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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 #include "extensions/renderer/utils_native_handler.h" | 5 #include "extensions/renderer/utils_native_handler.h" |
6 | 6 |
7 #include "base/macros.h" | 7 #include "base/macros.h" |
8 #include "base/strings/stringprintf.h" | |
9 #include "extensions/renderer/script_context.h" | 8 #include "extensions/renderer/script_context.h" |
10 #include "third_party/WebKit/public/web/WebSerializedScriptValue.h" | 9 #include "third_party/WebKit/public/web/WebSerializedScriptValue.h" |
11 | 10 |
12 namespace extensions { | 11 namespace extensions { |
13 | 12 |
14 UtilsNativeHandler::UtilsNativeHandler(ScriptContext* context) | 13 UtilsNativeHandler::UtilsNativeHandler(ScriptContext* context) |
15 : ObjectBackedNativeHandler(context) { | 14 : ObjectBackedNativeHandler(context) { |
16 RouteFunction("createClassWrapper", | |
17 base::Bind(&UtilsNativeHandler::CreateClassWrapper, | |
18 base::Unretained(this))); | |
19 RouteFunction( | 15 RouteFunction( |
20 "deepCopy", | 16 "deepCopy", |
21 base::Bind(&UtilsNativeHandler::DeepCopy, base::Unretained(this))); | 17 base::Bind(&UtilsNativeHandler::DeepCopy, base::Unretained(this))); |
22 } | 18 } |
23 | 19 |
24 UtilsNativeHandler::~UtilsNativeHandler() {} | 20 UtilsNativeHandler::~UtilsNativeHandler() {} |
25 | 21 |
26 void UtilsNativeHandler::CreateClassWrapper( | |
27 const v8::FunctionCallbackInfo<v8::Value>& args) { | |
28 CHECK_EQ(3, args.Length()); | |
29 CHECK(args[0]->IsString()); | |
30 std::string name = *v8::String::Utf8Value(args[0]); | |
31 CHECK(args[1]->IsObject()); | |
32 v8::Local<v8::Object> cls = args[1].As<v8::Object>(); | |
33 CHECK(args[2]->IsObject() || args[2]->IsUndefined()); | |
34 v8::Local<v8::Value> superclass = args[2]; | |
35 | |
36 v8::HandleScope handle_scope(GetIsolate()); | |
37 // TODO(fsamuel): Consider moving the source wrapping to ModuleSystem. | |
38 v8::Local<v8::String> source = v8::String::NewFromUtf8( | |
39 GetIsolate(), | |
40 base::StringPrintf( | |
41 "(function($Object, $Function, privates, cls, superclass) {" | |
42 "'use strict';\n" | |
43 " function %s() {\n" | |
44 " var privateObj = $Object.create(cls.prototype);\n" | |
45 " $Function.apply(cls, privateObj, arguments);\n" | |
46 " privateObj.wrapper = this;\n" | |
47 " privates(this).impl = privateObj;\n" | |
48 " };\n" | |
49 " if (superclass) {\n" | |
50 " %s.prototype = Object.create(superclass.prototype);\n" | |
51 " }\n" | |
52 " return %s;\n" | |
53 "})", | |
54 name.c_str(), name.c_str(), name.c_str()).c_str()); | |
55 v8::Local<v8::Value> func_as_value = context()->module_system()->RunString( | |
56 source, v8::String::NewFromUtf8(GetIsolate(), name.c_str())); | |
57 if (func_as_value.IsEmpty() || func_as_value->IsUndefined()) { | |
58 args.GetReturnValue().SetUndefined(); | |
59 return; | |
60 } | |
61 | |
62 // TODO(fsamuel): Move privates from ModuleSystem to a shared location. | |
63 v8::Local<v8::Object> natives(context()->module_system()->NewInstance()); | |
64 CHECK(!natives.IsEmpty()); // this can happen if v8 has issues | |
65 | |
66 v8::Local<v8::Function> func = func_as_value.As<v8::Function>(); | |
67 v8::Local<v8::Value> func_args[] = { | |
68 context()->safe_builtins()->GetObjekt(), | |
69 context()->safe_builtins()->GetFunction(), | |
70 natives->Get(v8::String::NewFromUtf8(GetIsolate(), "privates", | |
71 v8::String::kInternalizedString)), | |
72 cls, | |
73 superclass}; | |
74 v8::Local<v8::Value> result; | |
75 { | |
76 v8::TryCatch try_catch(GetIsolate()); | |
77 try_catch.SetCaptureMessage(true); | |
78 result = context()->CallFunction(func, arraysize(func_args), func_args); | |
79 if (try_catch.HasCaught()) { | |
80 args.GetReturnValue().SetUndefined(); | |
81 return; | |
82 } | |
83 } | |
84 args.GetReturnValue().Set(result); | |
85 } | |
86 | |
87 void UtilsNativeHandler::DeepCopy( | 22 void UtilsNativeHandler::DeepCopy( |
88 const v8::FunctionCallbackInfo<v8::Value>& args) { | 23 const v8::FunctionCallbackInfo<v8::Value>& args) { |
89 CHECK_EQ(1, args.Length()); | 24 CHECK_EQ(1, args.Length()); |
90 args.GetReturnValue().Set( | 25 args.GetReturnValue().Set( |
91 blink::WebSerializedScriptValue::serialize(args[0]).deserialize()); | 26 blink::WebSerializedScriptValue::serialize(args[0]).deserialize()); |
92 } | 27 } |
93 | 28 |
94 } // namespace extensions | 29 } // namespace extensions |
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