Revert of Moves code from chromeos/ime to ui/base/ime/chromeos.

ui/base/ime/chromeos/input_method_manager.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef UI_BASE_IME_CHROMEOS_INPUT_METHOD_MANAGER_H_
-#define UI_BASE_IME_CHROMEOS_INPUT_METHOD_MANAGER_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "ui/base/ime/chromeos/input_method_descriptor.h"
-#include "ui/base/ui_base_export.h"
-
-class Profile;
-
-namespace ui {
-class Accelerator;
-}  // namespace ui
-
-namespace user_manager {
-class User;
-}  // namespace user_manager
-
-namespace chromeos {
-class ComponentExtensionIMEManager;
-class InputMethodEngineInterface;
-namespace input_method {
-class InputMethodUtil;
-class ImeKeyboard;
-
-// This class manages input methodshandles.  Classes can add themselves as
-// observers. Clients can get an instance of this library class by:
-// InputMethodManager::Get().
-class UI_BASE_EXPORT InputMethodManager {
- public:
-  enum UISessionState {
-    STATE_LOGIN_SCREEN = 0,
-    STATE_BROWSER_SCREEN,
-    STATE_LOCK_SCREEN,
-    STATE_TERMINATING,
-  };
-
-  class Observer {
-   public:
-    virtual ~Observer() {}
-    // Called when the current input method is changed.  |show_message|
-    // indicates whether the user should be notified of this change.
-    virtual void InputMethodChanged(InputMethodManager* manager,
-                                    bool show_message) = 0;
-  };
-
-  // CandidateWindowObserver is notified of events related to the candidate
-  // window.  The "suggestion window" used by IMEs such as ibus-mozc does not
-  // count as the candidate window (this may change if we later want suggestion
-  // window events as well).  These events also won't occur when the virtual
-  // keyboard is used, since it controls its own candidate window.
-  class CandidateWindowObserver {
-   public:
-    virtual ~CandidateWindowObserver() {}
-    // Called when the candidate window is opened.
-    virtual void CandidateWindowOpened(InputMethodManager* manager) = 0;
-    // Called when the candidate window is closed.
-    virtual void CandidateWindowClosed(InputMethodManager* manager) = 0;
-  };
-
-  class State : public base::RefCounted<InputMethodManager::State> {
-   public:
-    // Returns a copy of state.
-    virtual scoped_refptr<State> Clone() const = 0;
-
-    // Adds an input method extension. This function does not takes ownership of
-    // |instance|.
-    virtual void AddInputMethodExtension(
-        const std::string& extension_id,
-        const InputMethodDescriptors& descriptors,
-        InputMethodEngineInterface* instance) = 0;
-
-    // Removes an input method extension.
-    virtual void RemoveInputMethodExtension(
-        const std::string& extension_id) = 0;
-
-    // Changes the current input method to |input_method_id|. If
-    // |input_method_id|
-    // is not active, switch to the first one in the active input method list.
-    virtual void ChangeInputMethod(const std::string& input_method_id,
-                                   bool show_message) = 0;
-
-    // Adds one entry to the list of active input method IDs, and then starts or
-    // stops the system input method framework as needed.
-    virtual bool EnableInputMethod(
-        const std::string& new_active_input_method_id) = 0;
-
-    // Enables "login" keyboard layouts (e.g. US Qwerty, US Dvorak, French
-    // Azerty) that are necessary for the |language_code| and then switches to
-    // |initial_layouts| if the given list is not empty. For example, if
-    // |language_code| is "en-US", US Qwerty, US International, US Extended, US
-    // Dvorak, and US Colemak layouts would be enabled. Likewise, for Germany
-    // locale, US Qwerty which corresponds to the hardware keyboard layout and
-    // several keyboard layouts for Germany would be enabled.
-    // Only layouts suitable for login screen are enabled.
-    virtual void EnableLoginLayouts(
-        const std::string& language_code,
-        const std::vector<std::string>& initial_layouts) = 0;
-
-    // Filters current state layouts and leaves only suitable for lock screen.
-    virtual void EnableLockScreenLayouts() = 0;
-
-    // Returns a list of descriptors for all Input Method Extensions.
-    virtual void GetInputMethodExtensions(InputMethodDescriptors* result) = 0;
-
-    // Returns the list of input methods we can select (i.e. active) including
-    // extension input methods.
-    virtual scoped_ptr<InputMethodDescriptors> GetActiveInputMethods()
-        const = 0;
-
-    // Returns the list of input methods we can select (i.e. active) including
-    // extension input methods.
-    // The same as GetActiveInputMethods but returns reference to internal list.
-    virtual const std::vector<std::string>& GetActiveInputMethodIds() const = 0;
-
-    // Returns the number of active input methods including extension input
-    // methods.
