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| 1 /* | |
| 2 * Copyright (C) 1998, 1999 Alex Roberts, Evan Lawrence | |
| 3 * Copyright (C) 2000, 2001 Chema Celorio, Paolo Maggi | |
| 4 * Copyright (C) 2002-2005 Paolo Maggi | |
| 5 * | |
| 6 * This library is free software; you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU Lesser General Public | |
| 8 * License as published by the Free Software Foundation; either | |
| 9 * version 2.1 of the License, or (at your option) any later version. | |
| 10 * | |
| 11 * This library is distributed in the hope that it will be useful, | |
| 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * Lesser General Public License for more details. | |
| 15 | |
| 16 * You should have received a copy of the GNU Lesser General Public | |
| 17 * License along with this library; if not, write to the Free Software | |
| 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 */ | |
| 20 | |
| 21 #ifdef HAVE_CONFIG_H | |
| 22 #include <config.h> | |
| 23 #endif | |
| 24 | |
| 25 #include <glib.h> | |
| 26 #include <stdlib.h> | |
| 27 #include <string.h> | |
| 28 | |
| 29 #include "undo_manager.h" | |
| 30 | |
| 31 #define DEFAULT_MAX_UNDO_LEVELS 25 | |
| 32 | |
| 33 typedef struct _GtkSourceUndoAction GtkSourceUndoAction; | |
| 34 typedef struct _GtkSourceUndoInsertAction GtkSourceUndoInsertAction; | |
| 35 typedef struct _GtkSourceUndoDeleteAction GtkSourceUndoDeleteAction; | |
| 36 | |
| 37 typedef enum { | |
| 38 GTK_SOURCE_UNDO_ACTION_INSERT, | |
| 39 GTK_SOURCE_UNDO_ACTION_DELETE, | |
| 40 } GtkSourceUndoActionType; | |
| 41 | |
| 42 /* | |
| 43 * We use offsets instead of GtkTextIters because the last ones | |
| 44 * require to much memory in this context without giving us any advantage. | |
| 45 */ | |
| 46 | |
| 47 struct _GtkSourceUndoInsertAction { | |
| 48 gint pos; | |
| 49 gchar *text; | |
| 50 gint length; | |
| 51 gint chars; | |
| 52 }; | |
| 53 | |
| 54 struct _GtkSourceUndoDeleteAction { | |
| 55 gint start; | |
| 56 gint end; | |
| 57 gchar *text; | |
| 58 gboolean forward; | |
| 59 }; | |
| 60 | |
| 61 struct _GtkSourceUndoAction { | |
| 62 GtkSourceUndoActionType action_type; | |
| 63 | |
| 64 union { | |
| 65 GtkSourceUndoInsertAction insert; | |
| 66 GtkSourceUndoDeleteAction delete; | |
| 67 } action; | |
| 68 | |
| 69 gint order_in_group; | |
| 70 | |
| 71 /* It is TRUE whether the action can be merged with the following action. */ | |
| 72 guint mergeable : 1; | |
| 73 | |
| 74 /* It is TRUE whether the action is marked as "modified". | |
| 75 * An action is marked as "modified" if it changed the | |
| 76 * state of the buffer from "not modified" to "modified". Only the first | |
| 77 * action of a group can be marked as modified. | |
| 78 * There can be a single action marked as "modified" in the actions list. | |
| 79 */ | |
| 80 guint modified : 1; | |
| 81 }; | |
| 82 | |
| 83 /* INVALID is a pointer to an invalid action */ | |
| 84 #define INVALID ((void *) "IA") | |
| 85 | |
| 86 struct _GtkSourceUndoManagerPrivate { | |
| 87 GtkTextBuffer *document; | |
| 88 | |
| 89 GList* actions; | |
| 90 gint next_redo; | |
| 91 | |
| 92 gint actions_in_current_group; | |
| 93 | |
| 94 gint running_not_undoable_actions; | |
| 95 | |
| 96 gint num_of_groups; | |
| 97 | |
| 98 gint max_undo_levels; | |
| 99 | |
| 100 guint can_undo : 1; | |
| 101 guint can_redo : 1; | |
| 102 | |
| 103 /* It is TRUE whether, while undoing an action of the current group (with orde
r_in_group > 1), | |
| 104 * the state of the buffer changed from "not modified" to "modified". | |
| 105 */ | |
| 106 guint modified_undoing_group : 1; | |
| 107 | |
| 108 /* Pointer to the action (in the action list) marked as "modified". | |
| 109 * It is NULL when no action is marked as "modified". | |
| 110 * It is INVALID when the action marked as "modified" has been removed | |
| 111 * from the action list (freeing the list or resizing it) */ | |
| 112 GtkSourceUndoAction *modified_action; | |
| 113 }; | |
| 114 | |
| 115 enum { | |
| 116 CAN_UNDO, | |
| 117 CAN_REDO, | |
| 118 LAST_SIGNAL | |
| 119 }; | |
| 120 | |
| 121 #if !defined(NDEBUG) | |
| 122 static void | |
| 123 print_state(GtkSourceUndoManager* um) | |
| 124 { | |
| 125 fprintf(stderr, "\n***\n"); | |
| 126 GList* actions = um->priv->actions; | |
| 127 | |
| 128 for (; actions; actions = g_list_next(actions)) { | |
| 129 GtkSourceUndoAction* act = actions->data; | |
| 130 fprintf(stderr, "* type = %s\n", act->action_type == GTK_SOURCE_UNDO_ACTION_
DELETE ? | |
| 131 "delete" : "insert"); | |
| 132 | |
| 133 fprintf(stderr, "\ttext = %s\n", act->action_type == GTK_SOURCE_UNDO_ACTION_
DELETE | |
| 134 ? act->action.delete.text : act->action.insert.text); | |
| 135 fprintf(stderr, "\torder = %d\n", act->order_in_group); | |
| 136 } | |
| 137 | |
