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_ 66
