src/ui_tabcomp.c

   1 /*
   2  * (SLIK) SimpLIstic sKin functions
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2012 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #ifdef HAVE_CONFIG_H
  14 #  include "config.h"
  15 #endif
  16 #include "intl.h"
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <unistd.h>
  22 #include <sys/types.h>
  23 #include <dirent.h>
  24
  25 #include <gdk/gdk.h>
  26 #include <gtk/gtk.h>
  27 #include <gdk-pixbuf/gdk-pixbuf.h>
  28
  29 #include "main.h"
  30 #include "ui_tabcomp.h"
  31
  32 #include "history_list.h"
  33 #include "misc.h"       /* expand_tilde() */
  34 #include "ui_fileops.h"
  35 #include "ui_spinner.h"
  36 #include "ui_utildlg.h"
  37
  38 #include <gdk/gdkkeysyms.h> /* for key values */
  39
  40
  41 /* define this to enable a pop-up menu that shows possible matches
  42  * #define TAB_COMPLETION_ENABLE_POPUP_MENU
  43  */
  44 #define TAB_COMPLETION_ENABLE_POPUP_MENU 1
  45 #define TAB_COMP_POPUP_MAX 1000
  46
  47 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
  48 #include "ui_menu.h"
  49 #endif
  50
  51
  52 /* ----------------------------------------------------------------
  53    Tab completion routines, can be connected to any gtkentry widget
  54    using the tab_completion_add_to_entry() function.
  55    Use remove_trailing_slash() to strip the trailing G_DIR_SEPARATOR.
  56    ----------------------------------------------------------------*/
  57
  58 typedef struct _TabCompData TabCompData;
  59 struct _TabCompData
  60 {
  61         GtkWidget *entry;
  62         gchar *dir_path;
  63         GList *file_list;
  64         void (*enter_func)(const gchar *, gpointer);
  65         void (*tab_func)(const gchar *, gpointer);
  66         void (*tab_append_func)(const gchar *, gpointer, gint);
  67
  68         gpointer enter_data;
  69         gpointer tab_data;
  70         gpointer tab_append_data;
  71
  72         GtkWidget *combo;
  73         gboolean has_history;
  74         gchar *history_key;
  75         gint history_levels;
  76
  77         FileDialog *fd;
  78         gchar *fd_title;
  79         gboolean fd_folders_only;
  80         GtkWidget *fd_button;
  81
  82         guint choices;
  83 };
  84
  85
  86 static void tab_completion_select_show(TabCompData *td);
  87 static gint tab_completion_do(TabCompData *td);
  88
  89 static void tab_completion_free_list(TabCompData *td)
  90 {
  91         GList *list;
  92
  93         g_free(td->dir_path);
  94         td->dir_path = NULL;
  95
  96         list = td->file_list;
  97
  98         while (list)
  99                 {
 100                 g_free(list->data);
 101                 list = list->next;
 102                 }
 103
 104         g_list_free(td->file_list);
 105         td->file_list = NULL;
 106 }
 107
 108 static void tab_completion_read_dir(TabCompData *td, const gchar *path)
 109 {
 110         DIR *dp;
 111         struct dirent *dir;
 112         GList *list = NULL;
 113         gchar *pathl;
 114
 115         tab_completion_free_list(td);
 116
 117         pathl = path_from_utf8(path);
 118         dp = opendir(pathl);
 119         if (!dp)
 120                 {
 121                 /* dir not found */
 122                 g_free(pathl);
 123                 return;
 124                 }
 125         while ((dir = readdir(dp)) != NULL)
 126                 {
 127                 gchar *name = dir->d_name;
 128                 if (strcmp(name, ".") != 0 && strcmp(name, "..") != 0)
 129                         {
 130                         gchar *abspath = g_build_filename(pathl, name, NULL);
 131
 132                         if (g_file_test(abspath, G_FILE_TEST_IS_DIR))
 133                                 {
 134                                 gchar *dname = g_strconcat(name, G_DIR_SEPARATOR_S, NULL);
 135                                 list = g_list_prepend(list, path_to_utf8(dname));
