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1 // Copyright 2014 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 "ash/common/system/chromeos/session/tray_session_length_limit.h" | |
6 | |
7 #include <algorithm> | |
8 #include <memory> | |
9 #include <utility> | |
10 | |
11 #include "ash/common/system/system_notifier.h" | |
12 #include "ash/common/system/tray/label_tray_view.h" | |
13 #include "ash/common/system/tray/system_tray.h" | |
14 #include "ash/common/system/tray/system_tray_delegate.h" | |
15 #include "ash/common/system/tray/system_tray_notifier.h" | |
16 #include "ash/common/wm_shell.h" | |
17 #include "ash/resources/grit/ash_resources.h" | |
18 #include "ash/strings/grit/ash_strings.h" | |
19 #include "base/logging.h" | |
20 #include "base/strings/utf_string_conversions.h" | |
21 #include "ui/base/l10n/l10n_util.h" | |
22 #include "ui/base/l10n/time_format.h" | |
23 #include "ui/base/resource/resource_bundle.h" | |
24 #include "ui/message_center/message_center.h" | |
25 #include "ui/message_center/notification.h" | |
26 #include "ui/views/view.h" | |
27 | |
28 namespace ash { | |
29 namespace { | |
30 | |
31 // If the remaining session time falls below this threshold, the user should be | |
32 // informed that the session is about to expire. | |
33 const int kExpiringSoonThresholdInMinutes = 5; | |
34 | |
35 // Use 500ms interval for updates to notification and tray bubble to reduce the | |
36 // likelihood of a user-visible skip in high load situations (as might happen | |
37 // with 1000ms). | |
38 const int kTimerIntervalInMilliseconds = 500; | |
39 | |
40 } // namespace | |
41 | |
42 // static | |
43 const char TraySessionLengthLimit::kNotificationId[] = | |
44 "chrome://session/timeout"; | |
45 | |
46 TraySessionLengthLimit::TraySessionLengthLimit(SystemTray* system_tray) | |
47 : SystemTrayItem(system_tray, UMA_SESSION_LENGTH_LIMIT), | |
48 limit_state_(LIMIT_NONE), | |
49 last_limit_state_(LIMIT_NONE), | |
50 tray_bubble_view_(NULL) { | |
51 WmShell::Get()->system_tray_notifier()->AddSessionLengthLimitObserver(this); | |
52 Update(); | |
53 } | |
54 | |
55 TraySessionLengthLimit::~TraySessionLengthLimit() { | |
56 WmShell::Get()->system_tray_notifier()->RemoveSessionLengthLimitObserver( | |
57 this); | |
58 } | |
59 | |
60 // Add view to tray bubble. | |
61 views::View* TraySessionLengthLimit::CreateDefaultView(LoginStatus status) { | |
62 CHECK(!tray_bubble_view_); | |
63 UpdateState(); | |
64 if (limit_state_ == LIMIT_NONE) | |
65 return NULL; | |
66 tray_bubble_view_ = | |
67 new LabelTrayView(NULL /* click_listener */, | |
68 IDR_AURA_UBER_TRAY_BUBBLE_SESSION_LENGTH_LIMIT); | |
69 tray_bubble_view_->SetMessage(ComposeTrayBubbleMessage()); | |
70 return tray_bubble_view_; | |
71 } | |
72 | |
73 // View has been removed from tray bubble. | |
74 void TraySessionLengthLimit::DestroyDefaultView() { | |
75 tray_bubble_view_ = NULL; | |
76 } | |
77 | |
78 void TraySessionLengthLimit::OnSessionStartTimeChanged() { | |
79 Update(); | |
80 } | |
81 | |
82 void TraySessionLengthLimit::OnSessionLengthLimitChanged() { | |
83 Update(); | |
84 } | |
85 | |
86 void TraySessionLengthLimit::Update() { | |
87 UpdateState(); | |
88 UpdateNotification(); | |
89 UpdateTrayBubbleView(); | |
90 } | |
91 | |
92 void TraySessionLengthLimit::UpdateState() { | |
93 SystemTrayDelegate* delegate = WmShell::Get()->system_tray_delegate(); | |
94 if (delegate->GetSessionStartTime(&session_start_time_) && | |
95 delegate->GetSessionLengthLimit(&time_limit_)) { | |
96 const base::TimeDelta expiring_soon_threshold( | |
97 base::TimeDelta::FromMinutes(kExpiringSoonThresholdInMinutes)); | |
98 remaining_session_time_ = | |
99 std::max(time_limit_ - (base::TimeTicks::Now() - session_start_time_), | |
100 base::TimeDelta()); | |
101 limit_state_ = remaining_session_time_ <= expiring_soon_threshold | |
102 ? LIMIT_EXPIRING_SOON | |
