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- // Copyright 2018 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 DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_DEVICE_WATCHER_MAC_H_
- #define DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_DEVICE_WATCHER_MAC_H_
- #include <map>
- #include <memory>
- #include <string>
- #include "base/callback.h"
- #include "base/files/file_path.h"
- #include "base/files/file_path_watcher.h"
- #include "base/memory/ref_counted.h"
- #include "base/sequence_checker.h"
- #include "base/task/cancelable_task_tracker.h"
- #include "base/task/sequenced_task_runner.h"
- #include "base/task/thread_pool.h"
- #include "device/bluetooth/bluetooth_export.h"
- @class NSDictionary;
- namespace device {
- // Manages watching and reading system bluetooth property list file in
- // background thread to obtain a list of known Bluetooth low energy devices.
- class DEVICE_BLUETOOTH_EXPORT BluetoothLowEnergyDeviceWatcherMac
- : public base::RefCountedThreadSafe<BluetoothLowEnergyDeviceWatcherMac> {
- public:
- using LowEnergyDeviceListUpdatedCallback =
- base::RepeatingCallback<void(std::map<std::string, std::string>)>;
- static scoped_refptr<BluetoothLowEnergyDeviceWatcherMac>
- CreateAndStartWatching(
- scoped_refptr<base::SequencedTaskRunner> main_thread_task_runner,
- LowEnergyDeviceListUpdatedCallback
- update_low_energy_device_list_callback);
- BluetoothLowEnergyDeviceWatcherMac(
- const BluetoothLowEnergyDeviceWatcherMac&) = delete;
- BluetoothLowEnergyDeviceWatcherMac& operator=(
- const BluetoothLowEnergyDeviceWatcherMac&) = delete;
- BluetoothLowEnergyDeviceWatcherMac(
- scoped_refptr<base::SequencedTaskRunner> main_thread_task_runner,
- LowEnergyDeviceListUpdatedCallback
- update_low_energy_device_list_callback);
- protected:
- virtual ~BluetoothLowEnergyDeviceWatcherMac();
- // Read system bluetooth property list file for change and fetches
- // identifier and device address of system paired bluetooth devices.
- void OnPropertyListFileChangedOnFileThread(const base::FilePath& path,
- bool error);
- // Overriden in tests.
- virtual void Init();
- virtual void ReadBluetoothPropertyListFile();
- std::map<std::string, std::string> ParseBluetoothDevicePropertyListData(
- NSDictionary* data);
- LowEnergyDeviceListUpdatedCallback low_energy_device_list_updated_callback() {
- return low_energy_device_list_updated_callback_;
- }
- scoped_refptr<base::SequencedTaskRunner> ui_thread_task_runner() {
- return ui_thread_task_runner_;
- }
- private:
- friend class BluetoothAdapterMac;
- friend class base::RefCountedThreadSafe<BluetoothLowEnergyDeviceWatcherMac>;
- void AddBluetoothPropertyListFileWatcher();
- static const base::FilePath& BluetoothPlistFilePath();
- // Thread runner to watch, read, and parse bluetooth property list file.
- scoped_refptr<base::SequencedTaskRunner> file_thread_task_runner_ =
- base::ThreadPool::CreateSequencedTaskRunner(
- {base::MayBlock(), base::TaskPriority::BEST_EFFORT,
- base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN});
- scoped_refptr<base::SequencedTaskRunner> ui_thread_task_runner_;
- LowEnergyDeviceListUpdatedCallback low_energy_device_list_updated_callback_;
- std::unique_ptr<base::FilePathWatcher> property_list_watcher_ =
- std::make_unique<base::FilePathWatcher>();
- SEQUENCE_CHECKER(sequence_checker_);
- };
- } // namespace device
- #endif // DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_DEVICE_WATCHER_MAC_H_
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