 136                                 g_free(dname);
 137                                 }
 138                         else
 139                                 {
 140                                 list = g_list_prepend(list, path_to_utf8(name));
 141                                 }
 142                         g_free(abspath);
 143                         }
 144                 }
 145         closedir(dp);
 146
 147         td->dir_path = g_strdup(path);
 148         td->file_list = list;
 149         g_free(pathl);
 150 }
 151
 152 static void tab_completion_destroy(GtkWidget *widget, gpointer data)
 153 {
 154         TabCompData *td = data;
 155
 156         tab_completion_free_list(td);
 157         g_free(td->history_key);
 158
 159         if (td->fd) file_dialog_close(td->fd);
 160         g_free(td->fd_title);
 161
 162         g_free(td);
 163 }
 164
 165 static gchar *tab_completion_get_text(TabCompData *td)
 166 {
 167         gchar *text;
 168
 169         text = g_strdup(gtk_entry_get_text(GTK_ENTRY(td->entry)));
 170
 171         if (text[0] == '~')
 172                 {
 173                 gchar *t = text;
 174                 text = expand_tilde(text);
 175                 g_free(t);
 176                 }
 177
 178         return text;
 179 }
 180
 181 static gboolean tab_completion_emit_enter_signal(TabCompData *td)
 182 {
 183         gchar *text;
 184         if (!td->enter_func) return FALSE;
 185
 186         text = tab_completion_get_text(td);
 187         td->enter_func(text, td->enter_data);
 188         g_free(text);
 189
 190         return TRUE;
 191 }
 192
 193 static void tab_completion_emit_tab_signal(TabCompData *td)
 194 {
 195         gchar *text;
 196         if (!td->tab_func) return;
 197
 198         text = tab_completion_get_text(td);
 199         td->tab_func(text, td->tab_data);
 200         g_free(text);
 201 }
 202
 203 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 204 void tab_completion_iter_menu_items(GtkWidget *widget, gpointer data)
 205 {
 206         TabCompData *td = data;
 207         GtkWidget *child;
 208
 209 #if GTK_CHECK_VERSION(2,20,0)
 210         if (!gtk_widget_get_visible(widget)) return;
 211 #else
 212         if (!GTK_WIDGET_VISIBLE(widget)) return;
 213 #endif
 214
 215         child = gtk_bin_get_child(GTK_BIN(widget));
 216         if (GTK_IS_LABEL(child)) {
 217                 const gchar *text = gtk_label_get_text(GTK_LABEL(child));
 218                 const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(td->entry));
 219                 const gchar *prefix = filename_from_path(entry_text);
 220                 guint prefix_len = strlen(prefix);
 221
 222                 if (strlen(text) < prefix_len || strncmp(text, prefix, prefix_len))
 223                         {
 224                         /* Hide menu items not matching */
 225                         gtk_widget_hide(widget);
 226                         }
 227                 else
 228                         {
 229                         /* Count how many choices are left in the menu */
 230                         td->choices++;
 231                         }
 232         }
 233 }
 234
 235 static gboolean tab_completion_popup_key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
 236 {
 237         TabCompData *td = data;
 238
 239         if (event->keyval == GDK_Tab ||
 240             event->keyval == GDK_BackSpace ||
 241             (event->keyval >= 0x20 && event->keyval <= 0xFF) )
 242                 {
 243                 if (event->keyval >= 0x20 && event->keyval <= 0xFF)
 244                         {
 245                         gchar buf[2];
 246                         gint p = -1;
 247
 248                         buf[0] = event->keyval;
 249                         buf[1] = '\0';
 250                         gtk_editable_insert_text(GTK_EDITABLE(td->entry), buf, 1, &p);
