input_method_observer.h revision c2e0dbddbe15c98d52c4786dac06cb8952a8ae6d 
1// Copyright (c) 2013 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 UI_BASE_IME_INPUT_METHOD_OBSERVER_H_
6#define UI_BASE_IME_INPUT_METHOD_OBSERVER_H_
7
8#include "ui/base/ui_export.h"
9
10namespace ui {
11
12class InputMethod;
13class TextInputClient;
14
15class UI_EXPORT InputMethodObserver {
16 public:
17  virtual ~InputMethodObserver() {}
18
19  // Called when either:
20  //  - the TextInputClient is changed (e.g. by a change of focus)
21  //  - the TextInputType of the TextInputClient changes
22  virtual void OnTextInputStateChanged(const TextInputClient* client) = 0;
23
24  // Called when the observed InputMethod is being destroyed.
25  virtual void OnInputMethodDestroyed(const InputMethod* input_method) = 0;
26};
27
28}  // namespace ui
29
30#endif  // UI_BASE_IME_INPUT_METHOD_OBSERVER_H_
31