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Side by Side Diff: sky/engine/bindings/core/v8/V8DOMWrapper.h

Issue 922053002: Remove unused V8 integration code in Sky (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 10 months ago
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1 /*
2 * Copyright (C) 2009 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 SKY_ENGINE_BINDINGS_CORE_V8_V8DOMWRAPPER_H_
32 #define SKY_ENGINE_BINDINGS_CORE_V8_V8DOMWRAPPER_H_
33
34 #include "sky/engine/bindings/core/v8/DOMDataStore.h"
35 #include "sky/engine/bindings/core/v8/ScriptWrappable.h"
36 #include "sky/engine/wtf/PassRefPtr.h"
37 #include "sky/engine/wtf/RawPtr.h"
38 #include "sky/engine/wtf/text/AtomicString.h"
39 #include "v8/include/v8.h"
40
41 namespace blink {
42
43 class Node;
44 struct WrapperTypeInfo;
45
46 class V8DOMWrapper {
47 public:
48 static v8::Local<v8::Object> createWrapper(v8::Handle<v8::Object> creationCo ntext, const WrapperTypeInfo*, ScriptWrappableBase* internalPointer, v8::Isolate *);
49
50 template<typename V8T, typename T>
51 static v8::Handle<v8::Object> associateObjectWithWrapper(PassRefPtr<T>, cons t WrapperTypeInfo*, v8::Handle<v8::Object>, v8::Isolate*);
52 template<typename V8T, typename T>
53 static v8::Handle<v8::Object> associateObjectWithWrapper(RawPtr<T> object, c onst WrapperTypeInfo* wrapperTypeInfo, v8::Handle<v8::Object> wrapper, v8::Isola te* isolate)
54 {
55 return associateObjectWithWrapper<V8T, T>(object.get(), wrapperTypeInfo, wrapper, isolate);
56 }
57 template<typename V8T, typename T>
58 static v8::Handle<v8::Object> associateObjectWithWrapper(T*, const WrapperTy peInfo*, v8::Handle<v8::Object>, v8::Isolate*);
59 static v8::Handle<v8::Object> associateObjectWithWrapperNonTemplate(ScriptWr appable*, const WrapperTypeInfo*, v8::Handle<v8::Object>, v8::Isolate*);
60 static v8::Handle<v8::Object> associateObjectWithWrapperNonTemplate(Node*, c onst WrapperTypeInfo*, v8::Handle<v8::Object>, v8::Isolate*);
61 static void setNativeInfo(v8::Handle<v8::Object>, const WrapperTypeInfo*, Sc riptWrappableBase* internalPointer);
62 static void setNativeInfoForHiddenWrapper(v8::Handle<v8::Object>, const Wrap perTypeInfo*, ScriptWrappableBase* internalPointer);
63 static void clearNativeInfo(v8::Handle<v8::Object>, const WrapperTypeInfo*);
64
65 static bool isDOMWrapper(v8::Handle<v8::Value>);
66 };
67
68 inline void V8DOMWrapper::setNativeInfo(v8::Handle<v8::Object> wrapper, const Wr apperTypeInfo* wrapperTypeInfo, ScriptWrappableBase* internalPointer)
69 {
70 ASSERT(wrapper->InternalFieldCount() >= 2);
71 ASSERT(internalPointer);
72 ASSERT(wrapperTypeInfo);
73 wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, internalP ointer);
74 wrapper->SetAlignedPointerInInternalField(v8DOMWrapperTypeIndex, const_cast< WrapperTypeInfo*>(wrapperTypeInfo));
75 }
76
77 inline void V8DOMWrapper::setNativeInfoForHiddenWrapper(v8::Handle<v8::Object> w rapper, const WrapperTypeInfo* wrapperTypeInfo, ScriptWrappableBase* internalPoi nter)
78 {
79 // see WindowProxy::installDOMWindow() comment for why this version is neede d and safe.
