src/chrome/browser/ui/webui/chromeos/power_ui.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 "chrome/browser/ui/webui/chromeos/power_ui.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/time/time.h"
  12 #include "base/values.h"
  13 #include "chrome/browser/chromeos/power/power_data_collector.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/common/url_constants.h"
  16 #include "content/public/browser/web_ui.h"
  17 #include "content/public/browser/web_ui_data_source.h"
  18 #include "content/public/browser/web_ui_message_handler.h"
  19 #include "grit/browser_resources.h"
  20 #include "grit/generated_resources.h"
  21
  22 namespace chromeos {
  23
  24 namespace {
  25
  26 const char kStringsJsFile[] = "strings.js";
  27 const char kRequestBatteryChargeDataCallback[] = "requestBatteryChargeData";
  28 const char kOnRequestBatteryChargeDataFunction[] =
  29     "powerUI.showBatteryChargeData";
  30
  31 class PowerMessageHandler : public content::WebUIMessageHandler {
  32  public:
  33   PowerMessageHandler();
  34   virtual ~PowerMessageHandler();
  35
  36   // WebUIMessageHandler implementation.
  37   virtual void RegisterMessages() OVERRIDE;
  38
  39  private:
  40   void OnGetBatteryChargeData(const base::ListValue* value);
  41 };
  42
  43 PowerMessageHandler::PowerMessageHandler() {
  44 }
  45
  46 PowerMessageHandler::~PowerMessageHandler() {
  47 }
  48
  49 void PowerMessageHandler::RegisterMessages() {
  50   web_ui()->RegisterMessageCallback(
  51       kRequestBatteryChargeDataCallback,
  52       base::Bind(&PowerMessageHandler::OnGetBatteryChargeData,
  53                  base::Unretained(this)));
  54 }
  55
  56 void PowerMessageHandler::OnGetBatteryChargeData(const base::ListValue* value) {
  57   const std::deque<PowerDataCollector::PowerSupplySample>& power_supply =
  58       PowerDataCollector::Get()->power_supply_data();
  59   base::ListValue js_power_supply_data;
  60   for (size_t i = 0; i < power_supply.size(); ++i) {
  61     const PowerDataCollector::PowerSupplySample& sample = power_supply[i];
  62     scoped_ptr<base::DictionaryValue> element(new base::DictionaryValue);
  63     element->SetDouble("batteryPercent", sample.battery_percent);
  64     element->SetDouble("batteryDischargeRate", sample.battery_discharge_rate);
  65     element->SetBoolean("externalPower", sample.external_power);
  66     element->SetDouble("time", sample.time.ToJsTime());
  67
  68     js_power_supply_data.Append(element.release());
  69   }
  70
  71   const std::deque<PowerDataCollector::SystemResumedSample>& system_resumed =
  72       PowerDataCollector::Get()->system_resumed_data();
  73   base::ListValue js_system_resumed_data;
  74   for (size_t i = 0; i < system_resumed.size(); ++i) {
  75     const PowerDataCollector::SystemResumedSample& sample = system_resumed[i];
  76     scoped_ptr<base::DictionaryValue> element(new base::DictionaryValue);
  77     element->SetDouble("sleepDuration",
  78                        sample.sleep_duration.InMillisecondsF());
  79     element->SetDouble("time", sample.time.ToJsTime());
  80
  81     js_system_resumed_data.Append(element.release());
  82   }
  83
  84   web_ui()->CallJavascriptFunction(kOnRequestBatteryChargeDataFunction,
  85                                    js_power_supply_data,
  86                                    js_system_resumed_data);
  87 }
  88
  89 }  // namespace
  90
  91 PowerUI::PowerUI(content::WebUI* web_ui) : content::WebUIController(web_ui) {
  92   web_ui->AddMessageHandler(new PowerMessageHandler());
  93
  94   content::WebUIDataSource* html =
  95       content::WebUIDataSource::Create(chrome::kChromeUIPowerHost);
  96   html->SetUseJsonJSFormatV2();
  97
  98   html->AddLocalizedString("titleText", IDS_ABOUT_POWER_TITLE);
  99   html->AddLocalizedString("reloadButton", IDS_ABOUT_POWER_RELOAD_BUTTON);
 100   html->AddLocalizedString("batteryChargePercentageHeader",
 101                            IDS_ABOUT_POWER_BATTERY_CHARGE_PERCENTAGE_HEADER);
 102   html->AddLocalizedString("batteryDischargeRateHeader",
 103                            IDS_ABOUT_POWER_BATTERY_DISCHARGE_RATE_HEADER);
 104   html->AddLocalizedString("negativeDischargeRateInfo",
 105                            IDS_ABOUT_POWER_NEGATIVE_DISCHARGE_RATE_INFO);
 106   html->AddLocalizedString("notEnoughDataAvailableYet",
 107                            IDS_ABOUT_POWER_NOT_ENOUGH_DATA);
 108   html->AddLocalizedString("systemSuspended",
 109                            IDS_ABOUT_POWER_SYSTEM_SUSPENDED);
 110   html->SetJsonPath(kStringsJsFile);
 111
 112   html->AddResourcePath("power.css", IDR_ABOUT_POWER_CSS);
 113   html->AddResourcePath("power.js", IDR_ABOUT_POWER_JS);
 114   html->SetDefaultResource(IDR_ABOUT_POWER_HTML);
 115
 116   Profile* profile = Profile::FromWebUI(web_ui);
 117   content::WebUIDataSource::Add(profile, html);
 118 }
 119
 120 PowerUI::~PowerUI() {
 121 }
 122
 123 }  // namespace chromeos