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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_IMM32_H_ | |
6 #define UI_BASE_IME_INPUT_METHOD_IMM32_H_ | |
7 | |
8 #include <windows.h> | |
9 | |
10 #include <string> | |
11 | |
12 #include "base/basictypes.h" | |
13 #include "base/compiler_specific.h" | |
14 #include "ui/base/ime/input_method_win.h" | |
15 | |
16 namespace ui { | |
17 | |
18 // An InputMethod implementation based on Windows IMM32 API. | |
19 class UI_BASE_EXPORT InputMethodIMM32 : public InputMethodWin { | |
20 public: | |
21 InputMethodIMM32(internal::InputMethodDelegate* delegate, | |
22 HWND toplevel_window_handle); | |
23 | |
24 // Overridden from InputMethod: | |
25 virtual void OnFocus() OVERRIDE; | |
26 virtual void OnBlur() OVERRIDE; | |
27 virtual bool OnUntranslatedIMEMessage(const base::NativeEvent& event, | |
28 NativeEventResult* result) OVERRIDE; | |
29 virtual void OnTextInputTypeChanged(const TextInputClient* client) OVERRIDE; | |
30 virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE; | |
31 virtual void CancelComposition(const TextInputClient* client) OVERRIDE; | |
32 virtual bool IsCandidatePopupOpen() const OVERRIDE; | |
33 | |
34 protected: | |
35 // Overridden from InputMethodBase: | |
36 virtual void OnWillChangeFocusedClient(TextInputClient* focused_before, | |
37 TextInputClient* focused) OVERRIDE; | |
38 virtual void OnDidChangeFocusedClient(TextInputClient* focused_before, | |
39 TextInputClient* focused) OVERRIDE; | |
40 | |
41 private: | |
42 LRESULT OnImeSetContext(HWND window_handle, | |
43 UINT message, | |
44 WPARAM wparam, | |
45 LPARAM lparam, | |
46 BOOL* handled); | |
47 LRESULT OnImeStartComposition(HWND window_handle, | |
48 UINT message, | |
49 WPARAM wparam, | |
50 LPARAM lparam, | |
51 BOOL* handled); | |
52 LRESULT OnImeComposition(HWND window_handle, | |
53 UINT message, | |
54 WPARAM wparam, | |
55 LPARAM lparam, | |
56 BOOL* handled); | |
57 LRESULT OnImeEndComposition(HWND window_handle, | |
58 UINT message, | |
59 WPARAM wparam, | |
60 LPARAM lparam, | |
61 BOOL* handled); | |
62 LRESULT OnImeNotify(UINT message, | |
63 WPARAM wparam, | |
64 LPARAM lparam, | |
65 BOOL* handled); | |
66 | |
67 // Asks the client to confirm current composition text. | |
68 void ConfirmCompositionText(); | |
69 | |
70 // Enables or disables the IME according to the current text input type. | |
71 void UpdateIMEState(); | |
72 | |
73 bool enabled_; | |
74 | |
75 // True if we know for sure that a candidate window is open. | |
76 bool is_candidate_popup_open_; | |
77 | |
78 // Window handle where composition is on-going. NULL when there is no | |
79 // composition. | |
80 HWND composing_window_handle_; | |
81 | |
82 DISALLOW_COPY_AND_ASSIGN(InputMethodIMM32); | |
83 }; | |
84 | |
85 } // namespace ui | |
86 | |
87 #endif // UI_BASE_IME_INPUT_METHOD_IMM32_H_ | |
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