| // Copyright 2015 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 CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_POWER_OBSERVER_H_ |
| #define CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_POWER_OBSERVER_H_ |
| |
| #include "base/bind.h" |
| #include "base/power_monitor/power_observer.h" |
| #include "content/browser/background_sync/background_sync.pb.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| // BackgroundSyncPowerObserver monitors the charging status of the device and |
| // determines if the power conditions of BackgroundSyncRegistrations are met. |
| class CONTENT_EXPORT BackgroundSyncPowerObserver : public base::PowerObserver { |
| public: |
| // Creates a BackgroundSyncPowerObserver. |power_callback| is run when the |
| // battery states changes asynchronously via PostMessage. |
| explicit BackgroundSyncPowerObserver(const base::Closure& power_callback); |
| |
| ~BackgroundSyncPowerObserver() override; |
| |
| // Returns true if the state of the battery (charging or not) meets the needs |
| // of |power_state|. |
| bool PowerSufficient(SyncPowerState power_state) const; |
| |
| private: |
| friend class BackgroundSyncPowerObserverTest; |
| |
| // PowerObserver overrides |
| void OnPowerStateChange(bool on_battery_power) override; |
| |
| // |observing_power_monitor_| is true when the constructor is able to find and |
| // register an observer with the base::PowerMonitor. This should always be |
| // true except for tests in which the browser initialization isn't done. |
| bool observing_power_monitor_; |
| |
| bool on_battery_; |
| |
| // The callback to run when the battery state changes. |
| base::Closure power_changed_callback_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BackgroundSyncPowerObserver); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_POWER_OBSERVER_H_ |