/*

 * Copyright (C) 2008 Apple Inc. All Rights Reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "Storage.h"

#if ENABLE(DOM_STORAGE)

#include "StorageArea.h"

#include "PlatformString.h"

#include <wtf/PassRefPtr.h>

namespace WebCore {

PassRefPtr<Storage> Storage::create(Frame* frame, PassRefPtr<StorageArea> storageArea)

{

    return adoptRef(new Storage(frame, storageArea));

}

Storage::Storage(Frame* frame, PassRefPtr<StorageArea> storageArea)

    : m_frame(frame)

    , m_storageArea(storageArea)

{

    ASSERT(m_frame);

    ASSERT(m_storageArea);

}

Storage::~Storage()

{

}

unsigned Storage::length() const

{

    if (!m_frame)

        return 0;

    return m_storageArea->length();

}

String Storage::key(unsigned index) const

{

    if (!m_frame)

        return String();

    return m_storageArea->key(index);

}

String Storage::getItem(const String& key) const

{

    if (!m_frame)

        return String();

    return m_storageArea->getItem(key);

}

void Storage::setItem(const String& key, const String& value, ExceptionCode& ec)

{

    ec = 0;

    if (!m_frame)

        return;

    m_storageArea->setItem(key, value, ec, m_frame);

}

void Storage::removeItem(const String& key)

{

    if (!m_frame)

        return;

    m_storageArea->removeItem(key, m_frame);

}

void Storage::clear()

{

    if (!m_frame)

        return;

    m_storageArea->clear(m_frame);

}

bool Storage::contains(const String& key) const

{

    if (!m_frame)

        return false;

    return m_storageArea->contains(key);

}

}

#endif // ENABLE(DOM_STORAGE)