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fl_text_input_handler.cc
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1 // Copyright 2013 The Flutter 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 "flutter/shell/platform/linux/fl_text_input_handler.h"
6
7 #include <gtk/gtk.h>
8
9 #include "flutter/shell/platform/common/text_editing_delta.h"
10 #include "flutter/shell/platform/common/text_input_model.h"
11 #include "flutter/shell/platform/linux/public/flutter_linux/fl_json_method_codec.h"
12 #include "flutter/shell/platform/linux/public/flutter_linux/fl_method_channel.h"
13
14 static constexpr char kChannelName[] = "flutter/textinput";
15
16 static constexpr char kBadArgumentsError[] = "Bad Arguments";
17
18 static constexpr char kSetClientMethod[] = "TextInput.setClient";
19 static constexpr char kShowMethod[] = "TextInput.show";
20 static constexpr char kSetEditingStateMethod[] = "TextInput.setEditingState";
21 static constexpr char kClearClientMethod[] = "TextInput.clearClient";
22 static constexpr char kHideMethod[] = "TextInput.hide";
23 static constexpr char kUpdateEditingStateMethod[] =
24 "TextInputClient.updateEditingState";
25 static constexpr char kUpdateEditingStateWithDeltasMethod[] =
26 "TextInputClient.updateEditingStateWithDeltas";
27 static constexpr char kPerformActionMethod[] = "TextInputClient.performAction";
28 static constexpr char kSetEditableSizeAndTransform[] =
29 "TextInput.setEditableSizeAndTransform";
30 static constexpr char kSetMarkedTextRect[] = "TextInput.setMarkedTextRect";
31
32 static constexpr char kInputActionKey[] = "inputAction";
33 static constexpr char kTextInputTypeKey[] = "inputType";
34 static constexpr char kEnableDeltaModel[] = "enableDeltaModel";
35 static constexpr char kTextInputTypeNameKey[] = "name";
36 static constexpr char kTextKey[] = "text";
37 static constexpr char kSelectionBaseKey[] = "selectionBase";
38 static constexpr char kSelectionExtentKey[] = "selectionExtent";
39 static constexpr char kSelectionAffinityKey[] = "selectionAffinity";
40 static constexpr char kSelectionIsDirectionalKey[] = "selectionIsDirectional";
41 static constexpr char kComposingBaseKey[] = "composingBase";
42 static constexpr char kComposingExtentKey[] = "composingExtent";
43
44 static constexpr char kTransform[] = "transform";
45
46 static constexpr char kTextAffinityDownstream[] = "TextAffinity.downstream";
47 static constexpr char kMultilineInputType[] = "TextInputType.multiline";
48 static constexpr char kNoneInputType[] = "TextInputType.none";
49
50 static constexpr char kNewlineInputAction[] = "TextInputAction.newline";
51
52 static constexpr int64_t kClientIdUnset = -1;
53
54 typedef enum {
55 kFlTextInputTypeText,
56 // Send newline when multi-line and enter is pressed.
57 kFlTextInputTypeMultiline,
58 // The input method is not shown at all.
59 kFlTextInputTypeNone,
60 } FlTextInputType;
61
62 struct FlTextInputHandlerPrivate {
63 GObject parent_instance;
64
65 FlMethodChannel* channel;
66
67 // Client ID provided by Flutter to report events with.
68 int64_t client_id;
69
70 // Input action to perform when enter pressed.
71 gchar* input_action;
72
73 // The type of the input method.
74 FlTextInputType input_type;
75
76 // Whether to enable that the engine sends text input updates to the framework
77 // as TextEditingDeltas or as one TextEditingValue.
78 // For more information on the delta model, see:
79 // https://master-api.flutter.dev/flutter/services/TextInputConfiguration/enableDeltaModel.html
80 gboolean enable_delta_model;
81
82 // Input method.
83 GtkIMContext* im_context;
84
85 FlTextInputViewDelegate* view_delegate;
86
87 flutter::TextInputModel* text_model;
88
89 // A 4x4 matrix that maps from `EditableText` local coordinates to the
90 // coordinate system of `PipelineOwner.rootNode`.
91 double editabletext_transform[4][4];
92
93 // The smallest rect, in local coordinates, of the text in the composing
94 // range, or of the caret in the case where there is no current composing
95 // range. This value is updated via `TextInput.setMarkedTextRect` messages
96 // over the text input channel.
97 GdkRectangle composing_rect;
98 };
99
100 G_DEFINE_TYPE_WITH_PRIVATE(FlTextInputHandler,
101 fl_text_input_handler,
102 G_TYPE_OBJECT)
103
104 // Completes method call and returns TRUE if the call was successful.
105 static gboolean finish_method(GObject* object,
106 GAsyncResult* result,
107 GError** error) {
108 g_autoptr(FlMethodResponse) response = fl_method_channel_invoke_method_finish(
109 FL_METHOD_CHANNEL(object), result, error);
110 if (response == nullptr) {
111 return FALSE;
112 }
113 return fl_method_response_get_result(response, error) != nullptr;
114 }
115
116 // Called when a response is received from TextInputClient.updateEditingState()
117 static void update_editing_state_response_cb(GObject* object,
118 GAsyncResult* result,
119 gpointer user_data) {
120 g_autoptr(GError) error = nullptr;
121 if (!finish_method(object, result, &error)) {
122 g_warning("Failed to call %s: %s", kUpdateEditingStateMethod,
123 error->message);
124 }
125 }
126
127 // Informs Flutter of text input changes.
128 static void update_editing_state(FlTextInputHandler* self) {
129 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
130 fl_text_input_handler_get_instance_private(self));
131
132 g_autoptr(FlValue) args = fl_value_new_list();
133 fl_value_append_take(args, fl_value_new_int(priv->client_id));
134 g_autoptr(FlValue) value = fl_value_new_map();
135
136 flutter::TextRange selection = priv->text_model->selection();
137 fl_value_set_string_take(
138 value, kTextKey,
139 fl_value_new_string(priv->text_model->GetText().c_str()));
140 fl_value_set_string_take(value, kSelectionBaseKey,
141 fl_value_new_int(selection.base()));
142 fl_value_set_string_take(value, kSelectionExtentKey,
143 fl_value_new_int(selection.extent()));
144
145 int composing_base = -1;
146 int composing_extent = -1;
147 if (!priv->text_model->composing_range().collapsed()) {
148 composing_base = priv->text_model->composing_range().base();
149 composing_extent = priv->text_model->composing_range().extent();
150 }
151 fl_value_set_string_take(value, kComposingBaseKey,
152 fl_value_new_int(composing_base));
153 fl_value_set_string_take(value, kComposingExtentKey,
154 fl_value_new_int(composing_extent));
155
156 // The following keys are not implemented and set to default values.
