| // Copyright 2021 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_LACROS_DEVICE_SETTINGS_LACROS_H_ |
| #define CHROME_BROWSER_LACROS_DEVICE_SETTINGS_LACROS_H_ |
| |
| #include "base/memory/weak_ptr.h" |
| #include "base/observer_list.h" |
| #include "base/observer_list_types.h" |
| #include "base/sequence_checker.h" |
| #include "base/thread_annotations.h" |
| #include "chromeos/crosapi/mojom/device_settings_service.mojom.h" |
| #include "mojo/public/cpp/bindings/receiver.h" |
| |
| // The keeper of device settings needed for Lacros. Initializes with current |
| // value at startup and receives the updates from ash when the settings are |
| // changed. Lacros should use the device settings provided by this class when |
| // needs to use any device settings. |
| class DeviceSettingsLacros : public crosapi::mojom::DeviceSettingsObserver { |
| public: |
| // Observer that is notified on certain events like device settings updates in |
| // Ash. |
| class Observer : public base::CheckedObserver { |
| public: |
| Observer() = default; |
| Observer(const Observer&) = delete; |
| Observer& operator=(const Observer&) = delete; |
| ~Observer() override = default; |
| |
| // Triggered when device settings are updated, |
| virtual void OnDeviceSettingsUpdated() {} |
| }; |
| |
| DeviceSettingsLacros(); |
| DeviceSettingsLacros(const DeviceSettingsLacros&) = delete; |
| DeviceSettingsLacros& operator=(const DeviceSettingsLacros&) = delete; |
| ~DeviceSettingsLacros() override; |
| |
| // Returns device settings that were retrieved from Ash via crosapi. Needs to |
| // be accessed in a valid sequence for thread safety. |
| crosapi::mojom::DeviceSettings* GetDeviceSettings(); |
| |
| // crosapi::mojom::DeviceSettingsObserver: |
| // Updated device settings as they are recorded in Ash. Needs to run in a |
| // valid sequence for thread safety. |
| void UpdateDeviceSettings( |
| crosapi::mojom::DeviceSettingsPtr device_settings) override; |
| |
| void AddObserver(Observer* observer); |
| void RemoveObserver(Observer* observer); |
| |
| private: |
| void Init(); |
| |
| SEQUENCE_CHECKER(sequence_checker_); |
| |
| crosapi::mojom::DeviceSettingsPtr device_settings_ |
| GUARDED_BY_CONTEXT(sequence_checker_); |
| base::ObserverList<DeviceSettingsLacros::Observer> observers_; |
| |
| mojo::Receiver<crosapi::mojom::DeviceSettingsObserver> receiver_{this}; |
| base::WeakPtrFactory<DeviceSettingsLacros> weak_ptr_factory_{this}; |
| }; |
| |
| #endif // CHROME_BROWSER_LACROS_DEVICE_SETTINGS_LACROS_H_ |