OLD | NEW |
1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_BASE_ACCELERATORS_ACCELERATOR_HISTORY_H_ | 5 #ifndef UI_BASE_ACCELERATORS_ACCELERATOR_HISTORY_H_ |
6 #define UI_BASE_ACCELERATORS_ACCELERATOR_HISTORY_H_ | 6 #define UI_BASE_ACCELERATORS_ACCELERATOR_HISTORY_H_ |
7 | 7 |
8 #include "base/memory/singleton.h" | 8 #include "base/memory/singleton.h" |
9 #include "ui/base/accelerators/accelerator.h" | 9 #include "ui/base/accelerators/accelerator.h" |
10 #include "ui/base/ui_base_export.h" | 10 #include "ui/base/ui_base_export.h" |
11 #include "ui/events/event.h" | 11 #include "ui/events/event.h" |
12 #include "ui/events/event_handler.h" | 12 #include "ui/events/event_handler.h" |
13 | 13 |
14 namespace ui { | 14 namespace ui { |
15 | 15 |
16 // Keeps track of the system-wide current and the most recent previous | 16 // Keeps track of the system-wide current and the most recent previous |
17 // key accelerators. | 17 // key accelerators. |
18 class UI_BASE_EXPORT AcceleratorHistory { | 18 class UI_BASE_EXPORT AcceleratorHistory { |
19 public: | 19 public: |
20 AcceleratorHistory(); | 20 AcceleratorHistory(); |
21 ~AcceleratorHistory(); | 21 ~AcceleratorHistory(); |
22 | 22 |
23 // Returns the most recent recorded accelerator. | 23 // Returns the most recent recorded accelerator. |
24 const Accelerator& current_accelerator() const { | 24 const Accelerator& current_accelerator() const { |
25 return current_accelerator_; | 25 return current_accelerator_; |
26 } | 26 } |
27 | 27 |
28 // Returns the most recent previously recorded key accelerator that is | 28 // Returns the most recent previously recorded accelerator that is different |
29 // different than the current. Non-synthesized mouse events will be stored | 29 // than the current. |
30 // in the histroy as an empty accelerator. | |
31 const Accelerator& previous_accelerator() const { | 30 const Accelerator& previous_accelerator() const { |
32 return previous_accelerator_; | 31 return previous_accelerator_; |
33 } | 32 } |
34 | 33 |
35 // Stores the given |accelerator| only if it's different than the currently | 34 // Stores the given |accelerator| only if it's different than the currently |
36 // stored one. | 35 // stored one. |
37 void StoreCurrentAccelerator(const Accelerator& accelerator); | 36 void StoreCurrentAccelerator(const Accelerator& accelerator); |
38 | 37 |
39 private: | 38 private: |
40 Accelerator current_accelerator_; | 39 Accelerator current_accelerator_; |
41 Accelerator previous_accelerator_; | 40 Accelerator previous_accelerator_; |
42 | 41 |
43 DISALLOW_COPY_AND_ASSIGN(AcceleratorHistory); | 42 DISALLOW_COPY_AND_ASSIGN(AcceleratorHistory); |
44 }; | 43 }; |
45 | 44 |
46 }; // namespace ui | 45 }; // namespace ui |
47 | 46 |
48 #endif // UI_BASE_ACCELERATORS_ACCELERATOR_HISTORY_H_ | 47 #endif // UI_BASE_ACCELERATORS_ACCELERATOR_HISTORY_H_ |
OLD | NEW |