| 138 fprintf(stderr, "* next redo: %d\n", um->priv->next_redo); | |
| 139 fprintf(stderr, "* num of groups: %d\n", um->priv->num_of_groups); | |
| 140 fprintf(stderr, "* actions in group: %d\n", um->priv->actions_in_current_group
); | |
| 141 } | |
| 142 #endif | |
| 143 | |
| 144 static void gtk_source_undo_manager_class_init(GtkSourceUndoManagerClass *klass)
; | |
| 145 static void gtk_source_undo_manager_init(GtkSourceUndoManager *um); | |
| 146 static void gtk_source_undo_manager_finalize(GObject *object); | |
| 147 | |
| 148 static void gtk_source_undo_manager_insert_text_handler(GtkTextBuffer *buffer, | |
| 149 GtkTextIter *pos, | |
| 150 const gchar *text, | |
| 151 gint length, | |
| 152 GtkSourceUndoManager *um); | |
| 153 static void gtk_source_undo_manager_delete_range_handler(GtkTextBuffer *buffer, | |
| 154 GtkTextIter *start, | |
| 155 GtkTextIter *end, | |
| 156 GtkSourceUndoManager *um); | |
| 157 static void gtk_source_undo_manager_begin_user_action_handler(GtkTextBuffer *buf
fer, | |
| 158 GtkSourceUndoManager *um); | |
| 159 static void gtk_source_undo_manager_modified_changed_handler(GtkTextBuffer *buff
er, | |
| 160 GtkSourceUndoManager *um); | |
| 161 | |
| 162 static void gtk_source_undo_manager_free_action_list(GtkSourceUndoManager *um); | |
| 163 | |
| 164 static void gtk_source_undo_manager_add_action(GtkSourceUndoManager *um, | |
| 165 const GtkSourceUndoAction *undo_
action); | |
| 166 static void gtk_source_undo_manager_free_first_n_actions(GtkSourceUndoManager *u
m, | |
| 167 gint n); | |
| 168 static void gtk_source_undo_manager_check_list_size(GtkSourceUndoManager *um); | |
| 169 | |
| 170 static gboolean gtk_source_undo_manager_merge_action(GtkSourceUndoManager *um, | |
| 171 const GtkSourceUndoAction *undo_a
ction); | |
| 172 | |
| 173 static GObjectClass *parent_class = NULL; | |
| 174 static guint undo_manager_signals [LAST_SIGNAL] = { 0 }; | |
| 175 | |
| 176 GType | |
| 177 gtk_source_undo_manager_get_type(void) { | |
| 178 static GType undo_manager_type = 0; | |
| 179 | |
| 180 if(undo_manager_type == 0) | |
| 181 { | |
| 182 static const GTypeInfo our_info = | |
| 183 { | |
| 184 sizeof(GtkSourceUndoManagerClass), | |
| 185 NULL, /* base_init */ | |
| 186 NULL, /* base_finalize */ | |
| 187 (GClassInitFunc) gtk_source_undo_manager_class_init, | |
| 188 NULL, /* class_finalize */ | |
| 189 NULL, /* class_data */ | |
| 190 sizeof(GtkSourceUndoManager), | |
| 191 0, /* n_preallocs */ | |
| 192 (GInstanceInitFunc) gtk_source_undo_manager_init, | |
| 193 NULL /* value_table */ | |
| 194 }; | |
| 195 | |
| 196 undo_manager_type = g_type_register_static(G_TYPE_OBJECT, | |
| 197 "GtkSourceUndoManager", | |
| 198 &our_info, | |
| 199 0); | |
| 200 } | |
| 201 | |
| 202 return undo_manager_type; | |
| 203 } | |
| 204 | |
| 205 static void | |
| 206 gtk_source_undo_manager_class_init(GtkSourceUndoManagerClass *klass) { | |
| 207 GObjectClass *object_class = G_OBJECT_CLASS(klass); | |
| 208 | |
| 209 parent_class = g_type_class_peek_parent(klass); | |
| 210 | |
| 211 object_class->finalize = gtk_source_undo_manager_finalize; | |
| 212 | |
| 213 klass->can_undo = NULL; | |
| 214 klass->can_redo = NULL; | |
| 215 | |
| 216 undo_manager_signals[CAN_UNDO] = | |
| 217 g_signal_new("can_undo", | |
| 218 G_OBJECT_CLASS_TYPE(object_class), | |
| 219 G_SIGNAL_RUN_LAST, | |
| 220 G_STRUCT_OFFSET(GtkSourceUndoManagerClass, can_undo), | |
| 221 NULL, NULL, | |
| 222 g_cclosure_marshal_VOID__BOOLEAN, | |
| 223 G_TYPE_NONE, | |
| 224 1, | |
| 225 G_TYPE_BOOLEAN); | |
| 226 | |
| 227 undo_manager_signals[CAN_REDO] = | |
| 228 g_signal_new("can_redo", | |
| 229 G_OBJECT_CLASS_TYPE(object_class), | |
| 230 G_SIGNAL_RUN_LAST, | |
| 231 G_STRUCT_OFFSET(GtkSourceUndoManagerClass, can_redo), | |
| 232 NULL, NULL, | |
| 233 g_cclosure_marshal_VOID__BOOLEAN, | |
| 234 G_TYPE_NONE, | |
| 235 1, | |
| 236 G_TYPE_BOOLEAN); | |
| 237 } | |
| 238 | |
| 239 static void | |
| 240 gtk_source_undo_manager_init(GtkSourceUndoManager *um) { | |
| 241 um->priv = g_new0(GtkSourceUndoManagerPrivate, 1); | |
| 242 | |
| 243 um->priv->actions = NULL; | |
| 244 um->priv->next_redo = 0; | |
| 245 | |
| 246 um->priv->can_undo = FALSE; | |
| 247 um->priv->can_redo = FALSE; | |
| 248 | |
| 249 um->priv->running_not_undoable_actions = 0; | |
| 250 | |
| 251 um->priv->num_of_groups = 0; | |
| 252 | |
| 253 um->priv->max_undo_levels = DEFAULT_MAX_UNDO_LEVELS; | |
| 254 | |
| 255 um->priv->modified_action = NULL; | |
| 256 | |
| 257 um->priv->modified_undoing_group = FALSE; | |
| 258 } | |
| 259 | |
| 260 static void | |
| 261 gtk_source_undo_manager_finalize(GObject *object) { | |
| 262 GtkSourceUndoManager *um; | |
| 263 | |
| 264 g_return_if_fail(object != NULL); | |
| 265 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(object)); | |
| 266 | |
| 267 um = GTK_SOURCE_UNDO_MANAGER(object); | |
