src/ui_tabcomp.c

   1 /*
   2  * (SLIK) SimpLIstic sKin functions
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2009 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 500
  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         gint has_history;
  74         gchar *history_key;
  75         gint history_levels;
  76
  77         FileDialog *fd;
  78         gchar *fd_title;
  79         gint fd_folders_only;
  80         GtkWidget *fd_button;
  81 };
  82
  83
  84 static void tab_completion_select_show(TabCompData *td);
  85
  86 static void tab_completion_free_list(TabCompData *td)
  87 {
  88         GList *list;
  89
  90         g_free(td->dir_path);
  91         td->dir_path = NULL;
  92
  93         list = td->file_list;
  94
  95         while (list)
  96                 {
  97                 g_free(list->data);
  98                 list = list->next;
  99                 }
 100
 101         g_list_free(td->file_list);
 102         td->file_list = NULL;
 103 }
 104
 105 static void tab_completion_read_dir(TabCompData *td, const gchar *path)
 106 {
 107         DIR *dp;
 108         struct dirent *dir;
 109         GList *list = NULL;
 110         gchar *pathl;
 111
 112         tab_completion_free_list(td);
 113
 114         pathl = path_from_utf8(path);
 115         dp = opendir(pathl);
 116         g_free(pathl);
 117         if (!dp)
 118                 {
 119                 /* dir not found */
 120                 return;
 121                 }
 122         while ((dir = readdir(dp)) != NULL)
 123                 {
 124                 gchar *name = dir->d_name;
 125                 if (strcmp(name, ".") != 0 && strcmp(name, "..") != 0)
 126                         {
 127                         gchar *abspath = g_build_filename(path, name, NULL);
 128
 129                         if (isdir(abspath))
 130                                 {
 131                                 gchar *dname = g_strconcat(name, G_DIR_SEPARATOR_S, NULL);
 132                                 list = g_list_prepend(list, path_to_utf8(dname));
 133                                 g_free(dname);
 134                                 }
 135                         else
 136                                 {
 137                                 list = g_list_prepend(list, path_to_utf8(name));
 138                                 }
 139                         g_free(abspath);
 140                         }
 141                 }
 142         closedir(dp);
 143
 144         td->dir_path = g_strdup(path);
 145         td->file_list = list;
 146 }
 147
 148 static void tab_completion_destroy(GtkWidget *widget, gpointer data)
 149 {
 150         TabCompData *td = data;
 151
 152         tab_completion_free_list(td);
 153         g_free(td->history_key);
 154
 155         if (td->fd) file_dialog_close(td->fd);
 156         g_free(td->fd_title);
 157
 158         g_free(td);
 159 }
 160
 161 static gchar *tab_completion_get_text(TabCompData *td)
 162 {
 163         gchar *text;
 164
 165         text = g_strdup(gtk_entry_get_text(GTK_ENTRY(td->entry)));
 166
 167         if (text[0] == '~')
 168                 {
 169                 gchar *t = text;
 170                 text = expand_tilde(text);
 171                 g_free(t);
 172                 }
 173
 174         return text;
 175 }
 176
 177 static gint tab_completion_emit_enter_signal(TabCompData *td)
 178 {
 179         gchar *text;
 180         if (!td->enter_func) return FALSE;
 181
 182         text = tab_completion_get_text(td);
 183         td->enter_func(text, td->enter_data);
 184         g_free(text);
 185
 186         return TRUE;
 187 }
 188
 189 static void tab_completion_emit_tab_signal(TabCompData *td)
 190 {
 191         gchar *text;
 192         if (!td->tab_func) return;
 193
 194         text = tab_completion_get_text(td);
 195         td->tab_func(text, td->tab_data);
 196         g_free(text);
 197 }
 198
 199 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 200
 201 static gint tab_completion_popup_key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
