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/*
* Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef CSSParserMode_h
#define CSSParserMode_h
#include "core/fetch/ResourceLoaderOptions.h"
#include "platform/weborigin/KURL.h"
#include "platform/weborigin/Referrer.h"
namespace blink {
class Document;
// Must not grow beyond 3 bits, due to packing in StylePropertySet.
enum CSSParserMode {
HTMLStandardMode,
HTMLQuirksMode,
// HTML attributes are parsed in quirks mode but also allows internal properties and values.
HTMLAttributeMode,
// SVG attributes are parsed in quirks mode but rules differ slightly.
SVGAttributeMode,
// @viewport rules are parsed in standards mode but CSSOM modifications (via StylePropertySet)
// must call parseViewportProperties so needs a special mode.
CSSViewportRuleMode,
// User agent stylesheets are parsed in standards mode but also allows internal properties and values.
UASheetMode
};
inline bool isQuirksModeBehavior(CSSParserMode mode)
{
return mode == HTMLQuirksMode; // || mode == HTMLAttributeMode;
}
inline bool isUASheetBehavior(CSSParserMode mode)
{
return mode == UASheetMode;
}
inline bool isInternalPropertyAndValueParsingEnabledForMode(CSSParserMode mode)
{
return mode == HTMLAttributeMode || mode == UASheetMode;
}
inline bool isUnitLessLengthParsingEnabledForMode(CSSParserMode mode)
{
return mode == HTMLAttributeMode || mode == SVGAttributeMode;
}
inline bool isCSSViewportParsingEnabledForMode(CSSParserMode mode)
{
return mode == CSSViewportRuleMode;
}
inline bool isUseCounterEnabledForMode(CSSParserMode mode)
{
// We don't count the UA style sheet in our statistics.
return mode != UASheetMode;
}
class UseCounter;
class CSSParserContext {
WTF_MAKE_FAST_ALLOCATED;
public:
CSSParserContext(CSSParserMode, UseCounter*);
// FIXME: We shouldn't need the UseCounter argument as we could infer it from the Document
// but some callers want to disable use counting (e.g. the WebInspector).
CSSParserContext(const Document&, UseCounter*, const KURL& baseURL = KURL(), const String& charset = emptyString());
// FIXME: This constructor shouldn't exist if we properly piped the UseCounter through the CSS
// subsystem. Currently the UseCounter life time is too crazy and we need a way to override it.
CSSParserContext(const CSSParserContext&, UseCounter*);
bool operator==(const CSSParserContext&) const;
bool operator!=(const CSSParserContext& other) const { return !(*this == other); }
CSSParserMode mode() const { return m_mode; }
const KURL& baseURL() const { return m_baseURL; }
const String& charset() const { return m_charset; }
const Referrer& referrer() const { return m_referrer; }
bool isHTMLDocument() const { return m_isHTMLDocument; }
// This quirk is to maintain compatibility with Android apps built on
// the Android SDK prior to and including version 18. Presumably, this
// can be removed any time after 2015. See http://crbug.com/277157.
bool useLegacyBackgroundSizeShorthandBehavior() const { return m_useLegacyBackgroundSizeShorthandBehavior; }
// FIXME: These setters shouldn't exist, however the current lifetime of CSSParserContext
// is not well understood and thus we sometimes need to override these fields.
void setMode(CSSParserMode mode) { m_mode = mode; }
void setBaseURL(const KURL& baseURL) { m_baseURL = baseURL; }
void setCharset(const String& charset) { m_charset = charset; }
void setReferrer(const Referrer& referrer) { m_referrer = referrer; }
KURL completeURL(const String& url) const;
UseCounter* useCounter() const { return m_useCounter; }
ContentSecurityPolicyDisposition shouldCheckContentSecurityPolicy() const { return m_shouldCheckContentSecurityPolicy; }
private:
KURL m_baseURL;
String m_charset;
CSSParserMode m_mode;
Referrer m_referrer;
bool m_isHTMLDocument;
bool m_useLegacyBackgroundSizeShorthandBehavior;
ContentSecurityPolicyDisposition m_shouldCheckContentSecurityPolicy;
UseCounter* m_useCounter;
};
const CSSParserContext& strictCSSParserContext();
};
#endif // CSSParserMode_h
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