Source/core/css/MediaQueryEvaluator.h - Issue 178803006: Turn MQ classes into thread safe

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Issue 178803006: Turn MQ classes into thread safe (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Removed StringImpl comparison atomic check 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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58 /** Creates evaluator which evaluates only simple media queries	58 /** Creates evaluator which evaluates only simple media queries

59 * Evaluator returns true for "all", and returns value of \mediaFeatureResu lt	59 * Evaluator returns true for "all", and returns value of \mediaFeatureResu lt

60 * for any media features	60 * for any media features

61 */	61 */

62 explicit MediaQueryEvaluator(bool mediaFeatureResult = false);	62 explicit MediaQueryEvaluator(bool mediaFeatureResult = false);

63	63

64 /** Creates evaluator which evaluates only simple media queries	64 /** Creates evaluator which evaluates only simple media queries

65 * Evaluator returns true for acceptedMediaType and returns value of \medi afeatureResult	65 * Evaluator returns true for acceptedMediaType and returns value of \medi afeatureResult

66 * for any media features	66 * for any media features

67 */	67 */

68 MediaQueryEvaluator(const AtomicString& acceptedMediaType, bool mediaFeature Result = false);	68 MediaQueryEvaluator(const String& acceptedMediaType, bool mediaFeatureResult = false);

69 MediaQueryEvaluator(const char* acceptedMediaType, bool mediaFeatureResult = false);	69 MediaQueryEvaluator(const char* acceptedMediaType, bool mediaFeatureResult = false);

70	70

71 /** Creates evaluator which evaluates full media queries */	71 /** Creates evaluator which evaluates full media queries */

72 MediaQueryEvaluator(const AtomicString& acceptedMediaType, LocalFrame, Rend erStyle);	72 MediaQueryEvaluator(const String& acceptedMediaType, LocalFrame, RenderStyl e);

73	73

74 ~MediaQueryEvaluator();	74 ~MediaQueryEvaluator();

75	75

76 bool mediaTypeMatch(const AtomicString& mediaTypeToMatch) const;	76 bool mediaTypeMatch(const String& mediaTypeToMatch) const;

77 bool mediaTypeMatchSpecific(const char* mediaTypeToMatch) const;	77 bool mediaTypeMatchSpecific(const char* mediaTypeToMatch) const;

78	78

79 /** Evaluates a list of media queries */	79 /** Evaluates a list of media queries */

80 bool eval(const MediaQuerySet, MediaQueryResultList = 0) const;	80 bool eval(const MediaQuerySet, MediaQueryResultList = 0) const;

81	81

82 /** Evaluates media query subexpression, ie "and (media-feature: value)" par t */	82 /** Evaluates media query subexpression, ie "and (media-feature: value)" par t */

83 bool eval(const MediaQueryExp*) const;	83 bool eval(const MediaQueryExp*) const;

84	84

85 private:	85 private:

86 AtomicString m_mediaType;	86 String m_mediaType;

87 LocalFrame* m_frame; // Not owned.	87 LocalFrame* m_frame; // Not owned.

88 RefPtr<RenderStyle> m_style;	88 RefPtr<RenderStyle> m_style;

89 bool m_expResult;	89 bool m_expResult;

90 };	90 };

91	91

92 } // namespace	92 } // namespace

93 #endif	93 #endif

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