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 <wtf/Vector.h> 31 32namespace WebCore { 33 34 class CachedResourceClient; 35 class StyleSheetContents; 36 class TextResourceDecoder; 37 struct CSSParserContext; 38 39 class CachedCSSStyleSheet final : public CachedResource { 40 public: 41 CachedCSSStyleSheet(const ResourceRequest&, const String& charset, SessionID); 42 virtual ~CachedCSSStyleSheet(); 43 44 const String sheetText(bool enforceMIMEType = true, bool* hasValidMIMEType = 0) const; 45 46 PassRefPtr<StyleSheetContents> restoreParsedStyleSheet(const CSSParserContext&); 47 void saveParsedStyleSheet(PassRef<StyleSheetContents>); 48 49 private: 50 bool canUseSheet(bool enforceMIMEType, bool* hasValidMIMEType) const; 51 virtual PurgePriority purgePriority() const override { return PurgeLast; } 52 virtual bool mayTryReplaceEncodedData() const override { return true; } 53 54 virtual void didAddClient(CachedResourceClient*) override; 55 56 virtual void setEncoding(const String&) override; 57 virtual String encoding() const override; 58 virtual void finishLoading(ResourceBuffer*) override; 59 virtual void destroyDecodedData() override; 60 61 protected: 62 virtual void checkNotify() override; 63 64 RefPtr<TextResourceDecoder> m_decoder; 65 String m_decodedSheetText; 66 67 RefPtr<StyleSheetContents> m_parsedStyleSheetCache; 68 }; 69 70CACHED_RESOURCE_TYPE_CASTS(CachedCSSStyleSheet, CachedResource, CachedResource::CSSStyleSheet) 71 72} 73 74#endif 75