ozone: evdev: Add gamepad support

ui/events/ozone/evdev/event_factory_evdev.h

 // Copyright 2014 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 UI_EVENTS_OZONE_EVDEV_EVENT_FACTORY_EVDEV_H_
 #define UI_EVENTS_OZONE_EVDEV_EVENT_FACTORY_EVDEV_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/task_runner.h"
 #include "ui/events/ozone/device/device_event_observer.h"
 #include "ui/events/ozone/evdev/device_event_dispatcher_evdev.h"
 #include "ui/events/ozone/evdev/event_modifiers_evdev.h"
 #include "ui/events/ozone/evdev/event_thread_evdev.h"
 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
 #include "ui/events/ozone/evdev/input_controller_evdev.h"
 #include "ui/events/ozone/evdev/keyboard_evdev.h"
 #include "ui/events/ozone/evdev/mouse_button_map_evdev.h"
+#include "ui/events/ozone/gamepad/gamepad_event.h"
 #include "ui/events/platform/platform_event_source.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/sequential_id_generator.h"
 #include "ui/ozone/public/system_input_injector.h"
 
 namespace gfx {
 class PointF;
 }  // namespace gfx
 
 namespace ui {
 
 class CursorDelegateEvdev;
 class DeviceManager;
 class InputDeviceFactoryEvdev;
 class InputDeviceFactoryEvdevProxy;
 class SystemInputInjector;
+class GamepadProviderOzone;
 enum class DomCode;
 enum class StylusState;
 
 #if !defined(USE_EVDEV)
 #error Missing dependency on ui/events/ozone:events_ozone_evdev
 #endif
 
 // Ozone events implementation for the Linux input subsystem ("evdev").
 //
 // This is a UI thread object, but creates its own thread for I/O. See
@@ skipping 27 matching lines @@
 
   // Device lifecycle events.
   void DispatchKeyboardDevicesUpdated(const std::vector<InputDevice>& devices);
   void DispatchTouchscreenDevicesUpdated(
       const std::vector<TouchscreenDevice>& devices);
   void DispatchMouseDevicesUpdated(const std::vector<InputDevice>& devices);
   void DispatchTouchpadDevicesUpdated(const std::vector<InputDevice>& devices);
   void DispatchDeviceListsComplete();
   void DispatchStylusStateChanged(StylusState stylus_state);
 
+  // Gamepad event and gamepad device event. These events are dispatched to
+  // GamepadObserver through GamepadProviderOzone.
+  void DispatchGamepadEvent(const GamepadEvent& event);
+  void DispatchGamepadDevicesUpdated(const std::vector<InputDevice>& devices);
+
  protected:
   // DeviceEventObserver overrides:
   //
   // Callback for device add (on UI thread).
   void OnDeviceEvent(const DeviceEvent& event) override;
 
   // PlatformEventSource:
   void OnDispatcherListChanged() override;
 
  private:
   // Dispatch event via PlatformEventSource.
   void DispatchUiEvent(ui::Event* event);
 
   int NextDeviceId();
 
   // Device thread initialization.
   void StartThread();
   void OnThreadStarted(
       std::unique_ptr<InputDeviceFactoryEvdevProxy> input_device_factory);
 
   // Used to uniquely identify input devices.
   int last_device_id_ = 0;
 
   // Interface for scanning & monitoring input devices.
   DeviceManager* device_manager_;  // Not owned.
 
+  // Gamepad provider to dispatch gamepad events.
+  GamepadProviderOzone* gamepad_provider_;
+
   // Proxy for input device factory (manages device I/O objects).
   // The real object lives on a different thread.
   std::unique_ptr<InputDeviceFactoryEvdevProxy> input_device_factory_proxy_;
 
   // Modifier key state (shift, ctrl, etc).
   EventModifiersEvdev modifiers_;
 
   // Mouse button map.
   MouseButtonMapEvdev button_map_;
 
@@ skipping 17 matching lines @@
 
   // Support weak pointers for attach & detach callbacks.
   base::WeakPtrFactory<EventFactoryEvdev> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EventFactoryEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_EVENT_FACTORY_EVDEV_H_