 251                         gtk_editable_set_position(GTK_EDITABLE(td->entry), -1);
 252
 253                         /* Reduce the number of entries in the menu */
 254                         td->choices = 0;
 255                         gtk_container_foreach(GTK_CONTAINER(widget), tab_completion_iter_menu_items, (gpointer) td);
 256                         if (td->choices > 1) return TRUE; /* multiple choices */
 257                         if (td->choices > 0) tab_completion_do(td); /* one choice */
 258                         }
 259
 260                 /* close the menu */
 261                 gtk_menu_popdown(GTK_MENU(widget));
 262                 /* doing this does not emit the "selection done" signal, unref it ourselves */
 263 #if GTK_CHECK_VERSION(2,12,0)
 264                 g_object_unref(widget);
 265 #else
 266                 gtk_widget_unref(widget);
 267 #endif
 268                 return TRUE;
 269                 }
 270
 271         return FALSE;
 272 }
 273
 274 static void tab_completion_popup_cb(GtkWidget *widget, gpointer data)
 275 {
 276         gchar *name = data;
 277         TabCompData *td;
 278         gchar *buf;
 279
 280         td = g_object_get_data(G_OBJECT(widget), "tab_completion_data");
 281         if (!td) return;
 282
 283         buf = g_build_filename(td->dir_path, name, NULL);
 284         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 285         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 286         g_free(buf);
 287
 288         tab_completion_emit_tab_signal(td);
 289 }
 290
 291 static void tab_completion_popup_pos_cb(GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer data)
 292 {
 293         TabCompData *td = data;
 294         gint height;
 295         PangoLayout *layout;
 296         PangoRectangle strong_pos, weak_pos;
 297         gint length;
 298         gint xoffset, yoffset;
 299         GtkRequisition req;
 300         GdkScreen *screen;
 301         gint monitor_num;
 302         GdkRectangle monitor;
 303
 304         gdk_window_get_origin(td->entry->window, x, y);
 305
 306         screen = gtk_widget_get_screen(GTK_WIDGET(menu));
 307         monitor_num = gdk_screen_get_monitor_at_window(screen, td->entry->window);
 308         gdk_screen_get_monitor_geometry(screen, monitor_num, &monitor);
 309
 310         gtk_widget_size_request(GTK_WIDGET(menu), &req);
 311
 312         length = strlen(gtk_entry_get_text(GTK_ENTRY(td->entry)));
 313         gtk_entry_get_layout_offsets(GTK_ENTRY(td->entry), &xoffset, &yoffset);
 314
 315         layout = gtk_entry_get_layout(GTK_ENTRY(td->entry));
 316         pango_layout_get_cursor_pos(layout, length, &strong_pos, &weak_pos);
 317
 318         *x += strong_pos.x / PANGO_SCALE + xoffset;
 319
 320         height = MIN(td->entry->requisition.height, td->entry->allocation.height);
 321
 322         if (req.height > monitor.y + monitor.height - *y - height &&
 323             *y - monitor.y >  monitor.y + monitor.height - *y)
 324                 {
 325                 height = MIN(*y - monitor.y, req.height);
 326                 gtk_widget_set_size_request(GTK_WIDGET(menu), -1, height);
 327                 *y -= height;
 328                 }
 329         else
 330                 {
 331                 *y += height;
 332                 }
 333 }
 334
 335 static void tab_completion_popup_list(TabCompData *td, GList *list)
 336 {
 337         GtkWidget *menu;
 338         GList *work;
 339         GdkEvent *event;
 340         guint32 etime;
 341         gint ebutton;
 342         gint count = 0;
 343
 344         if (!list) return;
 345
 346 #if 0
 347         /*
 348          * well, the menu would be too long anyway...
 349          * (listing /dev causes gtk+ window allocation errors, -> too big a window)
 350          * this is why menu popups are disabled, this really should be a popup scrollable listview.
