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