| 268 | |
| 269 g_return_if_fail(um->priv != NULL); | |
| 270 | |
| 271 if(um->priv->actions != NULL) | |
| 272 gtk_source_undo_manager_free_action_list(um); | |
| 273 | |
| 274 g_signal_handlers_disconnect_by_func(G_OBJECT(um->priv->document), | |
| 275 G_CALLBACK(gtk_source_undo_manager_delete_range_handler), | |
| 276 um); | |
| 277 | |
| 278 g_signal_handlers_disconnect_by_func(G_OBJECT(um->priv->document), | |
| 279 G_CALLBACK(gtk_source_undo_manager_insert_text_handler), | |
| 280 um); | |
| 281 | |
| 282 g_signal_handlers_disconnect_by_func(G_OBJECT(um->priv->document), | |
| 283 G_CALLBACK(gtk_source_undo_manager_begin_user_action_handler), | |
| 284 um); | |
| 285 | |
| 286 g_signal_handlers_disconnect_by_func(G_OBJECT(um->priv->document), | |
| 287 G_CALLBACK(gtk_source_undo_manager_modified_changed_handler), | |
| 288 um); | |
| 289 | |
| 290 g_free(um->priv); | |
| 291 | |
| 292 G_OBJECT_CLASS(parent_class)->finalize(object); | |
| 293 } | |
| 294 | |
| 295 GtkSourceUndoManager* | |
| 296 gtk_source_undo_manager_new(GtkTextBuffer* buffer) { | |
| 297 GtkSourceUndoManager *um; | |
| 298 | |
| 299 um = GTK_SOURCE_UNDO_MANAGER(g_object_new(GTK_SOURCE_TYPE_UNDO_MANAGER, NULL))
; | |
| 300 | |
| 301 g_return_val_if_fail(um->priv != NULL, NULL); | |
| 302 um->priv->document = buffer; | |
| 303 | |
| 304 g_signal_connect(G_OBJECT(buffer), "insert_text", | |
| 305 G_CALLBACK(gtk_source_undo_manager_insert_text_handler), | |
| 306 um); | |
| 307 | |
| 308 g_signal_connect(G_OBJECT(buffer), "delete_range", | |
| 309 G_CALLBACK(gtk_source_undo_manager_delete_range_handler), | |
| 310 um); | |
| 311 | |
| 312 g_signal_connect(G_OBJECT(buffer), "begin_user_action", | |
| 313 G_CALLBACK(gtk_source_undo_manager_begin_user_action_handler), | |
| 314 um); | |
| 315 | |
| 316 g_signal_connect(G_OBJECT(buffer), "modified_changed", | |
| 317 G_CALLBACK(gtk_source_undo_manager_modified_changed_handler), | |
| 318 um); | |
| 319 return um; | |
| 320 } | |
| 321 | |
| 322 void | |
| 323 gtk_source_undo_manager_begin_not_undoable_action(GtkSourceUndoManager *um) { | |
| 324 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 325 g_return_if_fail(um->priv != NULL); | |
| 326 | |
| 327 ++um->priv->running_not_undoable_actions; | |
| 328 } | |
| 329 | |
| 330 static void | |
| 331 gtk_source_undo_manager_end_not_undoable_action_internal(GtkSourceUndoManager *u
m) { | |
| 332 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 333 g_return_if_fail(um->priv != NULL); | |
| 334 | |
| 335 g_return_if_fail(um->priv->running_not_undoable_actions > 0); | |
| 336 | |
| 337 --um->priv->running_not_undoable_actions; | |
| 338 } | |
| 339 | |
| 340 void | |
| 341 gtk_source_undo_manager_end_not_undoable_action(GtkSourceUndoManager *um) { | |
| 342 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 343 g_return_if_fail(um->priv != NULL); | |
| 344 | |
| 345 gtk_source_undo_manager_end_not_undoable_action_internal(um); | |
| 346 | |
| 347 if(um->priv->running_not_undoable_actions == 0) | |
| 348 { | |
| 349 gtk_source_undo_manager_free_action_list(um); | |
| 350 | |
| 351 um->priv->next_redo = -1; | |
| 352 | |
| 353 if(um->priv->can_undo) | |
| 354 { | |
| 355 um->priv->can_undo = FALSE; | |
| 356 g_signal_emit(G_OBJECT(um), | |
| 357 undo_manager_signals [CAN_UNDO], | |
| 358 0, | |
| 359 FALSE); | |
| 360 } | |
| 361 | |
| 362 if(um->priv->can_redo) | |
| 363 { | |
| 364 um->priv->can_redo = FALSE; | |
| 365 g_signal_emit(G_OBJECT(um), | |
| 366 undo_manager_signals [CAN_REDO], | |
| 367 0, | |
| 368 FALSE); | |
| 369 } | |
| 370 } | |
| 371 } | |
| 372 | |
| 373 gboolean | |
| 374 gtk_source_undo_manager_can_undo(const GtkSourceUndoManager *um) { | |
| 375 g_return_val_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um), FALSE); | |
| 376 g_return_val_if_fail(um->priv != NULL, FALSE); | |
| 377 | |
| 378 return um->priv->can_undo; | |
| 379 } | |
| 380 | |
| 381 gboolean | |
| 382 gtk_source_undo_manager_can_redo(const GtkSourceUndoManager *um) { | |
| 383 g_return_val_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um), FALSE); | |
| 384 g_return_val_if_fail(um->priv != NULL, FALSE); | |
| 385 | |
| 386 return um->priv->can_redo; | |
| 387 } | |
| 388 | |
| 389 static void | |
| 390 set_cursor(GtkTextBuffer *buffer, gint cursor) { | |
| 391 GtkTextIter iter; | |
| 392 | |
| 393 /* Place the cursor at the requested position */ | |
| 394 gtk_text_buffer_get_iter_at_offset(buffer, &iter, cursor); | |
| 395 gtk_text_buffer_place_cursor(buffer, &iter); | |
| 396 } | |
| 397 | |
| 398 static void | |
| 399 insert_text(GtkTextBuffer *buffer, gint pos, const gchar *text, gint len) { | |
| 400 GtkTextIter iter; | |
| 401 | |
| 402 gtk_text_buffer_get_iter_at_offset(buffer, &iter, pos); | |
| 403 gtk_text_buffer_insert(buffer, &iter, text, len); | |
