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 <config.h>
  30 #include <string.h>
  31 #include "gdk/gdkkeysyms.h"
  32 #include "gdk/gdki18n.h"
  33 #include "gtkclipboard.h"
  34 #include "gtkoldeditable.h"
  35 #include "gtkmain.h"
  36 #include "gtkmarshalers.h"
  37 #include "gtkselection.h"
  38 #include "gtksignal.h"
  39
  40 #define MIN_EDITABLE_WIDTH  150
  41 #define DRAW_TIMEOUT     20
  42 #define INNER_BORDER     2
  43
  44 enum {
  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 GTypeInfo old_editable_info =
 140       {
 141         sizeof (GtkOldEditableClass),
 142         NULL,           /* base_init */
 143         NULL,           /* base_finalize */
 144         (GClassInitFunc) gtk_old_editable_class_init,
 145         NULL,           /* class_finalize */
 146         NULL,           /* class_data */
 147         sizeof (GtkOldEditable),
 148         0,              /* n_preallocs */
 149         (GInstanceInitFunc) gtk_old_editable_init,
 150         NULL,           /* value_table */
 151       };
 152
 153       static const GInterfaceInfo editable_info =
 154       {
 155         (GInterfaceInitFunc) gtk_old_editable_editable_init,     /* interface_init */
 156         NULL,                                                    /* interface_finalize */
 157         NULL                                                     /* interface_data */
 158       };
 159
 160       old_editable_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkOldEditable",
 161                                                   &old_editable_info, G_TYPE_FLAG_ABSTRACT);
 162       g_type_add_interface_static (old_editable_type,
 163                                    GTK_TYPE_EDITABLE,
 164                                    &editable_info);
 165     }
 166
 167   return old_editable_type;
 168 }
 169
 170 static void
 171 gtk_old_editable_class_init (GtkOldEditableClass *class)
 172 {
 173   GtkObjectClass *object_class;
 174   GtkWidgetClass *widget_class;
 175
 176   object_class = (GtkObjectClass*) class;
 177   widget_class = (GtkWidgetClass*) class;
 178
 179   parent_class = gtk_type_class (GTK_TYPE_WIDGET);
 180
 181   object_class->set_arg = gtk_old_editable_set_arg;
 182   object_class->get_arg = gtk_old_editable_get_arg;
 183
 184   widget_class->selection_clear_event = gtk_old_editable_selection_clear;
 185   widget_class->selection_received = gtk_old_editable_selection_received;
 186   widget_class->selection_get = gtk_old_editable_selection_get;
 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[ACTIVATE] =
 211     gtk_signal_new ("activate",
 212                     GTK_RUN_LAST | GTK_RUN_ACTION,
 213                     GTK_CLASS_TYPE (object_class),
 214                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, activate),
 215                     _gtk_marshal_NONE__NONE,
 216                     GTK_TYPE_NONE, 0);
 217   widget_class->activate_signal = editable_signals[ACTIVATE];
 218
 219   editable_signals[SET_EDITABLE] =
 220     gtk_signal_new ("set-editable",
 221                     GTK_RUN_LAST | GTK_RUN_ACTION,
 222                     GTK_CLASS_TYPE (object_class),
 223                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, set_editable),
 224                     _gtk_marshal_NONE__BOOLEAN,
 225                     GTK_TYPE_NONE, 1,
 226                     GTK_TYPE_BOOL);
 227
 228   editable_signals[MOVE_CURSOR] =
 229     gtk_signal_new ("move_cursor",
 230                     GTK_RUN_LAST | GTK_RUN_ACTION,
 231                     GTK_CLASS_TYPE (object_class),
 232                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_cursor),
 233                     _gtk_marshal_NONE__INT_INT,
 234                     GTK_TYPE_NONE, 2,
 235                     GTK_TYPE_INT,
 236                     GTK_TYPE_INT);
 237
 238   editable_signals[MOVE_WORD] =
 239     gtk_signal_new ("move_word",
 240                     GTK_RUN_LAST | GTK_RUN_ACTION,
 241                     GTK_CLASS_TYPE (object_class),
 242                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_word),
 243                     _gtk_marshal_NONE__INT,
 244                     GTK_TYPE_NONE, 1,
 245                     GTK_TYPE_INT);
 246
 247   editable_signals[MOVE_PAGE] =
 248     gtk_signal_new ("move_page",
 249                     GTK_RUN_LAST | GTK_RUN_ACTION,