 351          */
 352         if (g_list_length(list) > 200) return;
 353 #endif
 354
 355         menu = popup_menu_short_lived();
 356
 357         work = list;
 358         while (work && count < TAB_COMP_POPUP_MAX)
 359                 {
 360                 gchar *name = work->data;
 361                 GtkWidget *item;
 362
 363                 item = menu_item_add_simple(menu, name, G_CALLBACK(tab_completion_popup_cb), name);
 364                 g_object_set_data(G_OBJECT(item), "tab_completion_data", td);
 365
 366                 work = work->next;
 367                 count++;
 368                 }
 369
 370         g_signal_connect(G_OBJECT(menu), "key_press_event",
 371                          G_CALLBACK(tab_completion_popup_key_press), td);
 372
 373         /* peek at the current event to get the time, etc. */
 374         event = gtk_get_current_event();
 375
 376         if (event && event->type == GDK_BUTTON_RELEASE)
 377                 {
 378                 ebutton = event->button.button;
 379                 }
 380         else
 381                 {
 382                 ebutton = 0;
 383                 }
 384
 385         if (event)
 386                 {
 387                 etime = gdk_event_get_time(event);
 388                 gdk_event_free(event);
 389                 }
 390         else
 391                 {
 392                 etime = 0;
 393                 }
 394
 395         gtk_menu_popup(GTK_MENU(menu), NULL, NULL,
 396                        tab_completion_popup_pos_cb, td, ebutton, etime);
 397 }
 398
 399 #ifndef CASE_SORT
 400 #define CASE_SORT strcmp
 401 #endif
 402
 403 static gint simple_sort(gconstpointer a, gconstpointer b)
 404 {
 405         return CASE_SORT((gchar *)a, (gchar *)b);
 406 }
 407
 408 #endif
 409
 410 static gboolean tab_completion_do(TabCompData *td)
 411 {
 412         const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(td->entry));
 413         const gchar *entry_file;
 414         gchar *entry_dir;
 415         gchar *ptr;
 416         gboolean home_exp = FALSE;
 417
 418         if (entry_text[0] == '\0')
 419                 {
 420                 entry_dir = g_strdup(G_DIR_SEPARATOR_S); /* FIXME: root directory win32 */
 421                 gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 422                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 423                 g_free(entry_dir);
 424                 return FALSE;
 425                 }
 426
 427         /* home dir expansion */
 428         if (entry_text[0] == '~')
 429                 {
 430                 entry_dir = expand_tilde(entry_text);
 431                 home_exp = TRUE;
 432                 }
 433         else
 434                 {
 435                 entry_dir = g_strdup(entry_text);
 436                 }
 437
 438         if (isfile(entry_dir))
 439                 {
 440                 if (home_exp)
 441                         {
 442                         gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 443                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 444                         }
 445                 g_free(entry_dir);
 446                 return home_exp;
 447                 }
 448
 449         entry_file = filename_from_path(entry_text);
 450
 451         if (isdir(entry_dir) && strcmp(entry_file, ".") != 0 && strcmp(entry_file, "..") != 0)
 452                 {
 453                 ptr = entry_dir + strlen(entry_dir) - 1;
 454                 if (ptr[0] == G_DIR_SEPARATOR)
 455                         {
 456                         if (home_exp)
 457                                 {
 458                                 gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 459                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 460                                 }
 461
 462                         tab_completion_read_dir(td, entry_dir);
 463                         td->file_list = g_list_sort(td->file_list, simple_sort);
 464                         if (td->file_list && !td->file_list->next)
 465                                 {
 466                                 gchar *buf;
 467                                 const gchar *file;
 468
 469                                 file = td->file_list->data;
 470                                 buf = g_build_filename(entry_dir, file, NULL);
 471                                 if (isdir(buf))
 472                                         {
 473                                         gchar *tmp = g_strconcat(buf, G_DIR_SEPARATOR_S, NULL);
 474                                         g_free(buf);
 475                                         buf = tmp;
 476                                         }
 477                                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 478                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 479                                 g_free(buf);
