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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef GIN_WRAPPABLE_H_ | 5 #ifndef GIN_WRAPPABLE_H_ |
6 #define GIN_WRAPPABLE_H_ | 6 #define GIN_WRAPPABLE_H_ |
7 | 7 |
8 #include <type_traits> | 8 #include <type_traits> |
9 | 9 |
10 #include "base/macros.h" | 10 #include "base/macros.h" |
11 #include "base/template_util.h" | |
12 #include "gin/converter.h" | 11 #include "gin/converter.h" |
13 #include "gin/gin_export.h" | 12 #include "gin/gin_export.h" |
14 #include "gin/public/wrapper_info.h" | 13 #include "gin/public/wrapper_info.h" |
15 | 14 |
16 namespace gin { | 15 namespace gin { |
17 | 16 |
18 // Wrappable is a base class for C++ objects that have corresponding v8 wrapper | 17 // Wrappable is a base class for C++ objects that have corresponding v8 wrapper |
19 // objects. To retain a Wrappable object on the stack, use a gin::Handle. | 18 // objects. To retain a Wrappable object on the stack, use a gin::Handle. |
20 // | 19 // |
21 // USAGE: | 20 // USAGE: |
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100 | 99 |
101 private: | 100 private: |
102 DISALLOW_COPY_AND_ASSIGN(Wrappable); | 101 DISALLOW_COPY_AND_ASSIGN(Wrappable); |
103 }; | 102 }; |
104 | 103 |
105 | 104 |
106 // This converter handles any subclass of Wrappable. | 105 // This converter handles any subclass of Wrappable. |
107 template <typename T> | 106 template <typename T> |
108 struct Converter<T*, | 107 struct Converter<T*, |
109 typename std::enable_if< | 108 typename std::enable_if< |
110 base::is_convertible<T*, WrappableBase*>::value>::type> { | 109 std::is_convertible<T*, WrappableBase*>::value>::type> { |
111 static v8::Local<v8::Value> ToV8(v8::Isolate* isolate, T* val) { | 110 static v8::Local<v8::Value> ToV8(v8::Isolate* isolate, T* val) { |
112 return val->GetWrapper(isolate); | 111 return val->GetWrapper(isolate); |
113 } | 112 } |
114 | 113 |
115 static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val, T** out) { | 114 static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val, T** out) { |
116 *out = static_cast<T*>(static_cast<WrappableBase*>( | 115 *out = static_cast<T*>(static_cast<WrappableBase*>( |
117 internal::FromV8Impl(isolate, val, &T::kWrapperInfo))); | 116 internal::FromV8Impl(isolate, val, &T::kWrapperInfo))); |
118 return *out != NULL; | 117 return *out != NULL; |
119 } | 118 } |
120 }; | 119 }; |
121 | 120 |
122 } // namespace gin | 121 } // namespace gin |
123 | 122 |
124 #endif // GIN_WRAPPABLE_H_ | 123 #endif // GIN_WRAPPABLE_H_ |
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