 250                     GTK_CLASS_TYPE (object_class),
 251                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_page),
 252                     _gtk_marshal_NONE__INT_INT,
 253                     GTK_TYPE_NONE, 2,
 254                     GTK_TYPE_INT,
 255                     GTK_TYPE_INT);
 256
 257   editable_signals[MOVE_TO_ROW] =
 258     gtk_signal_new ("move_to_row",
 259                     GTK_RUN_LAST | GTK_RUN_ACTION,
 260                     GTK_CLASS_TYPE (object_class),
 261                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_to_row),
 262                     _gtk_marshal_NONE__INT,
 263                     GTK_TYPE_NONE, 1,
 264                     GTK_TYPE_INT);
 265
 266   editable_signals[MOVE_TO_COLUMN] =
 267     gtk_signal_new ("move_to_column",
 268                     GTK_RUN_LAST | GTK_RUN_ACTION,
 269                     GTK_CLASS_TYPE (object_class),
 270                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, move_to_column),
 271                     _gtk_marshal_NONE__INT,
 272                     GTK_TYPE_NONE, 1,
 273                     GTK_TYPE_INT);
 274
 275   editable_signals[KILL_CHAR] =
 276     gtk_signal_new ("kill_char",
 277                     GTK_RUN_LAST | GTK_RUN_ACTION,
 278                     GTK_CLASS_TYPE (object_class),
 279                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, kill_char),
 280                     _gtk_marshal_NONE__INT,
 281                     GTK_TYPE_NONE, 1,
 282                     GTK_TYPE_INT);
 283
 284   editable_signals[KILL_WORD] =
 285     gtk_signal_new ("kill_word",
 286                     GTK_RUN_LAST | GTK_RUN_ACTION,
 287                     GTK_CLASS_TYPE (object_class),
 288                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, kill_word),
 289                     _gtk_marshal_NONE__INT,
 290                     GTK_TYPE_NONE, 1,
 291                     GTK_TYPE_INT);
 292
 293   editable_signals[KILL_LINE] =
 294     gtk_signal_new ("kill_line",
 295                     GTK_RUN_LAST | GTK_RUN_ACTION,
 296                     GTK_CLASS_TYPE (object_class),
 297                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, kill_line),
 298                     _gtk_marshal_NONE__INT,
 299                     GTK_TYPE_NONE, 1,
 300                     GTK_TYPE_INT);
 301
 302   editable_signals[CUT_CLIPBOARD] =
 303     gtk_signal_new ("cut_clipboard",
 304                     GTK_RUN_LAST | GTK_RUN_ACTION,
 305                     GTK_CLASS_TYPE (object_class),
 306                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, cut_clipboard),
 307                     _gtk_marshal_NONE__NONE,
 308                     GTK_TYPE_NONE, 0);
 309
 310   editable_signals[COPY_CLIPBOARD] =
 311     gtk_signal_new ("copy_clipboard",
 312                     GTK_RUN_LAST | GTK_RUN_ACTION,
 313                     GTK_CLASS_TYPE (object_class),
 314                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, copy_clipboard),
 315                     _gtk_marshal_NONE__NONE,
 316                     GTK_TYPE_NONE, 0);
 317
 318   editable_signals[PASTE_CLIPBOARD] =
 319     gtk_signal_new ("paste_clipboard",
 320                     GTK_RUN_LAST | GTK_RUN_ACTION,
 321                     GTK_CLASS_TYPE (object_class),
 322                     GTK_SIGNAL_OFFSET (GtkOldEditableClass, paste_clipboard),
 323                     _gtk_marshal_NONE__NONE,
 324                     GTK_TYPE_NONE, 0);
 325
 326   gtk_object_add_arg_type ("GtkOldEditable::text_position", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_TEXT_POSITION);
 327   gtk_object_add_arg_type ("GtkOldEditable::editable", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_EDITABLE);
 328 }
 329
 330 static void
 331 gtk_old_editable_editable_init (GtkEditableClass *iface)
 332 {
 333   iface->do_insert_text = gtk_old_editable_insert_text;
 334   iface->do_delete_text = gtk_old_editable_delete_text;
 335   iface->get_chars = gtk_old_editable_get_chars;
 336   iface->set_selection_bounds = gtk_old_editable_set_selection_bounds;
 337   iface->get_selection_bounds = gtk_old_editable_get_selection_bounds;
 338   iface->set_position = gtk_old_editable_set_position;
 339   iface->get_position = gtk_old_editable_get_position;
 340 }
 341
 342 static void
 343 gtk_old_editable_set_arg (GtkObject *object,