 202 {
 203         TabCompData *td = data;
 204
 205         if (event->keyval == GDK_Tab ||
 206             event->keyval == GDK_BackSpace ||
 207             (event->keyval >= 0x20 && event->keyval <= 0xFF) )
 208                 {
 209                 if (event->keyval >= 0x20 && event->keyval <= 0xFF)
 210                         {
 211                         gchar buf[2];
 212                         gint p = -1;
 213
 214                         buf[0] = event->keyval;
 215                         buf[1] = '\0';
 216                         gtk_editable_insert_text(GTK_EDITABLE(td->entry), buf, 1, &p);
 217                         gtk_editable_set_position(GTK_EDITABLE(td->entry), -1);
 218                         }
 219
 220                 /*close the menu */
 221                 gtk_menu_popdown(GTK_MENU(widget));
 222                 /* doing this does not emit the "selection done" signal, unref it ourselves */
 223 #if GTK_CHECK_VERSION(2,12,0)
 224                 g_object_unref(widget);
 225 #else
 226                 gtk_widget_unref(widget);
 227 #endif
 228                 return TRUE;
 229                 }
 230
 231         return FALSE;
 232 }
 233
 234 static void tab_completion_popup_cb(GtkWidget *widget, gpointer data)
 235 {
 236         gchar *name = data;
 237         TabCompData *td;
 238         gchar *buf;
 239
 240         td = g_object_get_data(G_OBJECT(widget), "tab_completion_data");
 241         if (!td) return;
 242
 243         buf = g_build_filename(td->dir_path, name, NULL);
 244         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 245         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 246         g_free(buf);
 247
 248         tab_completion_emit_tab_signal(td);
 249 }
 250
 251 static void tab_completion_popup_pos_cb(GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer data)
 252 {
 253         TabCompData *td = data;
 254         gint height;
 255         PangoLayout *layout;
 256         PangoRectangle strong_pos, weak_pos;
 257         gint length;
 258         gint xoffset, yoffset;
 259         GtkRequisition req;
 260         GdkScreen *screen;
 261         gint monitor_num;
 262         GdkRectangle monitor;
 263
 264         gdk_window_get_origin(td->entry->window, x, y);
 265
 266         screen = gtk_widget_get_screen(GTK_WIDGET(menu));
 267         monitor_num = gdk_screen_get_monitor_at_window(screen, td->entry->window);
 268         gdk_screen_get_monitor_geometry(screen, monitor_num, &monitor);
 269
 270         gtk_widget_size_request(GTK_WIDGET(menu), &req);
 271
 272         length = strlen(gtk_entry_get_text(GTK_ENTRY(td->entry)));
 273         gtk_entry_get_layout_offsets(GTK_ENTRY(td->entry), &xoffset, &yoffset);
 274
 275         layout = gtk_entry_get_layout(GTK_ENTRY(td->entry));
 276         pango_layout_get_cursor_pos(layout, length, &strong_pos, &weak_pos);
 277
 278         *x += strong_pos.x / PANGO_SCALE + xoffset;
 279
 280         height = MIN(td->entry->requisition.height, td->entry->allocation.height);
 281
 282         if (req.height > monitor.y + monitor.height - *y - height &&
 283             *y - monitor.y >  monitor.y + monitor.height - *y)
 284                 {
 285                 height = MIN(*y - monitor.y, req.height);
 286                 gtk_widget_set_size_request(GTK_WIDGET(menu), -1, height);
 287                 *y -= height;
 288                 }
 289         else
 290                 {
 291                 *y += height;
 292                 }
 293 }
 294
 295 static void tab_completion_popup_list(TabCompData *td, GList *list)
 296 {
 297         GtkWidget *menu;
 298         GList *work;
 299         GdkEvent *event;
 300         guint32 etime;
 301         gint ebutton;
 302         gint count = 0;
 303
 304         if (!list) return;
 305
 306 #if 0
 307         /*
 308          * well, the menu would be too long anyway...
 309          * (listing /dev causes gtk+ window allocation errors, -> too big a window)
 310          * this is why menu popups are disabled, this really should be a popup scrollable listview.
