Pileus Git - ~andy/gtk/blob - gtk/gtkoldeditable.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include "gdk/gdkkeysyms.h"
  30 #include "gdk/gdki18n.h"
  31 #include "gtkclipboard.h"
  32 #include "gtkoldeditable.h"
  33 #include "gtkmain.h"
  34 #include "gtkselection.h"
  35 #include "gtksignal.h"
  36
  37 #define MIN_EDITABLE_WIDTH  150
  38 #define DRAW_TIMEOUT     20
  39 #define INNER_BORDER     2
  40
  41 enum {
  42   CHANGED,
  43   INSERT_TEXT,
  44   DELETE_TEXT,
  45   /* Binding actions */
  46   ACTIVATE,
  47   SET_EDITABLE,
  48   MOVE_CURSOR,
  49   MOVE_WORD,
  50   MOVE_PAGE,
  51   MOVE_TO_ROW,
  52   MOVE_TO_COLUMN,
  53   KILL_CHAR,
  54   KILL_WORD,
  55   KILL_LINE,
  56   CUT_CLIPBOARD,
  57   COPY_CLIPBOARD,
  58   PASTE_CLIPBOARD,
  59   LAST_SIGNAL
  60 };
  61
  62 enum {
  63   ARG_0,
  64   ARG_TEXT_POSITION,
  65   ARG_EDITABLE
  66 };
  67
  68 /* values for selection info */
  69
  70 enum {
  71   TARGET_STRING,
  72   TARGET_TEXT,
  73   TARGET_COMPOUND_TEXT
  74 };
  75
  76 static void  gtk_old_editable_class_init           (GtkOldEditableClass *klass);
  77 static void  gtk_old_editable_editable_init        (GtkEditableClass    *iface);
  78 static void  gtk_old_editable_init                 (GtkOldEditable      *editable);
  79 static void  gtk_old_editable_set_arg              (GtkObject           *object,
  80                                                     GtkArg              *arg,
  81                                                     guint                arg_id);
  82 static void  gtk_old_editable_get_arg              (GtkObject           *object,
  83                                                     GtkArg              *arg,
  84                                                     guint                arg_id);
  85 static void *gtk_old_editable_get_public_chars     (GtkOldEditable      *old_editable,
  86                                                     gint                 start,
  87                                                     gint                 end);
  88
  89 static gint gtk_old_editable_selection_clear    (GtkWidget         *widget,
  90                                                  GdkEventSelection *event);
  91 static void gtk_old_editable_selection_get      (GtkWidget         *widget,
  92                                                  GtkSelectionData  *selection_data,
  93                                                  guint              info,
  94                                                  guint              time);
  95 static void gtk_old_editable_selection_received (GtkWidget         *widget,
  96                                                  GtkSelectionData  *selection_data,
  97                                                  guint              time);
  98
  99 static void  gtk_old_editable_set_selection        (GtkOldEditable      *old_editable,
 100                                                     gint                 start,
 101                                                     gint                 end);
 102
 103 static void gtk_old_editable_real_set_editable    (GtkOldEditable *old_editable,
 104                                                    gboolean        is_editable);
 105 static void gtk_old_editable_real_cut_clipboard   (GtkOldEditable *old_editable);
 106 static void gtk_old_editable_real_copy_clipboard  (GtkOldEditable *old_editable);
 107 static void gtk_old_editable_real_paste_clipboard (GtkOldEditable *old_editable);
 108
 109 static void     gtk_old_editable_insert_text         (GtkEditable *editable,
 110                                                       const gchar *new_text,
 111                                                       gint         new_text_length,
 112                                                       gint        *position);
 113 static void     gtk_old_editable_delete_text         (GtkEditable *editable,
 114                                                       gint         start_pos,
