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

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