this legend.
    Node *fieldset = parentNode();
    while (fieldset && !fieldset->hasTagName(fieldsetTag))
        fieldset = fieldset->parentNode();
    if (!fieldset)
        return 0;

    // Find first form element inside the fieldset.
    // FIXME: Should we care about tabindex?
    Node *node = fieldset;
    while ((node = node->traverseNextNode(fieldset))) {
        if (node->isHTMLElement()) {
            HTMLElement *element = static_cast<HTMLElement *>(node);
            if (!element->hasLocalName(legendTag) && element->isFormControlElement())
                return element;
        }
    }

    return 0;
}

void HTMLLegendElement::focus(bool)
{
    if (isFocusable())
        Element::focus();
        
    // to match other browsers, never restore previous selection
    if (Element *element = formElement())
        element->focus(false);
}

void HTMLLegendElement::accessKeyAction(bool sendToAnyElement)
{
    if (Element *element = formElement())
        element->accessKeyAction(sendToAnyElement);
}
    
} // namespace