| 404 } | |
| 405 | |
| 406 static void | |
| 407 delete_text(GtkTextBuffer *buffer, gint start, gint end) { | |
| 408 GtkTextIter start_iter; | |
| 409 GtkTextIter end_iter; | |
| 410 | |
| 411 gtk_text_buffer_get_iter_at_offset(buffer, &start_iter, start); | |
| 412 | |
| 413 if(end < 0) | |
| 414 gtk_text_buffer_get_end_iter(buffer, &end_iter); | |
| 415 else | |
| 416 gtk_text_buffer_get_iter_at_offset(buffer, &end_iter, end); | |
| 417 | |
| 418 gtk_text_buffer_delete(buffer, &start_iter, &end_iter); | |
| 419 } | |
| 420 | |
| 421 static gchar* | |
| 422 get_chars(GtkTextBuffer *buffer, gint start, gint end) { | |
| 423 GtkTextIter start_iter; | |
| 424 GtkTextIter end_iter; | |
| 425 | |
| 426 gtk_text_buffer_get_iter_at_offset(buffer, &start_iter, start); | |
| 427 | |
| 428 if(end < 0) | |
| 429 gtk_text_buffer_get_end_iter(buffer, &end_iter); | |
| 430 else | |
| 431 gtk_text_buffer_get_iter_at_offset(buffer, &end_iter, end); | |
| 432 | |
| 433 return gtk_text_buffer_get_slice(buffer, &start_iter, &end_iter, TRUE); | |
| 434 } | |
| 435 | |
| 436 void | |
| 437 gtk_source_undo_manager_undo(GtkSourceUndoManager *um) { | |
| 438 GtkSourceUndoAction *undo_action; | |
| 439 gboolean modified = FALSE; | |
| 440 | |
| 441 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 442 g_return_if_fail(um->priv != NULL); | |
| 443 g_return_if_fail(um->priv->can_undo); | |
| 444 | |
| 445 um->priv->modified_undoing_group = FALSE; | |
| 446 | |
| 447 gtk_source_undo_manager_begin_not_undoable_action(um); | |
| 448 | |
| 449 do | |
| 450 { | |
| 451 undo_action = g_list_nth_data(um->priv->actions, um->priv->next_redo + 1); | |
| 452 g_return_if_fail(undo_action != NULL); | |
| 453 | |
| 454 /* undo_action->modified can be TRUE only if undo_action->order_in_group <=
1 */ | |
| 455 g_return_if_fail((undo_action->order_in_group <= 1) || | |
| 456 ((undo_action->order_in_group > 1) && !undo_action->modified)); | |
| 457 | |
| 458 if(undo_action->order_in_group <= 1) | |
| 459 { | |
| 460 /* Set modified to TRUE only if the buffer did not change its state from | |
| 461 * "not modified" to "modified" undoing an action(with order_in_group > 1) | |
| 462 * in current group. */ | |
| 463 modified =(undo_action->modified && !um->priv->modified_undoing_group); | |
| 464 } | |
| 465 | |
| 466 switch(undo_action->action_type) | |
| 467 { | |
| 468 case GTK_SOURCE_UNDO_ACTION_DELETE: | |
| 469 insert_text( | |
| 470 um->priv->document, | |
| 471 undo_action->action.delete.start, | |
| 472 undo_action->action.delete.text, | |
| 473 strlen(undo_action->action.delete.text)); | |
| 474 | |
| 475 if(undo_action->action.delete.forward) | |
| 476 set_cursor( | |
| 477 um->priv->document, | |
| 478 undo_action->action.delete.start); | |
| 479 else | |
| 480 set_cursor( | |
| 481 um->priv->document, | |
| 482 undo_action->action.delete.end); | |
| 483 | |
| 484 break; | |
| 485 | |
| 486 case GTK_SOURCE_UNDO_ACTION_INSERT: | |
| 487 delete_text( | |
| 488 um->priv->document, | |
| 489 undo_action->action.insert.pos, | |
| 490 undo_action->action.insert.pos + | |
| 491 undo_action->action.insert.chars); | |
| 492 | |
| 493 set_cursor( | |
| 494 um->priv->document, | |
| 495 undo_action->action.insert.pos); | |
| 496 break; | |
| 497 | |
| 498 default: | |
| 499 /* Unknown action type. */ | |
| 500 g_return_if_reached(); | |
| 501 } | |
| 502 | |
| 503 ++um->priv->next_redo; | |
| 504 | |
| 505 } while(undo_action->order_in_group > 1); | |
| 506 | |
| 507 if(modified) | |
| 508 { | |
| 509 --um->priv->next_redo; | |
| 510 gtk_text_buffer_set_modified(um->priv->document, FALSE); | |
| 511 ++um->priv->next_redo; | |
| 512 } | |
| 513 | |
| 514 gtk_source_undo_manager_end_not_undoable_action_internal(um); | |
| 515 | |
| 516 um->priv->modified_undoing_group = FALSE; | |
| 517 | |
| 518 if(!um->priv->can_redo) | |
| 519 { | |
| 520 um->priv->can_redo = TRUE; | |
| 521 g_signal_emit(G_OBJECT(um), | |
| 522 undo_manager_signals [CAN_REDO], | |
| 523 0, | |
| 524 TRUE); | |
| 525 } | |
| 526 | |
| 527 if(um->priv->next_redo >=(gint)(g_list_length(um->priv->actions) - 1)) | |
| 528 { | |
| 529 um->priv->can_undo = FALSE; | |
| 530 g_signal_emit(G_OBJECT(um), | |
| 531 undo_manager_signals [CAN_UNDO], | |
| 532 0, | |
| 533 FALSE); | |
| 534 } | |
| 535 } | |
| 536 | |
| 537 void | |
| 538 gtk_source_undo_manager_redo(GtkSourceUndoManager *um) { | |
| 539 GtkSourceUndoAction *undo_action; | |
| 540 gboolean modified = FALSE; | |
| 541 | |
| 542 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 543 g_return_if_fail(um->priv != NULL); | |
| 544 g_return_if_fail(um->priv->can_redo); | |
| 545 | |
| 546 undo_action = g_list_nth_data(um->priv->actions, um->priv->next_redo); | |
| 547 g_return_if_fail(undo_action != NULL); | |
| 548 | |
| 549 gtk_source_undo_manager_begin_not_undoable_action(um); | |
