content/browser/power_monitor_message_broadcaster.cc

   1 // Copyright 2013 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 "content/browser/power_monitor_message_broadcaster.h"
   6
   7 #include "base/power_monitor/power_monitor.h"
   8 #include "content/common/power_monitor_messages.h"
   9 #include "ipc/ipc_sender.h"
  10
  11 namespace content {
  12
  13 PowerMonitorMessageBroadcaster::PowerMonitorMessageBroadcaster(
  14     IPC::Sender* sender)
  15     : sender_(sender) {
  16   base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
  17   if (power_monitor)
  18     power_monitor->AddObserver(this);
  19 }
  20
  21 PowerMonitorMessageBroadcaster::~PowerMonitorMessageBroadcaster() {
  22   base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
  23   if (power_monitor)
  24     power_monitor->RemoveObserver(this);
  25 }
  26
  27 void PowerMonitorMessageBroadcaster::Init() {
  28   base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
  29   // Unit tests does not initialize the PowerMonitor.
  30   if (power_monitor)
  31     OnPowerStateChange(power_monitor->IsOnBatteryPower());
  32 }
  33
  34 void PowerMonitorMessageBroadcaster::OnPowerStateChange(bool on_battery_power) {
  35   sender_->Send(new PowerMonitorMsg_PowerStateChange(on_battery_power));
  36 }
  37
  38 void PowerMonitorMessageBroadcaster::OnSuspend() {
  39   sender_->Send(new PowerMonitorMsg_Suspend());
  40 }
  41
  42 void PowerMonitorMessageBroadcaster::OnResume() {
  43   sender_->Send(new PowerMonitorMsg_Resume());
  44 }
  45
  46 }  // namespace content