 115                                                       gint         end_pos);
 116 static gchar *  gtk_old_editable_get_chars           (GtkEditable *editable,
 117                                                       gint         start,
 118                                                       gint         end);
 119 static void     gtk_old_editable_set_selection_bounds (GtkEditable *editable,
 120                                                        gint         start,
 121                                                        gint         end);
 122 static gboolean gtk_old_editable_get_selection_bounds (GtkEditable *editable,
 123                                                        gint        *start,
 124                                                        gint        *end);
 125 static void     gtk_old_editable_set_position        (GtkEditable *editable,
 126                                                       gint         position);
 127 static gint     gtk_old_editable_get_position        (GtkEditable *editable);
 128
 129 static GtkWidgetClass *parent_class = NULL;
 130 static guint editable_signals[LAST_SIGNAL] = { 0 };
 131
 132 GtkType
 133 gtk_old_editable_get_type (void)
 134 {
 135   static GtkType old_editable_type = 0;
 136
 137   if (!old_editable_type)
 138     {
 139       static const GtkTypeInfo old_editable_info =
 140       {
 141         "GtkOldEditable",
 142         sizeof (GtkOldEditable),
 143         sizeof (GtkOldEditableClass),
 144         (GtkClassInitFunc) gtk_old_editable_class_init,
 145         (GtkObjectInitFunc) gtk_old_editable_init,
 146         /* reserved_1 */ NULL,
 147         /* reserved_2 */ NULL,
 148         (GtkClassInitFunc) NULL,
 149       };
 150
 151       static const GInterfaceInfo editable_info =
 152       {
 153         (GInterfaceInitFunc) gtk_old_editable_editable_init,     /* interface_init */
 154         NULL,                                                    /* interface_finalize */
 155         NULL                                                     /* interface_data */
 156       };
 157
 158       old_editable_type = gtk_type_unique (GTK_TYPE_WIDGET, &old_editable_info);
 159       g_type_add_interface_static (old_editable_type,
 160                                    GTK_TYPE_EDITABLE,
 161                                    &editable_info);
 162     }
 163
 164   return old_editable_type;
 165 }
 166
 167 static void
 168 gtk_old_editable_class_init (GtkOldEditableClass *class)
 169 {
 170   GtkObjectClass *object_class;
 171   GtkWidgetClass *widget_class;
 172
 173   object_class = (GtkObjectClass*) class;
 174   widget_class = (GtkWidgetClass*) class;
 175
 176   parent_class = gtk_type_class (GTK_TYPE_WIDGET);
 177
 178   object_class->set_arg = gtk_old_editable_set_arg;
 179   object_class->get_arg = gtk_old_editable_get_arg;
 180
 181   widget_class->selection_clear_event = gtk_old_editable_selection_clear;
 182   widget_class->selection_received = gtk_old_editable_selection_received;
 183   widget_class->selection_get = gtk_old_editable_selection_get;
 184
 185   class->insert_text = NULL;
 186   class->delete_text = NULL;
 187
 188   class->activate = NULL;
 189   class->set_editable = gtk_old_editable_real_set_editable;
 190
 191   class->move_cursor = NULL;
 192   class->move_word = NULL;
 193   class->move_page = NULL;
 194   class->move_to_row = NULL;
 195   class->move_to_column = NULL;
 196
 197   class->kill_char = NULL;
 198   class->kill_word = NULL;
 199   class->kill_line = NULL;
 200
 201   class->cut_clipboard = gtk_old_editable_real_cut_clipboard;
 202   class->copy_clipboard = gtk_old_editable_real_copy_clipboard;
 203   class->paste_clipboard = gtk_old_editable_real_paste_clipboard;
 204
 205   class->update_text = NULL;
 206   class->get_chars = NULL;
 207   class->set_selection = NULL;
 208   class->set_position = NULL;
 209
 210   editable_signals[CHANGED] =
 211     gtk_signal_new ("changed",
 212                     GTK_RUN_LAST,
