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(
73 const std::string& id,
74 InputMethodEngineInterface* instance) OVERRIDE;
75 virtual void RemoveInputMethodExtension(const std::string& id) OVERRIDE;
76 virtual void GetInputMethodExtensions(
77 InputMethodDescriptors* result) OVERRIDE;
78 virtual void SetEnabledExtensionImes(std::vector<std::string>* ids) OVERRIDE;
79 virtual void SetInputMethodLoginDefault() OVERRIDE;
80 virtual void SetInputMethodLoginDefaultFromVPD(
81 const std::string& locale, const std::string& layout) OVERRIDE;
82 virtual bool SwitchToNextInputMethod() OVERRIDE;
83 virtual bool SwitchToPreviousInputMethod(
84 const ui::Accelerator& accelerator) OVERRIDE;
85 virtual bool SwitchInputMethod(const ui::Accelerator& accelerator) OVERRIDE;
86 virtual InputMethodDescriptor GetCurrentInputMethod() const OVERRIDE;
87 virtual bool IsISOLevel5ShiftUsedByCurrentInputMethod() const OVERRIDE;
88 virtual bool IsAltGrUsedByCurrentInputMethod() const OVERRIDE;
90 virtual ImeKeyboard* GetImeKeyboard() OVERRIDE;
91 virtual InputMethodUtil* GetInputMethodUtil() OVERRIDE;
92 virtual ComponentExtensionIMEManager*
93 GetComponentExtensionIMEManager() OVERRIDE;
94 virtual bool IsLoginKeyboard(const std::string& layout) const OVERRIDE;
96 virtual bool MigrateInputMethods(
97 std::vector<std::string>* input_method_ids) OVERRIDE;
99 // Sets |candidate_window_controller_|.
100 void SetCandidateWindowControllerForTesting(
101 CandidateWindowController* candidate_window_controller);
103 void SetImeKeyboardForTesting(ImeKeyboard* keyboard);
104 // Initialize |component_extension_manager_|.
105 void InitializeComponentExtensionForTesting(
106 scoped_ptr<ComponentExtensionIMEManagerDelegate> delegate);
109 // CandidateWindowController::Observer overrides:
110 virtual void CandidateClicked(int index) OVERRIDE;
111 virtual void CandidateWindowOpened() OVERRIDE;
112 virtual void CandidateWindowClosed() OVERRIDE;
114 // Temporarily deactivates all input methods (e.g. Chinese, Japanese, Arabic)
115 // since they are not necessary to input a login password. Users are still
116 // able to use/switch active keyboard layouts (e.g. US qwerty, US dvorak,
118 void OnScreenLocked();
120 // Resumes the original state by activating input methods and/or changing the
121 // current input method as needed.
122 void OnScreenUnlocked();
124 // Returns true if |input_method_id| is in |active_input_method_ids_|.
125 bool InputMethodIsActivated(const std::string& input_method_id);
127 // Returns true if the given input method config value is a string list
128 // that only contains an input method ID of a keyboard layout.
129 bool ContainsOnlyKeyboardLayout(const std::vector<std::string>& value);
131 // Creates and initializes |candidate_window_controller_| if it hasn't been
133 void MaybeInitializeCandidateWindowController();
135 // If |current_input_method_id_| is not in |input_method_ids|, switch to
136 // input_method_ids[0]. If the ID is equal to input_method_ids[N], switch to
137 // input_method_ids[N+1].
138 void SwitchToNextInputMethodInternal(
139 const std::vector<std::string>& input_method_ids,
140 const std::string& current_input_method_id);
142 // Change system input method.
143 // Returns true if the system input method is changed.
144 bool ChangeInputMethodInternal(const std::string& input_method_id,
147 // Gets whether the XKB extension is loaded successfully by checking the XKB
148 // input methods in input methods in |component_extension_ime_manager_|.
149 bool IsXkbComponentExtensionAvailable() const;
151 // Called when the ComponentExtensionIMEManagerDelegate is initialized.
152 void OnComponentExtensionInitialized(
153 scoped_ptr<ComponentExtensionIMEManagerDelegate> delegate);
154 void InitializeComponentExtension();
156 // Loads necessary component extensions.
157 // TODO(nona): Support dynamical unloading.
158 void LoadNecessaryComponentExtensions();
160 // Adds new input method to given list if possible
161 bool EnableInputMethodImpl(
162 const std::string& input_method_id,
163 std::vector<std::string>* new_active_input_method_ids) const;
165 // Starts or stops the system input method framework as needed.
166 // (after list of enabled input methods has been updated)
167 void ReconfigureIMFramework();
169 // Gets the current active user profile.
170 Profile* GetProfile() const;
172 scoped_ptr<InputMethodDelegate> delegate_;
174 // The current browser status.
177 // A list of objects that monitor the manager.
178 ObserverList<InputMethodManager::Observer> observers_;
179 ObserverList<CandidateWindowObserver> candidate_window_observers_;
181 // The input method which was/is selected.
182 InputMethodDescriptor previous_input_method_;
183 InputMethodDescriptor current_input_method_;
184 // The active input method ids cache.
185 std::vector<std::string> active_input_method_ids_;
187 // The list of enabled extension IMEs.
188 std::vector<std::string> enabled_extension_imes_;
190 // For screen locker. When the screen is locked, |previous_input_method_|,
191 // |current_input_method_|, and |active_input_method_ids_| above are copied
192 // to these "saved" variables.
193 InputMethodDescriptor saved_previous_input_method_;
194 InputMethodDescriptor saved_current_input_method_;
195 std::vector<std::string> saved_active_input_method_ids_;
197 // Extra input methods that have been explicitly added to the menu, such as
198 // those created by extension.
199 std::map<std::string, InputMethodDescriptor> extra_input_methods_;
201 // The candidate window. This will be deleted when the APP_TERMINATING
203 scoped_ptr<CandidateWindowController> candidate_window_controller_;
205 // The object which can create an InputMethodDescriptor object.
206 InputMethodWhitelist whitelist_;
208 // An object which provides miscellaneous input method utility functions. Note
209 // that |util_| is required to initialize |keyboard_|.
210 InputMethodUtil util_;
212 // An object which provides component extension ime management functions.
213 scoped_ptr<ComponentExtensionIMEManager> component_extension_ime_manager_;
215 // An object for switching XKB layouts and keyboard status like caps lock and
216 // auto-repeat interval.
217 scoped_ptr<ImeKeyboard> keyboard_;
219 std::string pending_input_method_;
221 base::ThreadChecker thread_checker_;
223 base::WeakPtrFactory<InputMethodManagerImpl> weak_ptr_factory_;
226 // { Profile : { input_method_id : Engine } }.
227 typedef std::map<std::string, InputMethodEngineInterface*>
229 typedef std::map<Profile*, EngineMap, ProfileCompare> ProfileEngineMap;
230 ProfileEngineMap profile_engine_map_;
232 DISALLOW_COPY_AND_ASSIGN(InputMethodManagerImpl);
235 } // namespace input_method
236 } // namespace chromeos
238 #endif // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_