ozone: evdev: Add gamepad support

ui/events/devices/device_data_manager.cc

 // 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.
 
 #include "ui/events/devices/device_data_manager.h"
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "ui/display/types/display_constants.h"
@@ skipping 133 matching lines @@
 }
 
 const std::vector<InputDevice>& DeviceDataManager::GetMouseDevices() const {
   return mouse_devices_;
 }
 
 const std::vector<InputDevice>& DeviceDataManager::GetTouchpadDevices() const {
   return touchpad_devices_;
 }
 
+const std::vector<InputDevice>& DeviceDataManager::GetGamepadDevices() const {
+  return gamepad_devices_;
+}
+
 bool DeviceDataManager::AreDeviceListsComplete() const {
   return device_lists_complete_;
 }
 
 int64_t DeviceDataManager::GetTargetDisplayForTouchDevice(
     int touch_device_id) const {
   if (IsTouchDeviceIdValid(touch_device_id))
     return touch_map_[touch_device_id].target_display;
   return display::kInvalidDisplayId;
 }
@@ skipping 43 matching lines @@
       std::equal(devices.begin(),
                  devices.end(),
                  touchpad_devices_.begin(),
                  InputDeviceEquals)) {
     return;
   }
   touchpad_devices_ = devices;
   NotifyObserversTouchpadDeviceConfigurationChanged();
 }
 
+void DeviceDataManager::OnGamepadDevicesUpdated(
+    const std::vector<InputDevice>& devices) {
+  if (devices.size() == gamepad_devices_.size() &&
+      std::equal(devices.begin(), devices.end(), gamepad_devices_.begin(),
+                 InputDeviceEquals)) {
+    return;
+  }
+  gamepad_devices_ = devices;
+  NotifyObserversGamepadDeviceConfigurationChanged();
+}
+
 void DeviceDataManager::OnDeviceListsComplete() {
   if (!device_lists_complete_) {
     device_lists_complete_ = true;
     NotifyObserversDeviceListsComplete();
   }
 }
 
 void DeviceDataManager::OnStylusStateChanged(StylusState state) {
   NotifyObserversStylusStateChanged(state);
 }
 
 NOTIFY_OBSERVERS(NotifyObserversTouchscreenDeviceConfigurationChanged(),
                  OnTouchscreenDeviceConfigurationChanged());
 
 NOTIFY_OBSERVERS(NotifyObserversKeyboardDeviceConfigurationChanged(),
                  OnKeyboardDeviceConfigurationChanged());
 
 NOTIFY_OBSERVERS(NotifyObserversMouseDeviceConfigurationChanged(),
                  OnMouseDeviceConfigurationChanged());
 
 NOTIFY_OBSERVERS(NotifyObserversTouchpadDeviceConfigurationChanged(),
                  OnTouchpadDeviceConfigurationChanged());
 
+NOTIFY_OBSERVERS(NotifyObserversGamepadDeviceConfigurationChanged(),
+                 OnGamepadDeviceConfigurationChanged());
+
 NOTIFY_OBSERVERS(NotifyObserversDeviceListsComplete(), OnDeviceListsComplete());
 
 NOTIFY_OBSERVERS(NotifyObserversStylusStateChanged(StylusState state),
                  OnStylusStateChanged(state));
 
 void DeviceDataManager::AddObserver(InputDeviceEventObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void DeviceDataManager::RemoveObserver(InputDeviceEventObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void DeviceDataManager::SetTouchscreensEnabled(bool enabled) {
   touch_screens_enabled_ = enabled;
 }
 
 bool DeviceDataManager::AreTouchscreensEnabled() const {
   return touch_screens_enabled_;
 }
 
 }  // namespace ui