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Side by Side Diff: mojo/edk/js/handle.h

Issue 2405903003: Make //mojo/edk/js a component. (Closed)
Patch Set: Created 4 years, 2 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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 MOJO_EDK_JS_HANDLE_H_ 5 #ifndef MOJO_EDK_JS_HANDLE_H_
6 #define MOJO_EDK_JS_HANDLE_H_ 6 #define MOJO_EDK_JS_HANDLE_H_
7 7
8 #include <stdint.h> 8 #include <stdint.h>
9 9
10 #include "base/observer_list.h" 10 #include "base/observer_list.h"
11 #include "gin/converter.h" 11 #include "gin/converter.h"
12 #include "gin/handle.h" 12 #include "gin/handle.h"
13 #include "gin/wrappable.h" 13 #include "gin/wrappable.h"
14 #include "mojo/edk/js/js_export.h"
14 #include "mojo/public/cpp/system/core.h" 15 #include "mojo/public/cpp/system/core.h"
15 16
16 namespace mojo { 17 namespace mojo {
17 namespace edk { 18 namespace edk {
18 namespace js { 19 namespace js {
19 20
20 class HandleCloseObserver; 21 class HandleCloseObserver;
21 22
22 // Wrapper for mojo Handles exposed to JavaScript. This ensures the Handle 23 // Wrapper for mojo Handles exposed to JavaScript. This ensures the Handle
23 // is Closed when its JS object is garbage collected. 24 // is Closed when its JS object is garbage collected.
24 class HandleWrapper : public gin::Wrappable<HandleWrapper> { 25 class MOJO_JS_EXPORT HandleWrapper : public gin::Wrappable<HandleWrapper> {
25 public: 26 public:
26 static gin::WrapperInfo kWrapperInfo; 27 static gin::WrapperInfo kWrapperInfo;
27 28
28 static gin::Handle<HandleWrapper> Create(v8::Isolate* isolate, 29 static gin::Handle<HandleWrapper> Create(v8::Isolate* isolate,
29 MojoHandle handle) { 30 MojoHandle handle) {
30 return gin::CreateHandle(isolate, new HandleWrapper(handle)); 31 return gin::CreateHandle(isolate, new HandleWrapper(handle));
31 } 32 }
32 33
33 mojo::Handle get() const { return handle_.get(); } 34 mojo::Handle get() const { return handle_.get(); }
34 mojo::Handle release() { return handle_.release(); } 35 mojo::Handle release() { return handle_.release(); }
(...skipping 14 matching lines...) Expand all
49 } // namespace js 50 } // namespace js
50 } // namespace edk 51 } // namespace edk
51 } // namespace mojo 52 } // namespace mojo
52 53
53 namespace gin { 54 namespace gin {
54 55
55 // Note: It's important to use this converter rather than the one for 56 // Note: It's important to use this converter rather than the one for
56 // MojoHandle, since that will do a simple int32_t conversion. It's unfortunate 57 // MojoHandle, since that will do a simple int32_t conversion. It's unfortunate
57 // there's no way to prevent against accidental use. 58 // there's no way to prevent against accidental use.
58 // TODO(mpcomplete): define converters for all Handle subtypes. 59 // TODO(mpcomplete): define converters for all Handle subtypes.
59 template<> 60 template <>
60 struct Converter<mojo::Handle> { 61 struct MOJO_JS_EXPORT Converter<mojo::Handle> {
61 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, 62 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
62 const mojo::Handle& val); 63 const mojo::Handle& val);
63 static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val, 64 static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val,
64 mojo::Handle* out); 65 mojo::Handle* out);
65 }; 66 };
66 67
67 template<> 68 template <>
68 struct Converter<mojo::MessagePipeHandle> { 69 struct MOJO_JS_EXPORT Converter<mojo::MessagePipeHandle> {
69 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, 70 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
70 mojo::MessagePipeHandle val); 71 mojo::MessagePipeHandle val);
71 static bool FromV8(v8::Isolate* isolate, 72 static bool FromV8(v8::Isolate* isolate,
72 v8::Handle<v8::Value> val, 73 v8::Handle<v8::Value> val,
73 mojo::MessagePipeHandle* out); 74 mojo::MessagePipeHandle* out);
74 }; 75 };
75 76
76 // We need to specialize the normal gin::Handle converter in order to handle 77 // We need to specialize the normal gin::Handle converter in order to handle
77 // converting |null| to a wrapper for an empty mojo::Handle. 78 // converting |null| to a wrapper for an empty mojo::Handle.
78 template <> 79 template <>
79 struct Converter<gin::Handle<mojo::edk::js::HandleWrapper>> { 80 struct MOJO_JS_EXPORT Converter<gin::Handle<mojo::edk::js::HandleWrapper>> {
80 static v8::Handle<v8::Value> ToV8( 81 static v8::Handle<v8::Value> ToV8(
81 v8::Isolate* isolate, 82 v8::Isolate* isolate,
82 const gin::Handle<mojo::edk::js::HandleWrapper>& val) { 83 const gin::Handle<mojo::edk::js::HandleWrapper>& val) {
83 return val.ToV8(); 84 return val.ToV8();
84 } 85 }
85 86
86 static bool FromV8(v8::Isolate* isolate, 87 static bool FromV8(v8::Isolate* isolate,
87 v8::Handle<v8::Value> val, 88 v8::Handle<v8::Value> val,
88 gin::Handle<mojo::edk::js::HandleWrapper>* out) { 89 gin::Handle<mojo::edk::js::HandleWrapper>* out) {
89 if (val->IsNull()) { 90 if (val->IsNull()) {
90 *out = mojo::edk::js::HandleWrapper::Create(isolate, MOJO_HANDLE_INVALID); 91 *out = mojo::edk::js::HandleWrapper::Create(isolate, MOJO_HANDLE_INVALID);
91 return true; 92 return true;
92 } 93 }
93 94
94 mojo::edk::js::HandleWrapper* object = NULL; 95 mojo::edk::js::HandleWrapper* object = NULL;
95 if (!Converter<mojo::edk::js::HandleWrapper*>::FromV8(isolate, val, 96 if (!Converter<mojo::edk::js::HandleWrapper*>::FromV8(isolate, val,
96 &object)) { 97 &object)) {
97 return false; 98 return false;
98 } 99 }
99 *out = gin::Handle<mojo::edk::js::HandleWrapper>(val, object); 100 *out = gin::Handle<mojo::edk::js::HandleWrapper>(val, object);
100 return true; 101 return true;
101 } 102 }
102 }; 103 };
103 104
104 } // namespace gin 105 } // namespace gin
105 106
106 #endif // MOJO_EDK_JS_HANDLE_H_ 107 #endif // MOJO_EDK_JS_HANDLE_H_
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