| 550 | |
| 551 do | |
| 552 { | |
| 553 if(undo_action->modified) | |
| 554 { | |
| 555 g_return_if_fail(undo_action->order_in_group <= 1); | |
| 556 modified = TRUE; | |
| 557 } | |
| 558 | |
| 559 --um->priv->next_redo; | |
| 560 | |
| 561 switch(undo_action->action_type) | |
| 562 { | |
| 563 case GTK_SOURCE_UNDO_ACTION_DELETE: | |
| 564 delete_text( | |
| 565 um->priv->document, | |
| 566 undo_action->action.delete.start, | |
| 567 undo_action->action.delete.end); | |
| 568 | |
| 569 set_cursor( | |
| 570 um->priv->document, | |
| 571 undo_action->action.delete.start); | |
| 572 | |
| 573 break; | |
| 574 | |
| 575 case GTK_SOURCE_UNDO_ACTION_INSERT: | |
| 576 set_cursor( | |
| 577 um->priv->document, | |
| 578 undo_action->action.insert.pos); | |
| 579 | |
| 580 insert_text( | |
| 581 um->priv->document, | |
| 582 undo_action->action.insert.pos, | |
| 583 undo_action->action.insert.text, | |
| 584 undo_action->action.insert.length); | |
| 585 | |
| 586 break; | |
| 587 | |
| 588 default: | |
| 589 /* Unknown action type */ | |
| 590 ++um->priv->next_redo; | |
| 591 g_return_if_reached(); | |
| 592 } | |
| 593 | |
| 594 if(um->priv->next_redo < 0) | |
| 595 undo_action = NULL; | |
| 596 else | |
| 597 undo_action = g_list_nth_data(um->priv->actions, um->priv->next_redo); | |
| 598 | |
| 599 } while((undo_action != NULL) &&(undo_action->order_in_group > 1)); | |
| 600 | |
| 601 if(modified) | |
| 602 { | |
| 603 ++um->priv->next_redo; | |
| 604 gtk_text_buffer_set_modified(um->priv->document, FALSE); | |
| 605 --um->priv->next_redo; | |
| 606 } | |
| 607 | |
| 608 gtk_source_undo_manager_end_not_undoable_action_internal(um); | |
| 609 | |
| 610 if(um->priv->next_redo < 0) | |
| 611 { | |
| 612 um->priv->can_redo = FALSE; | |
| 613 g_signal_emit(G_OBJECT(um), undo_manager_signals [CAN_REDO], 0, FALSE); | |
| 614 } | |
| 615 | |
| 616 if(!um->priv->can_undo) | |
| 617 { | |
| 618 um->priv->can_undo = TRUE; | |
| 619 g_signal_emit(G_OBJECT(um), undo_manager_signals [CAN_UNDO], 0, TRUE); | |
| 620 } | |
| 621 } | |
| 622 | |
| 623 static void | |
| 624 gtk_source_undo_action_free(GtkSourceUndoAction *action) { | |
| 625 if(action == NULL) | |
| 626 return; | |
| 627 | |
| 628 if(action->action_type == GTK_SOURCE_UNDO_ACTION_INSERT) | |
| 629 g_free(action->action.insert.text); | |
| 630 else if(action->action_type == GTK_SOURCE_UNDO_ACTION_DELETE) | |
| 631 g_free(action->action.delete.text); | |
| 632 else | |
| 633 g_return_if_reached(); | |
| 634 | |
| 635 g_free(action); | |
| 636 } | |
| 637 | |
| 638 static void | |
| 639 gtk_source_undo_manager_free_action_list(GtkSourceUndoManager *um) { | |
| 640 GList *l; | |
| 641 | |
| 642 l = um->priv->actions; | |
| 643 | |
| 644 while(l != NULL) | |
| 645 { | |
| 646 GtkSourceUndoAction *action = l->data; | |
| 647 | |
| 648 if(action->order_in_group == 1) | |
| 649 --um->priv->num_of_groups; | |
| 650 um->priv->actions_in_current_group = action->order_in_group - 1; | |
| 651 | |
| 652 if(action->modified) | |
| 653 um->priv->modified_action = INVALID; | |
| 654 | |
| 655 gtk_source_undo_action_free(action); | |
| 656 | |
| 657 l = g_list_next(l); | |
| 658 } | |
| 659 | |
| 660 g_list_free(um->priv->actions); | |
| 661 um->priv->actions = NULL; | |
| 662 } | |
| 663 | |
| 664 static void | |
| 665 gtk_source_undo_manager_insert_text_handler(GtkTextBuffer *buffer, | |
| 666 GtkTextIter *pos, | |
| 667 const gchar *text, | |
| 668 gint length, | |
| 669 GtkSourceUndoManager *um) { | |
| 670 GtkSourceUndoAction undo_action; | |
| 671 | |
| 672 if(um->priv->running_not_undoable_actions > 0) | |
| 673 return; | |
| 674 | |
| 675 undo_action.action_type = GTK_SOURCE_UNDO_ACTION_INSERT; | |
| 676 | |
| 677 undo_action.action.insert.pos = gtk_text_iter_get_offset(pos); | |
| 678 undo_action.action.insert.text =(gchar*) text; | |
| 679 undo_action.action.insert.length = length; | |
| 680 undo_action.action.insert.chars = g_utf8_strlen(text, length); | |
| 681 | |
| 682 if((undo_action.action.insert.chars > 1) ||(g_utf8_get_char(text) == '\n')) | |
| 683 | |
| 684 undo_action.mergeable = FALSE; | |
| 685 else | |
| 686 undo_action.mergeable = TRUE; | |
| 687 | |
| 688 undo_action.modified = FALSE; | |
| 689 | |
| 690 gtk_source_undo_manager_add_action(um, &undo_action); | |
| 691 } | |
| 692 | |
| 693 static void | |
| 694 gtk_source_undo_manager_delete_range_handler(GtkTextBuffer *buffer, | |
| 695 GtkTextIter *start, | |
| 696 GtkTextIter *end, | |
| 697 GtkSourceUndoManager *um) { | |
| 698 GtkSourceUndoAction undo_action; | |
| 699 GtkTextIter insert_iter; | |
| 700 | |
| 701 if(um->priv->running_not_undoable_actions > 0) | |
| 702 return; | |
| 703 | |
| 704 undo_action.action_type = GTK_SOURCE_UNDO_ACTION_DELETE; | |
| 705 | |
| 706 gtk_text_iter_order(start, end); | |
| 707 | |
