Source/core/html/forms/HiddenInputType.cpp

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 * Copyright (C) 2011 Apple Inc. All rights reserved.
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#include "config.h"
#include "core/html/forms/HiddenInputType.h"

#include "HTMLNames.h"
#include "InputTypeNames.h"
#include "core/html/FormDataList.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/forms/FormController.h"
#include "wtf/PassOwnPtr.h"

namespace WebCore {

using namespace HTMLNames;

PassRefPtr<InputType> HiddenInputType::create(HTMLInputElement& element)
{
    return adoptRef(new HiddenInputType(element));
}

const AtomicString& HiddenInputType::formControlType() const
{
    return InputTypeNames::hidden;
}

FormControlState HiddenInputType::saveFormControlState() const
{
    // valueAttributeWasUpdatedAfterParsing() never be true for form
    // controls create by createElement() or cloneNode(). It's ok for
    // now because we restore values only to form controls created by
    // parsing.
    return element().valueAttributeWasUpdatedAfterParsing() ? FormControlState(element().value()) : FormControlState();
}

void HiddenInputType::restoreFormControlState(const FormControlState& state)
{
    element().setAttribute(valueAttr, AtomicString(state[0]));
}

bool HiddenInputType::supportsValidation() const
{
    return false;
}

RenderObject* HiddenInputType::createRenderer(RenderStyle*) const
{
    ASSERT_NOT_REACHED();
    return 0;
}

void HiddenInputType::accessKeyAction(bool)
{
}

bool HiddenInputType::rendererIsNeeded()
{
    return false;
}

bool HiddenInputType::storesValueSeparateFromAttribute()
{
    return false;
}

void HiddenInputType::setValue(const String& sanitizedValue, bool, TextFieldEventBehavior)
{
    element().setAttribute(valueAttr, AtomicString(sanitizedValue));
}

bool HiddenInputType::isHiddenType() const
{
    return true;
}

bool HiddenInputType::appendFormData(FormDataList& encoding, bool isMultipartForm) const
{
    if (equalIgnoringCase(element().name(), "_charset_")) {
        encoding.appendData(element().name(), String(encoding.encoding().name()));
        return true;
    }
    return InputType::appendFormData(encoding, isMultipartForm);
}

bool HiddenInputType::shouldRespectHeightAndWidthAttributes()
{
    return true;
}

} // namespace WebCore