 480                                 }
 481
 482 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 483
 484                         else
 485                                 {
 486                                 tab_completion_popup_list(td, td->file_list);
 487                                 }
 488 #endif
 489
 490                         g_free(entry_dir);
 491                         return home_exp;
 492                         }
 493                 else
 494                         {
 495                         gchar *buf = g_strconcat(entry_dir, G_DIR_SEPARATOR_S, NULL);
 496                         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 497                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 498                         g_free(buf);
 499                         g_free(entry_dir);
 500                         return TRUE;
 501                         }
 502                 }
 503
 504         ptr = (gchar *)filename_from_path(entry_dir);
 505         if (ptr > entry_dir) ptr--;
 506         ptr[0] = '\0';
 507
 508         if (strlen(entry_dir) == 0)
 509                 {
 510                 g_free(entry_dir);
 511                 entry_dir = g_strdup(G_DIR_SEPARATOR_S); /* FIXME: win32 */
 512                 }
 513
 514         if (isdir(entry_dir))
 515                 {
 516                 GList *list;
 517                 GList *poss = NULL;
 518                 gint l = strlen(entry_file);
 519
 520                 if (!td->dir_path || !td->file_list || strcmp(td->dir_path, entry_dir) != 0)
 521                         {
 522                         tab_completion_read_dir(td, entry_dir);
 523                         }
 524
 525                 list = td->file_list;
 526                 while (list)
 527                         {
 528                         gchar *file = list->data;
 529                         if (strncmp(entry_file, file, l) == 0)
 530                                 {
 531                                 poss = g_list_prepend(poss, file);
 532                                 }
 533                         list = list->next;
 534                         }
 535
 536                 if (poss)
 537                         {
 538                         if (!poss->next)
 539                                 {
 540                                 gchar *file = poss->data;
 541                                 gchar *buf;
 542
 543                                 buf = g_build_filename(entry_dir, file, NULL);
 544                                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 545                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 546                                 g_free(buf);
 547                                 g_list_free(poss);
 548                                 g_free(entry_dir);
 549                                 return TRUE;
 550                                 }
 551                         else
 552                                 {
 553                                 gsize c = strlen(entry_file);
 554                                 gboolean done = FALSE;
 555                                 gchar *test_file = poss->data;
 556
 557                                 while (!done)
 558                                         {
 559                                         list = poss;
 560                                         if (!list) done = TRUE;
 561                                         while (list && !done)
 562                                                 {
 563                                                 gchar *file = list->data;
 564                                                 if (strlen(file) < c || strncmp(test_file, file, c) != 0)
 565                                                         {
 566                                                         done = TRUE;
 567                                                         }
 568                                                 list = list->next;
 569                                                 }
 570                                         c++;
 571                                         }
 572                                 c -= 2;
 573                                 if (c > 0)
 574                                         {
 575                                         gchar *file;
 576                                         gchar *buf;
 577                                         file = g_strdup(test_file);
 578                                         file[c] = '\0';
 579                                         buf = g_build_filename(entry_dir, file, NULL);
 580                                         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 581                                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 582
 583 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 584
