| OLD | NEW |
| 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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| 49 // for example when parsing UA stylesheets, if evaluation is done | 49 // for example when parsing UA stylesheets, if evaluation is done |
| 50 // right after parsing. | 50 // right after parsing. |
| 51 // | 51 // |
| 52 // the boolean parameter is used to approximate results of evaluation, if | 52 // the boolean parameter is used to approximate results of evaluation, if |
| 53 // the device characteristics are not known. This can be used to prune the loadi
ng | 53 // the device characteristics are not known. This can be used to prune the loadi
ng |
| 54 // of stylesheets to only those which are probable to match. | 54 // of stylesheets to only those which are probable to match. |
| 55 | 55 |
| 56 class CORE_EXPORT MediaQueryEvaluator final : public GarbageCollectedFinalized<M
ediaQueryEvaluator> { | 56 class CORE_EXPORT MediaQueryEvaluator final : public GarbageCollectedFinalized<M
ediaQueryEvaluator> { |
| 57 WTF_MAKE_NONCOPYABLE(MediaQueryEvaluator); | 57 WTF_MAKE_NONCOPYABLE(MediaQueryEvaluator); |
| 58 public: | 58 public: |
| 59 static void init(); |
| 60 |
| 59 // Creates evaluator which evaluates only simple media queries | 61 // Creates evaluator which evaluates only simple media queries |
| 60 // Evaluator returns true for "all", and returns value of \mediaFeatureResul
t | 62 // Evaluator returns true for "all", and returns value of \mediaFeatureResul
t |
| 61 // for any media features. | 63 // for any media features. |
| 62 | 64 |
| 63 explicit MediaQueryEvaluator(bool mediaFeatureResult = false); | 65 explicit MediaQueryEvaluator(bool mediaFeatureResult = false); |
| 64 | 66 |
| 65 // Creates evaluator which evaluates only simple media queries | 67 // Creates evaluator which evaluates only simple media queries |
| 66 // Evaluator returns true for acceptedMediaType and returns value of \media
featureResult | 68 // Evaluator returns true for acceptedMediaType and returns value of \media
featureResult |
| 67 // for any media features. | 69 // for any media features. |
| 68 | 70 |
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| 92 private: | 94 private: |
| 93 const String mediaType() const; | 95 const String mediaType() const; |
| 94 | 96 |
| 95 String m_mediaType; | 97 String m_mediaType; |
| 96 bool m_expectedResult; | 98 bool m_expectedResult; |
| 97 Member<MediaValues> m_mediaValues; | 99 Member<MediaValues> m_mediaValues; |
| 98 }; | 100 }; |
| 99 | 101 |
| 100 } // namespace blink | 102 } // namespace blink |
| 101 #endif | 103 #endif |
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