 213                     GTK_CLASS_TYPE (object_class),
 214                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, changed),
 215                     gtk_marshal_NONE__NONE,
 216                     GTK_TYPE_NONE, 0);
 217
 218   editable_signals[INSERT_TEXT] =
 219     gtk_signal_new ("insert_text",
 220                     GTK_RUN_LAST,
 221                     GTK_CLASS_TYPE (object_class),
 222                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, insert_text),
 223                     gtk_marshal_NONE__STRING_INT_POINTER,
 224                     GTK_TYPE_NONE,
 225                     3,
 226                     GTK_TYPE_STRING,
 227                     GTK_TYPE_INT,
 228                     GTK_TYPE_POINTER);
 229
 230   editable_signals[DELETE_TEXT] =
 231     gtk_signal_new ("delete_text",
 232                     GTK_RUN_LAST,
 233                     GTK_CLASS_TYPE (object_class),
 234                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, delete_text),
 235                     gtk_marshal_NONE__INT_INT,
 236                     GTK_TYPE_NONE,
 237                     2,
 238                     GTK_TYPE_INT,
 239                     GTK_TYPE_INT);
 240
 241   editable_signals[ACTIVATE] =
 242     gtk_signal_new ("activate",
 243                     GTK_RUN_LAST | GTK_RUN_ACTION,
 244                     GTK_CLASS_TYPE (object_class),
 245                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, activate),
 246                     gtk_marshal_NONE__NONE,
 247                     GTK_TYPE_NONE, 0);
 248   widget_class->activate_signal = editable_signals[ACTIVATE];
 249
 250   editable_signals[SET_EDITABLE] =
 251     gtk_signal_new ("set-editable",
 252                     GTK_RUN_LAST | GTK_RUN_ACTION,
 253                     GTK_CLASS_TYPE (object_class),
 254                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, set_editable),
 255                     gtk_marshal_NONE__BOOL,
 256                     GTK_TYPE_NONE, 1,
 257                     GTK_TYPE_BOOL);
 258
 259   editable_signals[MOVE_CURSOR] =
 260     gtk_signal_new ("move_cursor",
 261                     GTK_RUN_LAST | GTK_RUN_ACTION,
 262                     GTK_CLASS_TYPE (object_class),
 263                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_cursor),
 264                     gtk_marshal_NONE__INT_INT,
 265                     GTK_TYPE_NONE, 2,
 266                     GTK_TYPE_INT,
 267                     GTK_TYPE_INT);
 268
 269   editable_signals[MOVE_WORD] =
 270     gtk_signal_new ("move_word",
 271                     GTK_RUN_LAST | GTK_RUN_ACTION,
 272                     GTK_CLASS_TYPE (object_class),
 273                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_word),
 274                     gtk_marshal_NONE__INT,
 275                     GTK_TYPE_NONE, 1,
 276                     GTK_TYPE_INT);
 277
 278   editable_signals[MOVE_PAGE] =
 279     gtk_signal_new ("move_page",
 280                     GTK_RUN_LAST | GTK_RUN_ACTION,
 281                     GTK_CLASS_TYPE (object_class),
 282                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_page),
 283                     gtk_marshal_NONE__INT_INT,
 284                     GTK_TYPE_NONE, 2,
 285                     GTK_TYPE_INT,
 286                     GTK_TYPE_INT);
 287
 288   editable_signals[MOVE_TO_ROW] =
 289     gtk_signal_new ("move_to_row",
 290                     GTK_RUN_LAST | GTK_RUN_ACTION,
 291                     GTK_CLASS_TYPE (object_class),
 292                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_to_row),
 293                     gtk_marshal_NONE__INT,
 294                     GTK_TYPE_NONE, 1,
 295                     GTK_TYPE_INT);
 296
 297   editable_signals[MOVE_TO_COLUMN] =
 298     gtk_signal_new ("move_to_column",
 299                     GTK_RUN_LAST | GTK_RUN_ACTION,
 300                     GTK_CLASS_TYPE (object_class),
