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1 // Copyright (c) 2011 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 VIEWS_IME_INPUT_METHOD_WIN_H_ | |
6 #define VIEWS_IME_INPUT_METHOD_WIN_H_ | |
7 #pragma once | |
8 | |
9 #include <windows.h> | |
10 | |
11 #include <string> | |
12 | |
13 #include "base/basictypes.h" | |
14 #include "base/compiler_specific.h" | |
15 #include "ui/base/win/ime_input.h" | |
16 #include "views/ime/input_method_base.h" | |
17 #include "views/view.h" | |
18 #include "views/widget/widget.h" | |
19 | |
20 namespace views { | |
21 | |
22 // An InputMethod implementation based on Windows IMM32 API. | |
23 class InputMethodWin : public InputMethodBase { | |
24 public: | |
25 explicit InputMethodWin(internal::InputMethodDelegate* delegate); | |
26 virtual ~InputMethodWin(); | |
27 | |
28 // Overridden from InputMethod: | |
29 virtual void Init(Widget* widget) OVERRIDE; | |
30 virtual void OnFocus() OVERRIDE; | |
31 virtual void OnBlur() OVERRIDE; | |
32 virtual void DispatchKeyEvent(const KeyEvent& key) OVERRIDE; | |
33 virtual void OnTextInputTypeChanged(View* view) OVERRIDE; | |
34 virtual void OnCaretBoundsChanged(View* view) OVERRIDE; | |
35 virtual void CancelComposition(View* view) OVERRIDE; | |
36 virtual std::string GetInputLocale() OVERRIDE; | |
37 virtual base::i18n::TextDirection GetInputTextDirection() OVERRIDE; | |
38 virtual bool IsActive() OVERRIDE; | |
39 | |
40 // Handles IME messages. | |
41 LRESULT OnImeMessages(UINT message, WPARAM wparam, LPARAM lparam, | |
42 BOOL* handled); | |
43 | |
44 // Message handlers. The native widget is responsible for forwarding following | |
45 // messages to the input method. | |
46 void OnInputLangChange(DWORD character_set, HKL input_language_id); | |
47 | |
48 private: | |
49 LRESULT OnImeSetContext( | |
50 UINT message, WPARAM wparam, LPARAM lparam, BOOL* handled); | |
51 LRESULT OnImeStartComposition( | |
52 UINT message, WPARAM wparam, LPARAM lparam, BOOL* handled); | |
53 LRESULT OnImeComposition( | |
54 UINT message, WPARAM wparam, LPARAM lparam, BOOL* handled); | |
55 LRESULT OnImeEndComposition( | |
56 UINT message, WPARAM wparam, LPARAM lparam, BOOL* handled); | |
57 LRESULT OnImeRequest( | |
58 UINT message, WPARAM wparam, LPARAM lparam, BOOL* handled); | |
59 // For both WM_CHAR and WM_SYSCHAR | |
60 LRESULT OnChar( | |
61 UINT message, WPARAM wparam, LPARAM lparam, BOOL* handled); | |
62 // For both WM_DEADCHAR and WM_SYSDEADCHAR | |
63 LRESULT OnDeadChar( | |
64 UINT message, WPARAM wparam, LPARAM lparam, BOOL* handled); | |
65 | |
66 LRESULT OnDocumentFeed(RECONVERTSTRING *reconv); | |
67 LRESULT OnReconvertString(RECONVERTSTRING *reconv); | |
68 | |
69 // Overridden from InputMethodBase. | |
70 virtual void OnWillChangeFocus(View* focused_before, View* focused) OVERRIDE; | |
71 virtual void OnDidChangeFocus(View* focused_before, View* focused) OVERRIDE; | |
72 | |
73 // A helper function to return the Widget's native window. | |
74 HWND hwnd() const { return widget()->GetNativeView(); } | |
75 | |
76 // Asks the client to confirm current composition text. | |
77 void ConfirmCompositionText(); | |
78 | |
79 // Enables or disables the IME according to the current text input type. | |
80 void UpdateIMEState(); | |
81 | |
82 // Indicates if the current input locale has an IME. | |
83 bool active_; | |
84 | |
85 // Name of the current input locale. | |
86 std::string locale_; | |
87 | |
88 // The current input text direction. | |
89 base::i18n::TextDirection direction_; | |
90 | |
91 // The new text direction and layout alignment requested by the user by | |
92 // pressing ctrl-shift. It'll be sent to the text input client when the key | |
93 // is released. | |
94 base::i18n::TextDirection pending_requested_direction_; | |
95 | |
96 // Windows IMM32 wrapper. | |
97 // (See "ui/base/win/ime_input.h" for its details.) | |
98 ui::ImeInput ime_input_; | |
99 | |
100 DISALLOW_COPY_AND_ASSIGN(InputMethodWin); | |
101 }; | |
102 | |
103 } // namespace views | |
104 | |
105 #endif // VIEWS_IME_INPUT_METHOD_WIN_H_ | |
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