 344                           GtkArg    *arg,
 345                           guint      arg_id)
 346 {
 347   GtkEditable *editable = GTK_EDITABLE (object);
 348
 349   switch (arg_id)
 350     {
 351     case ARG_TEXT_POSITION:
 352       gtk_editable_set_position (editable, GTK_VALUE_INT (*arg));
 353       break;
 354     case ARG_EDITABLE:
 355       gtk_signal_emit (object, editable_signals[SET_EDITABLE],
 356                        GTK_VALUE_BOOL (*arg) != FALSE);
 357       break;
 358     default:
 359       break;
 360     }
 361 }
 362
 363 static void
 364 gtk_old_editable_get_arg (GtkObject *object,
 365                           GtkArg    *arg,
 366                           guint      arg_id)
 367 {
 368   GtkOldEditable *old_editable;
 369
 370   old_editable = GTK_OLD_EDITABLE (object);
 371
 372   switch (arg_id)
 373     {
 374     case ARG_TEXT_POSITION:
 375       GTK_VALUE_INT (*arg) = old_editable->current_pos;
 376       break;
 377     case ARG_EDITABLE:
 378       GTK_VALUE_BOOL (*arg) = old_editable->editable;
 379       break;
 380     default:
 381       arg->type = GTK_TYPE_INVALID;
 382       break;
 383     }
 384 }
 385
 386 static void
 387 gtk_old_editable_init (GtkOldEditable *old_editable)
 388 {
 389   static const GtkTargetEntry targets[] = {
 390     { "UTF8_STRING", 0, 0 },
 391     { "STRING", 0, 0 },
 392     { "TEXT",   0, 0 },
 393     { "COMPOUND_TEXT", 0, 0 }
 394   };
 395
 396   GTK_WIDGET_SET_FLAGS (old_editable, GTK_CAN_FOCUS);
 397
 398   old_editable->selection_start_pos = 0;
 399   old_editable->selection_end_pos = 0;
 400   old_editable->has_selection = FALSE;
 401   old_editable->editable = 1;
 402   old_editable->visible = 1;
 403   old_editable->clipboard_text = NULL;
 404
 405   gtk_selection_add_targets (GTK_WIDGET (old_editable), GDK_SELECTION_PRIMARY,
 406                              targets, G_N_ELEMENTS (targets));
 407 }
 408
 409 static void
 410 gtk_old_editable_insert_text (GtkEditable *editable,
 411                               const gchar *new_text,
 412                               gint         new_text_length,
 413                               gint        *position)
 414 {
 415   gchar buf[64];
 416   gchar *text;
 417
 418   gtk_widget_ref (GTK_WIDGET (editable));
 419
 420   if (new_text_length <= 63)
 421     text = buf;
 422   else
 423     text = g_new (gchar, new_text_length + 1);
 424
 425   text[new_text_length] = '\0';
 426   strncpy (text, new_text, new_text_length);
 427
 428   g_signal_emit_by_name (editable, "insert_text", text, new_text_length,
 429                          position);
 430   g_signal_emit_by_name (editable, "changed");
 431
 432   if (new_text_length > 63)
 433     g_free (text);
 434
 435   gtk_widget_unref (GTK_WIDGET (editable));
 436 }
 437
 438 static void
 439 gtk_old_editable_delete_text (GtkEditable *editable,
 440                               gint         start_pos,
 441                               gint         end_pos)
 442 {
 443   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (editable);
 444
 445   gtk_widget_ref (GTK_WIDGET (old_editable));
 446
 447   g_signal_emit_by_name (editable, "delete_text", start_pos, end_pos);
 448   g_signal_emit_by_name (editable, "changed");
 449
 450   if (old_editable->selection_start_pos == old_editable->selection_end_pos &&
 451       old_editable->has_selection)
 452     gtk_old_editable_claim_selection (old_editable, FALSE, GDK_CURRENT_TIME);
 453
 454   gtk_widget_unref (GTK_WIDGET (old_editable));
 455 }
 456
 457 static void
 458 gtk_old_editable_update_text (GtkOldEditable *old_editable,
 459                               gint            start_pos,
 460                               gint            end_pos)
 461 {
 462   GtkOldEditableClass *klass = GTK_OLD_EDITABLE_GET_CLASS (old_editable);
 463   klass->update_text (GTK_OLD_EDITABLE (old_editable), start_pos, end_pos);
 464 }
 465
 466 static gchar *
 467 gtk_old_editable_get_chars  (GtkEditable      *editable,
 468                              gint              start,
 469                              gint              end)
 470 {
 471   GtkOldEditableClass *klass = GTK_OLD_EDITABLE_GET_CLASS (editable);
 472   return klass->get_chars (GTK_OLD_EDITABLE (editable), start, end);
 473 }
 474
 475 /*
 476  * Like gtk_editable_get_chars, but if the editable is not
 477  * visible, return asterisks; also convert result to UTF-8.
