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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "base/observer_list.h" | |
6 #include "ui/chromeos/ime/input_method_menu_item.h" | |
7 #include "ui/chromeos/ui_chromeos_export.h" | |
8 | |
9 #ifndef UI_CHROMEOS_IME_INPUT_METHOD_MENU_MANAGER_H_ | |
10 #define UI_CHROMEOS_IME_INPUT_METHOD_MENU_MANAGER_H_ | |
11 | |
12 template<typename Type> struct DefaultSingletonTraits; | |
13 | |
14 namespace ui { | |
15 namespace ime { | |
16 | |
17 class UI_CHROMEOS_EXPORT InputMethodMenuManager { | |
18 public: | |
19 class Observer { | |
20 public: | |
21 virtual ~Observer() {} | |
22 | |
23 // Called when the list of menu items is changed. | |
24 virtual void InputMethodMenuItemChanged( | |
25 InputMethodMenuManager* manager) = 0; | |
26 }; | |
27 | |
28 ~InputMethodMenuManager(); | |
29 | |
30 void AddObserver(Observer* observer); | |
31 void RemoveObserver(Observer* observer); | |
32 | |
33 // Obtains the singleton instance. | |
34 static InputMethodMenuManager* GetInstance(); | |
35 | |
36 // Sets the list of input method menu items. The list could be empty(). | |
37 void SetCurrentInputMethodMenuItemList( | |
38 const InputMethodMenuItemList& menu_list); | |
39 | |
40 // Gets the list of input method menu items. The list could be empty(). | |
41 InputMethodMenuItemList GetCurrentInputMethodMenuItemList() const; | |
42 | |
43 // True if the key exists in the menu_list_. | |
44 bool HasInputMethodMenuItemForKey(const std::string& key) const; | |
45 | |
46 private: | |
47 InputMethodMenuManager(); | |
48 | |
49 // For Singleton to be able to construct an instance. | |
50 friend struct DefaultSingletonTraits<InputMethodMenuManager>; | |
51 | |
52 // Menu item list of the input method. This is set by extension IMEs. | |
53 InputMethodMenuItemList menu_list_; | |
54 | |
55 // Observers who will be notified when menu changes. | |
56 ObserverList<Observer> observers_; | |
57 | |
58 DISALLOW_COPY_AND_ASSIGN(InputMethodMenuManager); | |
59 }; | |
60 | |
61 } // namespace ime | |
62 } // namespace ui | |
63 | |
64 #endif // UI_CHROMEOS_IME_INPUT_METHOD_MENU_MANAGER_H_ | |
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