| 708 undo_action.action.delete.start = gtk_text_iter_get_offset(start); | |
| 709 undo_action.action.delete.end = gtk_text_iter_get_offset(end); | |
| 710 | |
| 711 undo_action.action.delete.text = get_chars( | |
| 712 buffer, | |
| 713 undo_action.action.delete.start, | |
| 714 undo_action.action.delete.end); | |
| 715 | |
| 716 /* figure out if the user used the Delete or the Backspace key */ | |
| 717 gtk_text_buffer_get_iter_at_mark(buffer, &insert_iter, | |
| 718 gtk_text_buffer_get_insert(buffer)); | |
| 719 if(gtk_text_iter_get_offset(&insert_iter) <= undo_action.action.delete.start) | |
| 720 undo_action.action.delete.forward = TRUE; | |
| 721 else | |
| 722 undo_action.action.delete.forward = FALSE; | |
| 723 | |
| 724 if(((undo_action.action.delete.end - undo_action.action.delete.start) > 1) || | |
| 725 (g_utf8_get_char(undo_action.action.delete.text ) == '\n')) | |
| 726 undo_action.mergeable = FALSE; | |
| 727 else | |
| 728 undo_action.mergeable = TRUE; | |
| 729 | |
| 730 undo_action.modified = FALSE; | |
| 731 | |
| 732 gtk_source_undo_manager_add_action(um, &undo_action); | |
| 733 | |
| 734 g_free(undo_action.action.delete.text); | |
| 735 | |
| 736 } | |
| 737 | |
| 738 static void | |
| 739 gtk_source_undo_manager_begin_user_action_handler(GtkTextBuffer *buffer, GtkSour
ceUndoManager *um) { | |
| 740 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 741 g_return_if_fail(um->priv != NULL); | |
| 742 | |
| 743 if(um->priv->running_not_undoable_actions > 0) | |
| 744 return; | |
| 745 | |
| 746 um->priv->actions_in_current_group = 0; | |
| 747 } | |
| 748 | |
| 749 static void | |
| 750 gtk_source_undo_manager_add_action(GtkSourceUndoManager *um, | |
| 751 const GtkSourceUndoAction *undo_action) { | |
| 752 GtkSourceUndoAction* action; | |
| 753 | |
| 754 if(um->priv->next_redo >= 0) | |
| 755 { | |
| 756 gtk_source_undo_manager_free_first_n_actions(um, um->priv->next_redo + 1); | |
| 757 } | |
| 758 | |
| 759 um->priv->next_redo = -1; | |
| 760 | |
| 761 if(!gtk_source_undo_manager_merge_action(um, undo_action)) | |
| 762 { | |
| 763 action = g_new(GtkSourceUndoAction, 1); | |
| 764 *action = *undo_action; | |
| 765 | |
| 766 if(action->action_type == GTK_SOURCE_UNDO_ACTION_INSERT) | |
| 767 action->action.insert.text = g_strndup(undo_action->action.insert.text, un
do_action->action.insert.length); | |
| 768 else if(action->action_type == GTK_SOURCE_UNDO_ACTION_DELETE) | |
| 769 action->action.delete.text = g_strdup(undo_action->action.delete.text); | |
| 770 else | |
| 771 { | |
| 772 g_free(action); | |
| 773 g_return_if_reached(); | |
| 774 } | |
| 775 | |
| 776 ++um->priv->actions_in_current_group; | |
| 777 action->order_in_group = um->priv->actions_in_current_group; | |
| 778 | |
| 779 if(action->order_in_group == 1) | |
| 780 ++um->priv->num_of_groups; | |
| 781 | |
| 782 um->priv->actions = g_list_prepend(um->priv->actions, action); | |
| 783 } | |
| 784 | |
| 785 gtk_source_undo_manager_check_list_size(um); | |
| 786 | |
| 787 if(!um->priv->can_undo) | |
| 788 { | |
| 789 um->priv->can_undo = TRUE; | |
| 790 g_signal_emit(G_OBJECT(um), undo_manager_signals [CAN_UNDO], 0, TRUE); | |
| 791 } | |
| 792 | |
| 793 if(um->priv->can_redo) | |
| 794 { | |
| 795 um->priv->can_redo = FALSE; | |
| 796 g_signal_emit(G_OBJECT(um), undo_manager_signals [CAN_REDO], 0, FALSE); | |
| 797 } | |
| 798 } | |
| 799 | |
| 800 static void | |
| 801 gtk_source_undo_manager_free_first_n_actions(GtkSourceUndoManager *um, | |
| 802 gint n) { | |
| 803 gint i; | |
| 804 | |
| 805 if(um->priv->actions == NULL) | |
| 806 return; | |
| 807 | |
| 808 for(i = 0; i < n; i++) | |
| 809 { | |
| 810 GtkSourceUndoAction *action = g_list_first(um->priv->actions)->data; | |
| 811 | |
| 812 if(action->order_in_group == 1) | |
| 813 --um->priv->num_of_groups; | |
| 814 um->priv->actions_in_current_group = action->order_in_group - 1; | |
| 815 | |
| 816 if(action->modified) | |
| 817 um->priv->modified_action = INVALID; | |
| 818 | |
| 819 gtk_source_undo_action_free(action); | |
| 820 | |
| 821 um->priv->actions = g_list_delete_link(um->priv->actions, | |
| 822 um->priv->actions); | |
| 823 | |
| 824 if(um->priv->actions == NULL) | |
| 825 return; | |
| 826 } | |
| 827 } | |
| 828 | |
| 829 static void | |
| 830 gtk_source_undo_manager_check_list_size(GtkSourceUndoManager *um) { | |
| 831 gint undo_levels; | |
| 832 | |
| 833 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 834 g_return_if_fail(um->priv != NULL); | |
| 835 | |
| 836 undo_levels = gtk_source_undo_manager_get_max_undo_levels(um); | |
| 837 | |
| 838 if(undo_levels < 1) | |
| 839 return; | |
| 840 | |
| 841 if(um->priv->num_of_groups > undo_levels) | |
| 842 { | |
| 843 GtkSourceUndoAction *undo_action; | |
| 844 GList *last; | |
| 845 | |
| 846 last = g_list_last(um->priv->actions); | |
