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