root/Source/core/html/HTMLButtonElement.cpp

DEFINITIONS

1. m_isActivatedSubmit
2. create
3. setType
4. createRenderer
5. formControlType
6. isPresentationAttribute
7. parseAttribute
8. defaultEventHandler
9. willRespondToMouseClickEvents
10. canBeSuccessfulSubmitButton
11. isActivatedSubmit
12. setActivatedSubmit
13. appendFormData
14. accessKeyAction
15. isURLAttribute
16. value
17. recalcWillValidate
18. isInteractiveContent
19. supportsAutofocus

/*
 * 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, 2007, 2010 Apple Inc. All rights reserved.
 *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
 * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
 *
 * 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 "core/html/HTMLButtonElement.h"

#include "HTMLNames.h"
#include "core/dom/Attribute.h"
#include "core/events/KeyboardEvent.h"
#include "core/html/FormDataList.h"
#include "core/html/HTMLFormElement.h"
#include "core/rendering/RenderButton.h"
#include "wtf/StdLibExtras.h"

namespace WebCore {

using namespace HTMLNames;

inline HTMLButtonElement::HTMLButtonElement(Document& document, HTMLFormElement* form)
    : HTMLFormControlElement(buttonTag, document, form)
    , m_type(SUBMIT)
    , m_isActivatedSubmit(false)
{
    ScriptWrappable::init(this);
}

PassRefPtr<HTMLButtonElement> HTMLButtonElement::create(Document& document, HTMLFormElement* form)
{
    return adoptRef(new HTMLButtonElement(document, form));
}

void HTMLButtonElement::setType(const AtomicString& type)
{
    setAttribute(typeAttr, type);
}

RenderObject* HTMLButtonElement::createRenderer(RenderStyle*)
{
    return new RenderButton(this);
}

const AtomicString& HTMLButtonElement::formControlType() const
{
    switch (m_type) {
        case SUBMIT: {
            DEFINE_STATIC_LOCAL(const AtomicString, submit, ("submit", AtomicString::ConstructFromLiteral));
            return submit;
        }
        case BUTTON: {
            DEFINE_STATIC_LOCAL(const AtomicString, button, ("button", AtomicString::ConstructFromLiteral));
            return button;
        }
        case RESET: {
            DEFINE_STATIC_LOCAL(const AtomicString, reset, ("reset", AtomicString::ConstructFromLiteral));
            return reset;
        }
    }

    ASSERT_NOT_REACHED();
    return emptyAtom;
}

bool HTMLButtonElement::isPresentationAttribute(const QualifiedName& name) const
{
    if (name == alignAttr) {
        // Don't map 'align' attribute.  This matches what Firefox and IE do, but not Opera.
        // See http://bugs.webkit.org/show_bug.cgi?id=12071
        return false;
    }

    return HTMLFormControlElement::isPresentationAttribute(name);
}

void HTMLButtonElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
    if (name == typeAttr) {
        if (equalIgnoringCase(value, "reset"))
            m_type = RESET;
        else if (equalIgnoringCase(value, "button"))
            m_type = BUTTON;
        else
            m_type = SUBMIT;
        setNeedsWillValidateCheck();
    } else
        HTMLFormControlElement::parseAttribute(name, value);
}

void HTMLButtonElement::defaultEventHandler(Event* event)
{
    if (event->type() == EventTypeNames::DOMActivate && !isDisabledFormControl()) {
        if (form() && m_type == SUBMIT) {
            m_isActivatedSubmit = true;
            form()->prepareForSubmission(event);
            event->setDefaultHandled();
            m_isActivatedSubmit = false; // Do this in case submission was canceled.
        }
        if (form() && m_type == RESET) {
            form()->reset();
            event->setDefaultHandled();
        }
    }

    if (event->isKeyboardEvent()) {
        if (event->type() == EventTypeNames::keydown && toKeyboardEvent(event)->keyIdentifier() == "U+0020") {
            setActive(true);
            // No setDefaultHandled() - IE dispatches a keypress in this case.
            return;
        }
        if (event->type() == EventTypeNames::keypress) {
            switch (toKeyboardEvent(event)->charCode()) {
                case '\r':
                    dispatchSimulatedClick(event);
                    event->setDefaultHandled();
                    return;
                case ' ':
                    // Prevent scrolling down the page.
                    event->setDefaultHandled();
                    return;
            }
        }
        if (event->type() == EventTypeNames::keyup && toKeyboardEvent(event)->keyIdentifier() == "U+0020") {
            if (active())
                dispatchSimulatedClick(event);
            event->setDefaultHandled();
            return;
        }
    }

    HTMLFormControlElement::defaultEventHandler(event);
}

bool HTMLButtonElement::willRespondToMouseClickEvents()
{
    if (!isDisabledFormControl() && form() && (m_type == SUBMIT || m_type == RESET))
        return true;
    return HTMLFormControlElement::willRespondToMouseClickEvents();
}

bool HTMLButtonElement::canBeSuccessfulSubmitButton() const
{
    return m_type == SUBMIT;
}

bool HTMLButtonElement::isActivatedSubmit() const
{
    return m_isActivatedSubmit;
}

void HTMLButtonElement::setActivatedSubmit(bool flag)
{
    m_isActivatedSubmit = flag;
}

bool HTMLButtonElement::appendFormData(FormDataList& formData, bool)
{
    if (m_type != SUBMIT || name().isEmpty() || !m_isActivatedSubmit)
        return false;
    formData.appendData(name(), value());
    return true;
}

void HTMLButtonElement::accessKeyAction(bool sendMouseEvents)
{
    focus();

    dispatchSimulatedClick(0, sendMouseEvents ? SendMouseUpDownEvents : SendNoEvents);
}

bool HTMLButtonElement::isURLAttribute(const Attribute& attribute) const
{
    return attribute.name() == formactionAttr || HTMLFormControlElement::isURLAttribute(attribute);
}

const AtomicString& HTMLButtonElement::value() const
{
    return getAttribute(valueAttr);
}

bool HTMLButtonElement::recalcWillValidate() const
{
    return m_type == SUBMIT && HTMLFormControlElement::recalcWillValidate();
}

bool HTMLButtonElement::isInteractiveContent() const
{
    return true;
}

bool HTMLButtonElement::supportsAutofocus() const
{
    return true;
}

} // namespace