htmlformelement.cpp

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            RefPtr<FormData> data = createFormData(CString());
            if (isMailtoForm()) {
                String body = data->flattenToString();
                if (equalIgnoringCase(m_formDataBuilder.encodingType(), "text/plain")) {
                    // Convention seems to be to decode, and s/&/\r\n/. Also, spaces are encoded as %20.
                    body = decodeURLEscapeSequences(body.replace('&', "\r\n").replace('+', ' ') + "\r\n");
                }
                Vector<char> bodyData;
                bodyData.append("body=", 5);
                FormDataBuilder::encodeStringAsFormData(bodyData, body.utf8());
                data = FormData::create(String(bodyData.data(), bodyData.size()).replace('+', "%20").latin1());
            }
            frame->loader()->submitForm("POST", m_url, data, m_target, m_formDataBuilder.encodingType(), String(), event, lockHistory, lockBackForwardList);
        } else {
            Vector<char> boundary = m_formDataBuilder.generateUniqueBoundaryString();
            frame->loader()->submitForm("POST", m_url, createFormData(boundary.data()), m_target, m_formDataBuilder.encodingType(), boundary.data(), event, lockHistory, lockBackForwardList);
        }
    } else {
        m_formDataBuilder.setIsMultiPartForm(false);
        frame->loader()->submitForm("GET", m_url, createFormData(CString()), m_target, String(), String(), event, lockHistory, lockBackForwardList);
    }

    if (needButtonActivation && firstSuccessfulSubmitButton)
        firstSuccessfulSubmitButton->setActivatedSubmit(false);
    
    m_doingsubmit = m_insubmit = false;
}

void HTMLFormElement::reset()
{
    Frame* frame = document()->frame();
    if (m_inreset || !frame)
        return;

    m_inreset = true;

    // ### DOM2 labels this event as not cancelable, however
    // common browsers( sick! ) allow it be cancelled.
    if ( !dispatchEventForType(eventNames().resetEvent,true, true) ) {
        m_inreset = false;
        return;
    }

    for (unsigned i = 0; i < formElements.size(); ++i)
        formElements[i]->reset();

    m_inreset = false;
}

void HTMLFormElement::parseMappedAttribute(MappedAttribute* attr)
{
    if (attr->name() == actionAttr)
        m_url = parseURL(attr->value());
    else if (attr->name() == targetAttr)
        m_target = attr->value();
    else if (attr->name() == methodAttr)
        m_formDataBuilder.parseMethodType(attr->value());
    else if (attr->name() == enctypeAttr)
        m_formDataBuilder.parseEncodingType(attr->value());
    else if (attr->name() == accept_charsetAttr)
        // space separated list of charsets the server
        // accepts - see rfc2045
        m_formDataBuilder.setAcceptCharset(attr->value());
    else if (attr->name() == acceptAttr) {
        // ignore this one for the moment...
    } else if (attr->name() == autocompleteAttr) {
        m_autocomplete = !equalIgnoringCase(attr->value(), "off");
        if (!m_autocomplete)
            document()->registerForDocumentActivationCallbacks(this);    
        else
            document()->unregisterForDocumentActivationCallbacks(this);
    } else if (attr->name() == onsubmitAttr)
        setInlineEventListenerForTypeAndAttribute(eventNames().submitEvent, attr);
    else if (attr->name() == onresetAttr)
        setInlineEventListenerForTypeAndAttribute(eventNames().resetEvent, attr);
    else if (attr->name() == nameAttr) {
        const AtomicString& newName = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(newName);
        }
        m_name = newName;
    } else
        HTMLElement::parseMappedAttribute(attr);
}

template<class T, size_t n> static void removeFromVector(Vector<T*, n> & vec, T* item)
{
    size_t size = vec.size();
    for (size_t i = 0; i != size; ++i)
        if (vec[i] == item) {
            vec.remove(i);
            break;
        }
}

unsigned HTMLFormElement::formElementIndex(HTMLFormControlElement* e)
{
    // Check for the special case where this element is the very last thing in
    // the form's tree of children; we don't want to walk the entire tree in that
    // common case that occurs during parsing; instead we'll just return a value
    // that says "add this form element to the end of the array".
    if (e->traverseNextNode(this)) {
        unsigned i = 0;
        for (Node* node = this; node; node = node->traverseNextNode(this)) {
            if (node == e)
                return i;
            if (node->isHTMLElement()
                    && static_cast<Element*>(node)->isFormControlElement()
                    && static_cast<HTMLFormControlElement*>(node)->form() == this)
                ++i;
        }
    }
    return formElements.size();
}

void HTMLFormElement::registerFormElement(HTMLFormControlElement* e)
{
    document()->checkedRadioButtons().removeButton(e);
    m_checkedRadioButtons.addButton(e);
    formElements.insert(formElementIndex(e), e);
}

void HTMLFormElement::removeFormElement(HTMLFormControlElement* e)
{
    m_checkedRadioButtons.removeButton(e);
    removeFromVector(formElements, e);
}

bool HTMLFormElement::isURLAttribute(Attribute* attr) const
{
    return attr->name() == actionAttr;
}

void HTMLFormElement::registerImgElement(HTMLImageElement* e)
{
    imgElements.append(e);
}

void HTMLFormElement::removeImgElement(HTMLImageElement* e)
{
    removeFromVector(imgElements, e);
}

