network_state_notifier.cc revision dc0f95d653279beabeb9817299e2902918ba123e 
1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/chromeos/network_state_notifier.h"
6
7#include "base/message_loop.h"
8#include "base/time.h"
9#include "chrome/browser/chromeos/cros/cros_library.h"
10#include "content/browser/browser_thread.h"
11#include "content/common/notification_service.h"
12#include "content/common/notification_type.h"
13
14namespace chromeos {
15
16using base::Time;
17using base::TimeDelta;
18
19// static
20NetworkStateNotifier* NetworkStateNotifier::GetInstance() {
21  return Singleton<NetworkStateNotifier>::get();
22}
23
24// static
25TimeDelta NetworkStateNotifier::GetOfflineDuration() {
26  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
27  // TODO(oshima): make this instance method so that
28  // we can mock this for ui_tests.
29  // http://crbug.com/4825 .
30  return base::Time::Now() - GetInstance()->offline_start_time_;
31}
32
33NetworkStateNotifier::NetworkStateNotifier()
34    : ALLOW_THIS_IN_INITIALIZER_LIST(task_factory_(this)),
35      state_(RetrieveState()),
36      offline_start_time_(Time::Now()) {
37  // Note that this gets added as a NetworkManagerObserver
38  // in browser_init.cc
39}
40
41NetworkStateNotifier::~NetworkStateNotifier() {
42  // Let the NetworkManagerObserver leak to avoid a DCHECK
43  // failure in CommandLine::ForCurrentProcess.
44//  if (CrosLibrary::Get()->EnsureLoaded())
45//    CrosLibrary::Get()->GetNetworkLibrary()->
46//        RemoveNetworkManagerObserver(this);
47}
48
49void NetworkStateNotifier::OnNetworkManagerChanged(NetworkLibrary* cros) {
50  DCHECK(CrosLibrary::Get()->EnsureLoaded());
51  BrowserThread::PostTask(
52      BrowserThread::UI, FROM_HERE,
53      task_factory_.NewRunnableMethod(
54          &NetworkStateNotifier::UpdateNetworkState,
55          RetrieveState()));
56}
57
58void NetworkStateNotifier::UpdateNetworkState(
59    NetworkStateDetails::State new_state) {
60  DVLOG(1) << "UpdateNetworkState: new=" << new_state << ", old=" << state_;
61  if (state_ == NetworkStateDetails::CONNECTED &&
62      new_state != NetworkStateDetails::CONNECTED) {
63    offline_start_time_ = Time::Now();
64  }
65
66  state_ = new_state;
67  NetworkStateDetails details(state_);
68  NotificationService::current()->Notify(
69      NotificationType::NETWORK_STATE_CHANGED,
70      NotificationService::AllSources(),
71      Details<NetworkStateDetails>(&details));
72};
73
74// static
75NetworkStateDetails::State NetworkStateNotifier::RetrieveState() {
76  // Running on desktop means always connected, for now.
77  if (!CrosLibrary::Get()->EnsureLoaded())
78    return NetworkStateDetails::CONNECTED;
79  NetworkLibrary* cros = CrosLibrary::Get()->GetNetworkLibrary();
80  if (cros->Connected()) {
81    return NetworkStateDetails::CONNECTED;
82  } else if (cros->Connecting()) {
83    return NetworkStateDetails::CONNECTING;
84  } else {
85    return NetworkStateDetails::DISCONNECTED;
86  }
87}
88
89
90}  // namespace chromeos
91