157 fl_value_set_string_take(value, kSelectionAffinityKey,
158 fl_value_new_string(kTextAffinityDownstream));
159 fl_value_set_string_take(value, kSelectionIsDirectionalKey,
160 fl_value_new_bool(FALSE));
161
162 fl_value_append(args, value);
163
164 fl_method_channel_invoke_method(priv->channel, kUpdateEditingStateMethod,
165 args, nullptr,
166 update_editing_state_response_cb, self);
167 }
168
169 // Informs Flutter of text input changes by passing just the delta.
170 static void update_editing_state_with_delta(FlTextInputHandler* self,
171 flutter::TextEditingDelta* delta) {
172 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
173 fl_text_input_handler_get_instance_private(self));
174
175 g_autoptr(FlValue) args = fl_value_new_list();
176 fl_value_append_take(args, fl_value_new_int(priv->client_id));
177
178 g_autoptr(FlValue) deltaValue = fl_value_new_map();
179 fl_value_set_string_take(deltaValue, "oldText",
180 fl_value_new_string(delta->old_text().c_str()));
181
182 fl_value_set_string_take(deltaValue, "deltaText",
183 fl_value_new_string(delta->delta_text().c_str()));
184
185 fl_value_set_string_take(deltaValue, "deltaStart",
186 fl_value_new_int(delta->delta_start()));
187
188 fl_value_set_string_take(deltaValue, "deltaEnd",
189 fl_value_new_int(delta->delta_end()));
190
191 flutter::TextRange selection = priv->text_model->selection();
192 fl_value_set_string_take(deltaValue, "selectionBase",
193 fl_value_new_int(selection.base()));
194
195 fl_value_set_string_take(deltaValue, "selectionExtent",
196 fl_value_new_int(selection.extent()));
197
198 fl_value_set_string_take(deltaValue, "selectionAffinity",
199 fl_value_new_string(kTextAffinityDownstream));
200
201 fl_value_set_string_take(deltaValue, "selectionIsDirectional",
202 fl_value_new_bool(FALSE));
203
204 int composing_base = -1;
205 int composing_extent = -1;
206 if (!priv->text_model->composing_range().collapsed()) {
207 composing_base = priv->text_model->composing_range().base();
208 composing_extent = priv->text_model->composing_range().extent();
209 }
210 fl_value_set_string_take(deltaValue, "composingBase",
211 fl_value_new_int(composing_base));
212 fl_value_set_string_take(deltaValue, "composingExtent",
213 fl_value_new_int(composing_extent));
214
215 g_autoptr(FlValue) deltas = fl_value_new_list();
216 fl_value_append(deltas, deltaValue);
217 g_autoptr(FlValue) value = fl_value_new_map();
218 fl_value_set_string(value, "deltas", deltas);
219
220 fl_value_append(args, value);
221
222 fl_method_channel_invoke_method(
223 priv->channel, kUpdateEditingStateWithDeltasMethod, args, nullptr,
224 update_editing_state_response_cb, self);
225 }
226
227 // Called when a response is received from TextInputClient.performAction()
228 static void perform_action_response_cb(GObject* object,
229 GAsyncResult* result,
230 gpointer user_data) {
231 g_autoptr(GError) error = nullptr;
232 if (!finish_method(object, result, &error)) {
233 g_warning("Failed to call %s: %s", kPerformActionMethod, error->message);
234 }
235 }
236
237 // Inform Flutter that the input has been activated.
238 static void perform_action(FlTextInputHandler* self) {
239 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
240 fl_text_input_handler_get_instance_private(self));
241
242 g_return_if_fail(FL_IS_TEXT_INPUT_HANDLER(self));
243 g_return_if_fail(priv->client_id != 0);
244 g_return_if_fail(priv->input_action != nullptr);
245
246 g_autoptr(FlValue) args = fl_value_new_list();
247 fl_value_append_take(args, fl_value_new_int(priv->client_id));
248 fl_value_append_take(args, fl_value_new_string(priv->input_action));
249
250 fl_method_channel_invoke_method(priv->channel, kPerformActionMethod, args,
251 nullptr, perform_action_response_cb, self);
252 }
253
254 // Signal handler for GtkIMContext::preedit-start
255 static void im_preedit_start_cb(FlTextInputHandler* self) {
256 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
257 fl_text_input_handler_get_instance_private(self));
258 priv->text_model->BeginComposing();
259 }
260
261 // Signal handler for GtkIMContext::preedit-changed
262 static void im_preedit_changed_cb(FlTextInputHandler* self) {
263 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
264 fl_text_input_handler_get_instance_private(self));
265 std::string text_before_change = priv->text_model->GetText();
266 flutter::TextRange composing_before_change =
267 priv->text_model->composing_range();
268 g_autofree gchar* buf = nullptr;
269 gint cursor_offset = 0;
270 gtk_im_context_get_preedit_string(priv->im_context, &buf, nullptr,
271 &cursor_offset);
272 if (priv->text_model->composing()) {
273 cursor_offset += priv->text_model->composing_range().start();
274 } else {
275 cursor_offset += priv->text_model->selection().start();
276 }
277 priv->text_model->UpdateComposingText(buf);
278 priv->text_model->SetSelection(flutter::TextRange(cursor_offset));
279
280 if (priv->enable_delta_model) {
281 std::string text(buf);
282 flutter::TextEditingDelta delta = flutter::TextEditingDelta(
283 text_before_change, composing_before_change, text);
284 update_editing_state_with_delta(self, &delta);
285 } else {
286 update_editing_state(self);
287 }
288 }
289
290 // Signal handler for GtkIMContext::commit
291 static void im_commit_cb(FlTextInputHandler* self, const gchar* text) {
292 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
293 fl_text_input_handler_get_instance_private(self));
294 std::string text_before_change = priv->text_model->GetText();
295 flutter::TextRange composing_before_change =
296 priv->text_model->composing_range();
297 flutter::TextRange selection_before_change = priv->text_model->selection();
