Move the serial API to extensions/.

chrome/browser/extensions/api/serial/serial_event_dispatcher.cc

-// 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 "chrome/browser/extensions/api/serial/serial_event_dispatcher.h"
-
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/extensions/api/serial/serial_connection.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/profiles/profile_manager.h"
-#include "extensions/browser/event_router.h"
-
-namespace extensions {
-
-namespace api {
-
-namespace {
-
-bool ShouldPauseOnReceiveError(serial::ReceiveError error) {
-  return error == serial::RECEIVE_ERROR_DEVICE_LOST ||
-      error == serial::RECEIVE_ERROR_SYSTEM_ERROR ||
-      error == serial::RECEIVE_ERROR_DISCONNECTED;
-}
-
-}  // namespace
-
-static base::LazyInstance<BrowserContextKeyedAPIFactory<SerialEventDispatcher> >
-    g_factory = LAZY_INSTANCE_INITIALIZER;
-
-// static
-BrowserContextKeyedAPIFactory<SerialEventDispatcher>*
-SerialEventDispatcher::GetFactoryInstance() {
-  return g_factory.Pointer();
-}
-
-// static
-SerialEventDispatcher* SerialEventDispatcher::Get(
-    content::BrowserContext* context) {
-  return BrowserContextKeyedAPIFactory<SerialEventDispatcher>::Get(context);
-}
-
-SerialEventDispatcher::SerialEventDispatcher(content::BrowserContext* context)
-    : thread_id_(SerialConnection::kThreadId),
-      profile_(Profile::FromBrowserContext(context)) {
-  ApiResourceManager<SerialConnection>* manager =
-      ApiResourceManager<SerialConnection>::Get(profile_);
-  DCHECK(manager) << "No serial connection manager.";
-  connections_ = manager->data_;
-}
-
-SerialEventDispatcher::~SerialEventDispatcher() {}
-
-SerialEventDispatcher::ReceiveParams::ReceiveParams() {}
-
-SerialEventDispatcher::ReceiveParams::~ReceiveParams() {}
-
-void SerialEventDispatcher::PollConnection(const std::string& extension_id,
-                                           int connection_id) {
-  DCHECK_CURRENTLY_ON(thread_id_);
-
-  ReceiveParams params;
-  params.thread_id = thread_id_;
-  params.profile_id = profile_;
-  params.extension_id = extension_id;
-  params.connections = connections_;
-  params.connection_id = connection_id;
-
-  StartReceive(params);
-}
-
-// static
-void SerialEventDispatcher::StartReceive(const ReceiveParams& params) {
-  DCHECK_CURRENTLY_ON(params.thread_id);
-
-  SerialConnection* connection =
-      params.connections->Get(params.extension_id, params.connection_id);
-  if (!connection)
-    return;
-  DCHECK(params.extension_id == connection->owner_extension_id());
-
-  if (connection->paused())
-    return;
-
-  connection->Receive(base::Bind(&ReceiveCallback, params));
-}
-
-// static
-void SerialEventDispatcher::ReceiveCallback(const ReceiveParams& params,
-                                            const std::string& data,
-                                            serial::ReceiveError error) {
-  DCHECK_CURRENTLY_ON(params.thread_id);
-
-  // Note that an error (e.g. timeout) does not necessarily mean that no data
-  // was read, so we may fire an onReceive regardless of any error code.
-  if (data.length() > 0) {
-    serial::ReceiveInfo receive_info;
-    receive_info.connection_id = params.connection_id;
-    receive_info.data = data;
-    scoped_ptr<base::ListValue> args = serial::OnReceive::Create(receive_info);
-    scoped_ptr<extensions::Event> event(
-        new extensions::Event(serial::OnReceive::kEventName, args.Pass()));
-    PostEvent(params, event.Pass());
-  }
-
-  if (error != serial::RECEIVE_ERROR_NONE) {
-    serial::ReceiveErrorInfo error_info;
-    error_info.connection_id = params.connection_id;
-    error_info.error = error;
-    scoped_ptr<base::ListValue> args =
-        serial::OnReceiveError::Create(error_info);
-    scoped_ptr<extensions::Event> event(
-        new extensions::Event(serial::OnReceiveError::kEventName, args.Pass()));
-    PostEvent(params, event.Pass());
-    if (ShouldPauseOnReceiveError(error)) {
-      SerialConnection* connection =
-          params.connections->Get(params.extension_id, params.connection_id);
-      if (connection)
-        connection->set_paused(true);
-    }
-  }
-
-  // Queue up the next read operation.
-  BrowserThread::PostTask(params.thread_id,
-                          FROM_HERE,
-                          base::Bind(&StartReceive, params));
-}
-
-// static
-void SerialEventDispatcher::PostEvent(const ReceiveParams& params,
-                                      scoped_ptr<extensions::Event> event) {
-  DCHECK_CURRENTLY_ON(params.thread_id);
-
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&DispatchEvent,
-                 params.profile_id,
-                 params.extension_id,
-                 base::Passed(event.Pass())));
-}
-
-// static
-void SerialEventDispatcher::DispatchEvent(void* profile_id,
-                                          const std::string& extension_id,
-                                          scoped_ptr<extensions::Event> event) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-
-  Profile* profile = reinterpret_cast<Profile*>(profile_id);
-  if (!g_browser_process->profile_manager()->IsValidProfile(profile))
-    return;
-
-  EventRouter* router = EventRouter::Get(profile);
-  if (router)
-    router->DispatchEventToExtension(extension_id, event.Pass());
-}
-
-}  // namespace api
-
-}  // namespace extensions