src/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_android.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "base/android/scoped_java_ref.h"
   9 #include "base/metrics/histogram.h"
  10 #include "jni/BatteryStatusManager_jni.h"
  11
  12 using base::android::AttachCurrentThread;
  13
  14 namespace content {
  15
  16 BatteryStatusManagerAndroid::BatteryStatusManagerAndroid(
  17     const BatteryStatusService::BatteryUpdateCallback& callback)
  18     : callback_(callback) {
  19   j_manager_.Reset(
  20       Java_BatteryStatusManager_getInstance(
  21           AttachCurrentThread(), base::android::GetApplicationContext()));
  22 }
  23
  24 BatteryStatusManagerAndroid::~BatteryStatusManagerAndroid() {
  25 }
  26
  27 // static
  28 bool BatteryStatusManagerAndroid::Register(JNIEnv* env) {
  29   return RegisterNativesImpl(env);
  30 }
  31
  32 void BatteryStatusManagerAndroid::GotBatteryStatus(JNIEnv*,
  33                                                    jobject,
  34                                                    jboolean charging,
  35                                                    jdouble charging_time,
  36                                                    jdouble discharging_time,
  37                                                    jdouble level) {
  38   blink::WebBatteryStatus status;
  39   status.charging = charging;
  40   status.chargingTime = charging_time;
  41   status.dischargingTime = discharging_time;
  42   status.level = level;
  43   callback_.Run(status);
  44 }
  45
  46 bool BatteryStatusManagerAndroid::StartListeningBatteryChange() {
  47   bool result = Java_BatteryStatusManager_start(AttachCurrentThread(),
  48       j_manager_.obj(), reinterpret_cast<intptr_t>(this));
  49   UMA_HISTOGRAM_BOOLEAN("BatteryStatus.StartAndroid", result);
  50   return result;
  51 }
  52
  53 void BatteryStatusManagerAndroid::StopListeningBatteryChange() {
  54   Java_BatteryStatusManager_stop(
  55       AttachCurrentThread(), j_manager_.obj());
  56 }
  57
  58 // static
  59 scoped_ptr<BatteryStatusManager> BatteryStatusManager::Create(
  60     const BatteryStatusService::BatteryUpdateCallback& callback) {
  61   return scoped_ptr<BatteryStatusManager>(
  62       new BatteryStatusManagerAndroid(callback));
  63 }
  64
  65 }  // namespace content