298 gboolean was_composing = priv->text_model->composing();
299
300 priv->text_model->AddText(text);
301 if (priv->text_model->composing()) {
302 priv->text_model->CommitComposing();
303 }
304
305 if (priv->enable_delta_model) {
306 flutter::TextRange replace_range =
307 was_composing ? composing_before_change : selection_before_change;
308 std::unique_ptr<flutter::TextEditingDelta> delta =
309 std::make_unique<flutter::TextEditingDelta>(text_before_change,
310 replace_range, text);
311 update_editing_state_with_delta(self, delta.get());
312 } else {
313 update_editing_state(self);
314 }
315 }
316
317 // Signal handler for GtkIMContext::preedit-end
318 static void im_preedit_end_cb(FlTextInputHandler* self) {
319 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
320 fl_text_input_handler_get_instance_private(self));
321 priv->text_model->EndComposing();
322 if (priv->enable_delta_model) {
323 flutter::TextEditingDelta delta =
324 flutter::TextEditingDelta(priv->text_model->GetText());
325 update_editing_state_with_delta(self, &delta);
326 } else {
327 update_editing_state(self);
328 }
329 }
330
331 // Signal handler for GtkIMContext::retrieve-surrounding
332 static gboolean im_retrieve_surrounding_cb(FlTextInputHandler* self) {
333 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
334 fl_text_input_handler_get_instance_private(self));
335 auto text = priv->text_model->GetText();
336 size_t cursor_offset = priv->text_model->GetCursorOffset();
337 gtk_im_context_set_surrounding(priv->im_context, text.c_str(), -1,
338 cursor_offset);
339 return TRUE;
340 }
341
342 // Signal handler for GtkIMContext::delete-surrounding
343 static gboolean im_delete_surrounding_cb(FlTextInputHandler* self,
344 gint offset,
345 gint n_chars) {
346 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
347 fl_text_input_handler_get_instance_private(self));
348
349 std::string text_before_change = priv->text_model->GetText();
350 if (priv->text_model->DeleteSurrounding(offset, n_chars)) {
351 if (priv->enable_delta_model) {
352 flutter::TextEditingDelta delta = flutter::TextEditingDelta(
353 text_before_change, priv->text_model->composing_range(),
354 priv->text_model->GetText());
355 update_editing_state_with_delta(self, &delta);
356 } else {
357 update_editing_state(self);
358 }
359 }
360 return TRUE;
361 }
362
363 // Called when the input method client is set up.
364 static FlMethodResponse* set_client(FlTextInputHandler* self, FlValue* args) {
365 if (fl_value_get_type(args) != FL_VALUE_TYPE_LIST ||
366 fl_value_get_length(args) < 2) {
367 return FL_METHOD_RESPONSE(fl_method_error_response_new(
368 kBadArgumentsError, "Expected 2-element list", nullptr));
369 }
370 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
371 fl_text_input_handler_get_instance_private(self));
372
373 priv->client_id = fl_value_get_int(fl_value_get_list_value(args, 0));
374 FlValue* config_value = fl_value_get_list_value(args, 1);
375 g_free(priv->input_action);
376 FlValue* input_action_value =
377 fl_value_lookup_string(config_value, kInputActionKey);
378 if (fl_value_get_type(input_action_value) == FL_VALUE_TYPE_STRING) {
379 priv->input_action = g_strdup(fl_value_get_string(input_action_value));
380 }
381
382 FlValue* enable_delta_model_value =
383 fl_value_lookup_string(config_value, kEnableDeltaModel);
384 gboolean enable_delta_model = fl_value_get_bool(enable_delta_model_value);
385 priv->enable_delta_model = enable_delta_model;
386
387 // Reset the input type, then set only if appropriate.
388 priv->input_type = kFlTextInputTypeText;
389 FlValue* input_type_value =
390 fl_value_lookup_string(config_value, kTextInputTypeKey);
391 if (fl_value_get_type(input_type_value) == FL_VALUE_TYPE_MAP) {
392 FlValue* input_type_name =
393 fl_value_lookup_string(input_type_value, kTextInputTypeNameKey);
394 if (fl_value_get_type(input_type_name) == FL_VALUE_TYPE_STRING) {
395 const gchar* input_type = fl_value_get_string(input_type_name);
396 if (g_strcmp0(input_type, kMultilineInputType) == 0) {
397 priv->input_type = kFlTextInputTypeMultiline;
398 } else if (g_strcmp0(input_type, kNoneInputType) == 0) {
399 priv->input_type = kFlTextInputTypeNone;
400 }
401 }
402 }
403
404 return FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
405 }
406
407 // Hides the input method.
408 static FlMethodResponse* hide(FlTextInputHandler* self) {
409 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
410 fl_text_input_handler_get_instance_private(self));
411 gtk_im_context_focus_out(priv->im_context);
412
413 return FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
414 }
415
416 // Shows the input method.
417 static FlMethodResponse* show(FlTextInputHandler* self) {
418 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
419 fl_text_input_handler_get_instance_private(self));
420 if (priv->input_type == kFlTextInputTypeNone) {
421 return hide(self);
422 }
423
424 gtk_im_context_focus_in(priv->im_context);
425
426 return FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
427 }
428
429 // Updates the editing state from Flutter.
430 static FlMethodResponse* set_editing_state(FlTextInputHandler* self,
431 FlValue* args) {
432 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
433 fl_text_input_handler_get_instance_private(self));
434 const gchar* text =
435 fl_value_get_string(fl_value_lookup_string(args, kTextKey));
436 priv->text_model->SetText(text);
437
438 int64_t selection_base =
439 fl_value_get_int(fl_value_lookup_string(args, kSelectionBaseKey));
440 int64_t selection_extent =
441 fl_value_get_int(fl_value_lookup_string(args, kSelectionExtentKey));
442 // Flutter uses -1/-1 for invalid; translate that to 0/0 for the model.