 311          */
 312         if (g_list_length(list) > 200) return;
 313 #endif
 314
 315         menu = popup_menu_short_lived();
 316
 317         work = list;
 318         while (work && count < TAB_COMP_POPUP_MAX)
 319                 {
 320                 gchar *name = work->data;
 321                 GtkWidget *item;
 322
 323                 item = menu_item_add_simple(menu, name, G_CALLBACK(tab_completion_popup_cb), name);
 324                 g_object_set_data(G_OBJECT(item), "tab_completion_data", td);
 325
 326                 work = work->next;
 327                 count++;
 328                 }
 329
 330         g_signal_connect(G_OBJECT(menu), "key_press_event",
 331                          G_CALLBACK(tab_completion_popup_key_press), td);
 332
 333         /* peek at the current event to get the time, etc. */
 334         event = gtk_get_current_event();
 335
 336         if (event && event->type == GDK_BUTTON_RELEASE)
 337                 {
 338                 ebutton = event->button.button;
 339                 }
 340         else
 341                 {
 342                 ebutton = 0;
 343                 }
 344
 345         if (event)
 346                 {
 347                 etime = gdk_event_get_time(event);
 348                 gdk_event_free(event);
 349                 }
 350         else
 351                 {
 352                 etime = 0;
 353                 }
 354
 355         gtk_menu_popup(GTK_MENU(menu), NULL, NULL,
 356                        tab_completion_popup_pos_cb, td, ebutton, etime);
 357 }
 358
 359 #ifndef CASE_SORT
 360 #define CASE_SORT strcmp
 361 #endif
 362
 363 static gint simple_sort(gconstpointer a, gconstpointer b)
 364 {
 365         return CASE_SORT((gchar *)a, (gchar *)b);
 366 }
 367
 368 #endif
 369
 370 static gint tab_completion_do(TabCompData *td)
 371 {
 372         const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(td->entry));
 373         const gchar *entry_file;
 374         gchar *entry_dir;
 375         gchar *ptr;
 376         gint home_exp = FALSE;
 377
 378         /* home dir expansion */
 379         if (entry_text[0] == '~')
 380                 {
 381                 entry_dir = expand_tilde(entry_text);
 382                 home_exp = TRUE;
 383                 }
 384         else
 385                 {
 386                 entry_dir = g_strdup(entry_text);
 387                 }
 388
 389         if (isfile(entry_dir))
 390                 {
 391                 if (home_exp)
 392                         {
 393                         gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 394                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 395                         }
 396                 g_free(entry_dir);
 397                 return home_exp;
 398                 }
 399
 400         entry_file = filename_from_path(entry_text);
 401
 402         if (isdir(entry_dir) && strcmp(entry_file, ".") != 0 && strcmp(entry_file, "..") != 0)
 403                 {
 404                 ptr = entry_dir + strlen(entry_dir) - 1;
 405                 if (ptr[0] == G_DIR_SEPARATOR)
 406                         {
 407                         if (home_exp)
 408                                 {
 409                                 gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 410                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 411                                 }
 412
 413                         tab_completion_read_dir(td, entry_dir);
 414                         td->file_list = g_list_sort(td->file_list, simple_sort);
 415                         if (td->file_list && !td->file_list->next)
 416                                 {
 417                                 gchar *buf;
 418                                 const gchar *file;
 419
 420                                 file = td->file_list->data;
 421                                 buf = g_build_filename(entry_dir, file, NULL);
 422                                 if (isdir(buf))
 423                                         {
 424                                         gchar *tmp = g_strconcat(buf, G_DIR_SEPARATOR_S, NULL);
 425                                         g_free(buf);
 426                                         buf = tmp;
 427                                         }
 428                                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 429                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 430                                 g_free(buf);
 431                                 }
 432
 433 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 434
 435                         else
 436                                 {
 437                                 tab_completion_popup_list(td, td->file_list);
 438                                 }
 439 #endif
 440
 441                         g_free(entry_dir);
 442                         return home_exp;
 443                         }
 444                 else
 445                         {
 446                         gchar *buf = g_strconcat(entry_dir, G_DIR_SEPARATOR_S, NULL);
 447                         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 448                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 449                         g_free(buf);
 450                         g_free(entry_dir);
 451                         return TRUE;
 452                         }
 453                 }
 454
 455         ptr = (gchar *)filename_from_path(entry_dir);
 456         if (ptr > entry_dir) ptr--;
 457         ptr[0] = '\0';
 458
 459         if (strlen(entry_dir) == 0)
 460                 {
 461                 g_free(entry_dir);
 462                 entry_dir = g_strdup(G_DIR_SEPARATOR_S); /* FIXME: win32 */
 463                 }
 464
 465         if (isdir(entry_dir))
 466                 {
 467                 GList *list;
