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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_IME_CHROMEOS_IME_KEYBOARD_H_ | 5 #ifndef UI_BASE_IME_CHROMEOS_IME_KEYBOARD_H_ |
6 #define UI_BASE_IME_CHROMEOS_IME_KEYBOARD_H_ | 6 #define UI_BASE_IME_CHROMEOS_IME_KEYBOARD_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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32 // in user preferences. | 32 // in user preferences. |
33 kNumModifierKeys, | 33 kNumModifierKeys, |
34 }; | 34 }; |
35 | 35 |
36 class UI_BASE_IME_EXPORT ImeKeyboard { | 36 class UI_BASE_IME_EXPORT ImeKeyboard { |
37 public: | 37 public: |
38 class Observer { | 38 class Observer { |
39 public: | 39 public: |
40 // Called when the caps lock state has changed. | 40 // Called when the caps lock state has changed. |
41 virtual void OnCapsLockChanged(bool enabled) = 0; | 41 virtual void OnCapsLockChanged(bool enabled) = 0; |
| 42 |
| 43 // Called when the layout state is changing. |
| 44 virtual void OnLayoutChanging(const std::string& layout_name) = 0; |
42 }; | 45 }; |
43 | 46 |
44 ImeKeyboard(); | 47 ImeKeyboard(); |
45 virtual ~ImeKeyboard(); | 48 virtual ~ImeKeyboard(); |
46 // Adds/removes observer. | 49 // Adds/removes observer. |
47 virtual void AddObserver(Observer* observer); | 50 virtual void AddObserver(Observer* observer); |
48 virtual void RemoveObserver(Observer* observer); | 51 virtual void RemoveObserver(Observer* observer); |
49 | 52 |
50 // Sets the current keyboard layout to |layout_name|. This function does not | 53 // Sets the current keyboard layout to |layout_name|. This function does not |
51 // change the current mapping of the modifier keys. Returns true on success. | 54 // change the current mapping of the modifier keys. Returns true on success. |
52 virtual bool SetCurrentKeyboardLayoutByName( | 55 virtual bool SetCurrentKeyboardLayoutByName(const std::string& layout_name); |
53 const std::string& layout_name) = 0; | 56 |
| 57 // Gets the current keyboard layout name. |
| 58 const std::string& GetCurrentKeyboardLayoutName() const { |
| 59 return last_layout_; |
| 60 } |
54 | 61 |
55 // Sets the current keyboard layout again. We have to call the function every | 62 // Sets the current keyboard layout again. We have to call the function every |
56 // time when "XI_HierarchyChanged" XInput2 event is sent to Chrome. See | 63 // time when "XI_HierarchyChanged" XInput2 event is sent to Chrome. See |
57 // xinput_hierarchy_changed_event_listener.h for details. | 64 // xinput_hierarchy_changed_event_listener.h for details. |
58 virtual bool ReapplyCurrentKeyboardLayout() = 0; | 65 virtual bool ReapplyCurrentKeyboardLayout() = 0; |
59 | 66 |
60 // Updates keyboard LEDs on all keyboards. | 67 // Updates keyboard LEDs on all keyboards. |
61 // XKB asymmetrically propagates keyboard modifier indicator state changes to | 68 // XKB asymmetrically propagates keyboard modifier indicator state changes to |
62 // slave keyboards. If the state change is initiated from a client to the | 69 // slave keyboards. If the state change is initiated from a client to the |
63 // "core/master keyboard", XKB changes global state and pushes an indication | 70 // "core/master keyboard", XKB changes global state and pushes an indication |
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114 std::string last_layout_; | 121 std::string last_layout_; |
115 | 122 |
116 private: | 123 private: |
117 base::ObserverList<Observer> observers_; | 124 base::ObserverList<Observer> observers_; |
118 }; | 125 }; |
119 | 126 |
120 } // namespace input_method | 127 } // namespace input_method |
121 } // namespace chromeos | 128 } // namespace chromeos |
122 | 129 |
123 #endif // UI_BASE_IME_CHROMEOS_IME_KEYBOARD_H_ | 130 #endif // UI_BASE_IME_CHROMEOS_IME_KEYBOARD_H_ |
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