ui/events/ozone/device/udev/device_manager_udev.h

   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 UI_EVENTS_OZONE_DEVICE_UDEV_DEVICE_MANAGER_UDEV_H_
   6 #define UI_EVENTS_OZONE_DEVICE_UDEV_DEVICE_MANAGER_UDEV_H_
   7
   8 #include "base/message_loop/message_pump_libevent.h"
   9 #include "base/observer_list.h"
  10 #include "device/udev_linux/scoped_udev.h"
  11 #include "ui/events/ozone/device/device_manager.h"
  12
  13 namespace ui {
  14
  15 class DeviceEvent;
  16 class DeviceEventObserver;
  17
  18 class DeviceManagerUdev
  19     : public DeviceManager, base::MessagePumpLibevent::Watcher {
  20  public:
  21   DeviceManagerUdev();
  22   ~DeviceManagerUdev() override;
  23
  24  private:
  25   scoped_ptr<DeviceEvent> ProcessMessage(udev_device* device);
  26
  27   // Creates a device-monitor to look for device add/remove/change events.
  28   void CreateMonitor();
  29
  30   // DeviceManager overrides:
  31   void ScanDevices(DeviceEventObserver* observer) override;
  32   void AddObserver(DeviceEventObserver* observer) override;
  33   void RemoveObserver(DeviceEventObserver* observer) override;
  34
  35   // base::MessagePumpLibevent::Watcher overrides:
  36   void OnFileCanReadWithoutBlocking(int fd) override;
  37   void OnFileCanWriteWithoutBlocking(int fd) override;
  38
  39   device::ScopedUdevPtr udev_;
  40   device::ScopedUdevMonitorPtr monitor_;
  41
  42   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
  43
  44   base::ObserverList<DeviceEventObserver> observers_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(DeviceManagerUdev);
  47 };
  48
  49 }  // namespace ui
  50
  51 #endif  // UI_EVENTS_OZONE_DEVICE_UDEV_DEVICE_MANAGER_UDEV_H_