chrome/browser/chromeos/input_method/input_method_persistence.h

   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.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PERSISTENCE_H_
   6 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PERSISTENCE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "ui/base/ime/chromeos/input_method_manager.h"
  13
  14 class PrefService;
  15
  16 namespace chromeos {
  17 namespace input_method {
  18
  19 // Observes input method and session state changes, and persists input method
  20 // changes to the BrowserProcess local state or to the user preferences,
  21 // according to the session state.
  22 class InputMethodPersistence : public InputMethodManager::Observer {
  23  public:
  24   // Constructs an instance that will observe input method changes on the
  25   // provided InputMethodManager. The client is responsible for calling
  26   // OnSessionStateChange whenever the InputMethodManager::UISessionState
  27   // changes.
  28   explicit InputMethodPersistence(InputMethodManager* input_method_manager);
  29   ~InputMethodPersistence() override;
  30
  31   // Receives notification of session state changes.
  32   void OnSessionStateChange(InputMethodManager::UISessionState new_session);
  33
  34   // InputMethodManager::Observer overrides.
  35   void InputMethodChanged(InputMethodManager* manager,
  36                           bool show_message) override;
  37
  38  private:
  39   InputMethodManager* input_method_manager_;
  40   InputMethodManager::UISessionState ui_session_;
  41   DISALLOW_COPY_AND_ASSIGN(InputMethodPersistence);
  42 };
  43
  44 void SetUserLRUInputMethodPreferenceForTesting(const std::string& username,
  45                                                const std::string& input_method,
  46                                                PrefService* local_state);
  47
  48 }  // namespace input_method
  49 }  // namespace chromeos
  50
  51 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PERSISTENCE_H_