1 // Copyright (c) 2012 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.
5 #ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_
6 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_
12 #include "base/memory/scoped_ptr.h"
13 #include "base/observer_list.h"
14 #include "base/threading/thread_checker.h"
15 #include "chrome/browser/chromeos/input_method/candidate_window_controller.h"
16 #include "chrome/browser/chromeos/input_method/input_method_util.h"
17 #include "chrome/browser/profiles/profile.h"
18 #include "chromeos/ime/input_method_manager.h"
19 #include "chromeos/ime/input_method_whitelist.h"
22 class ComponentExtensionIMEManager;
23 class ComponentExtensionIMEManagerDelegate;
24 class InputMethodEngine;
25 namespace input_method {
26 class InputMethodDelegate;
29 // The implementation of InputMethodManager.
30 class InputMethodManagerImpl : public InputMethodManager,
31 public CandidateWindowController::Observer {
33 // Constructs an InputMethodManager instance. The client is responsible for
34 // calling |SetState| in response to relevant changes in browser state.
35 explicit InputMethodManagerImpl(scoped_ptr<InputMethodDelegate> delegate);
36 virtual ~InputMethodManagerImpl();
38 // Attach CandidateWindowController, and ImeKeyboard objects to the
39 // InputMethodManagerImpl object. You don't have to call this
40 // function if you attach them yourself (e.g. in unit tests) using
41 // the protected setters.
42 void Init(base::SequencedTaskRunner* ui_task_runner);
44 // Receives notification of an InputMethodManager::State transition.
45 void SetState(State new_state);
47 // InputMethodManager override:
48 virtual void AddObserver(InputMethodManager::Observer* observer) OVERRIDE;
49 virtual void AddCandidateWindowObserver(
50 InputMethodManager::CandidateWindowObserver* observer) OVERRIDE;
51 virtual void RemoveObserver(InputMethodManager::Observer* observer) OVERRIDE;
52 virtual void RemoveCandidateWindowObserver(
53 InputMethodManager::CandidateWindowObserver* observer) OVERRIDE;
54 virtual scoped_ptr<InputMethodDescriptors>
55 GetSupportedInputMethods() const OVERRIDE;
56 virtual scoped_ptr<InputMethodDescriptors>
57 GetActiveInputMethods() const OVERRIDE;
58 virtual const std::vector<std::string>& GetActiveInputMethodIds() const
60 virtual size_t GetNumActiveInputMethods() const OVERRIDE;
61 virtual const InputMethodDescriptor* GetInputMethodFromId(
62 const std::string& input_method_id) const OVERRIDE;
63 virtual void EnableLoginLayouts(
64 const std::string& language_code,
65 const std::vector<std::string>& initial_layouts) OVERRIDE;
66 virtual bool ReplaceEnabledInputMethods(
67 const std::vector<std::string>& new_active_input_method_ids) OVERRIDE;
68 virtual bool EnableInputMethod(const std::string& new_active_input_method_id)
70 virtual void ChangeInputMethod(const std::string& input_method_id) OVERRIDE;
71 virtual void ActivateInputMethodMenuItem(const std::string& key) OVERRIDE;
72 virtual void AddInputMethodExtension(
74 const std::string& id,
75 InputMethodEngineInterface* instance) OVERRIDE;
76 virtual void RemoveInputMethodExtension(Profile* profile,
77 const std::string& id) OVERRIDE;
78 virtual void GetInputMethodExtensions(
79 InputMethodDescriptors* result) OVERRIDE;
80 virtual void SetEnabledExtensionImes(std::vector<std::string>* ids) OVERRIDE;
81 virtual void SetInputMethodLoginDefault() OVERRIDE;
82 virtual void SetInputMethodLoginDefaultFromVPD(
83 const std::string& locale, const std::string& layout) OVERRIDE;
84 virtual bool SwitchToNextInputMethod() OVERRIDE;
85 virtual bool SwitchToPreviousInputMethod(
86 const ui::Accelerator& accelerator) OVERRIDE;
87 virtual bool SwitchInputMethod(const ui::Accelerator& accelerator) OVERRIDE;
88 virtual InputMethodDescriptor GetCurrentInputMethod() const OVERRIDE;
89 virtual bool IsISOLevel5ShiftUsedByCurrentInputMethod() const OVERRIDE;
90 virtual bool IsAltGrUsedByCurrentInputMethod() const OVERRIDE;
92 virtual ImeKeyboard* GetImeKeyboard() OVERRIDE;
93 virtual InputMethodUtil* GetInputMethodUtil() OVERRIDE;
94 virtual ComponentExtensionIMEManager*
95 GetComponentExtensionIMEManager() OVERRIDE;
96 virtual bool IsLoginKeyboard(const std::string& layout) const OVERRIDE;
98 virtual bool MigrateInputMethods(
99 std::vector<std::string>* input_method_ids) OVERRIDE;
101 // Sets |candidate_window_controller_|.
102 void SetCandidateWindowControllerForTesting(
103 CandidateWindowController* candidate_window_controller);
105 void SetImeKeyboardForTesting(ImeKeyboard* keyboard);
106 // Initialize |component_extension_manager_|.
