Source/core/css/MediaQueryEvaluator.h - Issue 171383002: A thread-safe Media Query Parser

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Issue 171383002: A thread-safe Media Query Parser (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Another attempt to fix Android build issues Created 6 years, 9 months ago

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1 /*	1 /*

2 * CSS Media Query Evaluator	2 * CSS Media Query Evaluator

3 *	3 *

4 * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.	4 * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.

5 *	5 *

6 * Redistribution and use in source and binary forms, with or without	6 * Redistribution and use in source and binary forms, with or without

7 * modification, are permitted provided that the following conditions	7 * modification, are permitted provided that the following conditions

8 * are met:	8 * are met:

9 * 1. Redistributions of source code must retain the above copyright	9 * 1. Redistributions of source code must retain the above copyright

10 * notice, this list of conditions and the following disclaimer.	10 * notice, this list of conditions and the following disclaimer.

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57 /** Creates evaluator which evaluates only simple media queries	57 /** Creates evaluator which evaluates only simple media queries

58 * Evaluator returns true for "all", and returns value of \mediaFeatureResu lt	58 * Evaluator returns true for "all", and returns value of \mediaFeatureResu lt

59 * for any media features	59 * for any media features

60 */	60 */

61 explicit MediaQueryEvaluator(bool mediaFeatureResult = false);	61 explicit MediaQueryEvaluator(bool mediaFeatureResult = false);

62	62

63 /** Creates evaluator which evaluates only simple media queries	63 /** Creates evaluator which evaluates only simple media queries

64 * Evaluator returns true for acceptedMediaType and returns value of \medi afeatureResult	64 * Evaluator returns true for acceptedMediaType and returns value of \medi afeatureResult

65 * for any media features	65 * for any media features

66 */	66 */

67 MediaQueryEvaluator(const AtomicString& acceptedMediaType, bool mediaFeature Result = false);	67 MediaQueryEvaluator(const String& acceptedMediaType, bool mediaFeatureResult = false);

68 MediaQueryEvaluator(const char* acceptedMediaType, bool mediaFeatureResult = false);	68 MediaQueryEvaluator(const char* acceptedMediaType, bool mediaFeatureResult = false);

69	69

70 /** Creates evaluator which evaluates full media queries */	70 /** Creates evaluator which evaluates full media queries */

71 MediaQueryEvaluator(const AtomicString& acceptedMediaType, LocalFrame, Rend erStyle);	71 MediaQueryEvaluator(const String& acceptedMediaType, LocalFrame, RenderStyl e);

72	72

73 ~MediaQueryEvaluator();	73 ~MediaQueryEvaluator();

74	74

75 bool mediaTypeMatch(const AtomicString& mediaTypeToMatch) const;	75 bool mediaTypeMatch(const String& mediaTypeToMatch) const;

76 bool mediaTypeMatchSpecific(const char* mediaTypeToMatch) const;	76 bool mediaTypeMatchSpecific(const char* mediaTypeToMatch) const;

77	77

78 /** Evaluates a list of media queries */	78 /** Evaluates a list of media queries */

79 bool eval(const MediaQuerySet, MediaQueryResultList = 0) const;	79 bool eval(const MediaQuerySet, MediaQueryResultList = 0) const;

80	80

81 /** Evaluates media query subexpression, ie "and (media-feature: value)" par t */	81 /** Evaluates media query subexpression, ie "and (media-feature: value)" par t */

82 bool eval(const MediaQueryExp*) const;	82 bool eval(const MediaQueryExp*) const;

83	83

84 private:	84 private:

85 AtomicString m_mediaType;	85 String m_mediaType;

86 LocalFrame* m_frame; // Not owned.	86 LocalFrame* m_frame; // Not owned.

87 RefPtr<RenderStyle> m_style;	87 RefPtr<RenderStyle> m_style;

88 bool m_expResult;	88 bool m_expResult;

89 };	89 };

90	90

91 } // namespace	91 } // namespace

92 #endif	92 #endif

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« Source/core/css/MediaQuery.cpp ('K') | « Source/core/css/MediaQuery.cpp ('k') | Source/core/css/MediaQueryEvaluator.cpp » ('j') | Source/core/css/MediaQueryExp.cpp » ('J')