443 if (selection_base == -1 && selection_extent == -1) {
444 selection_base = selection_extent = 0;
445 }
446
447 priv->text_model->SetText(text);
448 priv->text_model->SetSelection(
449 flutter::TextRange(selection_base, selection_extent));
450
451 int64_t composing_base =
452 fl_value_get_int(fl_value_lookup_string(args, kComposingBaseKey));
453 int64_t composing_extent =
454 fl_value_get_int(fl_value_lookup_string(args, kComposingExtentKey));
455 if (composing_base == -1 && composing_extent == -1) {
456 priv->text_model->EndComposing();
457 } else {
458 size_t composing_start = std::min(composing_base, composing_extent);
459 size_t cursor_offset = selection_base - composing_start;
460 priv->text_model->SetComposingRange(
461 flutter::TextRange(composing_base, composing_extent), cursor_offset);
462 }
463
464 return FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
465 }
466
467 // Called when the input method client is complete.
468 static FlMethodResponse* clear_client(FlTextInputHandler* self) {
469 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
470 fl_text_input_handler_get_instance_private(self));
471 priv->client_id = kClientIdUnset;
472
473 return FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
474 }
475
476 // Update the IM cursor position.
477 //
478 // As text is input by the user, the framework sends two streams of updates
479 // over the text input channel: updates to the composing rect (cursor rect when
480 // not in IME composing mode) and updates to the matrix transform from local
481 // coordinates to Flutter root coordinates. This function is called after each
482 // of these updates. It transforms the composing rect to GDK window coordinates
483 // and notifies GTK of the updated cursor position.
484 static void update_im_cursor_position(FlTextInputHandler* self) {
485 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
486 fl_text_input_handler_get_instance_private(self));
487
488 // Skip update if not composing to avoid setting to position 0.
489 if (!priv->text_model->composing()) {
490 return;
491 }
492
493 // Transform the x, y positions of the cursor from local coordinates to
494 // Flutter view coordinates.
495 gint x = priv->composing_rect.x * priv->editabletext_transform[0][0] +
496 priv->composing_rect.y * priv->editabletext_transform[1][0] +
497 priv->editabletext_transform[3][0] + priv->composing_rect.width;
498 gint y = priv->composing_rect.x * priv->editabletext_transform[0][1] +
499 priv->composing_rect.y * priv->editabletext_transform[1][1] +
500 priv->editabletext_transform[3][1] + priv->composing_rect.height;
501
502 // Transform from Flutter view coordinates to GTK window coordinates.
503 GdkRectangle preedit_rect = {};
504 fl_text_input_view_delegate_translate_coordinates(
505 priv->view_delegate, x, y, &preedit_rect.x, &preedit_rect.y);
506
507 // Set the cursor location in window coordinates so that GTK can position any
508 // system input method windows.
509 gtk_im_context_set_cursor_location(priv->im_context, &preedit_rect);
510 }
511
512 // Handles updates to the EditableText size and position from the framework.
513 //
514 // On changes to the size or position of the RenderObject underlying the
515 // EditableText, this update may be triggered. It provides an updated size and
516 // transform from the local coordinate system of the EditableText to root
517 // Flutter coordinate system.
518 static FlMethodResponse* set_editable_size_and_transform(
519 FlTextInputHandler* self,
520 FlValue* args) {
521 FlValue* transform = fl_value_lookup_string(args, kTransform);
522 size_t transform_len = fl_value_get_length(transform);
523 g_warn_if_fail(transform_len == 16);
524
525 for (size_t i = 0; i < transform_len; ++i) {
526 double val = fl_value_get_float(fl_value_get_list_value(transform, i));
527 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
528 fl_text_input_handler_get_instance_private(self));
529 priv->editabletext_transform[i / 4][i % 4] = val;
530 }
531 update_im_cursor_position(self);
532
533 return FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
534 }
535
536 // Handles updates to the composing rect from the framework.
537 //
538 // On changes to the state of the EditableText in the framework, this update
539 // may be triggered. It provides an updated rect for the composing region in
540 // local coordinates of the EditableText. In the case where there is no
541 // composing region, the cursor rect is sent.
542 static FlMethodResponse* set_marked_text_rect(FlTextInputHandler* self,
543 FlValue* args) {
544 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
545 fl_text_input_handler_get_instance_private(self));
546 priv->composing_rect.x =
547 fl_value_get_float(fl_value_lookup_string(args, "x"));
548 priv->composing_rect.y =
549 fl_value_get_float(fl_value_lookup_string(args, "y"));
550 priv->composing_rect.width =
551 fl_value_get_float(fl_value_lookup_string(args, "width"));
552 priv->composing_rect.height =
553 fl_value_get_float(fl_value_lookup_string(args, "height"));
554 update_im_cursor_position(self);
555
556 return FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr));
557 }
558
559 // Called when a method call is received from Flutter.
560 static void method_call_cb(FlMethodChannel* channel,
561 FlMethodCall* method_call,
562 gpointer user_data) {
563 FlTextInputHandler* self = FL_TEXT_INPUT_HANDLER(user_data);
564
565 const gchar* method = fl_method_call_get_name(method_call);
566 FlValue* args = fl_method_call_get_args(method_call);
567
568 g_autoptr(FlMethodResponse) response = nullptr;
569 if (strcmp(method, kSetClientMethod) == 0) {
570 response = set_client(self, args);
571 } else if (strcmp(method, kShowMethod) == 0) {
572 response = show(self);
573 } else if (strcmp(method, kSetEditingStateMethod) == 0) {
574 response = set_editing_state(self, args);
575 } else if (strcmp(method, kClearClientMethod) == 0) {
576 response = clear_client(self);
577 } else if (strcmp(method, kHideMethod) == 0) {
578 response = hide(self);
579 } else if (strcmp(method, kSetEditableSizeAndTransform) == 0) {
580 response = set_editable_size_and_transform(self, args);
581 } else if (strcmp(method, kSetMarkedTextRect) == 0) {
582 response = set_marked_text_rect(self, args);
583 } else {
584 response = FL_METHOD_RESPONSE(fl_method_not_implemented_response_new());
585 }
586
587 g_autoptr(GError) error = nullptr;
588 if (!fl_method_call_respond(method_call, response, &error)) {
589 g_warning("Failed to send method call response: %s", error->message);
590 }
591 }
592
593 // Disposes of an FlTextInputHandler.