 301                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_to_column),
 302                     gtk_marshal_NONE__INT,
 303                     GTK_TYPE_NONE, 1,
 304                     GTK_TYPE_INT);
 305
 306   editable_signals[KILL_CHAR] =
 307     gtk_signal_new ("kill_char",
 308                     GTK_RUN_LAST | GTK_RUN_ACTION,
 309                     GTK_CLASS_TYPE (object_class),
 310                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, kill_char),
 311                     gtk_marshal_NONE__INT,
 312                     GTK_TYPE_NONE, 1,
 313                     GTK_TYPE_INT);
 314
 315   editable_signals[KILL_WORD] =
 316     gtk_signal_new ("kill_word",
 317                     GTK_RUN_LAST | GTK_RUN_ACTION,
 318                     GTK_CLASS_TYPE (object_class),
 319                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, kill_word),
 320                     gtk_marshal_NONE__INT,
 321                     GTK_TYPE_NONE, 1,
 322                     GTK_TYPE_INT);
 323
 324   editable_signals[KILL_LINE] =
 325     gtk_signal_new ("kill_line",
 326                     GTK_RUN_LAST | GTK_RUN_ACTION,
 327                     GTK_CLASS_TYPE (object_class),
 328                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, kill_line),
 329                     gtk_marshal_NONE__INT,
 330                     GTK_TYPE_NONE, 1,
 331                     GTK_TYPE_INT);
 332
 333   editable_signals[CUT_CLIPBOARD] =
 334     gtk_signal_new ("cut_clipboard",
 335                     GTK_RUN_LAST | GTK_RUN_ACTION,
 336                     GTK_CLASS_TYPE (object_class),
 337                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, cut_clipboard),
 338                     gtk_marshal_NONE__NONE,
 339                     GTK_TYPE_NONE, 0);
 340
 341   editable_signals[COPY_CLIPBOARD] =
 342     gtk_signal_new ("copy_clipboard",
 343                     GTK_RUN_LAST | GTK_RUN_ACTION,
 344                     GTK_CLASS_TYPE (object_class),
 345                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, copy_clipboard),
 346                     gtk_marshal_NONE__NONE,
 347                     GTK_TYPE_NONE, 0);
 348
 349   editable_signals[PASTE_CLIPBOARD] =
 350     gtk_signal_new ("paste_clipboard",
 351                     GTK_RUN_LAST | GTK_RUN_ACTION,
 352                     GTK_CLASS_TYPE (object_class),
 353                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, paste_clipboard),
 354                     gtk_marshal_NONE__NONE,
 355                     GTK_TYPE_NONE, 0);
 356
 357   gtk_object_add_arg_type ("GtkOldEditable::text_position", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_TEXT_POSITION);
 358   gtk_object_add_arg_type ("GtkOldEditable::editable", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_EDITABLE);
 359 }
 360
 361 static void
 362 gtk_old_editable_editable_init (GtkEditableClass *iface)
 363 {
 364   iface->insert_text = gtk_old_editable_insert_text;
 365   iface->delete_text = gtk_old_editable_delete_text;
 366   iface->get_chars = gtk_old_editable_get_chars;
 367   iface->set_selection_bounds = gtk_old_editable_set_selection_bounds;
 368   iface->get_selection_bounds = gtk_old_editable_get_selection_bounds;
 369   iface->set_position = gtk_old_editable_set_position;
 370   iface->get_position = gtk_old_editable_get_position;
 371 }
 372
 373 static void
 374 gtk_old_editable_set_arg (GtkObject *object,
 375                           GtkArg    *arg,
 376                           guint      arg_id)
 377 {
 378   GtkEditable *editable = GTK_EDITABLE (object);
 379
 380   switch (arg_id)
 381     {
 382     case ARG_TEXT_POSITION:
 383       gtk_editable_set_position (editable, GTK_VALUE_INT (*arg));
 384       break;
 385     case ARG_EDITABLE:
 386       gtk_signal_emit (object, editable_signals[SET_EDITABLE],
 387                        GTK_VALUE_BOOL (*arg) != FALSE);
 388       break;
 389     default:
 390       break;
 391     }
 392 }