 478  */
 479 static void *
 480 gtk_old_editable_get_public_chars (GtkOldEditable   *old_editable,
 481                                    gint              start,
 482                                    gint              end)
 483 {
 484   gchar *str = NULL;
 485   const gchar *charset;
 486   gboolean need_conversion = !g_get_charset (&charset);
 487
 488   if (old_editable->visible)
 489     {
 490       GError *error = NULL;
 491       gchar *tmp = gtk_editable_get_chars (GTK_EDITABLE (old_editable), start, end);
 492
 493       if (need_conversion)
 494         {
 495           str = g_convert (tmp, -1,
 496                            "UTF-8", charset,
 497                            NULL, NULL, &error);
 498
 499           if (!str)
 500             {
 501               g_warning ("Cannot convert text from charset to UTF-8 %s: %s", charset, error->message);
 502               g_error_free (error);
 503             }
 504
 505           g_free (tmp);
 506         }
 507       else
 508         str = tmp;
 509     }
 510   else
 511     {
 512       gint i;
 513       gint nchars = end - start;
 514
 515       if (nchars < 0)
 516         nchars = -nchars;
 517
 518       str = g_new (gchar, nchars + 1);
 519       for (i = 0; i<nchars; i++)
 520         str[i] = '*';
 521       str[i] = '\0';
 522     }
 523
 524   return str;
 525 }
 526
 527 static void
 528 gtk_old_editable_set_selection (GtkOldEditable *old_editable,
 529                                 gint            start_pos,
 530                                 gint            end_pos)
 531 {
 532   GtkOldEditableClass *klass = GTK_OLD_EDITABLE_GET_CLASS (old_editable);
 533   klass->set_selection (old_editable, start_pos, end_pos);
 534 }
 535
 536 static void
 537 gtk_old_editable_set_position (GtkEditable *editable,
 538                                gint            position)
 539 {
 540   GtkOldEditableClass *klass = GTK_OLD_EDITABLE_GET_CLASS (editable);
 541
 542   klass->set_position (GTK_OLD_EDITABLE (editable), position);
 543 }
 544
 545 static gint
 546 gtk_old_editable_get_position (GtkEditable *editable)
 547 {
 548   return GTK_OLD_EDITABLE (editable)->current_pos;
 549 }
 550
 551 static gint
 552 gtk_old_editable_selection_clear (GtkWidget         *widget,
 553                                   GdkEventSelection *event)
 554 {
 555   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
 556
 557   /* Let the selection handling code know that the selection
 558    * has been changed, since we've overriden the default handler */
 559   if (!parent_class->selection_clear_event (widget, event))
 560     return FALSE;
 561
 562   if (old_editable->has_selection)
 563     {
 564       old_editable->has_selection = FALSE;
 565       gtk_old_editable_update_text (old_editable, old_editable->selection_start_pos,
 566                                     old_editable->selection_end_pos);
 567     }
 568
 569   return TRUE;
 570 }
 571
 572 static void
 573 gtk_old_editable_selection_get (GtkWidget        *widget,
 574                                 GtkSelectionData *selection_data,
 575                                 guint             info,
 576                                 guint             time)
 577 {
 578   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
 579   gint selection_start_pos;
 580   gint selection_end_pos;
 581
 582   gchar *str;
 583
 584   selection_start_pos = MIN (old_editable->selection_start_pos, old_editable->selection_end_pos);
 585   selection_end_pos = MAX (old_editable->selection_start_pos, old_editable->selection_end_pos);
 586
 587   str = gtk_old_editable_get_public_chars (old_editable,
 588                                            selection_start_pos,
 589                                            selection_end_pos);
 590
 591   if (str)
 592     {
 593       gtk_selection_data_set_text (selection_data, str, -1);
 594       g_free (str);
 595     }
 596 }
 597
 598 static void
 599 gtk_old_editable_paste_received (GtkOldEditable *old_editable,
 600                                  const gchar    *text,
 601                                  gboolean        is_clipboard)
 602 {
 603   const gchar *str = NULL;
 604   const gchar *charset;
 605   gboolean need_conversion = FALSE;
