content/browser/battery_status/battery_status_manager_android.cc

   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 "content/browser/battery_status/battery_status_manager.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "base/metrics/histogram.h"
   9 #include "jni/BatteryStatusManager_jni.h"
  10
  11 using base::android::AttachCurrentThread;
  12
  13 namespace content {
  14
  15 BatteryStatusManager::BatteryStatusManager(
  16     const BatteryStatusService::BatteryUpdateCallback& callback)
  17     : callback_(callback) {
  18   j_manager_.Reset(
  19       Java_BatteryStatusManager_getInstance(
  20           AttachCurrentThread(), base::android::GetApplicationContext()));
  21 }
  22
  23 BatteryStatusManager::BatteryStatusManager() {
  24 }
  25
  26 BatteryStatusManager::~BatteryStatusManager() {
  27 }
  28
  29 bool BatteryStatusManager::Register(JNIEnv* env) {
  30   return RegisterNativesImpl(env);
  31 }
  32
  33 void BatteryStatusManager::GotBatteryStatus(JNIEnv*, jobject,
  34     jboolean charging, jdouble charging_time, jdouble discharging_time,
  35     jdouble level) {
  36   blink::WebBatteryStatus status;
  37   status.charging = charging;
  38   status.chargingTime = charging_time;
  39   status.dischargingTime = discharging_time;
  40   status.level = level;
  41   callback_.Run(status);
  42 }
  43
  44 bool BatteryStatusManager::StartListeningBatteryChange() {
  45   bool result = Java_BatteryStatusManager_start(AttachCurrentThread(),
  46       j_manager_.obj(), reinterpret_cast<intptr_t>(this));
  47   UMA_HISTOGRAM_BOOLEAN("BatteryStatus.StartAndroid", result);
  48   return result;
  49 }
  50
  51 void BatteryStatusManager::StopListeningBatteryChange() {
  52   Java_BatteryStatusManager_stop(
  53       AttachCurrentThread(), j_manager_.obj());
  54 }
  55
  56 }  // namespace content