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 "chromeos/ime/input_method_manager.h"
  13
  14 namespace chromeos {
  15 namespace input_method {
  16
  17 // Observes input method and session state changes, and persists input method
  18 // changes to the BrowserProcess local state or to the user preferences,
  19 // according to the session state.
  20 class InputMethodPersistence : public InputMethodManager::Observer {
  21  public:
  22   // Constructs an instance that will observe input method changes on the
  23   // provided InputMethodManager. The client is responsible for calling
  24   // OnSessionStateChange whenever the InputMethodManager::State changes.
  25   explicit InputMethodPersistence(InputMethodManager* input_method_manager);
  26   virtual ~InputMethodPersistence();
  27
  28   // Receives notification of session state changes.
  29   void OnSessionStateChange(InputMethodManager::State new_state);
  30
  31   // InputMethodManager::Observer overrides.
  32   virtual void InputMethodChanged(InputMethodManager* manager,
  33                                   bool show_message) OVERRIDE;
  34   virtual void InputMethodPropertyChanged(InputMethodManager* manager) OVERRIDE;
  35
  36  private:
  37   InputMethodManager* input_method_manager_;
  38   InputMethodManager::State state_;
  39   DISALLOW_COPY_AND_ASSIGN(InputMethodPersistence);
  40 };
  41
  42 }  // namespace input_method
  43 }  // namespace chromeos
  44
  45 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PERSISTENCE_H_