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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 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 #ifndef DOMWrapperMap_h | |
| 32 #define DOMWrapperMap_h | |
| 33 | |
| 34 #include "bindings/v8/WrapperTypeInfo.h" | |
| 35 #include <v8-util.h> | |
| 36 #include <v8.h> | |
| 37 #include "wtf/HashMap.h" | |
| 38 | |
| 39 namespace WebCore { | |
| 40 | |
| 41 template<class KeyType> | |
| 42 class DOMWrapperMap { | |
| 43 public: | |
| 44 explicit DOMWrapperMap(v8::Isolate* isolate) | |
| 45 : m_isolate(isolate) | |
| 46 , m_map(isolate) | |
| 47 { | |
| 48 } | |
| 49 | |
| 50 v8::Handle<v8::Object> newLocal(KeyType* key, v8::Isolate* isolate) | |
| 51 { | |
| 52 return m_map.Get(key); | |
| 53 } | |
| 54 | |
| 55 bool setReturnValueFrom(v8::ReturnValue<v8::Value> returnValue, KeyType* key
) | |
| 56 { | |
| 57 return m_map.SetReturnValue(key, returnValue); | |
| 58 } | |
| 59 | |
| 60 void setReference(const v8::Persistent<v8::Object>& parent, KeyType* key, v8
::Isolate* isolate) | |
| 61 { | |
| 62 m_map.SetReference(key, parent); | |
| 63 } | |
| 64 | |
| 65 bool containsKey(KeyType* key) | |
| 66 { | |
| 67 return m_map.Contains(key); | |
| 68 } | |
| 69 | |
| 70 void set(KeyType* key, v8::Handle<v8::Object> wrapper, const WrapperConfigur
ation& configuration) | |
| 71 { | |
| 72 ASSERT(static_cast<KeyType*>(toNative(wrapper)) == key); | |
| 73 RELEASE_ASSERT(!containsKey(key)); // See crbug.com/368095 | |
| 74 v8::UniquePersistent<v8::Object> unique(m_isolate, wrapper); | |
| 75 configuration.configureWrapper(&unique); | |
| 76 m_map.Set(key, unique.Pass()); | |
| 77 } | |
| 78 | |
| 79 void clear() | |
| 80 { | |
| 81 m_map.Clear(); | |
| 82 } | |
| 83 | |
| 84 void removeAndDispose(KeyType* key) | |
| 85 { | |
| 86 ASSERT(containsKey(key)); | |
| 87 m_map.Remove(key); | |
| 88 } | |
| 89 | |
| 90 private: | |
| 91 class PersistentValueMapTraits { | |
| 92 public: | |
| 93 // Map traits: | |
| 94 typedef HashMap<KeyType*, v8::PersistentContainerValue> Impl; | |
| 95 typedef typename Impl::iterator Iterator; | |
| 96 static size_t Size(const Impl* impl) { return impl->size(); } | |
| 97 static bool Empty(Impl* impl) { return impl->isEmpty(); } | |
| 98 static void Swap(Impl& impl, Impl& other) { impl.swap(other); } | |
| 99 static Iterator Begin(Impl* impl) { return impl->begin(); } | |
| 100 static Iterator End(Impl* impl) { return impl->end(); } | |
| 101 static v8::PersistentContainerValue Value(Iterator& iter) | |
| 102 { | |
| 103 return iter->value; | |
| 104 } | |
| 105 static KeyType* Key(Iterator& iter) { return iter->key; } | |
| 106 static v8::PersistentContainerValue Set( | |
| 107 Impl* impl, KeyType* key, v8::PersistentContainerValue value) | |
| 108 { | |
| 109 v8::PersistentContainerValue oldValue = Get(impl, key); | |
| 110 impl->add(key, value); | |
| 111 return oldValue; | |
| 112 } | |
| 113 static v8::PersistentContainerValue Get(const Impl* impl, KeyType* key) | |
| 114 { | |
| 115 return impl->get(key); | |
| 116 } | |
| 117 | |
| 118 static v8::PersistentContainerValue Remove(Impl* impl, KeyType* key) | |
| 119 { | |
| 120 return impl->take(key); | |
| 121 } | |
| 122 | |
| 123 // Weak traits: | |
| 124 static const v8::PersistentContainerCallbackType kCallbackType = v8::kWe
ak; | |
| 125 typedef v8::PersistentValueMap<KeyType*, v8::Object, PersistentValueMapT
raits> MapType; | |
| 126 typedef MapType WeakCallbackDataType; | |
| 127 | |
| 128 static WeakCallbackDataType* WeakCallbackParameter(MapType* map, KeyType
* key, v8::Local<v8::Object>& value) | |
| 129 { | |
| 130 return map; | |
| 131 } | |
| 132 | |
| 133 static void DisposeCallbackData(WeakCallbackDataType* callbackData) { } | |
| 134 | |
| 135 static MapType* MapFromWeakCallbackData( | |
| 136 const v8::WeakCallbackData<v8::Object, WeakCallbackDataType>& data) | |
| 137 { | |
| 138 return data.GetParameter(); | |
| 139 } | |
| 140 | |
| 141 static KeyType* KeyFromWeakCallbackData( | |
| 142 const v8::WeakCallbackData<v8::Object, WeakCallbackDataType>& data) | |
| 143 { | |
| 144 return static_cast<KeyType*>(toNative(data.GetValue())); | |
| 145 } | |
| 146 | |
| 147 // Dispose traits: | |
| 148 // Generally nothing to do, but see below for a specialization for | |
| 149 // DomWrapperMap<void>. | |
| 150 static void Dispose(v8::Isolate* isolate, v8::UniquePersistent<v8::Objec
t> value, KeyType* key) { } | |
| 151 }; | |
| 152 | |
| 153 v8::Isolate* m_isolate; | |
| 154 typename PersistentValueMapTraits::MapType m_map; | |
| 155 }; | |
| 156 | |
| 157 template <> | |
| 158 inline void DOMWrapperMap<void>::PersistentValueMapTraits::Dispose( | |
| 159 v8::Isolate* isolate, | |
| 160 v8::UniquePersistent<v8::Object> value, | |
| 161 void* key) | |
| 162 { | |
| 163 RELEASE_ASSERT(!value.IsEmpty()); // See crbug.com/368095. | |
| 164 releaseObject(v8::Local<v8::Object>::New(isolate, value)); | |
| 165 } | |
| 166 | |
| 167 } // namespace WebCore | |
| 168 | |
| 169 #endif // DOMWrapperMap_h | |
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