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
14 namespace chromeos {
15
16 using base::Time;
17 using base::TimeDelta;
18
19 // static
GetInstance()20 NetworkStateNotifier* NetworkStateNotifier::GetInstance() {
21 return Singleton<NetworkStateNotifier>::get();
22 }
23
24 // static
GetOfflineDuration()25 TimeDelta 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
NetworkStateNotifier()33 NetworkStateNotifier::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
~NetworkStateNotifier()41 NetworkStateNotifier::~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
OnNetworkManagerChanged(NetworkLibrary * cros)49 void NetworkStateNotifier::OnNetworkManagerChanged(NetworkLibrary* cros) {
50 DCHECK(CrosLibrary::Get()->EnsureLoaded());
51 // Update the state 500ms later using UI thread.
52 // See http://crosbug.com/4558
53 BrowserThread::PostDelayedTask(
54 BrowserThread::UI, FROM_HERE,
55 task_factory_.NewRunnableMethod(
56 &NetworkStateNotifier::UpdateNetworkState,
57 RetrieveState()),
58 500);
59 }
60
UpdateNetworkState(NetworkStateDetails::State new_state)61 void NetworkStateNotifier::UpdateNetworkState(
62 NetworkStateDetails::State new_state) {
63 DVLOG(1) << "UpdateNetworkState: new=" << new_state << ", old=" << state_;
64 if (state_ == NetworkStateDetails::CONNECTED &&
65 new_state != NetworkStateDetails::CONNECTED) {
66 offline_start_time_ = Time::Now();
67 }
68
69 state_ = new_state;
70 NetworkStateDetails details(state_);
71 NotificationService::current()->Notify(
72 NotificationType::NETWORK_STATE_CHANGED,
73 NotificationService::AllSources(),
74 Details<NetworkStateDetails>(&details));
75 };
76
77 // static
RetrieveState()78 NetworkStateDetails::State NetworkStateNotifier::RetrieveState() {
79 // Running on desktop means always connected, for now.
80 if (!CrosLibrary::Get()->EnsureLoaded())
81 return NetworkStateDetails::CONNECTED;
82 NetworkLibrary* cros = CrosLibrary::Get()->GetNetworkLibrary();
83 if (cros->Connected()) {
84 return NetworkStateDetails::CONNECTED;
85 } else if (cros->Connecting()) {
86 return NetworkStateDetails::CONNECTING;
87 } else {
88 return NetworkStateDetails::DISCONNECTED;
89 }
90 }
91
92
93 } // namespace chromeos
94