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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 V8PerContextData_h | |
32 #define V8PerContextData_h | |
33 | |
34 #include "bindings/v8/CustomElementBinding.h" | |
35 #include "bindings/v8/ScopedPersistent.h" | |
36 #include "bindings/v8/V8PersistentValueMap.h" | |
37 #include "bindings/v8/WrapperTypeInfo.h" | |
38 #include "gin/public/context_holder.h" | |
39 #include "gin/public/gin_embedders.h" | |
40 #include <v8.h> | |
41 #include "wtf/HashMap.h" | |
42 #include "wtf/PassOwnPtr.h" | |
43 #include "wtf/Vector.h" | |
44 #include "wtf/text/AtomicString.h" | |
45 #include "wtf/text/AtomicStringHash.h" | |
46 | |
47 namespace WebCore { | |
48 | |
49 class CustomElementDefinition; | |
50 class V8DOMActivityLogger; | |
51 class V8PerContextData; | |
52 struct V8NPObject; | |
53 typedef WTF::Vector<V8NPObject*> V8NPObjectVector; | |
54 typedef WTF::HashMap<int, V8NPObjectVector> V8NPObjectMap; | |
55 | |
56 enum V8ContextEmbedderDataField { | |
57 v8ContextDebugIdIndex = static_cast<int>(gin::kDebugIdIndex), | |
58 v8ContextPerContextDataIndex = static_cast<int>(gin::kPerContextDataStartInd
ex + gin::kEmbedderBlink), | |
59 }; | |
60 | |
61 class V8PerContextData { | |
62 public: | |
63 static PassOwnPtr<V8PerContextData> create(v8::Handle<v8::Context>); | |
64 | |
65 static V8PerContextData* from(v8::Handle<v8::Context>); | |
66 | |
67 ~V8PerContextData(); | |
68 | |
69 v8::Handle<v8::Context> context() { return m_context.newLocal(m_isolate); } | |
70 | |
71 // To create JS Wrapper objects, we create a cache of a 'boiler plate' | |
72 // object, and then simply Clone that object each time we need a new one. | |
73 // This is faster than going through the full object creation process. | |
74 v8::Local<v8::Object> createWrapperFromCache(const WrapperTypeInfo* type) | |
75 { | |
76 v8::Local<v8::Object> boilerplate = m_wrapperBoilerplates.Get(type); | |
77 return !boilerplate.IsEmpty() ? boilerplate->Clone() : createWrapperFrom
CacheSlowCase(type); | |
78 } | |
79 | |
80 v8::Local<v8::Function> constructorForType(const WrapperTypeInfo* type) | |
81 { | |
82 v8::Local<v8::Function> function = m_constructorMap.Get(type); | |
83 return (!function.IsEmpty()) ? function : constructorForTypeSlowCase(typ
e); | |
84 } | |
85 | |
86 v8::Local<v8::Object> prototypeForType(const WrapperTypeInfo*); | |
87 | |
88 V8NPObjectMap* v8NPObjectMap() { return &m_v8NPObjectMap; } | |
89 | |
90 void addCustomElementBinding(CustomElementDefinition*, PassOwnPtr<CustomElem
entBinding>); | |
91 void clearCustomElementBinding(CustomElementDefinition*); | |
92 CustomElementBinding* customElementBinding(CustomElementDefinition*); | |
93 | |
94 V8DOMActivityLogger* activityLogger() const { return m_activityLogger; } | |
95 void setActivityLogger(V8DOMActivityLogger* activityLogger) { m_activityLogg
er = activityLogger; } | |
96 | |
97 v8::Handle<v8::Value> compiledPrivateScript(String); | |
98 void setCompiledPrivateScript(String, v8::Handle<v8::Value>); | |
99 | |
100 private: | |
101 V8PerContextData(v8::Handle<v8::Context>); | |
102 | |
103 v8::Local<v8::Object> createWrapperFromCacheSlowCase(const WrapperTypeInfo*)
; | |
104 v8::Local<v8::Function> constructorForTypeSlowCase(const WrapperTypeInfo*); | |
105 | |
106 v8::Isolate* m_isolate; | |
107 | |
108 // For each possible type of wrapper, we keep a boilerplate object. | |
109 // The boilerplate is used to create additional wrappers of the same type. | |
110 typedef V8PersistentValueMap<const WrapperTypeInfo*, v8::Object, false> Wrap
perBoilerplateMap; | |
111 WrapperBoilerplateMap m_wrapperBoilerplates; | |
112 | |
113 typedef V8PersistentValueMap<const WrapperTypeInfo*, v8::Function, false> Co
nstructorMap; | |
114 ConstructorMap m_constructorMap; | |
115 | |
116 V8NPObjectMap m_v8NPObjectMap; | |
117 | |
118 OwnPtr<gin::ContextHolder> m_contextHolder; | |
119 | |
120 ScopedPersistent<v8::Context> m_context; | |
121 ScopedPersistent<v8::Value> m_errorPrototype; | |
122 | |
123 typedef WTF::HashMap<CustomElementDefinition*, OwnPtr<CustomElementBinding>
> CustomElementBindingMap; | |
124 OwnPtr<CustomElementBindingMap> m_customElementBindings; | |
125 | |
126 // This is owned by a static hash map in V8DOMActivityLogger. | |
127 V8DOMActivityLogger* m_activityLogger; | |
128 | |
129 V8PersistentValueMap<String, v8::Value, false> m_compiledPrivateScript; | |
130 }; | |
131 | |
132 class V8PerContextDebugData { | |
133 public: | |
134 static bool setContextDebugData(v8::Handle<v8::Context>, const char* worldNa
me, int debugId); | |
135 static int contextDebugId(v8::Handle<v8::Context>); | |
136 }; | |
137 | |
138 } // namespace WebCore | |
139 | |
140 #endif // V8PerContextData_h | |
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