 393
 394 static void
 395 gtk_old_editable_get_arg (GtkObject *object,
 396                           GtkArg    *arg,
 397                           guint      arg_id)
 398 {
 399   GtkOldEditable *old_editable;
 400
 401   old_editable = GTK_OLD_EDITABLE (object);
 402
 403   switch (arg_id)
 404     {
 405     case ARG_TEXT_POSITION:
 406       GTK_VALUE_INT (*arg) = old_editable->current_pos;
 407       break;
 408     case ARG_EDITABLE:
 409       GTK_VALUE_BOOL (*arg) = old_editable->editable;
 410       break;
 411     default:
 412       arg->type = GTK_TYPE_INVALID;
 413       break;
 414     }
 415 }
 416
 417 static void
 418 gtk_old_editable_init (GtkOldEditable *old_editable)
 419 {
 420   static const GtkTargetEntry targets[] = {
 421     { "UTF8_STRING", 0, 0 },
 422     { "STRING", 0, 0 },
 423     { "TEXT",   0, 0 },
 424     { "COMPOUND_TEXT", 0, 0 }
 425   };
 426
 427   GTK_WIDGET_SET_FLAGS (old_editable, GTK_CAN_FOCUS);
 428
 429   old_editable->selection_start_pos = 0;
 430   old_editable->selection_end_pos = 0;
 431   old_editable->has_selection = FALSE;
 432   old_editable->editable = 1;
 433   old_editable->visible = 1;
 434   old_editable->clipboard_text = NULL;
 435
 436 #ifdef USE_XIM
 437   old_editable->ic = NULL;
 438 #endif
 439
 440   gtk_selection_add_targets (GTK_WIDGET (old_editable), GDK_SELECTION_PRIMARY,
 441                              targets, G_N_ELEMENTS (targets));
 442 }
 443
 444 static void
 445 gtk_old_editable_insert_text (GtkEditable *editable,
 446                               const gchar *new_text,
 447                               gint         new_text_length,
 448                               gint        *position)
 449 {
 450   gchar buf[64];
 451   gchar *text;
 452
 453   gtk_widget_ref (GTK_WIDGET (editable));
 454
 455   if (new_text_length <= 63)
 456     text = buf;
 457   else
 458     text = g_new (gchar, new_text_length + 1);
 459
 460   text[new_text_length] = '\0';
 461   strncpy (text, new_text, new_text_length);
 462
 463   gtk_signal_emit (GTK_OBJECT (editable), editable_signals[INSERT_TEXT], text, new_text_length, position);
 464   gtk_signal_emit (GTK_OBJECT (editable), editable_signals[CHANGED]);
 465
 466   if (new_text_length > 63)
 467     g_free (text);
 468
 469   gtk_widget_unref (GTK_WIDGET (editable));
 470 }
 471
 472 static void
 473 gtk_old_editable_delete_text (GtkEditable *editable,
 474                               gint         start_pos,
 475                               gint         end_pos)
 476 {
 477   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (editable);
 478
 479   gtk_widget_ref (GTK_WIDGET (old_editable));
 480
 481   gtk_signal_emit (GTK_OBJECT (old_editable), editable_signals[DELETE_TEXT], start_pos, end_pos);
 482   gtk_signal_emit (GTK_OBJECT (old_editable), editable_signals[CHANGED]);
 483
 484   if (old_editable->selection_start_pos == old_editable->selection_end_pos &&
 485       old_editable->has_selection)
 486     gtk_old_editable_claim_selection (old_editable, FALSE, GDK_CURRENT_TIME);
 487
 488   gtk_widget_unref (GTK_WIDGET (old_editable));
 489 }
 490
 491 static void
 492 gtk_old_editable_update_text (GtkOldEditable *old_editable,
 493                               gint            start_pos,
 494                               gint            end_pos)
 495 {
 496   GtkOldEditableClass *klass = GTK_OLD_EDITABLE_GET_CLASS (old_editable);
 497   klass->update_text (GTK_OLD_EDITABLE (old_editable), start_pos, end_pos);
 498 }
 499
 500 static gchar *
 501 gtk_old_editable_get_chars  (GtkEditable      *editable,
 502                              gint              start,
 503                              gint              end)
 504 {
 505   GtkOldEditableClass *klass = GTK_OLD_EDITABLE_GET_CLASS (editable);
 506   return klass->get_chars (GTK_OLD_EDITABLE (editable), start, end);
 507 }
 508
 509 /*
 510  * Like gtk_editable_get_chars, but if the editable is not
 511  * visible, return asterisks; also convert result to UTF-8.
