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/*
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 THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_RESOURCE_CSS_STYLE_SHEET_RESOURCE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_RESOURCE_CSS_STYLE_SHEET_RESOURCE_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/loader/resource/text_resource.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/loader/fetch/text_resource_decoder_options.h"
#include "third_party/blink/renderer/platform/wtf/text/text_encoding.h"
namespace blink {
class CSSParserContext;
class FetchParameters;
class KURL;
class ResourceFetcher;
class StyleSheetContents;
class CORE_EXPORT CSSStyleSheetResource final : public TextResource {
public:
enum class MIMETypeCheck { kStrict, kLax };
static CSSStyleSheetResource* Fetch(FetchParameters&,
ResourceFetcher*,
ResourceClient*);
static CSSStyleSheetResource* CreateForTest(const KURL&,
const WTF::TextEncoding&);
CSSStyleSheetResource(const ResourceRequest&,
const ResourceLoaderOptions&,
const TextResourceDecoderOptions&);
~CSSStyleSheetResource() override;
void Trace(Visitor*) const override;
void OnMemoryDump(WebMemoryDumpLevelOfDetail,
WebProcessMemoryDump*) const override;
const String SheetText(const CSSParserContext*,
MIMETypeCheck = MIMETypeCheck::kStrict) const;
StyleSheetContents* CreateParsedStyleSheetFromCache(const CSSParserContext*);
void SaveParsedStyleSheet(StyleSheetContents*);
network::mojom::ReferrerPolicy GetReferrerPolicy() const;
private:
class CSSStyleSheetResourceFactory : public ResourceFactory {
public:
CSSStyleSheetResourceFactory()
: ResourceFactory(ResourceType::kCSSStyleSheet,
TextResourceDecoderOptions::kCSSContent) {}
Resource* Create(
const ResourceRequest& request,
const ResourceLoaderOptions& options,
const TextResourceDecoderOptions& decoder_options) const override {
return MakeGarbageCollected<CSSStyleSheetResource>(request, options,
decoder_options);
}
};
bool CanUseSheet(const CSSParserContext*, MIMETypeCheck) const;
void NotifyFinished() override;
void SetParsedStyleSheetCache(StyleSheetContents*);
void SetDecodedSheetText(const String&);
void DestroyDecodedDataIfPossible() override;
void DestroyDecodedDataForFailedRevalidation() override;
void UpdateDecodedSize();
// Decoded sheet text cache is available iff loading this CSS resource is
// successfully complete.
String decoded_sheet_text_;
Member<StyleSheetContents> parsed_style_sheet_cache_;
};
template <>
struct DowncastTraits<CSSStyleSheetResource> {
static bool AllowFrom(const Resource& resource) {
return resource.GetType() == ResourceType::kCSSStyleSheet;
}
};
} // namespace blink
#endif
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