594 static void fl_text_input_handler_dispose(GObject* object) {
595 FlTextInputHandler* self = FL_TEXT_INPUT_HANDLER(object);
596 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
597 fl_text_input_handler_get_instance_private(self));
598
599 g_clear_object(&priv->channel);
600 g_clear_pointer(&priv->input_action, g_free);
601 g_clear_object(&priv->im_context);
602 if (priv->text_model != nullptr) {
603 delete priv->text_model;
604 priv->text_model = nullptr;
605 }
606 if (priv->view_delegate != nullptr) {
607 g_object_remove_weak_pointer(
608 G_OBJECT(priv->view_delegate),
609 reinterpret_cast<gpointer*>(&(priv->view_delegate)));
610 priv->view_delegate = nullptr;
611 }
612
613 G_OBJECT_CLASS(fl_text_input_handler_parent_class)->dispose(object);
614 }
615
616 // Implements FlTextInputHandler::filter_keypress.
617 static gboolean fl_text_input_handler_filter_keypress_default(
618 FlTextInputHandler* self,
619 FlKeyEvent* event) {
620 g_return_val_if_fail(FL_IS_TEXT_INPUT_HANDLER(self), false);
621
622 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
623 fl_text_input_handler_get_instance_private(self));
624
625 if (priv->client_id == kClientIdUnset) {
626 return FALSE;
627 }
628
629 if (gtk_im_context_filter_keypress(
630 priv->im_context,
631 reinterpret_cast<GdkEventKey*>(fl_key_event_get_origin(event)))) {
632 return TRUE;
633 }
634
635 std::string text_before_change = priv->text_model->GetText();
636 flutter::TextRange selection_before_change = priv->text_model->selection();
637 std::string text = priv->text_model->GetText();
638
639 // Handle the enter/return key.
640 gboolean do_action = FALSE;
641 // Handle navigation keys.
642 gboolean changed = FALSE;
643 if (fl_key_event_get_is_press(event)) {
644 switch (fl_key_event_get_keyval(event)) {
645 case GDK_KEY_End:
646 case GDK_KEY_KP_End:
647 if (fl_key_event_get_state(event) & GDK_SHIFT_MASK) {
648 changed = priv->text_model->SelectToEnd();
649 } else {
650 changed = priv->text_model->MoveCursorToEnd();
651 }
652 break;
653 case GDK_KEY_Return:
654 case GDK_KEY_KP_Enter:
655 case GDK_KEY_ISO_Enter:
656 if (priv->input_type == kFlTextInputTypeMultiline &&
657 strcmp(priv->input_action, kNewlineInputAction) == 0) {
658 priv->text_model->AddCodePoint('\n');
659 text = "\n";
660 changed = TRUE;
661 }
662 do_action = TRUE;
663 break;
664 case GDK_KEY_Home:
665 case GDK_KEY_KP_Home:
666 if (fl_key_event_get_state(event) & GDK_SHIFT_MASK) {
667 changed = priv->text_model->SelectToBeginning();
668 } else {
669 changed = priv->text_model->MoveCursorToBeginning();
670 }
671 break;
672 case GDK_KEY_BackSpace:
673 case GDK_KEY_Delete:
674 case GDK_KEY_KP_Delete:
675 case GDK_KEY_Left:
676 case GDK_KEY_KP_Left:
677 case GDK_KEY_Right:
678 case GDK_KEY_KP_Right:
679 // Already handled inside the framework in RenderEditable.
680 break;
681 }
682 }
683
684 if (changed) {
685 if (priv->enable_delta_model) {
686 flutter::TextEditingDelta delta = flutter::TextEditingDelta(
687 text_before_change, selection_before_change, text);
688 update_editing_state_with_delta(self, &delta);
689 } else {
690 update_editing_state(self);
691 }
692 }
693 if (do_action) {
694 perform_action(self);
695 }
696
697 return changed;
698 }
699
700 // Initializes the FlTextInputHandler class.
701 static void fl_text_input_handler_class_init(FlTextInputHandlerClass* klass) {
702 G_OBJECT_CLASS(klass)->dispose = fl_text_input_handler_dispose;
703 FL_TEXT_INPUT_HANDLER_CLASS(klass)->filter_keypress =
704 fl_text_input_handler_filter_keypress_default;
705 }
706
707 // Initializes an instance of the FlTextInputHandler class.
708 static void fl_text_input_handler_init(FlTextInputHandler* self) {
709 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
710 fl_text_input_handler_get_instance_private(self));
711
712 priv->client_id = kClientIdUnset;
713 priv->input_type = kFlTextInputTypeText;
714 priv->text_model = new flutter::TextInputModel();
715 }
716
717 static void init_im_context(FlTextInputHandler* self,
718 GtkIMContext* im_context) {
719 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
720 fl_text_input_handler_get_instance_private(self));
721 priv->im_context = GTK_IM_CONTEXT(g_object_ref(im_context));
722
723 // On Wayland, this call sets up the input method so it can be enabled
724 // immediately when required. Without it, on-screen keyboard's don't come up
725 // the first time a text field is focused.
726 gtk_im_context_focus_out(priv->im_context);
727
728 g_signal_connect_object(priv->im_context, "preedit-start",
729 G_CALLBACK(im_preedit_start_cb), self,
730 G_CONNECT_SWAPPED);
731 g_signal_connect_object(priv->im_context, "preedit-end",
732 G_CALLBACK(im_preedit_end_cb), self,
733 G_CONNECT_SWAPPED);
734 g_signal_connect_object(priv->im_context, "preedit-changed",
735 G_CALLBACK(im_preedit_changed_cb), self,
736 G_CONNECT_SWAPPED);
737 g_signal_connect_object(priv->im_context, "commit", G_CALLBACK(im_commit_cb),
738 self, G_CONNECT_SWAPPED);
739 g_signal_connect_object(priv->im_context, "retrieve-surrounding",
740 G_CALLBACK(im_retrieve_surrounding_cb), self,
741 G_CONNECT_SWAPPED);
742 g_signal_connect_object(priv->im_context, "delete-surrounding",
743 G_CALLBACK(im_delete_surrounding_cb), self,
744 G_CONNECT_SWAPPED);
745 }
746
747 FlTextInputHandler* fl_text_input_handler_new(
748 FlBinaryMessenger* messenger,
749 GtkIMContext* im_context,
750 FlTextInputViewDelegate* view_delegate) {
751 g_return_val_if_fail(FL_IS_BINARY_MESSENGER(messenger), nullptr);
752 g_return_val_if_fail(GTK_IS_IM_CONTEXT(im_context), nullptr);
753 g_return_val_if_fail(FL_IS_TEXT_INPUT_VIEW_DELEGATE(view_delegate), nullptr);
754
755 FlTextInputHandler* self = FL_TEXT_INPUT_HANDLER(
756 g_object_new(fl_text_input_handler_get_type(), nullptr));
757
758 g_autoptr(FlJsonMethodCodec) codec = fl_json_method_codec_new();
759 FlTextInputHandlerPrivate* priv = static_cast<FlTextInputHandlerPrivate*>(
760 fl_text_input_handler_get_instance_private(self));
761 priv->channel =
762 fl_method_channel_new(messenger, kChannelName, FL_METHOD_CODEC(codec));
763 fl_method_channel_set_method_call_handler(priv->channel, method_call_cb, self,
764 nullptr);
765
766 init_im_context(self, im_context);
767
768 priv->view_delegate = view_delegate;
769 g_object_add_weak_pointer(
770 G_OBJECT(view_delegate),
771 reinterpret_cast<gpointer*>(&(priv->view_delegate)));
772
773 return self;
774 }
775
776 // Filters the a keypress given to the handler through the handler's
777 // filter_keypress callback.
