| OLD | NEW |
|---|
| (Empty) |
| 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 are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "web/ContextFeaturesClientImpl.h" | |
| 32 | |
| 33 #include "core/dom/Document.h" | |
| 34 #include "platform/weborigin/SecurityOrigin.h" | |
| 35 #include "public/web/WebContentSettingsClient.h" | |
| 36 #include "public/web/WebDocument.h" | |
| 37 #include "web/WebLocalFrameImpl.h" | |
| 38 | |
| 39 namespace blink { | |
| 40 | |
| 41 class ContextFeaturesCache final | |
| 42 : public GarbageCollectedFinalized<ContextFeaturesCache>, | |
| 43 public Supplement<Document> { | |
| 44 USING_GARBAGE_COLLECTED_MIXIN(ContextFeaturesCache); | |
| 45 | |
| 46 public: | |
| 47 class Entry { | |
| 48 public: | |
| 49 enum Value { IsEnabled, IsDisabled, NeedsRefresh }; | |
| 50 | |
| 51 Entry() : m_value(NeedsRefresh), m_defaultValue(false) {} | |
| 52 | |
| 53 bool isEnabled() const { | |
| 54 DCHECK_NE(m_value, NeedsRefresh); | |
| 55 return m_value == IsEnabled; | |
| 56 } | |
| 57 | |
| 58 void set(bool value, bool defaultValue) { | |
| 59 m_value = value ? IsEnabled : IsDisabled; | |
| 60 m_defaultValue = defaultValue; | |
| 61 } | |
| 62 | |
| 63 bool needsRefresh(bool defaultValue) const { | |
| 64 return m_value == NeedsRefresh || m_defaultValue != defaultValue; | |
| 65 } | |
| 66 | |
| 67 private: | |
| 68 Value m_value; | |
| 69 bool m_defaultValue; // Needs to be traked as a part of the signature since | |
| 70 // it can be changed dynamically. | |
| 71 }; | |
| 72 | |
| 73 static const char* supplementName(); | |
| 74 static ContextFeaturesCache& from(Document&); | |
| 75 | |
| 76 Entry& entryFor(ContextFeatures::FeatureType type) { | |
| 77 size_t index = static_cast<size_t>(type); | |
| 78 SECURITY_DCHECK(index < ContextFeatures::FeatureTypeSize); | |
| 79 return m_entries[index]; | |
| 80 } | |
| 81 | |
| 82 void validateAgainst(Document*); | |
| 83 | |
| 84 DEFINE_INLINE_VIRTUAL_TRACE() { Supplement<Document>::trace(visitor); } | |
| 85 | |
| 86 private: | |
| 87 explicit ContextFeaturesCache(Document& document) | |
| 88 : Supplement<Document>(document) {} | |
| 89 | |
| 90 String m_domain; | |
| 91 Entry m_entries[ContextFeatures::FeatureTypeSize]; | |
| 92 }; | |
| 93 | |
| 94 const char* ContextFeaturesCache::supplementName() { | |
| 95 return "ContextFeaturesCache"; | |
| 96 } | |
| 97 | |
| 98 ContextFeaturesCache& ContextFeaturesCache::from(Document& document) { | |
| 99 ContextFeaturesCache* cache = static_cast<ContextFeaturesCache*>( | |
| 100 Supplement<Document>::from(document, supplementName())); | |
| 101 if (!cache) { | |
| 102 cache = new ContextFeaturesCache(document); | |
| 103 Supplement<Document>::provideTo(document, supplementName(), cache); | |
| 104 } | |
| 105 | |
| 106 return *cache; | |
| 107 } | |
| 108 | |
| 109 void ContextFeaturesCache::validateAgainst(Document* document) { | |
| 110 String currentDomain = document->getSecurityOrigin()->domain(); | |
| 111 if (currentDomain == m_domain) | |
| 112 return; | |
| 113 m_domain = currentDomain; | |
| 114 for (size_t i = 0; i < ContextFeatures::FeatureTypeSize; ++i) | |
| 115 m_entries[i] = Entry(); | |
| 116 } | |
| 117 | |
| 118 bool ContextFeaturesClientImpl::isEnabled(Document* document, | |
| 119 ContextFeatures::FeatureType type, | |
| 120 bool defaultValue) { | |
| 121 DCHECK(document); | |
| 122 ContextFeaturesCache::Entry& cache = | |
| 123 ContextFeaturesCache::from(*document).entryFor(type); | |
| 124 if (cache.needsRefresh(defaultValue)) | |
| 125 cache.set(askIfIsEnabled(document, type, defaultValue), defaultValue); | |
| 126 return cache.isEnabled(); | |
| 127 } | |
| 128 | |
| 129 void ContextFeaturesClientImpl::urlDidChange(Document* document) { | |
| 130 DCHECK(document); | |
| 131 ContextFeaturesCache::from(*document).validateAgainst(document); | |
| 132 } | |
| 133 | |
| 134 bool ContextFeaturesClientImpl::askIfIsEnabled( | |
| 135 Document* document, | |
| 136 ContextFeatures::FeatureType type, | |
| 137 bool defaultValue) { | |
| 138 WebLocalFrameImpl* frame = WebLocalFrameImpl::fromFrame(document->frame()); | |
| 139 if (!frame || !frame->contentSettingsClient()) | |
| 140 return defaultValue; | |
| 141 | |
| 142 switch (type) { | |
| 143 case ContextFeatures::MutationEvents: | |
| 144 return frame->contentSettingsClient()->allowMutationEvents(defaultValue); | |
| 145 default: | |
| 146 return defaultValue; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 } // namespace blink | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2786673002:
Separate ContentSettingsClient out from LocalFrameClient (Closed)