 585                                         poss = g_list_sort(poss, simple_sort);
 586                                         tab_completion_popup_list(td, poss);
 587
 588 #endif
 589
 590                                         g_free(file);
 591                                         g_free(buf);
 592                                         g_list_free(poss);
 593                                         g_free(entry_dir);
 594                                         return TRUE;
 595                                         }
 596                                 }
 597                         g_list_free(poss);
 598                         }
 599                 }
 600
 601         g_free(entry_dir);
 602
 603         return FALSE;
 604 }
 605
 606 static gboolean tab_completion_key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
 607 {
 608         TabCompData *td = data;
 609         gboolean stop_signal = FALSE;
 610
 611         switch (event->keyval)
 612                 {
 613                 case GDK_Tab:
 614                         if (!(event->state & GDK_CONTROL_MASK))
 615                                 {
 616                                 if (tab_completion_do(td))
 617                                         {
 618                                         tab_completion_emit_tab_signal(td);
 619                                         }
 620                                 stop_signal = TRUE;
 621                                 }
 622                         break;
 623                 case GDK_Return: case GDK_KP_Enter:
 624                         if (td->fd_button &&
 625                             (event->state & GDK_CONTROL_MASK))
 626                                 {
 627                                 tab_completion_select_show(td);
 628                                 stop_signal = TRUE;
 629                                 }
 630                         else if (tab_completion_emit_enter_signal(td))
 631                                 {
 632                                 stop_signal = TRUE;
 633                                 }
 634                         break;
 635                 default:
 636                         break;
 637                 }
 638
 639         if (stop_signal) g_signal_stop_emission_by_name(G_OBJECT(widget), "key_press_event");
 640
 641         return (stop_signal);
 642 }
 643
 644 static void tab_completion_button_pressed(GtkWidget *widget, gpointer data)
 645 {
 646         TabCompData *td;
 647         GtkWidget *entry = data;
 648
 649         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 650
 651         if (!td) return;
 652
 653 #if GTK_CHECK_VERSION(2,20,0)
 654         if (!gtk_widget_has_focus(entry))
 655 #else
 656         if (!GTK_WIDGET_HAS_FOCUS(entry))
 657 #endif
 658                 {
 659                 gtk_widget_grab_focus(entry);
 660                 }
 661
 662         if (tab_completion_do(td))
 663                 {
 664                 tab_completion_emit_tab_signal(td);
 665                 }
 666 }
 667
 668 static void tab_completion_button_size_allocate(GtkWidget *button, GtkAllocation *allocation, gpointer data)
 669 {
 670         GtkWidget *parent = data;
 671
 672         if (allocation->height > parent->allocation.height)
 673                 {
 674                 GtkAllocation button_allocation;
 675
 676                 button_allocation = button->allocation;
 677                 button_allocation.height = parent->allocation.height;
 678                 button_allocation.y = parent->allocation.y +
 679                         (parent->allocation.height - parent->allocation.height) / 2;
 680                 gtk_widget_size_allocate(button, &button_allocation);
 681                 }
 682 }
 683
 684 static GtkWidget *tab_completion_create_complete_button(GtkWidget *entry, GtkWidget *parent)
 685 {
 686         GtkWidget *button;
 687         GtkWidget *icon;
 688         GdkPixbuf *pixbuf;
 689
 690         button = gtk_button_new();
 691         GTK_WIDGET_UNSET_FLAGS(button, GTK_CAN_FOCUS);
 692         g_signal_connect(G_OBJECT(button), "size_allocate",
 693                          G_CALLBACK(tab_completion_button_size_allocate), parent);
 694         g_signal_connect(G_OBJECT(button), "clicked",
 695                          G_CALLBACK(tab_completion_button_pressed), entry);
 696
 697         pixbuf = gdk_pixbuf_new_from_inline(-1, icon_tabcomp, FALSE, NULL);
 698         icon = gtk_image_new_from_pixbuf(pixbuf);
 699         g_object_unref(pixbuf);
 700
 701         gtk_container_add(GTK_CONTAINER(button), icon);
 702         gtk_widget_show(icon);
 703
 704         return button;
 705 }
 706
 707 /*
 708  *----------------------------------------------------------------------------
 709  * public interface
 710  *----------------------------------------------------------------------------
 711  */
 712
 713 GtkWidget *tab_completion_new_with_history(GtkWidget **entry, const gchar *text,
