| [email protected] | a20e82f | 2008-09-25 18:46:11 | [diff] [blame] | 1 | // Copyright (c) 2008 The Chromium Authors. All rights reserved.
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| 2 | // Use of this source code is governed by a BSD-style license that can be
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| 3 | // found in the LICENSE file.
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| 4 |
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| 5 | #include "base/system_monitor.h"
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| 6 |
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| 7 | namespace base {
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| 8 |
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| 9 | SystemMonitor::SystemMonitor()
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| 10 | : battery_in_use_(IsBatteryPower()),
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| 11 | suspended_(false) {
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| 12 | }
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| 13 |
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| 14 | void SystemMonitor::ProcessPowerMessage(PowerEvent event_id) {
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| 15 | // Suppress duplicate notifications. Some platforms may
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| 16 | // send multiple notifications of the same event.
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| 17 | switch (event_id) {
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| 18 | case PowerStateEvent:
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| 19 | {
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| 20 | bool on_battery = IsBatteryPower();
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| 21 | if (on_battery != battery_in_use_) {
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| 22 | battery_in_use_ = on_battery;
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| 23 | NotifyPowerStateChange();
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| 24 | }
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| 25 | }
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| 26 | break;
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| 27 | case ResumeEvent:
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| 28 | if (suspended_) {
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| 29 | suspended_ = false;
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| 30 | NotifyResume();
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| 31 | }
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| 32 | break;
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| 33 | case SuspendEvent:
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| 34 | if (!suspended_) {
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| 35 | suspended_ = true;
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| 36 | NotifySuspend();
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| 37 | }
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| 38 | break;
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| 39 | }
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| 40 | }
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| 41 |
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| [email protected] | e38d2192 | 2008-09-25 19:33:39 | [diff] [blame] | 42 | } // namespace base
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