 512  */
 513 static void *
 514 gtk_old_editable_get_public_chars (GtkOldEditable   *old_editable,
 515                                    gint              start,
 516                                    gint              end)
 517 {
 518   gchar *str = NULL;
 519   gchar *charset;
 520   gboolean need_conversion = !g_get_charset (&charset);
 521
 522   if (old_editable->visible)
 523     {
 524       GError *error;
 525       gchar *tmp = gtk_editable_get_chars (GTK_EDITABLE (old_editable), start, end);
 526
 527       if (need_conversion)
 528         {
 529           str = g_convert (tmp, -1,
 530                            "UTF-8", charset,
 531                            NULL, NULL, &error);
 532
 533           if (!str)
 534             {
 535               g_warning ("Cannot convert text from charset to UTF-8 %s: %s", charset, error->message);
 536               g_error_free (error);
 537             }
 538
 539           g_free (tmp);
 540         }
 541       else
 542         str = tmp;
 543     }
 544   else
 545     {
 546       gint i;
 547       gint nchars = end - start;
 548
 549       if (nchars < 0)
 550         nchars = -nchars;
 551
 552       str = g_new (gchar, nchars + 1);
 553       for (i = 0; i<nchars; i++)
 554         str[i] = '*';
 555       str[i] = '\0';
 556     }
 557
 558   return str;
 559 }
 560
 561 static void
 562 gtk_old_editable_set_selection (GtkOldEditable *old_editable,
 563                                 gint            start_pos,
 564                                 gint            end_pos)
 565 {
 566   GtkOldEditableClass *klass = GTK_OLD_EDITABLE_GET_CLASS (old_editable);
 567   klass->set_selection (old_editable, start_pos, end_pos);
 568 }
 569
 570 static void
 571 gtk_old_editable_set_position (GtkEditable *editable,
 572                                gint            position)
 573 {
 574   GtkOldEditableClass *klass = GTK_OLD_EDITABLE_GET_CLASS (editable);
 575
 576   klass->set_position (GTK_OLD_EDITABLE (editable), position);
 577 }
 578
 579 static gint
 580 gtk_old_editable_get_position (GtkEditable *editable)
 581 {
 582   return GTK_OLD_EDITABLE (editable)->current_pos;
 583 }
 584
 585 static gint
 586 gtk_old_editable_selection_clear (GtkWidget         *widget,
 587                                   GdkEventSelection *event)
 588 {
 589   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
 590
 591   /* Let the selection handling code know that the selection
 592    * has been changed, since we've overriden the default handler */
 593   if (!gtk_selection_clear (widget, event))
 594     return FALSE;
 595
 596   if (old_editable->has_selection)
 597     {
 598       old_editable->has_selection = FALSE;
 599       gtk_old_editable_update_text (old_editable, old_editable->selection_start_pos,
 600                                     old_editable->selection_end_pos);
 601     }
 602
 603   return TRUE;
 604 }
 605
 606 static void
 607 gtk_old_editable_selection_get (GtkWidget        *widget,
 608                                 GtkSelectionData *selection_data,
 609                                 guint             info,
 610                                 guint             time)
 611 {
 612   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
 613   gint selection_start_pos;
 614   gint selection_end_pos;
 615
 616   gchar *str;
 617
 618   selection_start_pos = MIN (old_editable->selection_start_pos, old_editable->selection_end_pos);
