/**

 * This file is part of the DOM implementation for KDE.

 *

 * (C) 1999-2003 Lars Knoll (knoll@kde.org)

 * (C) 2002-2003 Dirk Mueller (mueller@kde.org)

 * Copyright (C) 2002, 2005, 2006 Apple Computer, Inc.

 *

 * 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 "CSSRuleList.h"

#include "CSSRule.h"

#include "StyleList.h"

namespace WebCore {

CSSRuleList::CSSRuleList()

{

}

CSSRuleList::CSSRuleList(StyleList* list, bool omitCharsetRules)

{

    m_list = list;

    if (list && omitCharsetRules) {

        m_list = 0;

        unsigned len = list->length();

        for (unsigned i = 0; i < len; ++i) {

            StyleBase* style = list->item(i);

            if (style->isRule() && !style->isCharsetRule())

                append(static_cast<CSSRule*>(style));

        }

    }

}

CSSRuleList::~CSSRuleList()

{

}

unsigned CSSRuleList::length() const

{

    return m_list ? m_list->length() : m_lstCSSRules.size();

}

CSSRule* CSSRuleList::item(unsigned index)

{

    if (m_list) {

        StyleBase* rule = m_list->item(index);

        ASSERT(!rule || rule->isRule());

        return static_cast<CSSRule*>(rule);

    }

    if (index < m_lstCSSRules.size())

        return m_lstCSSRules[index].get();

    return 0;

}

void CSSRuleList::deleteRule(unsigned index)

{

    ASSERT(!m_list);

    if (index >= m_lstCSSRules.size()) {

        // FIXME: Should we throw an INDEX_SIZE_ERR exception here?

        return;

    }

    m_lstCSSRules.remove(index);

}

void CSSRuleList::append(CSSRule* rule)

{

    ASSERT(!m_list);

    if (!rule) {

        // FIXME: Should we throw an exception?

        return;

    }

    m_lstCSSRules.append(rule);

}

unsigned CSSRuleList::insertRule(CSSRule* rule, unsigned index)

{

    ASSERT(!m_list);

    if (!rule) {

        // FIXME: Should we throw an exception?

        return 0;

    }

    if (index > m_lstCSSRules.size()) {

        // FIXME: Should we throw an INDEX_SIZE_ERR exception here?

        return 0;

    }

    m_lstCSSRules.insert(index, rule);

    return index;

}

} // namespace WebCore