| // Copyright 2016 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/input_device_manager.h" |
| |
| namespace ui { |
| namespace { |
| |
| InputDeviceManager* g_instance = nullptr; |
| |
| } // namespace |
| |
| // static |
| InputDeviceManager* InputDeviceManager::GetInstance() { |
| DCHECK(g_instance) << "InputDeviceManager::SetInstance must be called before " |
| "getting the instance of InputDeviceManager."; |
| return g_instance; |
| } |
| |
| // static |
| bool InputDeviceManager::HasInstance() { |
| return g_instance; |
| } |
| |
| // static |
| void InputDeviceManager::SetInstance(InputDeviceManager* instance) { |
| DCHECK(!g_instance); |
| g_instance = instance; |
| } |
| |
| // static |
| void InputDeviceManager::ClearInstance() { |
| g_instance = nullptr; |
| } |
| |
| } // namespace ui |