 714                                            const gchar *history_key, gint max_levels,
 715                                            void (*enter_func)(const gchar *, gpointer), gpointer data)
 716 {
 717         GtkWidget *box;
 718         GtkWidget *combo;
 719         GtkWidget *combo_entry;
 720         GtkWidget *button;
 721         GList *work;
 722         TabCompData *td;
 723         gint n = 0;
 724
 725         box = gtk_hbox_new(FALSE, 0);
 726
 727         combo = gtk_combo_box_entry_new_text();
 728         gtk_box_pack_start(GTK_BOX(box), combo, TRUE, TRUE, 0);
 729         gtk_widget_show(combo);
 730
 731         combo_entry = GTK_BIN(combo)->child;
 732 #if 0
 733         gtk_combo_set_case_sensitive(GTK_COMBO(combo), TRUE);
 734         gtk_combo_set_use_arrows(GTK_COMBO(combo), FALSE);
 735 #endif
 736
 737         button = tab_completion_create_complete_button(combo_entry, combo);
 738         gtk_box_pack_start(GTK_BOX(box), button, FALSE, FALSE, 0);
 739         gtk_widget_show(button);
 740
 741         tab_completion_add_to_entry(combo_entry, enter_func, data);
 742
 743         td = g_object_get_data(G_OBJECT(combo_entry), "tab_completion_data");
 744         if (!td) return NULL; /* this should never happen! */
 745
 746         td->combo = combo;
 747         td->has_history = TRUE;
 748         td->history_key = g_strdup(history_key);
 749         td->history_levels = max_levels;
 750
 751         work = history_list_get_by_key(td->history_key);
 752
 753         work = history_list_get_by_key(history_key);
 754         while (work)
 755                 {
 756                 gtk_combo_box_append_text(GTK_COMBO_BOX(combo), (gchar *)work->data);
 757                 work = work->next;
 758                 n++;
 759                 }
 760
 761         if (text)
 762                 {
 763                 gtk_entry_set_text(GTK_ENTRY(combo_entry), text);
 764                 }
 765         else if (n > 0)
 766                 {
 767                 gtk_combo_box_set_active(GTK_COMBO_BOX(combo), 0);
 768                 }
 769
 770         if (entry) *entry = combo_entry;
 771         return box;
 772 }
 773
 774 const gchar *tab_completion_set_to_last_history(GtkWidget *entry)
 775 {
 776         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 777         const gchar *buf;
 778
 779         if (!td || !td->has_history) return NULL;
 780
 781         buf = history_list_find_last_path_by_key(td->history_key);
 782         if (buf)
 783                 {
 784                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 785                 }
 786
 787         return buf;
 788 }
 789
 790 void tab_completion_append_to_history(GtkWidget *entry, const gchar *path)
 791 {
 792         TabCompData *td;
 793         GtkTreeModel *store;
 794         GList *work;
 795         gint n = 0;
 796
 797         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 798
 799         if (!path) return;
 800
 801         if (!td || !td->has_history) return;
 802
 803         history_list_add_to_key(td->history_key, path, td->history_levels);
 804
 805         gtk_combo_box_set_active(GTK_COMBO_BOX(td->combo), -1);
 806
 807         store = gtk_combo_box_get_model(GTK_COMBO_BOX(td->combo));
 808         gtk_list_store_clear(GTK_LIST_STORE(store));
 809
 810         work = history_list_get_by_key(td->history_key);
 811         while (work)
 812                 {
 813                 gtk_combo_box_append_text(GTK_COMBO_BOX(td->combo), (gchar *)work->data);
 814                 work = work->next;
 815                 n++;
 816                 }
 817
 818         if (td->tab_append_func) {
 819                 td->tab_append_func(path, td->tab_append_data, n);
 820         }
 821 }
 822
 823 GtkWidget *tab_completion_new(GtkWidget **entry, const gchar *text,
 824                               void (*enter_func)(const gchar *, gpointer), gpointer data)
 825 {
 826         GtkWidget *hbox;
 827         GtkWidget *button;
 828         GtkWidget *newentry;
 829
 830         hbox = gtk_hbox_new(FALSE, 0);
 831
 832         newentry = gtk_entry_new();
 833         if (text) gtk_entry_set_text(GTK_ENTRY(newentry), text);
 834         gtk_box_pack_start(GTK_BOX(hbox), newentry, TRUE, TRUE, 0);
 835         gtk_widget_show(newentry);
 836
 837         button = tab_completion_create_complete_button(newentry, newentry);
 838         gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
 839         gtk_widget_show(button);
 840
 841         tab_completion_add_to_entry(newentry, enter_func, data);
 842
 843         if (entry) *entry = newentry;
 844         return hbox;
 845 }
 846
 847 void tab_completion_add_to_entry(GtkWidget *entry, void (*enter_func)(const gchar *, gpointer), gpointer data)
 848 {
 849         TabCompData *td;
 850         if (!entry)
 851                 {
