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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 #include "ui/base/ime/remote_input_method_win.h" | |
6 | |
7 #include "base/strings/utf_string_conversions.h" | |
8 #include "ui/base/ime/input_method.h" | |
9 #include "ui/base/ime/input_method_delegate.h" | |
10 #include "ui/base/ime/remote_input_method_delegate_win.h" | |
11 #include "ui/base/ime/text_input_client.h" | |
12 #include "ui/base/ime/win/tsf_input_scope.h" | |
13 #include "ui/events/event.h" | |
14 #include "ui/events/event_utils.h" | |
15 #include "ui/gfx/rect.h" | |
16 | |
17 namespace ui { | |
18 namespace { | |
19 | |
20 const LANGID kFallbackLangID = | |
21 MAKELANGID(LANG_NEUTRAL, SUBLANG_UI_CUSTOM_DEFAULT); | |
22 | |
23 // Caveats: Currently we support only one instance at the same time. | |
Seigo Nonaka
2013/11/18 20:00:27
Could you describe why should we support multiple
yukawa
2013/11/19 07:17:51
I don't think we need to support multiple instance
| |
24 class InstanceMapper { | |
Seigo Nonaka
2013/11/18 20:00:27
Does this class is necessary?
Seems there is only
yukawa
2013/11/19 07:17:51
Done.
| |
25 public: | |
26 static void RegisterInstance(InputMethod* public_interface, | |
27 RemoteInputMethodPrivateWin* private_interface) { | |
28 CHECK(public_interface_ == NULL) | |
29 << "Currently only one instance is supported at the same time"; | |
30 CHECK(private_interface_ == NULL) | |
31 << "Currently only one instance is supported at the same time"; | |
32 public_interface_ = public_interface; | |
33 private_interface_ = private_interface; | |
34 } | |
35 | |
36 static void UnregisterInstance(InputMethod* public_interface) { | |
37 RemoteInputMethodPrivateWin* private_interface = | |
38 GetPrivate(public_interface); | |
39 if (public_interface_ == public_interface && | |
40 private_interface_ == private_interface) { | |
41 public_interface_ = NULL; | |
42 private_interface_ = NULL; | |
43 } | |
44 } | |
45 | |
46 static RemoteInputMethodPrivateWin* GetPrivate( | |
47 InputMethod* public_interface) { | |
48 if (public_interface_ != public_interface) | |
49 return NULL; | |
50 return private_interface_; | |
51 } | |
52 | |
53 private: | |
54 static InputMethod* public_interface_; | |
55 static RemoteInputMethodPrivateWin* private_interface_; | |
56 | |
57 DISALLOW_IMPLICIT_CONSTRUCTORS(InstanceMapper); | |
58 }; | |
59 InputMethod* InstanceMapper::public_interface_ = NULL; | |
60 RemoteInputMethodPrivateWin* InstanceMapper::private_interface_ = NULL; | |
61 | |
62 std::string GetLocaleString(LCID Locale_id, LCTYPE locale_type) { | |
63 wchar_t buffer[16] = {}; | |
64 | |
65 //|chars_written| includes NUL terminator. | |
66 int chars_written = | |
67 GetLocaleInfo(Locale_id, locale_type, buffer, arraysize(buffer)); | |
68 if (chars_written <= 1 || arraysize(buffer) < chars_written) | |
69 return std::string(); | |
70 std::string result; | |
71 WideToUTF8(buffer, chars_written - 1, &result); | |
72 return result; | |
73 } | |
74 | |
75 std::vector<int32> GetInputScopesAsInt(TextInputType text_input_type, | |
76 TextInputMode text_input_mode) { | |
77 std::vector<int32> result; | |
78 // An empty vector represents |text_input_type| is TEXT_INPUT_TYPE_NONE. | |
