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1 /* | |
2 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved. | |
3 * Copyright (C) 2012 Apple Inc. All rights reserved. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions | |
7 * are met: | |
8 * | |
9 * 1. Redistributions of source code must retain the above | |
10 * copyright notice, this list of conditions and the following | |
11 * disclaimer. | |
12 * 2. Redistributions in binary form must reproduce the above | |
13 * copyright notice, this list of conditions and the following | |
14 * disclaimer in the documentation and/or other materials | |
15 * provided with the distribution. | |
16 * | |
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY | |
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE | |
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, | |
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
26 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF | |
27 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
28 * SUCH DAMAGE. | |
29 */ | |
30 | |
31 #ifndef CSSParserMode_h | |
32 #define CSSParserMode_h | |
33 | |
34 #include "platform/weborigin/KURL.h" | |
35 #include "platform/weborigin/Referrer.h" | |
36 | |
37 namespace blink { | |
38 | |
39 class Document; | |
40 | |
41 // Must not grow beyond 3 bits, due to packing in StylePropertySet. | |
42 enum CSSParserMode { | |
43 HTMLStandardMode, | |
44 HTMLQuirksMode, | |
45 // HTML attributes are parsed in quirks mode but also allows internal proper
ties and values. | |
46 HTMLAttributeMode, | |
47 // SVG attributes are parsed in quirks mode but rules differ slightly. | |
48 SVGAttributeMode, | |
49 // @viewport rules are parsed in standards mode but CSSOM modifications (via
StylePropertySet) | |
50 // must call parseViewportProperties so needs a special mode. | |
51 CSSViewportRuleMode, | |
52 // User agent stylesheets are parsed in standards mode but also allows inter
nal properties and values. | |
53 UASheetMode | |
54 }; | |
55 | |
56 inline bool isQuirksModeBehavior(CSSParserMode mode) | |
57 { | |
58 return mode == HTMLQuirksMode; // || mode == HTMLAttributeMode; | |
59 } | |
60 | |
61 inline bool isUASheetBehavior(CSSParserMode mode) | |
62 { | |
63 return mode == UASheetMode; | |
64 } | |
65 | |
66 inline bool isInternalPropertyAndValueParsingEnabledForMode(CSSParserMode mode) | |
67 { | |
68 return mode == HTMLAttributeMode || mode == UASheetMode; | |
69 } | |
70 | |
71 inline bool isUnitLessLengthParsingEnabledForMode(CSSParserMode mode) | |
72 { | |
73 return mode == HTMLQuirksMode || mode == HTMLAttributeMode || mode == SVGAtt
ributeMode; | |
74 } | |
75 | |
76 inline bool isCSSViewportParsingEnabledForMode(CSSParserMode mode) | |
77 { | |
78 return mode == CSSViewportRuleMode; | |
79 } | |
80 | |
81 inline bool isSVGNumberParsingEnabledForMode(CSSParserMode mode) | |
82 { | |
83 return mode == SVGAttributeMode; | |
84 } | |
85 | |
86 inline bool isUseCounterEnabledForMode(CSSParserMode mode) | |
87 { | |
88 // We don't count the UA style sheet in our statistics. | |
89 return mode != UASheetMode; | |
90 } | |
91 | |
92 class UseCounter; | |
93 | |
94 class CSSParserContext { | |
95 WTF_MAKE_FAST_ALLOCATED; | |
96 public: | |
97 CSSParserContext(CSSParserMode, UseCounter*); | |
98 // FIXME: We shouldn't need the UseCounter argument as we could infer it fro
m the Document | |
99 // but some callers want to disable use counting (e.g. the WebInspector). | |
100 CSSParserContext(const Document&, UseCounter*, const KURL& baseURL = KURL(),
const String& charset = emptyString()); | |
101 // FIXME: This constructor shouldn't exist if we properly piped the UseCount
er through the CSS | |
102 // subsystem. Currently the UseCounter life time is too crazy and we need a
way to override it. | |
103 CSSParserContext(const CSSParserContext&, UseCounter*); | |
104 | |
105 bool operator==(const CSSParserContext&) const; | |
106 bool operator!=(const CSSParserContext& other) const { return !(*this == oth
er); } | |
107 | |
108 CSSParserMode mode() const { return m_mode; } | |
109 const KURL& baseURL() const { return m_baseURL; } | |
110 const String& charset() const { return m_charset; } | |
111 const Referrer& referrer() const { return m_referrer; } | |
112 bool isHTMLDocument() const { return m_isHTMLDocument; } | |
113 | |
114 // This quirk is to maintain compatibility with Android apps built on | |
115 // the Android SDK prior to and including version 18. Presumably, this | |
116 // can be removed any time after 2015. See http://crbug.com/277157. | |
117 bool useLegacyBackgroundSizeShorthandBehavior() const { return m_useLegacyBa
ckgroundSizeShorthandBehavior; } | |
118 | |
119 // FIXME: These setters shouldn't exist, however the current lifetime of CSS
ParserContext | |
120 // is not well understood and thus we sometimes need to override these field
s. | |
121 void setMode(CSSParserMode mode) { m_mode = mode; } | |
122 void setBaseURL(const KURL& baseURL) { m_baseURL = baseURL; } | |
123 void setCharset(const String& charset) { m_charset = charset; } | |
124 void setReferrer(const Referrer& referrer) { m_referrer = referrer; } | |
125 | |
126 KURL completeURL(const String& url) const; | |
127 | |
128 UseCounter* useCounter() const { return m_useCounter; } | |
129 | |
130 private: | |
131 KURL m_baseURL; | |
132 String m_charset; | |
133 CSSParserMode m_mode; | |
134 Referrer m_referrer; | |
135 bool m_isHTMLDocument; | |
136 bool m_useLegacyBackgroundSizeShorthandBehavior; | |
137 | |
138 UseCounter* m_useCounter; | |
139 }; | |
140 | |
141 const CSSParserContext& strictCSSParserContext(); | |
142 | |
143 }; | |
144 | |
145 #endif // CSSParserMode_h | |
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