xref: /external/chromium_org/third_party/WebKit/Source/core/loader/cache/CSSStyleSheetResource.h

/*
    Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
    Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
    Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
    Copyright (C) 2004, 2005, 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.

    This class provides all functionality needed for loading images, style sheets and html
    pages from the web. It has a memory cache for these objects.
*/

#ifndef CSSStyleSheetResource_h
#define CSSStyleSheetResource_h

#include "core/loader/cache/Resource.h"

namespace WebCore {

class ResourceClient;
class StyleSheetContents;
class TextResourceDecoder;
struct CSSParserContext;

class CSSStyleSheetResource : public Resource {
public:
    CSSStyleSheetResource(const ResourceRequest&, const String& charset);
    virtual ~CSSStyleSheetResource();

    const String sheetText(bool enforceMIMEType = true, bool* hasValidMIMEType = 0) const;

    virtual void didAddClient(ResourceClient*);
    virtual void setEncoding(const String&);
    virtual String encoding() const;
    virtual void destroyDecodedData() OVERRIDE;

    PassRefPtr<StyleSheetContents> restoreParsedStyleSheet(const CSSParserContext&);
    void saveParsedStyleSheet(PassRefPtr<StyleSheetContents>);

private:
    bool canUseSheet(bool enforceMIMEType, bool* hasValidMIMEType) const;

protected:
    virtual void checkNotify();

    RefPtr<TextResourceDecoder> m_decoder;
    String m_decodedSheetText;

    RefPtr<StyleSheetContents> m_parsedStyleSheetCache;
};

}

#endif