79 if (text_input_type == TEXT_INPUT_TYPE_NONE) | |
80 return result; | |
81 | |
82 const std::vector<InputScope>& input_scopes = | |
83 tsf_inputscope::GetInputScopes(text_input_type, text_input_mode); | |
84 result.reserve(input_scopes.size()); | |
85 for (size_t i = 0; i < input_scopes.size(); ++i) | |
86 result.push_back(static_cast<int32>(input_scopes[i])); | |
87 return result; | |
88 } | |
89 | |
90 std::vector<gfx::Rect> GetCompositionCharacterBounds( | |
91 const TextInputClient* client) { | |
92 if (!client) | |
93 return std::vector<gfx::Rect>(); | |
94 | |
95 if (!client->HasCompositionText()) { | |
96 std::vector<gfx::Rect> caret; | |
97 caret.push_back(client->GetCaretBounds()); | |
98 return caret; | |
99 } | |
100 | |
101 std::vector<gfx::Rect> bounds; | |
102 for (uint32 i = 0;; ++i) { | |
103 gfx::Rect rect; | |
104 if (!client->GetCompositionCharacterBounds(i, &rect)) | |
105 break; | |
106 bounds.push_back(rect); | |
107 } | |
108 return bounds; | |
109 } | |
110 | |
111 class RemoteInputMethodWin : public InputMethod, | |
112 public RemoteInputMethodPrivateWin { | |
113 public: | |
114 explicit RemoteInputMethodWin(internal::InputMethodDelegate* delegate) | |
115 : delegate_(delegate), | |
116 remote_delegate_(NULL), | |
117 text_input_client_(NULL), | |
118 is_candidate_popup_open_(false), | |
119 is_ime_(false), | |
120 langid_(kFallbackLangID) { | |
121 InstanceMapper::RegisterInstance(this, this); | |
122 } | |
Seigo Nonaka
2013/11/18 20:00:27
plz add one line break between functions.
yukawa
2013/11/19 07:17:51
Done.
| |
123 virtual ~RemoteInputMethodWin() { | |
124 InstanceMapper::UnregisterInstance(this); | |
125 } | |
126 | |
127 private: | |
128 // Overridden from InputMethod: | |
129 virtual void SetDelegate(internal::InputMethodDelegate* delegate) OVERRIDE { | |
130 delegate_ = delegate; | |
131 } | |
132 virtual void Init(bool focused) OVERRIDE {} | |
133 virtual void OnFocus() OVERRIDE {} | |
134 virtual void OnBlur() OVERRIDE {} | |
135 virtual bool OnUntranslatedIMEMessage(const base::NativeEvent& event, | |
136 NativeEventResult* result) OVERRIDE { | |
137 return false; | |
138 } | |
139 virtual void SetFocusedTextInputClient(TextInputClient* client) OVERRIDE { | |
140 | |
141 std::vector<int32> prev_input_scopes; | |
142 std::swap(input_scopes_, prev_input_scopes); | |
143 std::vector<gfx::Rect> prev_bounds; | |
144 std::swap(composition_character_bounds_, prev_bounds); | |
145 if (client) { | |
146 input_scopes_ = GetInputScopesAsInt(client->GetTextInputType(), | |
147 client->GetTextInputMode()); | |
148 composition_character_bounds_ = GetCompositionCharacterBounds(client); | |
149 } | |
150 | |
151 text_input_client_ = client; | |
152 | |
153 if (!remote_delegate_ || (prev_input_scopes == input_scopes_ && | |
154 prev_bounds == composition_character_bounds_)) | |
155 return; | |
156 remote_delegate_->OnTextInputClientUpdated( | |
157 input_scopes_, composition_character_bounds_); | |
158 } | |
159 virtual void DetachTextInputClient(TextInputClient* client) OVERRIDE { | |
160 if (text_input_client_ == client) { | |
Seigo Nonaka
2013/11/18 20:00:27
nit: I prefer early exit style but up to you.
yukawa
2013/11/19 07:17:51
Done. And simplified.