| 847 undo_action =(GtkSourceUndoAction*) last->data; | |
| 848 | |
| 849 do | |
| 850 { | |
| 851 GList *tmp; | |
| 852 | |
| 853 if(undo_action->order_in_group == 1) | |
| 854 --um->priv->num_of_groups; | |
| 855 um->priv->actions_in_current_group = undo_action->order_in_group - 1; | |
| 856 | |
| 857 if(undo_action->modified) | |
| 858 um->priv->modified_action = INVALID; | |
| 859 | |
| 860 gtk_source_undo_action_free(undo_action); | |
| 861 | |
| 862 tmp = g_list_previous(last); | |
| 863 um->priv->actions = g_list_delete_link(um->priv->actions, last); | |
| 864 last = tmp; | |
| 865 g_return_if_fail(last != NULL); | |
| 866 | |
| 867 undo_action =(GtkSourceUndoAction*) last->data; | |
| 868 | |
| 869 } while((undo_action->order_in_group > 1) || | |
| 870 (um->priv->num_of_groups > undo_levels)); | |
| 871 } | |
| 872 } | |
| 873 | |
| 874 /** | |
| 875 * gtk_source_undo_manager_merge_action: | |
| 876 * @um: a #GtkSourceUndoManager. | |
| 877 * @undo_action: a #GtkSourceUndoAction. | |
| 878 * | |
| 879 * This function tries to merge the undo action at the top of | |
| 880 * the stack with a new undo action. So when we undo for example | |
| 881 * typing, we can undo the whole word and not each letter by itself. | |
| 882 * | |
| 883 * Return Value: %TRUE is merge was successful, %FALSE otherwise. | |
| 884 **/ | |
| 885 static gboolean | |
| 886 gtk_source_undo_manager_merge_action(GtkSourceUndoManager *um, | |
| 887 const GtkSourceUndoAction *undo_action) { | |
| 888 GtkSourceUndoAction *last_action; | |
| 889 | |
| 890 g_return_val_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um), FALSE); | |
| 891 g_return_val_if_fail(um->priv != NULL, FALSE); | |
| 892 | |
| 893 if(um->priv->actions == NULL) | |
| 894 return FALSE; | |
| 895 | |
| 896 last_action =(GtkSourceUndoAction*) g_list_nth_data(um->priv->actions, 0); | |
| 897 | |
| 898 if(!last_action->mergeable) | |
| 899 return FALSE; | |
| 900 | |
| 901 if((!undo_action->mergeable) || | |
| 902 (undo_action->action_type != last_action->action_type)) | |
| 903 { | |
| 904 last_action->mergeable = FALSE; | |
| 905 return FALSE; | |
| 906 } | |
| 907 | |
| 908 if(undo_action->action_type == GTK_SOURCE_UNDO_ACTION_DELETE) | |
| 909 { | |
| 910 if((last_action->action.delete.forward != undo_action->action.delete.forward
) || | |
| 911 ((last_action->action.delete.start != undo_action->action.delete.start) &
& | |
| 912 (last_action->action.delete.start != undo_action->action.delete.end))) | |
| 913 { | |
| 914 last_action->mergeable = FALSE; | |
| 915 return FALSE; | |
| 916 } | |
| 917 | |
| 918 if(last_action->action.delete.start == undo_action->action.delete.start) | |
| 919 { | |
| 920 gchar *str; | |
| 921 | |
| 922 #define L (last_action->action.delete.end - last_action->action.delete.start - 1
) | |
| 923 #define g_utf8_get_char_at(p,i) g_utf8_get_char(g_utf8_offset_to_pointer((p),(i)
)) | |
| 924 | |
| 925 /* Deleted with the delete key */ | |
| 926 if((g_utf8_get_char(undo_action->action.delete.text) != ' ') && | |
| 927 (g_utf8_get_char(undo_action->action.delete.text) != '\t') && | |
| 928 ((g_utf8_get_char_at(last_action->action.delete.text,
L) == ' ') || | |
| 929 (g_utf8_get_char_at(last_action->action.delete.text, L) == '\t'))) | |
| 930 { | |
| 931 last_action->mergeable = FALSE; | |
| 932 return FALSE; | |
| 933 } | |
| 934 | |
| 935 str = g_strdup_printf("%s%s", last_action->action.delete.text, | |
| 936 undo_action->action.delete.text); | |
| 937 | |
| 938 g_free(last_action->action.delete.text); | |
| 939 last_action->action.delete.end +=(undo_action->action.delete.end - | |
| 940 undo_action->action.delete.start); | |
| 941 last_action->action.delete.text = str; | |
| 942 } | |
| 943 else | |
| 944 { | |
| 945 gchar *str; | |
| 946 | |
| 947 /* Deleted with the backspace key */ | |
| 948 if((g_utf8_get_char(undo_action->action.delete.text) != ' ') && | |
| 949 (g_utf8_get_char(undo_action->action.delete.text) != '\t') && | |
| 950 ((g_utf8_get_char(last_action->action.delete.text) ==
' ') || | |
| 951 (g_utf8_get_char(last_action->action.delete.text) == '\t'))) | |
| 952 { | |
| 953 last_action->mergeable = FALSE; | |
| 954 return FALSE; | |
| 955 } | |
| 956 | |
| 957 str = g_strdup_printf("%s%s", undo_action->action.delete.text, | |
| 958 last_action->action.delete.text); | |
| 959 | |
| 960 g_free(last_action->action.delete.text); | |
| 961 last_action->action.delete.start = undo_action->action.delete.start; | |
| 962 last_action->action.delete.text = str; | |
| 963 } | |
| 964 } | |
| 965 else if(undo_action->action_type == GTK_SOURCE_UNDO_ACTION_INSERT) | |
| 966 { | |
| 967 gchar* str; | |
| 968 | |
| 969 #define I (last_action->action.insert.chars - 1) | |
| 970 | |
| 971 if((undo_action->action.insert.pos != | |
| 972 (last_action->action.insert.pos + last_action->action.insert.chars)) |