107 void InitializeComponentExtensionForTesting(
108 scoped_ptr<ComponentExtensionIMEManagerDelegate> delegate);
111 friend class InputMethodManagerImplTest;
113 // CandidateWindowController::Observer overrides:
114 virtual void CandidateClicked(int index) OVERRIDE;
115 virtual void CandidateWindowOpened() OVERRIDE;
116 virtual void CandidateWindowClosed() OVERRIDE;
118 // Temporarily deactivates all input methods (e.g. Chinese, Japanese, Arabic)
119 // since they are not necessary to input a login password. Users are still
120 // able to use/switch active keyboard layouts (e.g. US qwerty, US dvorak,
122 void OnScreenLocked();
124 // Resumes the original state by activating input methods and/or changing the
125 // current input method as needed.
126 void OnScreenUnlocked();
128 // Returns true if |input_method_id| is in |active_input_method_ids_|.
129 bool InputMethodIsActivated(const std::string& input_method_id);
131 // Returns true if the given input method config value is a string list
132 // that only contains an input method ID of a keyboard layout.
133 bool ContainsOnlyKeyboardLayout(const std::vector<std::string>& value);
135 // Creates and initializes |candidate_window_controller_| if it hasn't been
137 void MaybeInitializeCandidateWindowController();
139 // If |current_input_method_id_| is not in |input_method_ids|, switch to
140 // input_method_ids[0]. If the ID is equal to input_method_ids[N], switch to
141 // input_method_ids[N+1].
142 void SwitchToNextInputMethodInternal(
143 const std::vector<std::string>& input_method_ids,
144 const std::string& current_input_method_id);
146 // Change system input method.
147 // Returns true if the system input method is changed.
148 bool ChangeInputMethodInternal(const std::string& input_method_id,
151 // Gets whether the XKB extension is loaded successfully by checking the XKB
152 // input methods in input methods in |component_extension_ime_manager_|.
153 bool IsXkbComponentExtensionAvailable() const;
155 // Called when the ComponentExtensionIMEManagerDelegate is initialized.
156 void OnComponentExtensionInitialized(
157 scoped_ptr<ComponentExtensionIMEManagerDelegate> delegate);
158 void InitializeComponentExtension();
160 // Loads necessary component extensions.
161 // TODO(nona): Support dynamical unloading.
162 void LoadNecessaryComponentExtensions();
164 // Adds new input method to given list if possible
165 bool EnableInputMethodImpl(
166 const std::string& input_method_id,
167 std::vector<std::string>* new_active_input_method_ids) const;
169 // Starts or stops the system input method framework as needed.
170 // (after list of enabled input methods has been updated)
171 void ReconfigureIMFramework();
173 // Gets the current active user profile.
174 // Note: this method is deprecated as ActiveUserProfile might change
175 // during asynchronous operations that leads to strange crashes.
177 Profile* GetProfile() const;
179 scoped_ptr<InputMethodDelegate> delegate_;
181 // The current browser status.
184 // A list of objects that monitor the manager.
185 ObserverList<InputMethodManager::Observer> observers_;
186 ObserverList<CandidateWindowObserver> candidate_window_observers_;
188 // The input method which was/is selected.
189 InputMethodDescriptor previous_input_method_;
190 InputMethodDescriptor current_input_method_;
191 // The active input method ids cache.
192 std::vector<std::string> active_input_method_ids_;
194 // The list of enabled extension IMEs.
195 std::vector<std::string> enabled_extension_imes_;
197 // For screen locker. When the screen is locked, |previous_input_method_|,
198 // |current_input_method_|, and |active_input_method_ids_| above are copied
199 // to these "saved" variables.
200 InputMethodDescriptor saved_previous_input_method_;
201 InputMethodDescriptor saved_current_input_method_;
202 std::vector<std::string> saved_active_input_method_ids_;
204 // Extra input methods that have been explicitly added to the menu, such as
205 // those created by extension.
206 std::map<std::string, InputMethodDescriptor> extra_input_methods_;
208 // The candidate window. This will be deleted when the APP_TERMINATING
210 scoped_ptr<CandidateWindowController> candidate_window_controller_;
212 // The object which can create an InputMethodDescriptor object.
213 InputMethodWhitelist whitelist_;
215 // An object which provides miscellaneous input method utility functions. Note
216 // that |util_| is required to initialize |keyboard_|.
217 InputMethodUtil util_;
219 // An object which provides component extension ime management functions.
220 scoped_ptr<ComponentExtensionIMEManager> component_extension_ime_manager_;
222 // An object for switching XKB layouts and keyboard status like caps lock and
223 // auto-repeat interval.
224 scoped_ptr<ImeKeyboard> keyboard_;
226 std::string pending_input_method_;
228 base::ThreadChecker thread_checker_;
230 base::WeakPtrFactory<InputMethodManagerImpl> weak_ptr_factory_;
233 // { Profile : { input_method_id : Engine } }.
234 typedef std::map<std::string, InputMethodEngineInterface*>
236 typedef std::map<Profile*, EngineMap, ProfileCompare> ProfileEngineMap;
237 ProfileEngineMap profile_engine_map_;
239 DISALLOW_COPY_AND_ASSIGN(InputMethodManagerImpl);
242 } // namespace input_method
243 } // namespace chromeos
245 #endif // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_