ui/aura/input_state_lookup.h

   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
  11 namespace aura {
  12
  13 // InputStateLookup is used to obtain the state of input devices.
  14 class 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_