| |
161 if (!input_scopes_.empty() || !composition_character_bounds_.empty()) { | |
162 input_scopes_.empty(); | |
163 composition_character_bounds_.empty(); | |
164 if (remote_delegate_) { | |
165 remote_delegate_->OnTextInputClientUpdated( | |
166 input_scopes_, composition_character_bounds_); | |
167 } | |
168 } | |
169 text_input_client_ = NULL; | |
170 } | |
171 } | |
172 virtual TextInputClient* GetTextInputClient() const OVERRIDE { | |
173 return text_input_client_; | |
174 } | |
175 virtual bool DispatchKeyEvent(const ui::KeyEvent& event) OVERRIDE { | |
176 if (event.HasNativeEvent()) | |
Seigo Nonaka
2013/11/18 20:00:27
DCHECK?
yukawa
2013/11/19 07:17:51
Um, I changed my mind and added WM_CHAR handler be
Seigo Nonaka
2013/11/20 04:14:29
Let me confirm again, will RemoteInputMethodWin di
yukawa
2013/11/20 05:06:07
Do you mean we should do as follows?
if (event.Ha
Seigo Nonaka
2013/11/20 05:40:41
Okay, as we talked offline, it seems good to imple
| |
177 return false; | |
178 | |
179 if (event.is_char() && text_input_client_) { | |
180 GetTextInputClient()->InsertChar(event.key_code(), | |
181 ui::GetModifiersFromKeyState()); | |
182 return true; | |
183 } | |
184 if (!delegate_) | |
185 return false; | |
186 return delegate_->DispatchFabricatedKeyEventPostIME(event.type(), | |
187 event.key_code(), | |
188 event.flags()); | |
189 } | |
190 virtual void OnTextInputTypeChanged(const TextInputClient* client) OVERRIDE { | |
191 if (!text_input_client_ || text_input_client_ != client) | |
192 return; | |
193 std::vector<int32> prev_input_scopes; | |
194 std::swap(input_scopes_, prev_input_scopes); | |
195 input_scopes_ = GetInputScopesAsInt(client->GetTextInputType(), | |
196 client->GetTextInputMode()); | |
197 if (input_scopes_ != prev_input_scopes && remote_delegate_) { | |
198 remote_delegate_->OnTextInputClientUpdated( | |
199 input_scopes_, composition_character_bounds_); | |
200 } | |
201 } | |
202 virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE { | |
203 if (!text_input_client_ || text_input_client_ != client) | |
204 return; | |
205 std::vector<gfx::Rect> prev_rects; | |
206 std::swap(composition_character_bounds_, prev_rects); | |
207 composition_character_bounds_ = GetCompositionCharacterBounds(client); | |
208 if (composition_character_bounds_ != prev_rects && remote_delegate_) { | |
209 remote_delegate_->OnTextInputClientUpdated( | |
210 input_scopes_, composition_character_bounds_); | |
211 } | |
212 } | |
213 virtual void CancelComposition(const TextInputClient* client) OVERRIDE { | |
214 if (CanSendRemoteNotification(client)) | |
215 remote_delegate_->CancelComposition(); | |
216 } | |
217 virtual void OnInputLocaleChanged() OVERRIDE { | |
218 // not supported. | |
219 } | |
220 virtual std::string GetInputLocale() OVERRIDE { | |
221 const LCID locale_id = MAKELCID(langid_, SORT_DEFAULT); | |
222 std::string language = | |
223 GetLocaleString(locale_id, LOCALE_SISO639LANGNAME); | |
224 if (SUBLANGID(langid_) == SUBLANG_NEUTRAL || language.empty()) | |
225 return language; | |
226 const std::string& region = | |
227 GetLocaleString(locale_id, LOCALE_SISO3166CTRYNAME); | |
228 if (region.empty()) | |
229 return language; | |
230 return language.append(1, '-').append(region); | |
231 } | |
232 virtual base::i18n::TextDirection GetInputTextDirection() OVERRIDE { | |
233 switch (PRIMARYLANGID(langid_)) { | |
234 case LANG_ARABIC: | |
235 case LANG_HEBREW: | |
236 case LANG_PERSIAN: | |
