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1 // Copyright (c) 2009 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 "app/system_monitor.h" | |
6 | |
7 void SystemMonitor::ProcessWmPowerBroadcastMessage(int event_id) { | |
8 PowerEvent power_event; | |
9 switch (event_id) { | |
10 case PBT_APMPOWERSTATUSCHANGE: // The power status changed. | |
11 power_event = POWER_STATE_EVENT; | |
12 break; | |
13 case PBT_APMRESUMEAUTOMATIC: // Resume from suspend. | |
14 //case PBT_APMRESUMESUSPEND: // User-initiated resume from suspend. | |
15 // We don't notify for this latter event | |
16 // because if it occurs it is always sent as a | |
17 // second event after PBT_APMRESUMEAUTOMATIC. | |
18 power_event = RESUME_EVENT; | |
19 break; | |
20 case PBT_APMSUSPEND: // System has been suspended. | |
21 power_event = SUSPEND_EVENT; | |
22 break; | |
23 default: | |
24 return; | |
25 | |
26 // Other Power Events: | |
27 // PBT_APMBATTERYLOW - removed in Vista. | |
28 // PBT_APMOEMEVENT - removed in Vista. | |
29 // PBT_APMQUERYSUSPEND - removed in Vista. | |
30 // PBT_APMQUERYSUSPENDFAILED - removed in Vista. | |
31 // PBT_APMRESUMECRITICAL - removed in Vista. | |
32 // PBT_POWERSETTINGCHANGE - user changed the power settings. | |
33 } | |
34 ProcessPowerMessage(power_event); | |
35 } | |
36 | |
37 // Function to query the system to see if it is currently running on | |
38 // battery power. Returns true if running on battery. | |
39 bool SystemMonitor::IsBatteryPower() { | |
40 SYSTEM_POWER_STATUS status; | |
41 if (!GetSystemPowerStatus(&status)) { | |
42 LOG(ERROR) << "GetSystemPowerStatus failed: " << GetLastError(); | |
43 return false; | |
44 } | |
45 return (status.ACLineStatus == 0); | |
46 } | |
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