80 ASSERT(wrapper->InternalFieldCount() >= 2);
81 ASSERT(internalPointer);
82 ASSERT(wrapperTypeInfo);
83 wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, internalP ointer);
84 wrapper->SetAlignedPointerInInternalField(v8DOMWrapperTypeIndex, const_cast< WrapperTypeInfo*>(wrapperTypeInfo));
85 }
86
87 inline void V8DOMWrapper::clearNativeInfo(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* wrapperTypeInfo)
88 {
89 ASSERT(wrapper->InternalFieldCount() >= 2);
90 ASSERT(wrapperTypeInfo);
91 // clearNativeInfo() is used only by NP objects, which are not garbage colle cted.
92 wrapper->SetAlignedPointerInInternalField(v8DOMWrapperTypeIndex, const_cast< WrapperTypeInfo*>(wrapperTypeInfo));
93 wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, 0);
94 }
95
96 template<typename V8T, typename T>
97 inline v8::Handle<v8::Object> V8DOMWrapper::associateObjectWithWrapper(PassRefPt r<T> object, const WrapperTypeInfo* wrapperTypeInfo, v8::Handle<v8::Object> wrap per, v8::Isolate* isolate)
98 {
99 setNativeInfo(wrapper, wrapperTypeInfo, V8T::toScriptWrappableBase(object.ge t()));
100 ASSERT(isDOMWrapper(wrapper));
101 DOMDataStore::setWrapper<V8T>(object.leakRef(), wrapper, isolate, wrapperTyp eInfo);
102 return wrapper;
103 }
104
105 inline v8::Handle<v8::Object> V8DOMWrapper::associateObjectWithWrapperNonTemplat e(ScriptWrappable* impl, const WrapperTypeInfo* wrapperTypeInfo, v8::Handle<v8:: Object> wrapper, v8::Isolate* isolate)
106 {
107 wrapperTypeInfo->refObject(impl->toScriptWrappableBase());
108 setNativeInfo(wrapper, wrapperTypeInfo, impl->toScriptWrappableBase());
109 ASSERT(isDOMWrapper(wrapper));
110 DOMDataStore::setWrapperNonTemplate(impl, wrapper, isolate, wrapperTypeInfo) ;
111 return wrapper;
112 }
113
114 inline v8::Handle<v8::Object> V8DOMWrapper::associateObjectWithWrapperNonTemplat e(Node* node, const WrapperTypeInfo* wrapperTypeInfo, v8::Handle<v8::Object> wra pper, v8::Isolate* isolate)
115 {
116 wrapperTypeInfo->refObject(ScriptWrappable::fromObject(node)->toScriptWrappa bleBase());
117 setNativeInfo(wrapper, wrapperTypeInfo, ScriptWrappable::fromObject(node)->t oScriptWrappableBase());
118 ASSERT(isDOMWrapper(wrapper));
119 DOMDataStore::setWrapperNonTemplate(node, wrapper, isolate, wrapperTypeInfo) ;
120 return wrapper;
121 }
122
123 class V8WrapperInstantiationScope {
124 public:
125 V8WrapperInstantiationScope(v8::Handle<v8::Object> creationContext, v8::Isol ate* isolate)
126 : m_didEnterContext(false)
127 , m_context(isolate->GetCurrentContext())
128 {
129 // creationContext should not be empty. Because if we have an
130 // empty creationContext, we will end up creating
131 // a new object in the context currently entered. This is wrong.
132 RELEASE_ASSERT(!creationContext.IsEmpty());
133 v8::Handle<v8::Context> contextForWrapper = creationContext->CreationCon text();
134 // For performance, we enter the context only if the currently running c ontext
135 // is different from the context that we are about to enter.
136 if (contextForWrapper == m_context)
137 return;
138 m_context = v8::Local<v8::Context>::New(isolate, contextForWrapper);
139 m_didEnterContext = true;
140 m_context->Enter();
141 }
142
143 ~V8WrapperInstantiationScope()
144 {
145 if (!m_didEnterContext)
146 return;
147 m_context->Exit();
148 }
149
150 v8::Handle<v8::Context> context() const { return m_context; }
151
152 private:
153 bool m_didEnterContext;
154 v8::Handle<v8::Context> m_context;
155 };
156
157 } // namespace blink
158
159 #endif // SKY_ENGINE_BINDINGS_CORE_V8_V8DOMWRAPPER_H_
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