237 case LANG_SYRIAC: | |
238 case LANG_UIGHUR: | |
239 case LANG_URDU: | |
240 return base::i18n::RIGHT_TO_LEFT; | |
241 default: | |
242 return base::i18n::LEFT_TO_RIGHT; | |
243 } | |
244 } | |
245 virtual bool IsActive() OVERRIDE { | |
246 return true; // always turned on | |
247 } | |
248 virtual TextInputType GetTextInputType() const OVERRIDE { | |
249 return text_input_client_ ? text_input_client_->GetTextInputType() | |
250 : TEXT_INPUT_TYPE_NONE; | |
251 } | |
252 virtual TextInputMode GetTextInputMode() const OVERRIDE { | |
253 return text_input_client_ ? text_input_client_->GetTextInputMode() | |
254 : TEXT_INPUT_MODE_DEFAULT; | |
255 } | |
256 virtual bool CanComposeInline() const OVERRIDE { | |
257 return text_input_client_ ? text_input_client_->CanComposeInline() : true; | |
258 } | |
259 virtual bool IsCandidatePopupOpen() const OVERRIDE { | |
260 return is_candidate_popup_open_; | |
261 } | |
262 virtual void AddObserver(InputMethodObserver* observer) OVERRIDE { | |
263 // not supported. | |
Seigo Nonaka
2013/11/18 20:00:27
If you will support this, please file a bug and le
yukawa
2013/11/19 07:17:51
I don't want to support this. IMHO, I'd like to d
| |
264 } | |
265 virtual void RemoveObserver(InputMethodObserver* observer) OVERRIDE { | |
266 // not supported. | |
267 } | |
268 | |
269 // Overridden from RemoteInputMethodPrivateWin: | |
270 virtual void SetRemoteDelegate( | |
271 internal::RemoteInputMethodDelegateWin* delegate) OVERRIDE{ | |
272 remote_delegate_ = delegate; | |
273 | |
274 // Sync initial state. | |
275 if (remote_delegate_) { | |
276 remote_delegate_->OnTextInputClientUpdated( | |
277 input_scopes_, composition_character_bounds_); | |
278 } | |
279 } | |
280 virtual void OnCandidatePopupChanged(bool visible) OVERRIDE { | |
281 is_candidate_popup_open_ = visible; | |
282 } | |
283 virtual void OnLanguageChanged(LANGID langid, bool /*is_ime*/) OVERRIDE { | |
284 // Note: Currently |is_ime| is not utilized yet. | |
285 const bool changed = (langid_ != langid); | |
286 langid_ = langid; | |
287 if (changed && GetTextInputClient()) | |
288 GetTextInputClient()->OnInputMethodChanged(); | |
289 } | |
290 | |
291 bool CanSendRemoteNotification( | |
292 const TextInputClient* text_input_client) const { | |
293 return text_input_client_ && | |
294 text_input_client_ == text_input_client && | |
295 remote_delegate_; | |
296 } | |
297 | |
298 internal::InputMethodDelegate* delegate_; | |
299 internal::RemoteInputMethodDelegateWin* remote_delegate_; | |
300 | |
301 TextInputClient* text_input_client_; | |
302 std::vector<int32> input_scopes_; | |
303 std::vector<gfx::Rect> composition_character_bounds_; | |
304 bool is_candidate_popup_open_; | |
305 bool is_ime_; | |
306 LANGID langid_; | |
307 | |
308 DISALLOW_COPY_AND_ASSIGN(RemoteInputMethodWin); | |
309 }; | |
310 | |
311 } // namespace | |
312 | |
313 RemoteInputMethodPrivateWin::RemoteInputMethodPrivateWin() {} | |
314 | |
315 // static | |
316 scoped_ptr<InputMethod> CreateRemoteInputMethodWin( | |
317 internal::InputMethodDelegate* delegate) { | |
318 return scoped_ptr<InputMethod>(new RemoteInputMethodWin(delegate)); | |
319 } | |
320 | |
321 // static | |
322 RemoteInputMethodPrivateWin* RemoteInputMethodPrivateWin::Get( | |
323 InputMethod* input_method) { | |
324 return InstanceMapper::GetPrivate(input_method); | |
325 } | |
326 | |
327 } // namespace ui | |
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