| | |
| 973 ((g_utf8_get_char(undo_action->action.insert.text) != ' ') && | |
| 974 (g_utf8_get_char(undo_action->action.insert.text) != '\t') && | |
| 975 ((g_utf8_get_char_at(last_action->action.insert.text, I) == ' ') || | |
| 976 (g_utf8_get_char_at(last_action->action.insert.text, I) == '\t'))) | |
| 977 ) | |
| 978 { | |
| 979 last_action->mergeable = FALSE; | |
| 980 return FALSE; | |
| 981 } | |
| 982 | |
| 983 str = g_strdup_printf("%s%s", last_action->action.insert.text, | |
| 984 undo_action->action.insert.text); | |
| 985 | |
| 986 g_free(last_action->action.insert.text); | |
| 987 last_action->action.insert.length += undo_action->action.insert.length; | |
| 988 last_action->action.insert.text = str; | |
| 989 last_action->action.insert.chars += undo_action->action.insert.chars; | |
| 990 | |
| 991 } | |
| 992 else | |
| 993 /* Unknown action inside undo merge encountered */ | |
| 994 g_return_val_if_reached(TRUE); | |
| 995 | |
| 996 return TRUE; | |
| 997 } | |
| 998 | |
| 999 gint | |
| 1000 gtk_source_undo_manager_get_max_undo_levels(GtkSourceUndoManager *um) { | |
| 1001 g_return_val_if_fail(um != NULL, 0); | |
| 1002 g_return_val_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um), 0); | |
| 1003 | |
| 1004 return um->priv->max_undo_levels; | |
| 1005 } | |
| 1006 | |
| 1007 void | |
| 1008 gtk_source_undo_manager_set_max_undo_levels(GtkSourceUndoManager *um, | |
| 1009 gint max_undo_levels) { | |
| 1010 gint old_levels; | |
| 1011 | |
| 1012 g_return_if_fail(um != NULL); | |
| 1013 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 1014 | |
| 1015 old_levels = um->priv->max_undo_levels; | |
| 1016 um->priv->max_undo_levels = max_undo_levels; | |
| 1017 | |
| 1018 if(max_undo_levels < 1) | |
| 1019 return; | |
| 1020 | |
| 1021 if(old_levels > max_undo_levels) | |
| 1022 { | |
| 1023 /* strip redo actions first */ | |
| 1024 while(um->priv->next_redo >= 0 &&(um->priv->num_of_groups > max_undo_levels)
) | |
| 1025 { | |
| 1026 gtk_source_undo_manager_free_first_n_actions(um, 1); | |
| 1027 um->priv->next_redo--; | |
| 1028 } | |
| 1029 | |
| 1030 /* now remove undo actions if necessary */ | |
| 1031 gtk_source_undo_manager_check_list_size(um); | |
| 1032 | |
| 1033 /* emit "can_undo" and/or "can_redo" if appropiate */ | |
| 1034 if(um->priv->next_redo < 0 && um->priv->can_redo) | |
| 1035 { | |
| 1036 um->priv->can_redo = FALSE; | |
| 1037 g_signal_emit(G_OBJECT(um), undo_manager_signals [CAN_REDO], 0, FALSE); | |
| 1038 } | |
| 1039 | |
| 1040 if(um->priv->can_undo && | |
| 1041 um->priv->next_redo >=(gint)(g_list_length(um->priv->actions) - 1)) | |
| 1042 { | |
| 1043 um->priv->can_undo = FALSE; | |
| 1044 g_signal_emit(G_OBJECT(um), undo_manager_signals [CAN_UNDO], 0, FALSE); | |
| 1045 } | |
| 1046 } | |
| 1047 } | |
| 1048 | |
| 1049 static void | |
| 1050 gtk_source_undo_manager_modified_changed_handler(GtkTextBuffer *buffer, | |
| 1051 GtkSourceUndoManager *um) { | |
| 1052 GtkSourceUndoAction *action; | |
| 1053 GList *list; | |
| 1054 | |
| 1055 g_return_if_fail(GTK_SOURCE_IS_UNDO_MANAGER(um)); | |
| 1056 g_return_if_fail(um->priv != NULL); | |
| 1057 | |
| 1058 if(um->priv->actions == NULL) | |
| 1059 return; | |
| 1060 | |
| 1061 list = g_list_nth(um->priv->actions, um->priv->next_redo + 1); | |
| 1062 | |
| 1063 if(list != NULL) | |
| 1064 action =(GtkSourceUndoAction*) list->data; | |
| 1065 else | |
| 1066 action = NULL; | |
| 1067 | |
| 1068 if(gtk_text_buffer_get_modified(buffer) == FALSE) | |
| 1069 { | |
| 1070 if(action != NULL) | |
| 1071 action->mergeable = FALSE; | |
| 1072 | |
| 1073 if(um->priv->modified_action != NULL) | |
| 1074 { | |
| 1075 if(um->priv->modified_action != INVALID) | |
| 1076 um->priv->modified_action->modified = FALSE; | |
| 1077 | |
| 1078 um->priv->modified_action = NULL; | |
| 1079 } | |
| 1080 | |
| 1081 return; | |
| 1082 } | |
| 1083 | |
| 1084 if(action == NULL) | |
| 1085 { | |
| 1086 g_return_if_fail(um->priv->running_not_undoable_actions > 0); | |
| 1087 | |
| 1088 return; | |
| 1089 } | |
| 1090 | |
| 1091 /* gtk_text_buffer_get_modified(buffer) == TRUE */ | |
| 1092 | |
| 1093 g_return_if_fail(um->priv->modified_action == NULL); | |
| 1094 | |
| 1095 if(action->order_in_group > 1) | |
| 1096 um->priv->modified_undoing_group = TRUE; | |
| 1097 | |
| 1098 while(action->order_in_group > 1) | |
| 1099 { | |
| 1100 list = g_list_next(list); | |
| 1101 g_return_if_fail(list != NULL); | |
| 1102 | |
| 1103 action =(GtkSourceUndoAction*) list->data; | |
| 1104 g_return_if_fail(action != NULL); | |
| 1105 } | |
| 1106 | |
| 1107 action->modified = TRUE; | |
| 1108 um->priv->modified_action = action; | |
| 1109 } | |
| 1110 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 9293016:
Use undoview from deps/third_party/ (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/