 606
 607   if (text)
 608     {
 609       GError *error = NULL;
 610
 611       need_conversion = !g_get_charset (&charset);
 612
 613       if (need_conversion)
 614         {
 615           str = g_convert_with_fallback (text, -1,
 616                                          charset, "UTF-8", NULL,
 617                                          NULL, NULL, &error);
 618           if (!str)
 619             {
 620               g_warning ("Cannot convert text from UTF-8 to %s: %s",
 621                          charset, error->message);
 622               g_error_free (error);
 623               return;
 624             }
 625         }
 626       else
 627         str = text;
 628     }
 629
 630   if (str)
 631     {
 632       gboolean reselect;
 633       gint old_pos;
 634       gint tmp_pos;
 635
 636       reselect = FALSE;
 637
 638       if ((old_editable->selection_start_pos != old_editable->selection_end_pos) &&
 639           (!old_editable->has_selection || is_clipboard))
 640         {
 641           reselect = TRUE;
 642
 643           /* Don't want to call gtk_editable_delete_selection here if we are going
 644            * to reclaim the selection to avoid extra server traffic */
 645           if (old_editable->has_selection)
 646             {
 647               gtk_editable_delete_text (GTK_EDITABLE (old_editable),
 648                                         MIN (old_editable->selection_start_pos, old_editable->selection_end_pos),
 649                                         MAX (old_editable->selection_start_pos, old_editable->selection_end_pos));
 650             }
 651           else
 652             gtk_editable_delete_selection (GTK_EDITABLE (old_editable));
 653         }
 654
 655       tmp_pos = old_pos = old_editable->current_pos;
 656
 657       gtk_editable_insert_text (GTK_EDITABLE (old_editable), str, -1, &tmp_pos);
 658
 659       if (reselect)
 660         gtk_old_editable_set_selection (old_editable, old_pos, old_editable->current_pos);
 661
 662       if (str && str != text)
 663         g_free ((gchar *) str);
 664     }
 665 }
 666
 667 static void
 668 gtk_old_editable_selection_received  (GtkWidget         *widget,
 669                                       GtkSelectionData  *selection_data,
 670                                       guint              time)
 671 {
 672   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (widget);
 673
 674   gchar *text = gtk_selection_data_get_text (selection_data);
 675
 676   if (!text)
 677     {
 678       /* If we asked for UTF8 and didn't get it, try text; if we asked
 679        * for text and didn't get it, try string.  If we asked for
 680        * anything else and didn't get it, give up.
 681        */
 682       if (selection_data->target == gdk_atom_intern ("UTF8_STRING", FALSE))
 683         {
 684           gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
 685                                  gdk_atom_intern ("TEXT", FALSE),
 686                                  time);
 687           return;
 688         }
 689       else if (selection_data->target == gdk_atom_intern ("TEXT", FALSE))
 690         {
 691           gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
 692                                  GDK_TARGET_STRING,
 693                                  time);
 694           return;
 695         }
 696     }
 697
 698   if (text)
 699     {
 700       gtk_old_editable_paste_received (old_editable, text, FALSE);
 701       g_free (text);
 702     }
 703 }
 704
 705 static void
 706 old_editable_text_received_cb (GtkClipboard *clipboard,
 707                                const gchar  *text,
 708                                gpointer      data)
 709 {
 710   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (data);
 711
 712   gtk_old_editable_paste_received (old_editable, text, TRUE);
 713   g_object_unref (G_OBJECT (old_editable));
 714 }
 715
 716 /**
 717  * gtk_old_editable_claim_selection:
 718  * @old_editable: a #GtkOldEditable
 719  * @claim: if %TRUE, claim ownership of the selection, if %FALSE, give
 720  *   up ownership
 721  * @time_: timestamp for this operation
 722  *
 723  * Claims or gives up ownership of the selection.