 852                 log_printf("Tab completion error: entry != NULL\n");
 853                 return;
 854                 }
 855
 856         td = g_new0(TabCompData, 1);
 857
 858         td->entry = entry;
 859         td->enter_func = enter_func;
 860         td->enter_data = data;
 861
 862         g_object_set_data(G_OBJECT(td->entry), "tab_completion_data", td);
 863
 864         g_signal_connect(G_OBJECT(entry), "key_press_event",
 865                          G_CALLBACK(tab_completion_key_pressed), td);
 866         g_signal_connect(G_OBJECT(entry), "destroy",
 867                          G_CALLBACK(tab_completion_destroy), td);
 868 }
 869
 870 void tab_completion_add_tab_func(GtkWidget *entry, void (*tab_func)(const gchar *, gpointer), gpointer data)
 871 {
 872         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 873
 874         if (!td) return;
 875
 876         td->tab_func = tab_func;
 877         td->tab_data = data;
 878 }
 879
 880 /* Add a callback function called when a new entry is appended to the list */
 881 void tab_completion_add_append_func(GtkWidget *entry, void (*tab_append_func)(const gchar *, gpointer, gint), gpointer data)
 882 {
 883         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 884
 885         if (!td) return;
 886
 887         td->tab_append_func = tab_append_func;
 888         td->tab_append_data = data;
 889 }
 890
 891 gchar *remove_trailing_slash(const gchar *path)
 892 {
 893         gint l;
 894
 895         if (!path) return NULL;
 896
 897         l = strlen(path);
 898         while (l > 1 && path[l - 1] == G_DIR_SEPARATOR) l--;
 899
 900         return g_strndup(path, l);
 901 }
 902
 903 static void tab_completion_select_cancel_cb(FileDialog *fd, gpointer data)
 904 {
 905         TabCompData *td = data;
 906
 907         td->fd = NULL;
 908         file_dialog_close(fd);
 909 }
 910
 911 static void tab_completion_select_ok_cb(FileDialog *fd, gpointer data)
 912 {
 913         TabCompData *td = data;
 914
 915         gtk_entry_set_text(GTK_ENTRY(td->entry), gtk_entry_get_text(GTK_ENTRY(fd->entry)));
 916
 917         tab_completion_select_cancel_cb(fd, data);
 918
 919         tab_completion_emit_enter_signal(td);
 920 }
 921
 922 static void tab_completion_select_show(TabCompData *td)
 923 {
 924         const gchar *title;
 925         const gchar *path;
 926
 927         if (td->fd)
 928                 {
 929                 gtk_window_present(GTK_WINDOW(GENERIC_DIALOG(td->fd)->dialog));
 930                 return;
 931                 }
 932
 933         title = (td->fd_title) ? td->fd_title : _("Select path");
 934         td->fd = file_dialog_new(title, "select_path", td->entry,
 935                                  tab_completion_select_cancel_cb, td);
 936         file_dialog_add_button(td->fd, GTK_STOCK_OK, NULL,
 937                                  tab_completion_select_ok_cb, TRUE);
 938
 939         generic_dialog_add_message(GENERIC_DIALOG(td->fd), NULL, title, NULL);
 940
 941         path = gtk_entry_get_text(GTK_ENTRY(td->entry));
 942         if (strlen(path) == 0) path = NULL;
 943         if (td->fd_folders_only)
 944                 {
 945                 file_dialog_add_path_widgets(td->fd, NULL, path, td->history_key, NULL, NULL);
 946                 }
 947         else
 948                 {
 949                 file_dialog_add_path_widgets(td->fd, NULL, path, td->history_key, "*", _("All files"));
 950                 }
 951
 952         gtk_widget_show(GENERIC_DIALOG(td->fd)->dialog);
 953 }
 954
 955 static void tab_completion_select_pressed(GtkWidget *widget, gpointer data)
 956 {
 957         TabCompData *td = data;
 958
 959         tab_completion_select_show(td);
 960 }
 961
 962 void tab_completion_add_select_button(GtkWidget *entry, const gchar *title, gboolean folders_only)
 963 {
 964         TabCompData *td;
 965         GtkWidget *parent;
 966         GtkWidget *hbox;
 967
 968         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 969
 970         if (!td) return;
 971
 972         g_free(td->fd_title);
 973         td->fd_title = g_strdup(title);
 974         td->fd_folders_only = folders_only;
 975
 976         if (td->fd_button) return;
 977
 978         parent = (td->combo) ? td->combo : td->entry;
 979
 980         hbox = gtk_widget_get_parent(parent);
 981         if (!GTK_IS_BOX(hbox)) return;
 982
 983         td->fd_button = gtk_button_new_with_label("...");
 984         g_signal_connect(G_OBJECT(td->fd_button), "size_allocate",
 985                          G_CALLBACK(tab_completion_button_size_allocate), parent);
 986         g_signal_connect(G_OBJECT(td->fd_button), "clicked",
 987                          G_CALLBACK(tab_completion_select_pressed), td);
 988
 989         gtk_box_pack_start(GTK_BOX(hbox), td->fd_button, FALSE, FALSE, 0);
 990
 991         gtk_widget_show(td->fd_button);
 992 }
 993 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */