Add m-esr52 at 52.6.0

3 files changed, 714 insertions, 0 deletions

diff --git a/hal/linux/LinuxMemory.cpp b/hal/linux/LinuxMemory.cpp
new file mode 100644
index 000000000..14ed63146
--- /dev/null
+++ b/hal/linux/LinuxMemory.cpp
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=8 et :
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <stdio.h>
+#include "Hal.h"
+
+namespace mozilla {
+namespace hal_impl {
+
+uint32_t
+GetTotalSystemMemory()
+{
+  static uint32_t sTotalMemory;
+  static bool sTotalMemoryObtained = false;
+
+  if (!sTotalMemoryObtained) {
+    sTotalMemoryObtained = true;
+
+    FILE* fd = fopen("/proc/meminfo", "r");
+    if (!fd) {
+      return 0;
+    }
+
+    int rv = fscanf(fd, "MemTotal: %i kB", &sTotalMemory);
+
+    if (fclose(fd) || rv != 1) {
+      return 0;
+    }
+  }
+
+  return sTotalMemory * 1024;
+}
+
+} // namespace hal_impl
+} // namespace mozilla
diff --git a/hal/linux/LinuxPower.cpp b/hal/linux/LinuxPower.cpp
new file mode 100644
index 000000000..70ab4a3f6
--- /dev/null
+++ b/hal/linux/LinuxPower.cpp
@@ -0,0 +1,167 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "Hal.h"
+#include "HalLog.h"
+
+#include <unistd.h>
+#include <sys/reboot.h>
+#include "nsIObserverService.h"
+#include "mozilla/Services.h"
+#include "MainThreadUtils.h"
+
+#if defined(MOZ_WIDGET_GONK)
+#include "cutils/android_reboot.h"
+#include "cutils/properties.h"
+#endif
+
+namespace mozilla {
+namespace hal_impl {
+
+#if (defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 19)
+static void
+PowerCtl(const char* aValue, int aCmd)
+{
+  // this invokes init's powerctl builtin via /init.rc
+  property_set("sys.powerctl", aValue);
+  // device should reboot in few moments, but if it doesn't - call
+  // android_reboot() to make sure that init isn't stuck somewhere
+  sleep(10);
+  HAL_LOG("Powerctl call takes too long, forcing %s.", aValue);
+  android_reboot(aCmd, 0, nullptr);
+}
+#endif
+
+void
+Reboot()
+{
+  if (NS_IsMainThread()) {
+    nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService();
+    if (obsServ) {
+      obsServ->NotifyObservers(nullptr, "system-reboot", nullptr);
+    }
+  }
+
+#if !defined(MOZ_WIDGET_GONK)
+  sync();
+  reboot(RB_AUTOBOOT);
+#elif (ANDROID_VERSION < 19)
+  android_reboot(ANDROID_RB_RESTART, 0, nullptr);
+#else
+  PowerCtl("reboot", ANDROID_RB_RESTART);
+#endif
+}
+
+void
+PowerOff()
+{
+  if (NS_IsMainThread()) {
+    nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService();
+    if (obsServ) {
+      obsServ->NotifyObservers(nullptr, "system-power-off", nullptr);
+    }
+  }
+
+#if !defined(MOZ_WIDGET_GONK)
+  sync();
+  reboot(RB_POWER_OFF);
+#elif (ANDROID_VERSION < 19)
+  android_reboot(ANDROID_RB_POWEROFF, 0, nullptr);
+#else
+  PowerCtl("shutdown", ANDROID_RB_POWEROFF);
+#endif
+}
+
+// Structure to specify how watchdog pthread is going to work.
+typedef struct watchdogParam
+{
+  hal::ShutdownMode mode; // Specify how to shutdown the system.
+  int32_t timeoutSecs;    // Specify the delayed seconds to shutdown the system.
+
+  watchdogParam(hal::ShutdownMode aMode, int32_t aTimeoutSecs)
+    : mode(aMode), timeoutSecs(aTimeoutSecs) {}
+} watchdogParam_t;
+
+// Function to complusively shut down the system with a given mode.
+static void
+QuitHard(hal::ShutdownMode aMode)
+{
+  switch (aMode)
+  {
+    case hal::eHalShutdownMode_PowerOff:
+      PowerOff();
+      break;
+    case hal::eHalShutdownMode_Reboot:
+      Reboot();
+      break;
+    case hal::eHalShutdownMode_Restart:
+      // Don't let signal handlers affect forced shutdown.
+      kill(0, SIGKILL);
+      // If we can't SIGKILL our process group, something is badly
+      // wrong.  Trying to deliver a catch-able signal to ourselves can
+      // invoke signal handlers and might cause problems.  So try
+      // _exit() and hope we go away.
+      _exit(1);
+      break;
+    default:
+      MOZ_CRASH();
+  }
+}
+
+// Function to complusively shut down the system with a given mode when timeout.
+static void*
+ForceQuitWatchdog(void* aParamPtr)
+{
+  watchdogParam_t* paramPtr = reinterpret_cast<watchdogParam_t*>(aParamPtr);
+  if (paramPtr->timeoutSecs > 0 && paramPtr->timeoutSecs <= 30) {
+    // If we shut down normally before the timeout, this thread will
+    // be harmlessly reaped by the OS.
+    TimeStamp deadline =
+      (TimeStamp::Now() + TimeDuration::FromSeconds(paramPtr->timeoutSecs));
+    while (true) {
+      TimeDuration remaining = (deadline - TimeStamp::Now());
+      int sleepSeconds = int(remaining.ToSeconds());
+      if (sleepSeconds <= 0) {
+        break;
+      }
+      sleep(sleepSeconds);
+    }
+  }
+  hal::ShutdownMode mode = paramPtr->mode;
+  delete paramPtr;
+  QuitHard(mode);
+  return nullptr;
+}
+
+void
+StartForceQuitWatchdog(hal::ShutdownMode aMode, int32_t aTimeoutSecs)
+{
+  // Force-quits are intepreted a little more ferociously on Gonk,
+  // because while Gecko is in the process of shutting down, the user
+  // can't call 911, for example.  And if we hang on shutdown, bad
+  // things happen.  So, make sure that doesn't happen.
+  if (aTimeoutSecs <= 0) {
+    return;
+  }
+
+  // Use a raw pthread here to insulate ourselves from bugs in other
+  // Gecko code that we're trying to protect!
+  // 
+  // Note that we let the watchdog in charge of releasing |paramPtr|
+  // if the pthread is successfully created.
+  watchdogParam_t* paramPtr = new watchdogParam_t(aMode, aTimeoutSecs);
+  pthread_t watchdog;
+  if (pthread_create(&watchdog, nullptr,
+                     ForceQuitWatchdog,
+                     reinterpret_cast<void*>(paramPtr))) {
+    // Better safe than sorry.
+    delete paramPtr;
+    QuitHard(aMode);
+  }
+  // The watchdog thread is off and running now.
+}
+
+} // hal_impl
+} // mozilla
diff --git a/hal/linux/UPowerClient.cpp b/hal/linux/UPowerClient.cpp
new file mode 100644
index 000000000..9f6e04379
--- /dev/null
+++ b/hal/linux/UPowerClient.cpp
@@ -0,0 +1,508 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "Hal.h"
+#include "HalLog.h"
+#include <dbus/dbus-glib.h>
+#include <dbus/dbus-glib-lowlevel.h>
+#include <mozilla/Attributes.h>
+#include <mozilla/dom/battery/Constants.h>
+#include "nsAutoRef.h"
+#include <cmath>
+
+/*
+ * Helper that manages the destruction of glib objects as soon as they leave
+ * the current scope.
+ *
+ * We are specializing nsAutoRef class.
+ */
+
+template <>
+class nsAutoRefTraits<GHashTable> : public nsPointerRefTraits<GHashTable>
+{
+public:
+  static void Release(GHashTable* ptr) { g_hash_table_unref(ptr); }
+};
+
+using namespace mozilla::dom::battery;
+
+namespace mozilla {
+namespace hal_impl {
+
+/**
+ * This is the declaration of UPowerClient class. This class is listening and
+ * communicating to upower daemon through DBus.
+ * There is no header file because this class shouldn't be public.
+ */
+class UPowerClient
+{
+public:
+  static UPowerClient* GetInstance();
+
+  void BeginListening();
+  void StopListening();
+
+  double GetLevel();
+  bool   IsCharging();
+  double GetRemainingTime();
+
+  ~UPowerClient();
+
+private:
+  UPowerClient();
+
+  enum States {
+    eState_Unknown = 0,
+    eState_Charging,
+    eState_Discharging,
+    eState_Empty,
+    eState_FullyCharged,
+    eState_PendingCharge,
+    eState_PendingDischarge
+  };
+
+  /**
+   * Update the currently tracked device.
+   * @return whether everything went ok.
+   */
+  void UpdateTrackedDeviceSync();
+
+  /**
+   * Returns a hash table with the properties of aDevice.
+   * Note: the caller has to unref the hash table.
+   */
+  GHashTable* GetDevicePropertiesSync(DBusGProxy* aProxy);
+  void GetDevicePropertiesAsync(DBusGProxy* aProxy);
+  static void GetDevicePropertiesCallback(DBusGProxy* aProxy,
+                                          DBusGProxyCall* aCall,
+                                          void* aData);
+
+  /**
+   * Using the device properties (aHashTable), this method updates the member
+   * variable storing the values we care about.
+   */
+  void UpdateSavedInfo(GHashTable* aHashTable);
+
+  /**
+   * Callback used by 'DeviceChanged' signal.
+   */
+  static void DeviceChanged(DBusGProxy* aProxy, const gchar* aObjectPath,
+                            UPowerClient* aListener);
+
+  /**
+   * Callback used by 'PropertiesChanged' signal.
+   * This method is called when the the battery level changes.
+   * (Only with upower >= 0.99)
+   */
+  static void PropertiesChanged(DBusGProxy* aProxy, const gchar*,
+                                GHashTable*, char**,
+                                UPowerClient* aListener);
+
+  /**
+   * Callback called when mDBusConnection gets a signal.
+   */
+  static DBusHandlerResult ConnectionSignalFilter(DBusConnection* aConnection,
+                                                  DBusMessage* aMessage,
+                                                  void* aData);
+
+  // The DBus connection object.
+  DBusGConnection* mDBusConnection;
+
+  // The DBus proxy object to upower.
+  DBusGProxy* mUPowerProxy;
+
+  // The path of the tracked device.
+  gchar* mTrackedDevice;
+
+  // The DBusGProxy for the tracked device.
+  DBusGProxy* mTrackedDeviceProxy;
+
+  double mLevel;
+  bool mCharging;
+  double mRemainingTime;
+
+  static UPowerClient* sInstance;
+
+  static const guint sDeviceTypeBattery = 2;
+  static const guint64 kUPowerUnknownRemainingTime = 0;
+};
+
+/*
+ * Implementation of mozilla::hal_impl::EnableBatteryNotifications,
+ *                   mozilla::hal_impl::DisableBatteryNotifications,
+ *               and mozilla::hal_impl::GetCurrentBatteryInformation.
+ */
+
+void
+EnableBatteryNotifications()
+{
+  UPowerClient::GetInstance()->BeginListening();
+}
+
+void
+DisableBatteryNotifications()
+{
+  UPowerClient::GetInstance()->StopListening();
+}
+
+void
+GetCurrentBatteryInformation(hal::BatteryInformation* aBatteryInfo)
+{
+  UPowerClient* upowerClient = UPowerClient::GetInstance();
+
+  aBatteryInfo->level() = upowerClient->GetLevel();
+  aBatteryInfo->charging() = upowerClient->IsCharging();
+  aBatteryInfo->remainingTime() = upowerClient->GetRemainingTime();
+}
+
+/*
+ * Following is the implementation of UPowerClient.
+ */
+
+UPowerClient* UPowerClient::sInstance = nullptr;
+
+/* static */ UPowerClient*
+UPowerClient::GetInstance()
+{
+  if (!sInstance) {
+    sInstance = new UPowerClient();
+  }
+
+  return sInstance;
+}
+
+UPowerClient::UPowerClient()
+  : mDBusConnection(nullptr)
+  , mUPowerProxy(nullptr)
+  , mTrackedDevice(nullptr)
+  , mTrackedDeviceProxy(nullptr)
+  , mLevel(kDefaultLevel)
+  , mCharging(kDefaultCharging)
+  , mRemainingTime(kDefaultRemainingTime)
+{
+}
+
+UPowerClient::~UPowerClient()
+{
+  NS_ASSERTION(!mDBusConnection && !mUPowerProxy && !mTrackedDevice && !mTrackedDeviceProxy,
+               "The observers have not been correctly removed! "
+               "(StopListening should have been called)");
+}
+
+void
+UPowerClient::BeginListening()
+{
+  GError* error = nullptr;
+  mDBusConnection = dbus_g_bus_get(DBUS_BUS_SYSTEM, &error);
+
+  if (!mDBusConnection) {
+    HAL_LOG("Failed to open connection to bus: %s\n", error->message);
+    g_error_free(error);
+    return;
+  }
+
+  DBusConnection* dbusConnection =
+    dbus_g_connection_get_connection(mDBusConnection);
+
+  // Make sure we do not exit the entire program if DBus connection get lost.
+  dbus_connection_set_exit_on_disconnect(dbusConnection, false);
+
+  // Listening to signals the DBus connection is going to get so we will know
+  // when it is lost and we will be able to disconnect cleanly.
+  dbus_connection_add_filter(dbusConnection, ConnectionSignalFilter, this,
+                             nullptr);
+
+  mUPowerProxy = dbus_g_proxy_new_for_name(mDBusConnection,
+                                           "org.freedesktop.UPower",
+                                           "/org/freedesktop/UPower",
+                                           "org.freedesktop.UPower");
+
+  UpdateTrackedDeviceSync();
+
+  /*
+   * TODO: we should probably listen to DeviceAdded and DeviceRemoved signals.
+   * If we do that, we would have to disconnect from those in StopListening.
+   * It's not yet implemented because it requires testing hot plugging and
+   * removal of a battery.
+   */
+  dbus_g_proxy_add_signal(mUPowerProxy, "DeviceChanged", G_TYPE_STRING,
+                          G_TYPE_INVALID);
+  dbus_g_proxy_connect_signal(mUPowerProxy, "DeviceChanged",
+                              G_CALLBACK (DeviceChanged), this, nullptr);
+}
+
+void
+UPowerClient::StopListening()
+{
+  // If mDBusConnection isn't initialized, that means we are not really listening.
+  if (!mDBusConnection) {
+    return;
+  }
+
+  dbus_connection_remove_filter(
+      dbus_g_connection_get_connection(mDBusConnection),
+      ConnectionSignalFilter, this);
+
+  dbus_g_proxy_disconnect_signal(mUPowerProxy, "DeviceChanged",
+                                 G_CALLBACK (DeviceChanged), this);
+
+  g_free(mTrackedDevice);
+  mTrackedDevice = nullptr;
+
+  if (mTrackedDeviceProxy) {
+    dbus_g_proxy_disconnect_signal(mTrackedDeviceProxy, "PropertiesChanged",
+                                   G_CALLBACK (PropertiesChanged), this);
+
+    g_object_unref(mTrackedDeviceProxy);
+    mTrackedDeviceProxy = nullptr;
+  }
+
+  g_object_unref(mUPowerProxy);
+  mUPowerProxy = nullptr;
+
+  dbus_g_connection_unref(mDBusConnection);
+  mDBusConnection = nullptr;
+
+  // We should now show the default values, not the latest we got.
+  mLevel = kDefaultLevel;
+  mCharging = kDefaultCharging;
+  mRemainingTime = kDefaultRemainingTime;
+}
+
+void
+UPowerClient::UpdateTrackedDeviceSync()
+{
+  GType typeGPtrArray = dbus_g_type_get_collection("GPtrArray",
+                                                   DBUS_TYPE_G_OBJECT_PATH);
+  GPtrArray* devices = nullptr;
+  GError* error = nullptr;
+
+  // Reset the current tracked device:
+  g_free(mTrackedDevice);
+  mTrackedDevice = nullptr;
+
+  // Reset the current tracked device proxy:
+  if (mTrackedDeviceProxy) {
+    dbus_g_proxy_disconnect_signal(mTrackedDeviceProxy, "PropertiesChanged",
+                                   G_CALLBACK (PropertiesChanged), this);
+
+    g_object_unref(mTrackedDeviceProxy);
+    mTrackedDeviceProxy = nullptr;
+  }
+
+  // If that fails, that likely means upower isn't installed.
+  if (!dbus_g_proxy_call(mUPowerProxy, "EnumerateDevices", &error, G_TYPE_INVALID,
+                         typeGPtrArray, &devices, G_TYPE_INVALID)) {
+    HAL_LOG("Error: %s\n", error->message);
+    g_error_free(error);
+    return;
+  }
+
+  /*
+   * We are looking for the first device that is a battery.
+   * TODO: we could try to combine more than one battery.
+   */
+  for (guint i=0; i<devices->len; ++i) {
+    gchar* devicePath = static_cast<gchar*>(g_ptr_array_index(devices, i));
+
+    DBusGProxy* proxy = dbus_g_proxy_new_from_proxy(mUPowerProxy,
+                                                    "org.freedesktop.DBus.Properties",
+                                                    devicePath);
+
+    nsAutoRef<GHashTable> hashTable(GetDevicePropertiesSync(proxy));
+
+    if (g_value_get_uint(static_cast<const GValue*>(g_hash_table_lookup(hashTable, "Type"))) == sDeviceTypeBattery) {
+      UpdateSavedInfo(hashTable);
+      mTrackedDevice = devicePath;
+      mTrackedDeviceProxy = proxy;
+      break;
+    }
+
+    g_object_unref(proxy);
+    g_free(devicePath);
+  }
+
+  if (mTrackedDeviceProxy) {
+    dbus_g_proxy_add_signal(mTrackedDeviceProxy, "PropertiesChanged",
+                            G_TYPE_STRING,
+                            dbus_g_type_get_map("GHashTable", G_TYPE_STRING,
+                                                G_TYPE_VALUE),
+                            G_TYPE_STRV, G_TYPE_INVALID);
+    dbus_g_proxy_connect_signal(mTrackedDeviceProxy, "PropertiesChanged",
+                                G_CALLBACK (PropertiesChanged), this, nullptr);
+  }
+
+  g_ptr_array_free(devices, true);
+}
+
+/* static */ void
+UPowerClient::DeviceChanged(DBusGProxy* aProxy, const gchar* aObjectPath,
+                            UPowerClient* aListener)
+{
+  if (!aListener->mTrackedDevice) {
+    return;
+  }
+
+#if GLIB_MAJOR_VERSION >= 2 && GLIB_MINOR_VERSION >= 16
+  if (g_strcmp0(aObjectPath, aListener->mTrackedDevice)) {
+#else
+  if (g_ascii_strcasecmp(aObjectPath, aListener->mTrackedDevice)) {
+#endif
+    return;
+  }
+
+  aListener->GetDevicePropertiesAsync(aListener->mTrackedDeviceProxy);
+}
+
+/* static */ void
+UPowerClient::PropertiesChanged(DBusGProxy* aProxy, const gchar*, GHashTable*,
+                                char**, UPowerClient* aListener)
+{
+  aListener->GetDevicePropertiesAsync(aListener->mTrackedDeviceProxy);
+}
+
+/* static */ DBusHandlerResult
+UPowerClient::ConnectionSignalFilter(DBusConnection* aConnection,
+                                     DBusMessage* aMessage, void* aData)
+{
+  if (dbus_message_is_signal(aMessage, DBUS_INTERFACE_LOCAL, "Disconnected")) {
+    static_cast<UPowerClient*>(aData)->StopListening();
+    // We do not return DBUS_HANDLER_RESULT_HANDLED here because the connection
+    // might be shared and some other filters might want to do something.
+  }
+
+  return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+}
+
+GHashTable*
+UPowerClient::GetDevicePropertiesSync(DBusGProxy* aProxy)
+{
+  GError* error = nullptr;
+  GHashTable* hashTable = nullptr;
+  GType typeGHashTable = dbus_g_type_get_map("GHashTable", G_TYPE_STRING,
+                                            G_TYPE_VALUE);
+  if (!dbus_g_proxy_call(aProxy, "GetAll", &error, G_TYPE_STRING,
+                         "org.freedesktop.UPower.Device", G_TYPE_INVALID,
+                         typeGHashTable, &hashTable, G_TYPE_INVALID)) {
+    HAL_LOG("Error: %s\n", error->message);
+    g_error_free(error);
+    return nullptr;
+  }
+
+  return hashTable;
+}
+
+/* static */ void
+UPowerClient::GetDevicePropertiesCallback(DBusGProxy* aProxy,
+                                          DBusGProxyCall* aCall, void* aData)
+{
+  GError* error = nullptr;
+  GHashTable* hashTable = nullptr;
+  GType typeGHashTable = dbus_g_type_get_map("GHashTable", G_TYPE_STRING,
+                                             G_TYPE_VALUE);
+  if (!dbus_g_proxy_end_call(aProxy, aCall, &error, typeGHashTable,
+                             &hashTable, G_TYPE_INVALID)) {
+    HAL_LOG("Error: %s\n", error->message);
+    g_error_free(error);
+  } else {
+    sInstance->UpdateSavedInfo(hashTable);
+    hal::NotifyBatteryChange(hal::BatteryInformation(sInstance->mLevel,
+                                                     sInstance->mCharging,
+                                                     sInstance->mRemainingTime));
+    g_hash_table_unref(hashTable);
+  }
+}
+
+void
+UPowerClient::GetDevicePropertiesAsync(DBusGProxy* aProxy)
+{
+  dbus_g_proxy_begin_call(aProxy, "GetAll", GetDevicePropertiesCallback, nullptr,
+                          nullptr, G_TYPE_STRING,
+                          "org.freedesktop.UPower.Device", G_TYPE_INVALID);
+}
+
+void
+UPowerClient::UpdateSavedInfo(GHashTable* aHashTable)
+{
+  bool isFull = false;
+
+  /*
+   * State values are confusing...
+   * First of all, after looking at upower sources (0.9.13), it seems that
+   * PendingDischarge and PendingCharge are not used.
+   * In addition, FullyCharged and Empty states are not clear because we do not
+   * know if the battery is actually charging or not. Those values come directly
+   * from sysfs (in the Linux kernel) which have four states: "Empty", "Full",
+   * "Charging" and "Discharging". In sysfs, "Empty" and "Full" are also only
+   * related to the level, not to the charging state.
+   * In this code, we are going to assume that Full means charging and Empty
+   * means discharging because if that is not the case, the state should not
+   * last a long time (actually, it should disappear at the following update).
+   * It might be even very hard to see real cases where the state is Empty and
+   * the battery is charging or the state is Full and the battery is discharging
+   * given that plugging/unplugging the battery should have an impact on the
+   * level.
+   */
+  switch (g_value_get_uint(static_cast<const GValue*>(g_hash_table_lookup(aHashTable, "State")))) {
+    case eState_Unknown:
+      mCharging = kDefaultCharging;
+      break;
+    case eState_FullyCharged:
+      isFull = true;
+      MOZ_FALLTHROUGH;
+    case eState_Charging:
+    case eState_PendingCharge:
+      mCharging = true;
+      break;
+    case eState_Discharging:
+    case eState_Empty:
+    case eState_PendingDischarge:
+      mCharging = false;
+      break;
+  }
+
+  /*
+   * The battery level might be very close to 100% (like 99%) without
+   * increasing. It seems that upower sets the battery state as 'full' in that
+   * case so we should trust it and not even try to get the value.
+   */
+  if (isFull) {
+    mLevel = 1.0;
+  } else {
+    mLevel = round(g_value_get_double(static_cast<const GValue*>(g_hash_table_lookup(aHashTable, "Percentage"))))*0.01;
+  }
+
+  if (isFull) {
+    mRemainingTime = 0;
+  } else {
+    mRemainingTime = mCharging ? g_value_get_int64(static_cast<const GValue*>(g_hash_table_lookup(aHashTable, "TimeToFull")))
+                               : g_value_get_int64(static_cast<const GValue*>(g_hash_table_lookup(aHashTable, "TimeToEmpty")));
+
+    if (mRemainingTime == kUPowerUnknownRemainingTime) {
+      mRemainingTime = kUnknownRemainingTime;
+    }
+  }
+}
+
+double
+UPowerClient::GetLevel()
+{
+  return mLevel;
+}
+
+bool
+UPowerClient::IsCharging()
+{
+  return mCharging;
+}
+
+double
+UPowerClient::GetRemainingTime()
+{
+  return mRemainingTime;
+}
+
+} // namespace hal_impl
+} // namespace mozilla