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_BATTERY_STATUS_BATTERY_STATUS_MANAGER_H_ 6 #define CHROME_BROWSER_BATTERY_STATUS_BATTERY_STATUS_MANAGER_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "build/build_config.h" 10 #include "content/browser/battery_status/battery_status_service.h" 11 12 namespace content { 13 14 // Platform specific manager class for fetching battery status data. 15 class CONTENT_EXPORT BatteryStatusManager { 16 public: 17 // Creates a BatteryStatusManager object. |callback| should be called when the 18 // battery status changes. 19 static scoped_ptr<BatteryStatusManager> Create( 20 const BatteryStatusService::BatteryUpdateCallback& callback); 21 ~BatteryStatusManager()22 virtual ~BatteryStatusManager() {} 23 24 // Start listening for battery status changes. New updates are signalled 25 // by invoking the callback provided at construction time. 26 // Note that this is called in the IO thread. 27 virtual bool StartListeningBatteryChange() = 0; 28 29 // Stop listening for battery status changes. 30 // Note that this is called in the IO thread. 31 virtual void StopListeningBatteryChange() = 0; 32 }; 33 34 } // namespace content 35 36 #endif // CHROME_BROWSER_BATTERY_STATUS_BATTERY_STATUS_MANAGER_H_ 37