-    virtual size_t GetNumActiveInputMethods() const = 0;
-
-    // Returns the input method descriptor from the given input method id
-    // string.
-    // If the given input method id is invalid, returns NULL.
-    virtual const InputMethodDescriptor* GetInputMethodFromId(
-        const std::string& input_method_id) const = 0;
-
-    // Sets the list of extension IME ids which should be enabled.
-    virtual void SetEnabledExtensionImes(std::vector<std::string>* ids) = 0;
-
-    // Sets current input method to login default (first owners, then hardware).
-    virtual void SetInputMethodLoginDefault() = 0;
-
-    // Sets current input method to login default with the given locale and
-    // layout info from VPD.
-    virtual void SetInputMethodLoginDefaultFromVPD(
-        const std::string& locale,
-        const std::string& layout) = 0;
-
-    // Switches the current input method (or keyboard layout) to the next one.
-    virtual bool SwitchToNextInputMethod() = 0;
-
-    // Switches the current input method (or keyboard layout) to the previous
-    // one.
-    virtual bool SwitchToPreviousInputMethod(
-        const ui::Accelerator& accelerator) = 0;
-
-    // Switches to an input method (or keyboard layout) which is associated with
-    // the |accelerator|.
-    virtual bool SwitchInputMethod(const ui::Accelerator& accelerator) = 0;
-
-    // Gets the descriptor of the input method which is currently selected.
-    virtual InputMethodDescriptor GetCurrentInputMethod() const = 0;
-
-    // Updates the list of active input method IDs, and then starts or stops the
-    // system input method framework as needed.
-    virtual bool ReplaceEnabledInputMethods(
-        const std::vector<std::string>& new_active_input_method_ids) = 0;
-
-   protected:
-    friend base::RefCounted<InputMethodManager::State>;
-
-    virtual ~State();
-  };
-
-  virtual ~InputMethodManager() {}
-
-  // Gets the global instance of InputMethodManager. Initialize() must be called
-  // first.
-  static UI_BASE_EXPORT InputMethodManager* Get();
-
-  // Sets the global instance. |instance| will be owned by the internal pointer
-  // and deleted by Shutdown().
-  // TODO(nona): Instanciate InputMethodManagerImpl inside of this function once
-  //             crbug.com/164375 is fixed.
-  static UI_BASE_EXPORT void Initialize(InputMethodManager* instance);
-
-  // Destroy the global instance.
-  static UI_BASE_EXPORT void Shutdown();
-
-  // Get the current UI session state (e.g. login screen, lock screen, etc.).
-  virtual UISessionState GetUISessionState() = 0;
-
-  // Adds an observer to receive notifications of input method related
-  // changes as desribed in the Observer class above.
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void AddCandidateWindowObserver(
-      CandidateWindowObserver* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
-  virtual void RemoveCandidateWindowObserver(
-      CandidateWindowObserver* observer) = 0;
-
-  // Returns all input methods that are supported, including ones not active.
-  // This function never returns NULL. Note that input method extensions are NOT
-  // included in the result.
-  virtual scoped_ptr<InputMethodDescriptors>
-      GetSupportedInputMethods() const = 0;
-
-  // Activates the input method property specified by the |key|.
-  virtual void ActivateInputMethodMenuItem(const std::string& key) = 0;
-
-  virtual bool IsISOLevel5ShiftUsedByCurrentInputMethod() const = 0;
-
-  virtual bool IsAltGrUsedByCurrentInputMethod() const = 0;
-
-  // Returns an X keyboard object which could be used to change the current XKB
-  // layout, change the caps lock status, and set the auto repeat rate/interval.
-  virtual ImeKeyboard* GetImeKeyboard() = 0;
-
-  // Returns an InputMethodUtil object.
-  virtual InputMethodUtil* GetInputMethodUtil() = 0;
-
-  // Returns a ComponentExtentionIMEManager object.
-  virtual ComponentExtensionIMEManager* GetComponentExtensionIMEManager() = 0;
-
-  // If keyboard layout can be uset at login screen
-  virtual bool IsLoginKeyboard(const std::string& layout) const = 0;
-
-  // Migrates the input method id to extension-based input method id.
-  virtual bool MigrateInputMethods(
-      std::vector<std::string>* input_method_ids) = 0;
-
-  // Returns new empty state for the |profile|.
-  virtual scoped_refptr<State> CreateNewState(Profile* profile) = 0;
-
-  // Returns active state.
-  virtual scoped_refptr<InputMethodManager::State> GetActiveIMEState() = 0;
-
-  // Replaces active state.
-  virtual void SetState(scoped_refptr<State> state) = 0;
-};
-
-}  // namespace input_method
-}  // namespace chromeos
-
-#endif  // UI_BASE_IME_CHROMEOS_INPUT_METHOD_MANAGER_H_