input_method_persistence.h revision c2e0dbddbe15c98d52c4786dac06cb8952a8ae6d 
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
14namespace chromeos {
15namespace 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.
20class 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_
46