778 gboolean fl_text_input_handler_filter_keypress(FlTextInputHandler* self,
779 FlKeyEvent* event) {
780 g_return_val_if_fail(FL_IS_TEXT_INPUT_HANDLER(self), FALSE);
781 if (FL_TEXT_INPUT_HANDLER_GET_CLASS(self)->filter_keypress) {
782 return FL_TEXT_INPUT_HANDLER_GET_CLASS(self)->filter_keypress(self, event);
783 }
784 return FALSE;
785 }
fl_json_method_codec_new
G_MODULE_EXPORT FlJsonMethodCodec * fl_json_method_codec_new()
Definition: fl_json_method_codec.cc:205
fl_text_input_handler_init
static void fl_text_input_handler_init(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:708
FL_VALUE_TYPE_MAP
@ FL_VALUE_TYPE_MAP
Definition: fl_value.h:75
event
FlKeyEvent * event
Definition: fl_key_channel_responder.cc:118
kChannelName
static constexpr char kChannelName[]
Definition: fl_text_input_handler.cc:14
finish_method
static gboolean finish_method(GObject *object, GAsyncResult *result, GError **error)
Definition: fl_binary_messenger.cc:305
kHideMethod
static constexpr char kHideMethod[]
Definition: fl_text_input_handler.cc:22
fl_method_channel_new
G_MODULE_EXPORT FlMethodChannel * fl_method_channel_new(FlBinaryMessenger *messenger, const gchar *name, FlMethodCodec *codec)
Definition: fl_method_channel.cc:112
fl_method_error_response_new
G_MODULE_EXPORT FlMethodErrorResponse * fl_method_error_response_new(const gchar *code, const gchar *message, FlValue *details)
Definition: fl_method_response.cc:144
im_delete_surrounding_cb
static gboolean im_delete_surrounding_cb(FlTextInputHandler *self, gint offset, gint n_chars)
Definition: fl_text_input_handler.cc:343
fl_text_input_view_delegate_translate_coordinates
void fl_text_input_view_delegate_translate_coordinates(FlTextInputViewDelegate *self, gint view_x, gint view_y, gint *window_x, gint *window_y)
Definition: fl_text_input_view_delegate.cc:14
FlTextInputHandlerPrivate::view_delegate
FlTextInputViewDelegate * view_delegate
Definition: fl_text_input_handler.cc:85
FlTextInputHandlerPrivate::input_type
FlTextInputType input_type
Definition: fl_text_input_handler.cc:74
fl_value_set_string_take
G_MODULE_EXPORT void fl_value_set_string_take(FlValue *self, const gchar *key, FlValue *value)
Definition: fl_value.cc:650
FlTextInputHandlerPrivate::enable_delta_model
gboolean enable_delta_model
Definition: fl_text_input_handler.cc:80
fl_method_not_implemented_response_new
G_MODULE_EXPORT FlMethodNotImplementedResponse * fl_method_not_implemented_response_new()
Definition: fl_method_response.cc:179
FlTextInputType
FlTextInputType
Definition: fl_text_input_handler.cc:54
set_client
static FlMethodResponse * set_client(FlTextInputHandler *self, FlValue *args)
Definition: fl_text_input_handler.cc:364
fl_value_new_list
G_MODULE_EXPORT FlValue * fl_value_new_list()
Definition: fl_value.cc:349
kMultilineInputType
static constexpr char kMultilineInputType[]
Definition: fl_text_input_handler.cc:47
flutter::TextEditingDelta::delta_start
int delta_start() const
Get the delta_start_ value.
