| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "mojo/bindings/js/waiting_callback.h" |
| |
| #include "gin/per_context_data.h" |
| |
| namespace mojo { |
| namespace js { |
| |
| namespace { |
| |
| v8::Handle<v8::String> GetHiddenPropertyName(v8::Isolate* isolate) { |
| return gin::StringToSymbol(isolate, "::mojo::js::WaitingCallback"); |
| } |
| |
| } // namespace |
| |
| gin::WrapperInfo WaitingCallback::kWrapperInfo = { gin::kEmbedderNativeGin }; |
| |
| WaitingCallback::WaitingCallback(v8::Isolate* isolate, |
| v8::Handle<v8::Function> callback) |
| : wait_id_() { |
| v8::Handle<v8::Context> context = isolate->GetCurrentContext(); |
| runner_ = gin::PerContextData::From(context)->runner()->GetWeakPtr(); |
| GetWrapper(isolate)->SetHiddenValue(GetHiddenPropertyName(isolate), callback); |
| } |
| |
| WaitingCallback::~WaitingCallback() { |
| DCHECK(!wait_id_) << "Waiting callback was destroyed before being cancelled."; |
| } |
| |
| gin::Handle<WaitingCallback> WaitingCallback::Create( |
| v8::Isolate* isolate, v8::Handle<v8::Function> callback) { |
| return gin::CreateHandle(isolate, new WaitingCallback(isolate, callback)); |
| } |
| |
| // static |
| void WaitingCallback::CallOnHandleReady(void* closure, MojoResult result) { |
| static_cast<WaitingCallback*>(closure)->OnHandleReady(result); |
| } |
| |
| void WaitingCallback::OnHandleReady(MojoResult result) { |
| wait_id_ = 0; |
| |
| if (!runner_) |
| return; |
| |
| gin::Runner::Scope scope(runner_.get()); |
| v8::Isolate* isolate = runner_->GetContextHolder()->isolate(); |
| |
| v8::Handle<v8::Value> hidden_value = |
| GetWrapper(isolate)->GetHiddenValue(GetHiddenPropertyName(isolate)); |
| v8::Handle<v8::Function> callback; |
| CHECK(gin::ConvertFromV8(isolate, hidden_value, &callback)); |
| |
| v8::Handle<v8::Value> args[] = { gin::ConvertToV8(isolate, result) }; |
| runner_->Call(callback, runner_->global(), 1, args); |
| } |
| |
| } // namespace js |
| } // namespace mojo |