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