 619   selection_end_pos = MAX (old_editable->selection_start_pos, old_editable->selection_end_pos);
 620
 621   str = gtk_old_editable_get_public_chars (old_editable,
 622                                            selection_start_pos,
 623                                            selection_end_pos);
 624
 625   if (str)
 626     {
 627       gtk_selection_data_set_text (selection_data, str);
 628       g_free (str);
 629     }
 630 }
 631
 632 static void
 633 gtk_old_editable_paste_received (GtkOldEditable *old_editable,
 634                                  const gchar    *text,
 635                                  gboolean        is_clipboard)
 636 {
 637   const gchar *str = NULL;
 638   gchar *charset;
 639   gboolean need_conversion = FALSE;
 640
 641   if (text)
 642     {
 643       GError *error;
 644
 645       need_conversion = !g_get_charset (&charset);
 646
 647       if (need_conversion)
 648         {
 649           str = g_convert_with_fallback (text, -1,
 650                                          charset, "UTF-8", NULL,
 651                                          NULL, NULL, &error);
 652           if (!str)
 653             {
 654               g_warning ("Cannot convert text from UTF-8 to %s: %s",
 655                          charset, error->message);
 656               g_error_free (error);
 657               return;
 658             }
 659         }
 660       else
 661         str = text;
 662     }
 663
 664   if (str)
 665     {
 666       gboolean reselect;
 667       gint old_pos;
 668       gint tmp_pos;
 669
 670       reselect = FALSE;
 671
 672       if ((old_editable->selection_start_pos != old_editable->selection_end_pos) &&
 673           (!old_editable->has_selection || is_clipboard))
 674         {
 675           reselect = TRUE;
 676
 677           /* Don't want to call gtk_editable_delete_selection here if we are going
 678            * to reclaim the selection to avoid extra server traffic */
 679           if (old_editable->has_selection)
 680             {
 681               gtk_editable_delete_text (GTK_EDITABLE (old_editable),
 682                                         MIN (old_editable->selection_start_pos, old_editable->selection_end_pos),
 683                                         MAX (old_editable->selection_start_pos, old_editable->selection_end_pos));
 684             }
 685           else
 686             gtk_editable_delete_selection (GTK_EDITABLE (old_editable));
 687         }
 688
 689       tmp_pos = old_pos = old_editable->current_pos;
 690
 691       gtk_editable_insert_text (GTK_EDITABLE (old_editable), str, -1, &tmp_pos);
 692
 693       if (reselect)
 694         gtk_old_editable_set_selection (old_editable, old_pos, old_editable->current_pos);
 695
 696       if (str && str != text)
 697         g_free ((gchar *) str);
 698     }
 699 }
 700
 701 static void
 702 gtk_old_editable_selection_received  (GtkWidget         *widget,
 703                                       GtkSelectionData  *selection_data,
 704                                       guint              time)
 705 {
 706   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
 707
 708   gchar *text = gtk_selection_data_get_text (selection_data);
 709
 710   if (!text)
 711     {
 712       /* If we asked for UTF8 and didn't get it, try text; if we asked
 713        * for text and didn't get it, try string.  If we asked for
 714        * anything else and didn't get it, give up.