 724  */
 725 void
 726 gtk_old_editable_claim_selection (GtkOldEditable *old_editable,
 727                                   gboolean        claim,
 728                                   guint32         time)
 729 {
 730   GtkWidget *widget = GTK_WIDGET (old_editable);
 731   GdkDisplay *display = gtk_widget_get_display (widget);
 732
 733   g_return_if_fail (GTK_IS_OLD_EDITABLE (old_editable));
 734   g_return_if_fail (GTK_WIDGET_REALIZED (old_editable));
 735
 736   old_editable->has_selection = FALSE;
 737
 738   if (claim)
 739     {
 740       if (gtk_selection_owner_set_for_display (display, widget,
 741                                                GDK_SELECTION_PRIMARY, time))
 742         old_editable->has_selection = TRUE;
 743     }
 744   else
 745     {
 746       if (gdk_selection_owner_get_for_display (display, GDK_SELECTION_PRIMARY) == widget->window)
 747         gtk_selection_owner_set_for_display (display,
 748                                              NULL,
 749                                              GDK_SELECTION_PRIMARY, time);
 750     }
 751 }
 752
 753 static void
 754 gtk_old_editable_set_selection_bounds (GtkEditable *editable,
 755                                        gint         start,
 756                                        gint         end)
 757 {
 758   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (editable);
 759
 760   if (GTK_WIDGET_REALIZED (editable))
 761     gtk_old_editable_claim_selection (old_editable, start != end, GDK_CURRENT_TIME);
 762
 763   gtk_old_editable_set_selection (old_editable, start, end);
 764 }
 765
 766 static gboolean
 767 gtk_old_editable_get_selection_bounds (GtkEditable *editable,
 768                                        gint        *start,
 769                                        gint        *end)
 770 {
 771   GtkOldEditable *old_editable = GTK_OLD_EDITABLE (editable);
 772
 773   *start = old_editable->selection_start_pos;
 774   *end = old_editable->selection_end_pos;
 775
 776   return (old_editable->selection_start_pos != old_editable->selection_end_pos);
 777 }
 778
 779 static void
 780 gtk_old_editable_real_set_editable (GtkOldEditable *old_editable,
 781                                     gboolean        is_editable)
 782 {
 783   is_editable = is_editable != FALSE;
 784
 785   if (old_editable->editable != is_editable)
 786     {
 787       old_editable->editable = is_editable;
 788       gtk_widget_queue_draw (GTK_WIDGET (old_editable));
 789     }
 790 }
 791
 792 static void
 793 gtk_old_editable_real_cut_clipboard (GtkOldEditable *old_editable)
 794 {
 795   gtk_old_editable_real_copy_clipboard (old_editable);
 796   gtk_editable_delete_selection (GTK_EDITABLE (old_editable));
 797 }
 798
 799 static void
 800 gtk_old_editable_real_copy_clipboard (GtkOldEditable *old_editable)
 801 {
 802   gint selection_start_pos;
 803   gint selection_end_pos;
 804
 805   selection_start_pos = MIN (old_editable->selection_start_pos, old_editable->selection_end_pos);
 806   selection_end_pos = MAX (old_editable->selection_start_pos, old_editable->selection_end_pos);
 807
 808   if (selection_start_pos != selection_end_pos)
 809     {
 810       gchar *text = gtk_old_editable_get_public_chars (old_editable,
 811                                                        selection_start_pos,
 812                                                        selection_end_pos);
 813
 814       if (text)
 815         {
 816           GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (old_editable),
 817                                                               GDK_SELECTION_CLIPBOARD);
 818
 819           gtk_clipboard_set_text (clipboard, text, -1);
 820           g_free (text);
 821         }
 822     }
 823 }
 824
 825 static void
 826 gtk_old_editable_real_paste_clipboard (GtkOldEditable *old_editable)
 827 {
 828   GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (old_editable),
 829                                                       GDK_SELECTION_CLIPBOARD);
 830
 831   g_object_ref (G_OBJECT (old_editable));
 832   gtk_clipboard_request_text (clipboard, old_editable_text_received_cb, old_editable);
 833 }
 834
 835 /**
 836  * gtk_old_editable_changed:
 837  * @old_editable: a #GtkOldEditable
 838  *
 839  * Emits the ::changed signal on @old_editable.
 840  */
 841 void
 842 gtk_old_editable_changed (GtkOldEditable *old_editable)
 843 {
 844   g_return_if_fail (GTK_IS_OLD_EDITABLE (old_editable));
 845
 846   g_signal_emit_by_name (old_editable, "changed");
 847 }