Definition: text_editing_delta.h:42
show
static FlMethodResponse * show(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:417
fl_method_channel.h
i
int i
Definition: fl_socket_accessible.cc:18
priv
FlPixelBufferTexturePrivate * priv
Definition: fl_pixel_buffer_texture.cc:30
fl_method_channel_invoke_method_finish
G_MODULE_EXPORT FlMethodResponse * fl_method_channel_invoke_method_finish(FlMethodChannel *self, GAsyncResult *result, GError **error)
Definition: fl_method_channel.cc:192
kSetEditableSizeAndTransform
static constexpr char kSetEditableSizeAndTransform[]
Definition: fl_text_input_handler.cc:28
fl_value_new_bool
G_MODULE_EXPORT FlValue * fl_value_new_bool(bool value)
Definition: fl_value.cc:255
FlValue
typedefG_BEGIN_DECLS struct _FlValue FlValue
Definition: fl_value.h:42
FlTextInputHandlerPrivate::channel
FlMethodChannel * channel
Definition: fl_text_input_handler.cc:65
hide
static FlMethodResponse * hide(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:408
fl_text_input_handler.h
user_data
FlKeyEvent uint64_t FlKeyResponderAsyncCallback gpointer user_data
Definition: fl_key_channel_responder.cc:121
FL_VALUE_TYPE_LIST
@ FL_VALUE_TYPE_LIST
Definition: fl_value.h:74
perform_action_response_cb
static void perform_action_response_cb(GObject *object, GAsyncResult *result, gpointer user_data)
Definition: fl_text_input_handler.cc:228
fl_text_input_handler_new
FlTextInputHandler * fl_text_input_handler_new(FlBinaryMessenger *messenger, GtkIMContext *im_context, FlTextInputViewDelegate *view_delegate)
Definition: fl_text_input_handler.cc:747
fl_value_get_bool
G_MODULE_EXPORT bool fl_value_get_bool(FlValue *self)
Definition: fl_value.cc:661
fl_text_input_handler_class_init
static void fl_text_input_handler_class_init(FlTextInputHandlerClass *klass)
Definition: fl_text_input_handler.cc:701
FlTextInputHandlerPrivate::parent_instance
GObject parent_instance
Definition: fl_text_input_handler.cc:63
fl_value_lookup_string
G_MODULE_EXPORT FlValue * fl_value_lookup_string(FlValue *self, const gchar *key)
Definition: fl_value.cc:811
init_im_context
static void init_im_context(FlTextInputHandler *self, GtkIMContext *im_context)
Definition: fl_text_input_handler.cc:717
kFlTextInputTypeText
@ kFlTextInputTypeText
Definition: fl_text_input_handler.cc:55
kTextAffinityDownstream
static constexpr char kTextAffinityDownstream[]
Definition: fl_text_input_handler.cc:46
fl_value_new_int
G_MODULE_EXPORT FlValue * fl_value_new_int(int64_t value)
Definition: fl_value.cc:262
FlTextInputHandlerPrivate::input_action
gchar * input_action
Definition: fl_text_input_handler.cc:71
fl_value_get_string
const G_MODULE_EXPORT gchar * fl_value_get_string(FlValue *self)
Definition: fl_value.cc:682
kInputActionKey
static constexpr char kInputActionKey[]
Definition: fl_text_input_handler.cc:32
kTextInputTypeKey
static constexpr char kTextInputTypeKey[]
Definition: fl_text_input_handler.cc:33
fl_method_success_response_new
G_MODULE_EXPORT FlMethodSuccessResponse * fl_method_success_response_new(FlValue *result)
Definition: fl_method_response.cc:126
FlTextInputHandlerPrivate::editabletext_transform
double editabletext_transform[4][4]
Definition: fl_text_input_handler.cc:91
im_preedit_end_cb
static void im_preedit_end_cb(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:318
fl_key_event_get_origin
GdkEvent * fl_key_event_get_origin(FlKeyEvent *self)
Definition: fl_key_event.cc:109
kTransform
static constexpr char kTransform[]
Definition: fl_text_input_handler.cc:44
text_input_model.h
FlTextInputHandlerPrivate::composing_rect
GdkRectangle composing_rect
Definition: fl_text_input_handler.cc:97
kSetClientMethod
static constexpr char kSetClientMethod[]
Definition: fl_text_input_handler.cc:18
set_editable_size_and_transform
static FlMethodResponse * set_editable_size_and_transform(FlTextInputHandler *self, FlValue *args)
Definition: fl_text_input_handler.cc:518
fl_value_get_int
G_MODULE_EXPORT int64_t fl_value_get_int(FlValue *self)
Definition: fl_value.cc:668
im_preedit_changed_cb
static void im_preedit_changed_cb(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:262
flutter::TextRange
Definition: text_range.h:19
set_editing_state
static FlMethodResponse * set_editing_state(FlTextInputHandler *self, FlValue *args)
Definition: fl_text_input_handler.cc:430
flutter::TextEditingDelta::delta_text
std::string delta_text() const
Definition: text_editing_delta.h:39
fl_method_call_respond
G_MODULE_EXPORT gboolean fl_method_call_respond(FlMethodCall *self, FlMethodResponse *response, GError **error)
Definition: fl_method_call.cc:77
kClientIdUnset
static constexpr int64_t kClientIdUnset
Definition: fl_text_input_handler.cc:52
flutter::TextRange::base
size_t base() const
Definition: text_range.h:30
kSetEditingStateMethod
static constexpr char kSetEditingStateMethod[]
Definition: fl_text_input_handler.cc:20
fl_key_event_get_keyval
guint fl_key_event_get_keyval(FlKeyEvent *self)
Definition: fl_key_event.cc:94
update_editing_state
static void update_editing_state(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:128
fl_value_new_map
G_MODULE_EXPORT FlValue * fl_value_new_map()
Definition: fl_value.cc:366
G_DEFINE_TYPE_WITH_PRIVATE
G_DEFINE_TYPE_WITH_PRIVATE(FlTextInputHandler, fl_text_input_handler, G_TYPE_OBJECT) static gboolean finish_method(GObject *object
fl_value_get_type
G_MODULE_EXPORT FlValueType fl_value_get_type(FlValue *self)
Definition: fl_value.cc:466
fl_value_get_list_value
G_MODULE_EXPORT FlValue * fl_value_get_list_value(FlValue *self, size_t index)
Definition: fl_value.cc:776
fl_text_input_handler_filter_keypress_default
static gboolean fl_text_input_handler_filter_keypress_default(FlTextInputHandler *self, FlKeyEvent *event)
Definition: fl_text_input_handler.cc:617
error
GAsyncResult GError ** error
Definition: fl_text_input_handler.cc:107
kUpdateEditingStateWithDeltasMethod
static constexpr char kUpdateEditingStateWithDeltasMethod[]
Definition: fl_text_input_handler.cc:25
method_call
G_BEGIN_DECLS G_MODULE_EXPORT FlMethodCall * method_call
Definition: fl_method_channel.h:120
kSetMarkedTextRect
static constexpr char kSetMarkedTextRect[]
Definition: fl_text_input_handler.cc:30
FL_VALUE_TYPE_STRING
@ FL_VALUE_TYPE_STRING
Definition: fl_value.h:69
fl_method_response_get_result
return fl_method_response_get_result(response, error) !
