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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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