| // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_EXTENSIONS_API_POWER_POWER_API_MANAGER_H_ |
| #define CHROME_BROWSER_EXTENSIONS_API_POWER_POWER_API_MANAGER_H_ |
| |
| #include <map> |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/singleton.h" |
| #include "chrome/common/extensions/api/power.h" |
| #include "content/public/browser/notification_observer.h" |
| #include "content/public/browser/notification_registrar.h" |
| #include "content/public/browser/power_save_blocker.h" |
| |
| namespace extensions { |
| |
| class PowerApiManager : public content::NotificationObserver { |
| public: |
| typedef base::Callback<scoped_ptr<content::PowerSaveBlocker>( |
| content::PowerSaveBlocker::PowerSaveBlockerType, |
| const std::string&)> CreateBlockerFunction; |
| |
| static PowerApiManager* GetInstance(); |
| |
| // Adds an extension lock at |level| for |extension_id|, replacing the |
| // extension's existing lock, if any. |
| void AddRequest(const std::string& extension_id, api::power::Level level); |
| |
| // Removes an extension lock for an extension. Calling this for an |
| // extension id without a lock will do nothing. |
| void RemoveRequest(const std::string& extension_id); |
| |
| // Replaces the function that will be called to create PowerSaveBlocker |
| // objects. Passing an empty callback will revert to the default. |
| void SetCreateBlockerFunctionForTesting(CreateBlockerFunction function); |
| |
| // Overridden from content::NotificationObserver. |
| virtual void Observe(int type, |
| const content::NotificationSource& source, |
| const content::NotificationDetails& details) OVERRIDE; |
| |
| private: |
| friend struct DefaultSingletonTraits<PowerApiManager>; |
| |
| PowerApiManager(); |
| virtual ~PowerApiManager(); |
| |
| // Updates |power_save_blocker_| and |current_level_| after iterating |
| // over |extension_levels_|. |
| void UpdatePowerSaveBlocker(); |
| |
| content::NotificationRegistrar registrar_; |
| |
| // Function that should be called to create PowerSaveBlocker objects. |
| // Tests can change this to record what would've been done instead of |
| // actually changing the system power-saving settings. |
| CreateBlockerFunction create_blocker_function_; |
| |
| scoped_ptr<content::PowerSaveBlocker> power_save_blocker_; |
| |
| // Current level used by |power_save_blocker_|. Meaningless if |
| // |power_save_blocker_| is NULL. |
| api::power::Level current_level_; |
| |
| // Map from extension ID to the corresponding level for each extension |
| // that has an outstanding request. |
| typedef std::map<std::string, api::power::Level> ExtensionLevelMap; |
| ExtensionLevelMap extension_levels_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PowerApiManager); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_API_POWER_POWER_API_MANAGER_H_ |