1/*
2    Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
3    Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
4    Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
5    Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
6
7    This library is free software; you can redistribute it and/or
8    modify it under the terms of the GNU Library General Public
9    License as published by the Free Software Foundation; either
10    version 2 of the License, or (at your option) any later version.
11
12    This library is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15    Library General Public License for more details.
16
17    You should have received a copy of the GNU Library General Public License
18    along with this library; see the file COPYING.LIB.  If not, write to
19    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20    Boston, MA 02110-1301, USA.
21
22    This class provides all functionality needed for loading images, style sheets and html
23    pages from the web. It has a memory cache for these objects.
24*/
25
26#ifndef CachedCSSStyleSheet_h
27#define CachedCSSStyleSheet_h
28
29#include "CachedResource.h"
30#include "TextEncoding.h"
31#include <wtf/Vector.h>
32
33namespace WebCore {
34
35    class CachedResourceLoader;
36    class TextResourceDecoder;
37
38    class CachedCSSStyleSheet : public CachedResource {
39    public:
40        CachedCSSStyleSheet(const String& URL, const String& charset);
41        virtual ~CachedCSSStyleSheet();
42
43        const String sheetText(bool enforceMIMEType = true, bool* hasValidMIMEType = 0) const;
44
45        virtual void didAddClient(CachedResourceClient*);
46
47        virtual void allClientsRemoved();
48
49        virtual void setEncoding(const String&);
50        virtual String encoding() const;
51        virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
52        virtual void error(CachedResource::Status);
53
54        void checkNotify();
55
56    private:
57        bool canUseSheet(bool enforceMIMEType, bool* hasValidMIMEType) const;
58        virtual PurgePriority purgePriority() const { return PurgeLast; }
59
60    protected:
61        RefPtr<TextResourceDecoder> m_decoder;
62        String m_decodedSheetText;
63    };
64
65}
66
67#endif
68