method_call_cb
static void method_call_cb(FlMethodChannel *channel, FlMethodCall *method_call, gpointer user_data)
Definition: fl_text_input_handler.cc:560
fl_text_input_handler_filter_keypress
gboolean fl_text_input_handler_filter_keypress(FlTextInputHandler *self, FlKeyEvent *event)
Definition: fl_text_input_handler.cc:778
flutter::TextEditingDelta::old_text
std::string old_text() const
Definition: text_editing_delta.h:34
im_preedit_start_cb
static void im_preedit_start_cb(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:255
fl_method_call_get_name
const G_MODULE_EXPORT gchar * fl_method_call_get_name(FlMethodCall *self)
Definition: fl_method_call.cc:67
kComposingBaseKey
static constexpr char kComposingBaseKey[]
Definition: fl_text_input_handler.cc:41
TRUE
return TRUE
Definition: fl_pixel_buffer_texture_test.cc:53
kFlTextInputTypeNone
@ kFlTextInputTypeNone
Definition: fl_text_input_handler.cc:59
clear_client
static FlMethodResponse * clear_client(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:468
update_im_cursor_position
static void update_im_cursor_position(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:484
set_marked_text_rect
static FlMethodResponse * set_marked_text_rect(FlTextInputHandler *self, FlValue *args)
Definition: fl_text_input_handler.cc:542
fl_value_get_float
G_MODULE_EXPORT double fl_value_get_float(FlValue *self)
Definition: fl_value.cc:675
fl_value_append_take
G_MODULE_EXPORT void fl_value_append_take(FlValue *self, FlValue *value)
Definition: fl_value.cc:600
fl_value_get_length
G_MODULE_EXPORT size_t fl_value_get_length(FlValue *self)
Definition: fl_value.cc:724
fl_text_input_handler_dispose
static void fl_text_input_handler_dispose(GObject *object)
Definition: fl_text_input_handler.cc:594
fl_method_channel_invoke_method
G_MODULE_EXPORT void fl_method_channel_invoke_method(FlMethodChannel *self, const gchar *method, FlValue *args, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data)
Definition: fl_method_channel.cc:162
kFlTextInputTypeMultiline
@ kFlTextInputTypeMultiline
Definition: fl_text_input_handler.cc:57
kNewlineInputAction
static constexpr char kNewlineInputAction[]
Definition: fl_text_input_handler.cc:50
kTextKey
static constexpr char kTextKey[]
Definition: fl_text_input_handler.cc:36
fl_value_set_string
G_MODULE_EXPORT void fl_value_set_string(FlValue *self, const gchar *key, FlValue *value)
Definition: fl_value.cc:639
FlTextInputHandlerPrivate::im_context
GtkIMContext * im_context
Definition: fl_text_input_handler.cc:83
fl_method_channel_set_method_call_handler
G_MODULE_EXPORT void fl_method_channel_set_method_call_handler(FlMethodChannel *self, FlMethodChannelMethodCallHandler handler, gpointer user_data, GDestroyNotify destroy_notify)
Definition: fl_method_channel.cc:134
kSelectionBaseKey
static constexpr char kSelectionBaseKey[]
Definition: fl_text_input_handler.cc:37
result
GAsyncResult * result
Definition: fl_text_input_handler.cc:106
kShowMethod
static constexpr char kShowMethod[]
Definition: fl_text_input_handler.cc:19
fl_key_event_get_state
GdkModifierType fl_key_event_get_state(FlKeyEvent *self)
Definition: fl_key_event.cc:99
kEnableDeltaModel
static constexpr char kEnableDeltaModel[]
Definition: fl_text_input_handler.cc:34
kComposingExtentKey
static constexpr char kComposingExtentKey[]
Definition: fl_text_input_handler.cc:42
kSelectionIsDirectionalKey
static constexpr char kSelectionIsDirectionalKey[]
Definition: fl_text_input_handler.cc:40
FlTextInputHandlerPrivate
Definition: fl_text_input_handler.cc:62
kUpdateEditingStateMethod
static constexpr char kUpdateEditingStateMethod[]
Definition: fl_text_input_handler.cc:23
args
G_BEGIN_DECLS G_MODULE_EXPORT FlValue * args
Definition: fl_event_channel.h:89
flutter::TextRange::extent
size_t extent() const
Definition: text_range.h:36
kClearClientMethod
static constexpr char kClearClientMethod[]
Definition: fl_text_input_handler.cc:21
flutter::TextInputModel
Definition: text_input_model.h:18
kTextInputTypeNameKey
static constexpr char kTextInputTypeNameKey[]
Definition: fl_text_input_handler.cc:35
text_editing_delta.h
fl_value_append
G_MODULE_EXPORT void fl_value_append(FlValue *self, FlValue *value)
Definition: fl_value.cc:592
kSelectionExtentKey
static constexpr char kSelectionExtentKey[]
Definition: fl_text_input_handler.cc:38
kPerformActionMethod
static constexpr char kPerformActionMethod[]
Definition: fl_text_input_handler.cc:27
fl_key_event_get_is_press
gboolean fl_key_event_get_is_press(FlKeyEvent *self)
Definition: fl_key_event.cc:84
kBadArgumentsError
static constexpr char kBadArgumentsError[]
Definition: fl_text_input_handler.cc:16
kNoneInputType
static constexpr char kNoneInputType[]
Definition: fl_text_input_handler.cc:48
fl_method_call_get_args
G_MODULE_EXPORT FlValue * fl_method_call_get_args(FlMethodCall *self)
Definition: fl_method_call.cc:72
FlTextInputHandlerPrivate::client_id
int64_t client_id
Definition: fl_text_input_handler.cc:68
flutter::TextEditingDelta
A change in the state of an input field.
Definition: text_editing_delta.h:16
perform_action
static void perform_action(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:238
update_editing_state_response_cb
static void update_editing_state_response_cb(GObject *object, GAsyncResult *result, gpointer user_data)
Definition: fl_text_input_handler.cc:117
im_retrieve_surrounding_cb
static gboolean im_retrieve_surrounding_cb(FlTextInputHandler *self)
Definition: fl_text_input_handler.cc:332
im_commit_cb
static void im_commit_cb(FlTextInputHandler *self, const gchar *text)
Definition: fl_text_input_handler.cc:291
value
uint8_t value
Definition: fl_standard_message_codec.cc:36
FlTextInputHandlerPrivate::text_model
flutter::TextInputModel * text_model
Definition: fl_text_input_handler.cc:87
fl_json_method_codec.h
fl_value_new_string
G_MODULE_EXPORT FlValue * fl_value_new_string(const gchar *value)
Definition: fl_value.cc:276
flutter::TextEditingDelta::delta_end
int delta_end() const
Get the delta_end_ value.
Definition: text_editing_delta.h:45
kSelectionAffinityKey
static constexpr char kSelectionAffinityKey[]
Definition: fl_text_input_handler.cc:39
update_editing_state_with_delta
static void update_editing_state_with_delta(FlTextInputHandler *self, flutter::TextEditingDelta *delta)
Definition: fl_text_input_handler.cc:170