// Copyright 2013 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/apps/js/bindings/waiting_callback.h" #include "gin/per_context_data.h" #include "gin/per_isolate_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)); } void WaitingCallback::EnsureRegistered(v8::Isolate* isolate) { gin::PerIsolateData* data = gin::PerIsolateData::From(isolate); if (!data->GetObjectTemplate(&WaitingCallback::kWrapperInfo).IsEmpty()) { return; } v8::Handle<v8::ObjectTemplate> templ = v8::ObjectTemplate::New(isolate); templ->SetInternalFieldCount(gin::kNumberOfInternalFields); data->SetObjectTemplate(&WaitingCallback::kWrapperInfo, templ); } void WaitingCallback::OnHandleReady(MojoResult result) { wait_id_ = NULL; if (!runner_) return; gin::Runner::Scope scope(runner_.get()); v8::Isolate* isolate = runner_->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