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| 1 /* | |
| 2 * Copyright (C) 2012 Google, Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #ifndef FeatureObserver_h | |
| 27 #define FeatureObserver_h | |
| 28 | |
| 29 #include <wtf/BitVector.h> | |
| 30 #include <wtf/Noncopyable.h> | |
| 31 #include <wtf/OwnPtr.h> | |
| 32 #include <wtf/PassOwnPtr.h> | |
| 33 | |
| 34 namespace WebCore { | |
| 35 | |
| 36 class DOMWindow; | |
| 37 class Document; | |
| 38 | |
| 39 class FeatureObserver { | |
| 40 WTF_MAKE_NONCOPYABLE(FeatureObserver); | |
| 41 public: | |
| 42 FeatureObserver(); | |
| 43 ~FeatureObserver(); | |
| 44 | |
| 45 enum Feature { | |
| 46 PageDestruction, | |
| 47 LegacyNotifications, | |
| 48 MultipartMainResource, | |
| 49 PrefixedIndexedDB, | |
| 50 WorkerStart, | |
| 51 SharedWorkerStart, | |
| 52 LegacyWebAudio, | |
| 53 WebAudioStart, | |
| 54 PrefixedContentSecurityPolicy, | |
| 55 UnprefixedIndexedDB, | |
| 56 OpenWebDatabase, | |
| 57 LegacyHTMLNotifications, | |
| 58 LegacyTextNotifications, | |
| 59 UnprefixedRequestAnimationFrame, | |
| 60 PrefixedRequestAnimationFrame, | |
| 61 ContentSecurityPolicy, | |
| 62 ContentSecurityPolicyReportOnly, | |
| 63 PrefixedContentSecurityPolicyReportOnly, | |
| 64 PrefixedTransitionEndEvent, | |
| 65 UnprefixedTransitionEndEvent, | |
| 66 PrefixedAndUnprefixedTransitionEndEvent, | |
| 67 AutoFocusAttribute, | |
| 68 AutoSaveAttribute, | |
| 69 DataListElement, | |
| 70 FormAttribute, | |
| 71 IncrementalAttribute, | |
| 72 InputTypeColor, | |
| 73 InputTypeDate, | |
| 74 InputTypeDateTime, | |
| 75 InputTypeDateTimeFallback, | |
| 76 InputTypeDateTimeLocal, | |
| 77 InputTypeEmail, | |
| 78 InputTypeMonth, | |
| 79 InputTypeNumber, | |
| 80 InputTypeRange, | |
| 81 InputTypeSearch, | |
| 82 InputTypeTel, | |
| 83 InputTypeTime, | |
| 84 InputTypeURL, | |
| 85 InputTypeWeek, | |
| 86 InputTypeWeekFallback, | |
| 87 ListAttribute, | |
| 88 MaxAttribute, | |
| 89 MinAttribute, | |
| 90 PatternAttribute, | |
| 91 PlaceholderAttribute, | |
| 92 PrecisionAttribute, | |
| 93 PrefixedDirectoryAttribute, | |
| 94 PrefixedSpeechAttribute, | |
| 95 RequiredAttribute, | |
| 96 ResultsAttribute, | |
| 97 StepAttribute, | |
| 98 PageVisits, | |
| 99 HTMLMarqueeElement, | |
| 100 CSSOverflowMarquee, | |
| 101 Reflection, | |
| 102 CursorVisibility, | |
| 103 StorageInfo, | |
| 104 XFrameOptions, | |
| 105 XFrameOptionsSameOrigin, | |
| 106 XFrameOptionsSameOriginWithBadAncestorChain, | |
| 107 DeprecatedFlexboxWebContent, | |
| 108 DeprecatedFlexboxChrome, | |
| 109 DeprecatedFlexboxChromeExtension, | |
| 110 // Add new features above this line. Don't change assigned numbers of ea
ch items. | |
| 111 NumberOfFeatures, // This enum value must be last. | |
| 112 }; | |
| 113 | |
| 114 static void observe(Document*, Feature); | |
| 115 static void observe(DOMWindow*, Feature); | |
| 116 void didCommitLoad(); | |
| 117 | |
| 118 const BitVector* accumulatedFeatureBits() const { return m_featureBits.get()
; } | |
| 119 | |
| 120 private: | |
| 121 void didObserve(Feature feature) | |
| 122 { | |
| 123 ASSERT(feature != PageDestruction); // PageDestruction is reserved as a
scaling factor. | |
| 124 ASSERT(feature < NumberOfFeatures); | |
| 125 if (!m_featureBits) { | |
| 126 m_featureBits = adoptPtr(new BitVector(NumberOfFeatures)); | |
| 127 m_featureBits->clearAll(); | |
| 128 } | |
| 129 m_featureBits->quickSet(feature); | |
| 130 } | |
| 131 | |
| 132 void updateMeasurements(); | |
| 133 | |
| 134 OwnPtr<BitVector> m_featureBits; | |
| 135 }; | |
| 136 | |
| 137 } // namespace WebCore | |
| 138 | |
| 139 #endif // FeatureObserver_h | |
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Chromium Code Reviews
Issue 14301003:
Rename FeatureObserver to UseCounter to make clear that all it stores are usage counts. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk