1// Copyright 2013 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_AURA_INPUT_STATE_LOOKUP_H_
6#define UI_AURA_INPUT_STATE_LOOKUP_H_
7
8#include "base/memory/scoped_ptr.h"
9#include "ui/aura/aura_export.h"
10
11namespace aura {
12
13// InputStateLookup is used to obtain the state of input devices.
14class AURA_EXPORT InputStateLookup {
15 public:
16  virtual ~InputStateLookup() {}
17
18  // Creates the platform specific InputStateLookup. May return NULL.
19  static scoped_ptr<InputStateLookup> Create();
20
21  // Returns true if any mouse button is down.
22  virtual bool IsMouseButtonDown() const = 0;
23};
24
25}  // namespace aura
26
27#endif  // UI_AURA_INPUT_STATE_LOOKUP_H_
28