 715        */
 716       if (selection_data->target == gdk_atom_intern ("UTF8_STRING", FALSE))
 717         {
 718           gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
 719                                  gdk_atom_intern ("TEXT", FALSE),
 720                                  time);
 721           return;
 722         }
 723       else if (selection_data->target == gdk_atom_intern ("TEXT", FALSE))
 724         {
 725           gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
 726                                  GDK_TARGET_STRING,
 727                                  time);
 728           return;
 729         }
 730     }
 731
 732   if (text)
 733     {
 734       gtk_old_editable_paste_received (old_editable, text, FALSE);
 735       g_free (text);
 736     }
 737 }
 738
 739 static void
 740 old_editable_text_received_cb (GtkClipboard *clipboard,
 741                                const gchar  *text,
 742                                gpointer      data)
 743 {
 744   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (data);
 745
 746   gtk_old_editable_paste_received (old_editable, text, TRUE);
 747   g_object_unref (G_OBJECT (old_editable));
 748 }
 749
 750 void
 751 gtk_old_editable_claim_selection (GtkOldEditable *old_editable,
 752                                   gboolean        claim,
 753                                   guint32         time)
 754 {
 755   g_return_if_fail (old_editable != NULL);
 756   g_return_if_fail (GTK_IS_OLD_EDITABLE (old_editable));
 757   g_return_if_fail (GTK_WIDGET_REALIZED (old_editable));
 758
 759   old_editable->has_selection = FALSE;
 760
 761   if (claim)
 762     {
 763       if (gtk_selection_owner_set (GTK_WIDGET (old_editable), GDK_SELECTION_PRIMARY, time))
 764         old_editable->has_selection = TRUE;
 765     }
 766   else
 767     {
 768       if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == GTK_WIDGET (old_editable)->window)
 769         gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, time);
 770     }
 771 }
 772
 773 static void
 774 gtk_old_editable_set_selection_bounds (GtkEditable *editable,
 775                                        gint         start,
 776                                        gint         end)
 777 {
 778   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (editable);
 779
 780   if (GTK_WIDGET_REALIZED (editable))
 781     gtk_old_editable_claim_selection (old_editable, start != end, GDK_CURRENT_TIME);
 782
 783   gtk_old_editable_set_selection (old_editable, start, end);
 784 }
 785
 786 static gboolean
 787 gtk_old_editable_get_selection_bounds (GtkEditable *editable,
 788                                        gint        *start,
 789                                        gint        *end)
 790 {
 791   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (editable);
 792
 793   *start = old_editable->selection_start_pos;
 794   *end = old_editable->selection_end_pos;
 795
 796   return (old_editable->selection_start_pos != old_editable->selection_end_pos);
 797 }
 798
 799 static void
 800 gtk_old_editable_real_set_editable (GtkOldEditable *old_editable,
 801                                     gboolean        is_editable)
 802 {
 803   is_editable = is_editable != FALSE;
 804
 805   if (old_editable->editable != is_editable)
 806     {
 807       old_editable->editable = is_editable;
 808       gtk_widget_queue_draw (GTK_WIDGET (old_editable));
 809     }
 810 }
 811
 812 static void
 813 gtk_old_editable_real_cut_clipboard (GtkOldEditable *old_editable)
 814 {
 815   gtk_old_editable_real_copy_clipboard (old_editable);
 816   gtk_editable_delete_selection (GTK_EDITABLE (old_editable));
 817 }
 818
 819 static void
 820 gtk_old_editable_real_copy_clipboard (GtkOldEditable *old_editable)
 821 {
 822   gint selection_start_pos;
 823   gint selection_end_pos;
 824
 825   selection_start_pos = MIN (old_editable->selection_start_pos, old_editable->selection_end_pos);
 826   selection_end_pos = MAX (old_editable->selection_start_pos, old_editable->selection_end_pos);
 827
 828   if (selection_start_pos != selection_end_pos)
 829     {
 830       gchar *text = gtk_old_editable_get_public_chars (old_editable,
 831                                                        selection_start_pos,
 832                                                        selection_end_pos);
 833
 834       if (text)
 835         {
 836           gtk_clipboard_set_text (gtk_clipboard_get (GDK_NONE), text, -1);
 837           g_free (text);
 838         }
 839     }
 840 }
 841
 842 static void
 843 gtk_old_editable_real_paste_clipboard (GtkOldEditable *old_editable)
 844 {
 845   g_object_ref (G_OBJECT (old_editable));
 846   gtk_clipboard_request_text (gtk_clipboard_get (GDK_NONE),
 847                               old_editable_text_received_cb, old_editable);
 848 }
 849
 850 void
 851 gtk_old_editable_changed (GtkOldEditable *old_editable)
 852 {
 853   g_return_if_fail (old_editable != NULL);
 854   g_return_if_fail (GTK_IS_OLD_EDITABLE (old_editable));
 855
 856   gtk_signal_emit (GTK_OBJECT (old_editable), editable_signals[CHANGED]);
 857 }