103 : LIMIT_SET; | |
104 if (!timer_) | |
105 timer_.reset(new base::RepeatingTimer); | |
106 if (!timer_->IsRunning()) { | |
107 timer_->Start(FROM_HERE, base::TimeDelta::FromMilliseconds( | |
108 kTimerIntervalInMilliseconds), | |
109 this, &TraySessionLengthLimit::Update); | |
110 } | |
111 } else { | |
112 remaining_session_time_ = base::TimeDelta(); | |
113 limit_state_ = LIMIT_NONE; | |
114 timer_.reset(); | |
115 } | |
116 } | |
117 | |
118 void TraySessionLengthLimit::UpdateNotification() { | |
119 message_center::MessageCenter* message_center = | |
120 message_center::MessageCenter::Get(); | |
121 | |
122 // If state hasn't changed and the notification has already been acknowledged, | |
123 // we won't re-create it. | |
124 if (limit_state_ == last_limit_state_ && | |
125 !message_center->FindVisibleNotificationById(kNotificationId)) { | |
126 return; | |
127 } | |
128 | |
129 // After state change, any possibly existing notification is removed to make | |
130 // sure it is re-shown even if it had been acknowledged by the user before | |
131 // (and in the rare case of state change towards LIMIT_NONE to make the | |
132 // notification disappear). | |
133 if (limit_state_ != last_limit_state_ && | |
134 message_center->FindVisibleNotificationById(kNotificationId)) { | |
135 message_center::MessageCenter::Get()->RemoveNotification( | |
136 kNotificationId, false /* by_user */); | |
137 } | |
138 | |
139 // For LIMIT_NONE, there's nothing more to do. | |
140 if (limit_state_ == LIMIT_NONE) { | |
141 last_limit_state_ = limit_state_; | |
142 return; | |
143 } | |
144 | |
145 ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance(); | |
146 message_center::RichNotificationData data; | |
147 data.should_make_spoken_feedback_for_popup_updates = | |
148 (limit_state_ != last_limit_state_); | |
149 std::unique_ptr<message_center::Notification> notification( | |
150 new message_center::Notification( | |
151 message_center::NOTIFICATION_TYPE_SIMPLE, kNotificationId, | |
152 base::string16() /* title */, | |
153 ComposeNotificationMessage() /* message */, | |
154 bundle.GetImageNamed( | |
155 IDR_AURA_UBER_TRAY_NOTIFICATION_SESSION_LENGTH_LIMIT), | |
156 base::string16() /* display_source */, GURL(), | |
157 message_center::NotifierId( | |
158 message_center::NotifierId::SYSTEM_COMPONENT, | |
159 system_notifier::kNotifierSessionLengthTimeout), | |
160 data, NULL /* delegate */)); | |
161 notification->SetSystemPriority(); | |
162 if (message_center->FindVisibleNotificationById(kNotificationId)) | |
163 message_center->UpdateNotification(kNotificationId, | |
164 std::move(notification)); | |
165 else | |
166 message_center->AddNotification(std::move(notification)); | |
167 last_limit_state_ = limit_state_; | |
168 } | |
169 | |
170 void TraySessionLengthLimit::UpdateTrayBubbleView() const { | |
171 if (!tray_bubble_view_) | |
172 return; | |
173 if (limit_state_ == LIMIT_NONE) | |
174 tray_bubble_view_->SetMessage(base::string16()); | |
175 else | |
176 tray_bubble_view_->SetMessage(ComposeTrayBubbleMessage()); | |
177 tray_bubble_view_->Layout(); | |
178 } | |
179 | |
180 base::string16 TraySessionLengthLimit::ComposeNotificationMessage() const { | |
181 return l10n_util::GetStringFUTF16( | |
182 IDS_ASH_STATUS_TRAY_NOTIFICATION_SESSION_LENGTH_LIMIT, | |
183 ui::TimeFormat::Detailed(ui::TimeFormat::FORMAT_DURATION, | |
184 ui::TimeFormat::LENGTH_LONG, 10, | |
185 remaining_session_time_)); | |
186 } | |
187 | |
188 base::string16 TraySessionLengthLimit::ComposeTrayBubbleMessage() const { | |
189 return l10n_util::GetStringFUTF16( | |
190 IDS_ASH_STATUS_TRAY_BUBBLE_SESSION_LENGTH_LIMIT, | |
191 ui::TimeFormat::Detailed(ui::TimeFormat::FORMAT_DURATION, | |
192 ui::TimeFormat::LENGTH_LONG, 10, | |
193 remaining_session_time_)); | |
194 } | |
195 | |
196 } // namespace ash | |
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