/*

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

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

 * Copyright (C) 2002, 2006, 2007 Apple Inc. All rights reserved.

 *

 * 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.

 */

#ifndef CSSRule_h

#define CSSRule_h

#include "CSSStyleSheet.h"

#include "KURLHash.h"

#include <wtf/ListHashSet.h>

namespace WebCore {

typedef int ExceptionCode;

class CSSRule : public StyleBase {

public:

    // FIXME: Change name to Type.

    enum CSSRuleType {

        UNKNOWN_RULE,

        STYLE_RULE,

        CHARSET_RULE,

        IMPORT_RULE,

        MEDIA_RULE,

        FONT_FACE_RULE,

        PAGE_RULE,

        VARIABLES_RULE,

        WEBKIT_KEYFRAMES_RULE,

        WEBKIT_KEYFRAME_RULE

    };

    // FIXME: Change to return CSSRuleType.

    virtual unsigned short type() const = 0;

    CSSStyleSheet* parentStyleSheet() const;

    CSSRule* parentRule() const;

    virtual String cssText() const = 0;

    void setCssText(const String&, ExceptionCode&);

    virtual void addSubresourceStyleURLs(ListHashSet<KURL>&) { }

protected:

    CSSRule(CSSStyleSheet* parent)

        : StyleBase(parent)

    {

    }

private:

    virtual bool isRule() { return true; }

};

} // namespace WebCore

#endif // CSSRule_h