chrome/browser/ui/webui/options/chromeos/power_handler.h

   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 #ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_POWER_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_POWER_HANDLER_H_
   7
   8 #include "ash/system/chromeos/power/power_status.h"
   9 #include "base/macros.h"
  10 #include "base/strings/string16.h"
  11 #include "chrome/browser/ui/webui/options/options_ui.h"
  12
  13 namespace chromeos {
  14 namespace options {
  15
  16 // Shows battery status and power settings.
  17 class PowerHandler : public ::options::OptionsPageUIHandler,
  18                      public ash::PowerStatus::Observer {
  19  public:
  20   PowerHandler();
  21   ~PowerHandler() override;
  22
  23   // OptionsPageUIHandler implementation.
  24   void GetLocalizedValues(base::DictionaryValue* localized_strings) override;
  25   void InitializePage() override;
  26   void RegisterMessages() override;
  27
  28   // ash::PowerStatus::Observer implementation.
  29   void OnPowerStatusChanged() override;
  30
  31 private:
  32   // Gets the battery status text, showing the percentage and time remaining if
  33   // calculated. Returns an empty string if there is no battery.
  34   base::string16 GetStatusValue() const;
  35
  36   // Handler to request updating the power status.
  37   void UpdatePowerStatus(const base::ListValue* args);
  38
  39   // Handler to change the power source.
  40   void SetPowerSource(const base::ListValue* args);
  41
  42   // Updates the UI with the latest power source information.
  43   void UpdatePowerSources();
  44
  45   // Whether the UI should show the power status.
  46   bool show_power_status_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(PowerHandler);
  49 };
  50
  51 }  // namespace options
  52 }  // namespace chromeos
  53
  54 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_POWER_HANDLER_H_