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