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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "mojo/public/bindings/js/waiting_callback.h" | |
6 | |
7 #include "gin/per_context_data.h" | |
8 #include "gin/per_isolate_data.h" | |
9 | |
10 namespace mojo { | |
11 namespace js { | |
12 | |
13 namespace { | |
14 | |
15 v8::Handle<v8::String> GetHiddenPropertyName(v8::Isolate* isolate) { | |
16 return gin::StringToSymbol(isolate, "::mojo::js::WaitingCallback"); | |
17 } | |
18 | |
19 } // namespace | |
20 | |
21 WaitingCallback::WaitingCallback(v8::Isolate* isolate, | |
22 v8::Handle<v8::Function> callback) | |
23 : wait_id_() { | |
24 v8::Handle<v8::Context> context = isolate->GetCurrentContext(); | |
25 runner_ = gin::PerContextData::From(context)->runner()->GetWeakPtr(); | |
26 GetWrapper(isolate)->SetHiddenValue(GetHiddenPropertyName(isolate), callback); | |
27 } | |
28 | |
29 WaitingCallback::~WaitingCallback() { | |
30 DCHECK(!wait_id_) << "Waiting callback was destroyed before being cancelled."; | |
31 } | |
32 | |
33 scoped_refptr<WaitingCallback> WaitingCallback::Create( | |
34 v8::Isolate* isolate, v8::Handle<v8::Function> callback) { | |
35 return make_scoped_refptr(new WaitingCallback(isolate, callback)); | |
36 } | |
37 | |
38 gin::WrapperInfo WaitingCallback::kWrapperInfo = { gin::kEmbedderNativeGin }; | |
39 | |
40 gin::WrapperInfo* WaitingCallback::GetWrapperInfo() { | |
41 return &kWrapperInfo; | |
42 } | |
43 | |
44 void WaitingCallback::EnsureRegistered(v8::Isolate* isolate) { | |
45 gin::PerIsolateData* data = gin::PerIsolateData::From(isolate); | |
46 if (!data->GetObjectTemplate(&kWrapperInfo).IsEmpty()) | |
47 return; | |
48 v8::Handle<v8::ObjectTemplate> templ = v8::ObjectTemplate::New(isolate); | |
49 templ->SetInternalFieldCount(gin::kNumberOfInternalFields); | |
50 data->SetObjectTemplate(&kWrapperInfo, templ); | |
51 } | |
52 | |
53 void WaitingCallback::OnHandleReady(MojoResult result) { | |
54 wait_id_ = NULL; | |
55 | |
56 if (!runner_) | |
57 return; | |
58 | |
59 gin::Runner::Scope scope(runner_.get()); | |
60 v8::Isolate* isolate = runner_->isolate(); | |
61 | |
62 v8::Handle<v8::Value> hidden_value = | |
63 GetWrapper(isolate)->GetHiddenValue(GetHiddenPropertyName(isolate)); | |
64 v8::Handle<v8::Function> callback; | |
65 CHECK(gin::ConvertFromV8(isolate, hidden_value, &callback)); | |
66 | |
67 v8::Handle<v8::Value> args[] = { gin::ConvertToV8(isolate, result) }; | |
68 runner_->Call(callback, runner_->global(), 1, args); | |
69 } | |
70 | |
71 } // namespace js | |
72 } // namespace mojo | |
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