| // 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/apps/js/js_app.h" |
| |
| #include "base/bind.h" |
| #include "gin/array_buffer.h" |
| #include "gin/converter.h" |
| #include "mojo/apps/js/application_delegate_impl.h" |
| #include "mojo/apps/js/mojo_module.h" |
| #include "mojo/common/data_pipe_utils.h" |
| |
| namespace mojo { |
| namespace apps { |
| |
| JSApp::JSApp(ApplicationDelegateImpl* content_handler_app, |
| const std::string& url, |
| URLResponsePtr content) |
| : content_handler_app_(content_handler_app), |
| url_(url), |
| content_(content.Pass()), |
| thread_("Mojo JS " + url), |
| content_handler_task_runner_( |
| base::MessageLoop::current()->task_runner()) { |
| CHECK(on_content_handler_thread()); |
| runner_delegate_.AddBuiltinModule(Mojo::kModuleName, |
| base::Bind(Mojo::GetModule, this)); |
| } |
| |
| JSApp::~JSApp() { |
| } |
| |
| bool JSApp::Start() { |
| CHECK(!js_app_task_runner_.get() && on_content_handler_thread()); |
| base::Thread::Options thread_options(base::MessageLoop::TYPE_IO, 0); |
| thread_.StartWithOptions(thread_options); |
| |
| // TODO(hansmuller): check thread_.StartWithOptions() return value. |
| // TODO(hansmuller): need to funnel Run() failures back to the caller. |
| |
| thread_.message_loop()->PostTask( |
| FROM_HERE, base::Bind(&JSApp::Run, base::Unretained(this))); |
| return true; |
| } |
| |
| void JSApp::Quit() { |
| CHECK(on_js_app_thread()); |
| |
| // The terminate operation is posted to the message_loop so that |
| // the shell_runner isn't destroyed before this JS function returns. |
| thread_.message_loop()->PostTask( |
| FROM_HERE, base::Bind(&JSApp::Terminate, base::Unretained(this))); |
| } |
| |
| Handle JSApp::ConnectToService(const std::string& application_url, |
| const std::string& interface_name) { |
| CHECK(on_js_app_thread()); |
| MessagePipe pipe; |
| |
| content_handler_task_runner_->PostTask( |
| FROM_HERE, |
| base::Bind(&ApplicationDelegateImpl::ConnectToService, |
| base::Unretained(content_handler_app_), |
| base::Passed(pipe.handle1.Pass()), |
| application_url, |
| interface_name)); |
| |
| return pipe.handle0.release(); |
| } |
| |
| void JSApp::Run() { |
| CHECK(!js_app_task_runner_.get() && !on_content_handler_thread()); |
| js_app_task_runner_ = base::MessageLoop::current()->task_runner(); |
| |
| // TODO(hansmuller): check the return value and fail gracefully. |
| std::string module; |
| common::BlockingCopyToString(content_->body.Pass(), &module); |
| |
| gin::IsolateHolder::Initialize(gin::IsolateHolder::kStrictMode, |
| gin::ArrayBufferAllocator::SharedInstance()); |
| isolate_holder_.reset(new gin::IsolateHolder()); |
| isolate_holder_->AddRunMicrotasksObserver(); |
| |
| shell_runner_.reset( |
| new gin::ShellRunner(&runner_delegate_, isolate_holder_->isolate())); |
| |
| // TODO(hansmuller): exiting this scope here is OK? |
| gin::Runner::Scope scope(shell_runner_.get()); |
| shell_runner_->Run(module.c_str(), url_.c_str()); |
| } |
| |
| void JSApp::Terminate() { |
| isolate_holder_->RemoveRunMicrotasksObserver(); |
| shell_runner_.reset(NULL); |
| |
| // This JSApp's thread must be stopped on the thread that started it. Ask the |
| // content_handler_app_ to erase its AppVector entry for this app, which |
| // implicitly destroys this JSApp and stops its thread. |
| content_handler_task_runner_->PostTask( |
| FROM_HERE, |
| base::Bind(&ApplicationDelegateImpl::QuitJSApp, |
| base::Unretained(content_handler_app_), |
| base::Unretained(this))); |
| } |
| |
| bool JSApp::on_content_handler_thread() const { |
| return content_handler_task_runner_.get() && |
| content_handler_task_runner_.get() == |
| base::MessageLoop::current()->task_runner().get(); |
| } |
| |
| bool JSApp::on_js_app_thread() const { |
| return js_app_task_runner_.get() && |
| js_app_task_runner_.get() == |
| base::MessageLoop::current()->task_runner().get(); |
| } |
| |
| } // namespace apps |
| } // namespace mojo |