PassRefPtr<HTMLCollection> HTMLFormElement::elements()
{
    return HTMLFormCollection::create(this);
}

String HTMLFormElement::name() const
{
    return getAttribute(nameAttr);
}

void HTMLFormElement::setName(const String &value)
{
    setAttribute(nameAttr, value);
}

void HTMLFormElement::setAcceptCharset(const String &value)
{
    setAttribute(accept_charsetAttr, value);
}

String HTMLFormElement::action() const
{
    return getAttribute(actionAttr);
}

void HTMLFormElement::setAction(const String &value)
{
    setAttribute(actionAttr, value);
}

void HTMLFormElement::setEnctype(const String &value)
{
    setAttribute(enctypeAttr, value);
}

String HTMLFormElement::method() const
{
    return getAttribute(methodAttr);
}

void HTMLFormElement::setMethod(const String &value)
{
    setAttribute(methodAttr, value);
}

String HTMLFormElement::target() const
{
    return getAttribute(targetAttr);
}

void HTMLFormElement::setTarget(const String &value)
{
    setAttribute(targetAttr, value);
}

PassRefPtr<HTMLFormControlElement> HTMLFormElement::elementForAlias(const AtomicString& alias)
{
    if (alias.isEmpty() || !m_elementAliases)
        return 0;
    return m_elementAliases->get(alias.impl());
}

void HTMLFormElement::addElementAlias(HTMLFormControlElement* element, const AtomicString& alias)
{
    if (alias.isEmpty())
        return;
    if (!m_elementAliases)
        m_elementAliases = new AliasMap;
    m_elementAliases->set(alias.impl(), element);
}

void HTMLFormElement::getNamedElements(const AtomicString& name, Vector<RefPtr<Node> >& namedItems)
{
    elements()->namedItems(name, namedItems);

    // see if we have seen something with this name before
    RefPtr<HTMLFormControlElement> aliasElem;
    if (aliasElem = elementForAlias(name)) {
        bool found = false;
        for (unsigned n = 0; n < namedItems.size(); n++) {
            if (namedItems[n] == aliasElem.get()) {
                found = true;
                break;
            }
        }
        if (!found)
            // we have seen it before but it is gone now. still, we need to return it.
            namedItems.append(aliasElem.get());
    }
    // name has been accessed, remember it
    if (namedItems.size() && aliasElem != namedItems.first())
        addElementAlias(static_cast<HTMLFormControlElement*>(namedItems.first().get()), name);        
}

void HTMLFormElement::documentDidBecomeActive()
{
    ASSERT(!m_autocomplete);
    
    for (unsigned i = 0; i < formElements.size(); ++i)
        formElements[i]->reset();
}

void HTMLFormElement::willMoveToNewOwnerDocument()
{
    if (!m_autocomplete)
        document()->unregisterForDocumentActivationCallbacks(this);
}

void HTMLFormElement::didMoveToNewOwnerDocument()
{
    if(m_autocomplete)
        document()->registerForDocumentActivationCallbacks(this);
}

void HTMLFormElement::CheckedRadioButtons::addButton(HTMLFormControlElement* element)
{
    // We only want to add radio buttons.
    if (!element->isRadioButton())
        return;

    // Without a name, there is no group.
    if (element->name().isEmpty())
        return;

    HTMLInputElement* inputElement = static_cast<HTMLInputElement*>(element);

    // We only track checked buttons.
    if (!inputElement->checked())
        return;

    if (!m_nameToCheckedRadioButtonMap)
        m_nameToCheckedRadioButtonMap.set(new NameToInputMap);

    pair<NameToInputMap::iterator, bool> result = m_nameToCheckedRadioButtonMap->add(element->name().impl(), inputElement);
    if (result.second)
        return;
    
    HTMLInputElement* oldCheckedButton = result.first->second;
    if (oldCheckedButton == inputElement)
        return;

    result.first->second = inputElement;
    oldCheckedButton->setChecked(false);
}

HTMLInputElement* HTMLFormElement::CheckedRadioButtons::checkedButtonForGroup(const AtomicString& name) const
{
    if (!m_nameToCheckedRadioButtonMap)
        return 0;
    
    return m_nameToCheckedRadioButtonMap->get(name.impl());
}

void HTMLFormElement::CheckedRadioButtons::removeButton(HTMLFormControlElement* element)
{
    if (element->name().isEmpty() || !m_nameToCheckedRadioButtonMap)
        return;
    
    NameToInputMap::iterator it = m_nameToCheckedRadioButtonMap->find(element->name().impl());
    if (it == m_nameToCheckedRadioButtonMap->end() || it->second != element)
        return;
    
    InputElement* inputElement = toInputElement(element);
    ASSERT_UNUSED(inputElement, inputElement);
    ASSERT(inputElement->isChecked());
    ASSERT(element->isRadioButton());

    m_nameToCheckedRadioButtonMap->remove(it);
    if (m_nameToCheckedRadioButtonMap->isEmpty())
        m_nameToCheckedRadioButtonMap.clear();
}

} // namespace