/*

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

 * Copyright (C) 2004, 2006, 2007, 2008 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 CSSStyleSheet_h

#define CSSStyleSheet_h

#include "CSSRuleList.h"

#include "StyleSheet.h"

namespace WebCore {

struct CSSNamespace;

class CSSParser;

class CSSRule;

class DocLoader;

class Document;

typedef int ExceptionCode;

class CSSStyleSheet : public StyleSheet {

public:

    static PassRefPtr<CSSStyleSheet> create()

    {

        return adoptRef(new CSSStyleSheet(static_cast<CSSStyleSheet*>(0), String(), KURL(), String()));

    }

    static PassRefPtr<CSSStyleSheet> create(Node* ownerNode)

    {

        return adoptRef(new CSSStyleSheet(ownerNode, String(), KURL(), String()));

    }

    static PassRefPtr<CSSStyleSheet> create(Node* ownerNode, const String& originalURL, const KURL& finalURL)

    {

        return adoptRef(new CSSStyleSheet(ownerNode, originalURL, finalURL, String()));

    }

    static PassRefPtr<CSSStyleSheet> create(Node* ownerNode, const String& originalURL, const KURL& finalURL, const String& charset)

    {

        return adoptRef(new CSSStyleSheet(ownerNode, originalURL, finalURL, charset));

    }

    static PassRefPtr<CSSStyleSheet> create(CSSRule* ownerRule, const String& originalURL, const KURL& finalURL, const String& charset)

    {

        return adoptRef(new CSSStyleSheet(ownerRule, originalURL, finalURL, charset));

    }

    static PassRefPtr<CSSStyleSheet> createInline(Node* ownerNode, const KURL& finalURL)

    {

        return adoptRef(new CSSStyleSheet(ownerNode, finalURL.string(), finalURL, String()));

    }

    virtual ~CSSStyleSheet();

    CSSRule* ownerRule() const;

    PassRefPtr<CSSRuleList> cssRules(bool omitCharsetRules = false);

    unsigned insertRule(const String& rule, unsigned index, ExceptionCode&);

    void deleteRule(unsigned index, ExceptionCode&);

    // IE Extensions

    PassRefPtr<CSSRuleList> rules() { return cssRules(true); }

    int addRule(const String& selector, const String& style, int index, ExceptionCode&);

    int addRule(const String& selector, const String& style, ExceptionCode&);

    void removeRule(unsigned index, ExceptionCode& ec) { deleteRule(index, ec); }

    void addNamespace(CSSParser*, const AtomicString& prefix, const AtomicString& uri);

    const AtomicString& determineNamespace(const AtomicString& prefix);

    virtual void styleSheetChanged();

    virtual bool parseString(const String&, bool strict = true);

    bool parseStringAtLine(const String&, bool strict, int startLineNumber);

    virtual bool isLoading();

    virtual void checkLoaded();

    Document* doc() { return m_doc; }

    const String& charset() const { return m_charset; }

    bool loadCompleted() const { return m_loadCompleted; }

    virtual KURL completeURL(const String& url) const;

    virtual void addSubresourceStyleURLs(ListHashSet<KURL>&);

    void setStrictParsing(bool b) { m_strictParsing = b; }

    bool useStrictParsing() const { return m_strictParsing; }

    void setIsUserStyleSheet(bool b) { m_isUserStyleSheet = b; }

    bool isUserStyleSheet() const { return m_isUserStyleSheet; }

    void setHasSyntacticallyValidCSSHeader(bool b) { m_hasSyntacticallyValidCSSHeader = b; }

    bool hasSyntacticallyValidCSSHeader() const { return m_hasSyntacticallyValidCSSHeader; }

private:

    CSSStyleSheet(Node* ownerNode, const String& originalURL, const KURL& finalURL, const String& charset);

    CSSStyleSheet(CSSStyleSheet* parentSheet, const String& originalURL, const KURL& finalURL, const String& charset);

    CSSStyleSheet(CSSRule* ownerRule, const String& originalURL, const KURL& finalURL, const String& charset);

    virtual bool isCSSStyleSheet() const { return true; }

    virtual String type() const { return "text/css"; }

    Document* m_doc;

    CSSNamespace* m_namespaces;

    String m_charset;

    bool m_loadCompleted : 1;

    bool m_strictParsing : 1;

    bool m_isUserStyleSheet : 1;

    bool m_hasSyntacticallyValidCSSHeader : 1;

};

} // namespace

#endif