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// 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 "content/child/navigator_connect/navigator_connect_provider.h"
#include "base/lazy_instance.h"
#include "base/single_thread_task_runner.h"
#include "base/task_runner_util.h"
#include "content/child/thread_safe_sender.h"
#include "content/child/webmessageportchannel_impl.h"
#include "content/common/navigator_connect_messages.h"
#include "content/public/common/navigator_connect_client.h"
#include "third_party/WebKit/public/platform/WebURL.h"
namespace content {
namespace {
base::LazyInstance<base::ThreadLocalPointer<NavigatorConnectProvider>>::Leaky
g_provider_tls = LAZY_INSTANCE_INITIALIZER;
NavigatorConnectProvider* const kHasBeenDeleted =
reinterpret_cast<NavigatorConnectProvider*>(0x1);
int CurrentWorkerId() {
return WorkerTaskRunner::Instance()->CurrentWorkerId();
}
} // namespace
NavigatorConnectProvider::NavigatorConnectProvider(
ThreadSafeSender* thread_safe_sender,
const scoped_refptr<base::SingleThreadTaskRunner>& main_loop)
: thread_safe_sender_(thread_safe_sender), main_loop_(main_loop) {
g_provider_tls.Pointer()->Set(this);
}
NavigatorConnectProvider::~NavigatorConnectProvider() {
g_provider_tls.Pointer()->Set(kHasBeenDeleted);
}
void NavigatorConnectProvider::connect(
const blink::WebURL& target_url,
const blink::WebString& origin,
blink::WebNavigatorConnectPortCallbacks* callbacks) {
int request_id = requests_.Add(callbacks);
thread_safe_sender_->Send(new NavigatorConnectHostMsg_Connect(
CurrentWorkerId(), request_id,
NavigatorConnectClient(target_url, GURL(origin), MSG_ROUTING_NONE)));
}
void NavigatorConnectProvider::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(NavigatorConnectProvider, msg)
IPC_MESSAGE_HANDLER(NavigatorConnectMsg_ConnectResult, OnConnectResult)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
DCHECK(handled) << "Unhandled message:" << msg.type();
}
NavigatorConnectProvider* NavigatorConnectProvider::ThreadSpecificInstance(
ThreadSafeSender* thread_safe_sender,
const scoped_refptr<base::SingleThreadTaskRunner>& main_loop) {
if (g_provider_tls.Pointer()->Get() == kHasBeenDeleted) {
NOTREACHED() << "Re-instantiating TLS NavigatorConnectProvider.";
g_provider_tls.Pointer()->Set(NULL);
}
if (g_provider_tls.Pointer()->Get())
return g_provider_tls.Pointer()->Get();
NavigatorConnectProvider* provider =
new NavigatorConnectProvider(thread_safe_sender, main_loop);
if (WorkerTaskRunner::Instance()->CurrentWorkerId())
WorkerTaskRunner::Instance()->AddStopObserver(provider);
return provider;
}
void NavigatorConnectProvider::OnConnectResult(
int thread_id,
int request_id,
const TransferredMessagePort& message_port,
int message_port_route_id,
bool allow_connect) {
blink::WebNavigatorConnectPortCallbacks* callbacks =
requests_.Lookup(request_id);
DCHECK(callbacks);
if (allow_connect) {
WebMessagePortChannelImpl* channel = new WebMessagePortChannelImpl(
message_port_route_id, message_port, main_loop_);
callbacks->onSuccess(channel);
} else {
callbacks->onError();
}
requests_.Remove(request_id);
}
void NavigatorConnectProvider::OnWorkerRunLoopStopped() {
delete this;
}
} // namespace content
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