ui/events/ozone/evdev/input_device_factory_evdev.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_EVDEV_INPUT_DEVICE_FACTORY_EVDEV_H_
   6 #define UI_EVENTS_OZONE_EVDEV_INPUT_DEVICE_FACTORY_EVDEV_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <vector>
  11
  12 #include "base/callback.h"
  13 #include "base/compiler_specific.h"
  14 #include "base/files/file_path.h"
  15 #include "base/memory/ref_counted.h"
  16 #include "base/task_runner.h"
  17 #include "ui/events/ozone/evdev/event_converter_evdev.h"
  18 #include "ui/events/ozone/evdev/event_device_info.h"
  19 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
  20 #include "ui/events/ozone/evdev/input_device_settings_evdev.h"
  21
  22 namespace ui {
  23
  24 class CursorDelegateEvdev;
  25 class DeviceEventDispatcherEvdev;
  26 class InputDeviceFactoryEvdevProxy;
  27
  28 #if !defined(USE_EVDEV)
  29 #error Missing dependency on ui/events/ozone:events_ozone_evdev
  30 #endif
  31
  32 #if defined(USE_EVDEV_GESTURES)
  33 class GesturePropertyProvider;
  34 #endif
  35
  36 typedef base::Callback<void(scoped_ptr<std::string>)> GetTouchDeviceStatusReply;
  37 typedef base::Callback<void(scoped_ptr<std::vector<base::FilePath>>)>
  38     GetTouchEventLogReply;
  39
  40 // Manager for event device objects. All device I/O starts here.
  41 class EVENTS_OZONE_EVDEV_EXPORT InputDeviceFactoryEvdev {
  42  public:
  43   InputDeviceFactoryEvdev(scoped_ptr<DeviceEventDispatcherEvdev> dispatcher,
  44                           CursorDelegateEvdev* cursor);
  45   ~InputDeviceFactoryEvdev();
  46
  47   // Open & start reading a newly plugged-in input device.
  48   void AddInputDevice(int id, const base::FilePath& path);
  49
  50   // Stop reading & close an unplugged input device.
  51   void RemoveInputDevice(const base::FilePath& path);
  52
  53   // Device thread handler for initial scan completion.
  54   void OnStartupScanComplete();
  55
  56   // LED state.
  57   void SetCapsLockLed(bool enabled);
  58
  59   // Bits from InputController that have to be answered on IO.
  60   void UpdateInputDeviceSettings(const InputDeviceSettingsEvdev& settings);
  61   void GetTouchDeviceStatus(const GetTouchDeviceStatusReply& reply);
  62   void GetTouchEventLog(const base::FilePath& out_dir,
  63                         const GetTouchEventLogReply& reply);
  64
  65   base::WeakPtr<InputDeviceFactoryEvdev> GetWeakPtr();
  66
  67  private:
  68   // Open device at path & starting processing events (on UI thread).
  69   void AttachInputDevice(scoped_ptr<EventConverterEvdev> converter);
  70
  71   // Close device at path (on UI thread).
  72   void DetachInputDevice(const base::FilePath& file_path);
  73
  74   // Sync input_device_settings_ to attached devices.
  75   void ApplyInputDeviceSettings();
  76   void ApplyCapsLockLed();
  77
  78   // Policy for device enablement.
  79   bool IsDeviceEnabled(const EventConverterEvdev* converter);
  80
  81   // Update observers on device changes.
  82   void UpdateDirtyFlags(const EventConverterEvdev* converter);
  83   void NotifyDevicesUpdated();
  84   void NotifyKeyboardsUpdated();
  85   void NotifyTouchscreensUpdated();
  86   void NotifyMouseDevicesUpdated();
  87   void NotifyTouchpadDevicesUpdated();
  88
  89   void SetIntPropertyForOneType(const EventDeviceType type,
  90                                 const std::string& name,
  91                                 int value);
  92   void SetBoolPropertyForOneType(const EventDeviceType type,
  93                                  const std::string& name,
  94                                  bool value);
  95
  96   // Owned per-device event converters (by path).
  97   std::map<base::FilePath, EventConverterEvdev*> converters_;
  98
  99   // Task runner for our thread.
 100   scoped_refptr<base::TaskRunner> task_runner_;
 101
 102   // Cursor movement.
 103   CursorDelegateEvdev* cursor_;
 104
 105 #if defined(USE_EVDEV_GESTURES)
 106   // Gesture library property provider (used by touchpads/mice).
 107   scoped_ptr<GesturePropertyProvider> gesture_property_provider_;
 108 #endif
 109
 110   // Dispatcher for events.
 111   scoped_ptr<DeviceEventDispatcherEvdev> dispatcher_;
 112
 113   // Number of pending device additions & device classes.
 114   int pending_device_changes_ = 0;
 115   bool touchscreen_list_dirty_ = true;
 116   bool keyboard_list_dirty_ = true;
 117   bool mouse_list_dirty_ = true;
 118   bool touchpad_list_dirty_ = true;
 119
 120   // Whether we have a list of devices that were present at startup.
 121   bool startup_devices_enumerated_ = false;
 122
 123   // Whether devices that were present at startup are open.
 124   bool startup_devices_opened_ = false;
 125
 126   // LEDs.
 127   bool caps_lock_led_enabled_ = false;
 128
 129   // Device settings. These primarily affect libgestures behavior.
 130   InputDeviceSettingsEvdev input_device_settings_;
 131
 132   // Support weak pointers for attach & detach callbacks.
 133   base::WeakPtrFactory<InputDeviceFactoryEvdev> weak_ptr_factory_;
 134
 135   DISALLOW_COPY_AND_ASSIGN(InputDeviceFactoryEvdev);
 136 };
 137
 138 }  // namespace ui
 139
 140 #endif  // UI_EVENTS_OZONE_EVDEV_INPUT_DEVICE_FACTORY_EVDEV_H_