 468                 GList *poss = NULL;
 469                 gint l = strlen(entry_file);
 470
 471                 if (!td->dir_path || !td->file_list || strcmp(td->dir_path, entry_dir) != 0)
 472                         {
 473                         tab_completion_read_dir(td, entry_dir);
 474                         }
 475
 476                 list = td->file_list;
 477                 while (list)
 478                         {
 479                         gchar *file = list->data;
 480                         if (strncmp(entry_file, file, l) == 0)
 481                                 {
 482                                 poss = g_list_prepend(poss, file);
 483                                 }
 484                         list = list->next;
 485                         }
 486
 487                 if (poss)
 488                         {
 489                         if (!poss->next)
 490                                 {
 491                                 gchar *file = poss->data;
 492                                 gchar *buf;
 493
 494                                 buf = g_build_filename(entry_dir, file, NULL);
 495                                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 496                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 497                                 g_free(buf);
 498                                 g_list_free(poss);
 499                                 g_free(entry_dir);
 500                                 return TRUE;
 501                                 }
 502                         else
 503                                 {
 504                                 gsize c = strlen(entry_file);
 505                                 gint done = FALSE;
 506                                 gchar *test_file = poss->data;
 507
 508                                 while (!done)
 509                                         {
 510                                         list = poss;
 511                                         if (!list) done = TRUE;
 512                                         while (list && !done)
 513                                                 {
 514                                                 gchar *file = list->data;
 515                                                 if (strlen(file) < c || strncmp(test_file, file, c) != 0)
 516                                                         {
 517                                                         done = TRUE;
 518                                                         }
 519                                                 list = list->next;
 520                                                 }
 521                                         c++;
 522                                         }
 523                                 c -= 2;
 524                                 if (c > 0)
 525                                         {
 526                                         gchar *file;
 527                                         gchar *buf;
 528                                         file = g_strdup(test_file);
 529                                         file[c] = '\0';
 530                                         buf = g_build_filename(entry_dir, file, NULL);
 531                                         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 532                                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 533
 534 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 535
 536                                         poss = g_list_sort(poss, simple_sort);
 537                                         tab_completion_popup_list(td, poss);
 538
 539 #endif
 540
 541                                         g_free(file);
 542                                         g_free(buf);
 543                                         g_list_free(poss);
 544                                         g_free(entry_dir);
 545                                         return TRUE;
 546                                         }
 547                                 }
 548                         g_list_free(poss);
 549                         }
 550                 }
 551
 552         g_free(entry_dir);
 553
 554         return FALSE;
 555 }
 556
 557 static gint tab_completion_key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
 558 {
 559         TabCompData *td = data;
 560         gint stop_signal = FALSE;
 561
 562         switch (event->keyval)
 563                 {
 564                 case GDK_Tab:
 565                         if (!(event->state & GDK_CONTROL_MASK))
 566                                 {
 567                                 if (tab_completion_do(td))
 568                                         {
 569                                         tab_completion_emit_tab_signal(td);
 570                                         }
 571                                 stop_signal = TRUE;
 572                                 }
 573                         break;
 574                 case GDK_Return: case GDK_KP_Enter:
 575                         if (td->fd_button &&
 576                             (event->state & GDK_CONTROL_MASK))
 577                                 {
 578                                 tab_completion_select_show(td);
 579                                 stop_signal = TRUE;
 580                                 }
 581                         else if (tab_completion_emit_enter_signal(td))
 582                                 {
 583                                 stop_signal = TRUE;
 584                                 }
 585                         break;
 586                 default:
 587                         break;
 588                 }
 589
 590         if (stop_signal) g_signal_stop_emission_by_name(G_OBJECT(widget), "key_press_event");
 591
 592         return (stop_signal);
 593 }
 594
 595 static void tab_completion_button_pressed(GtkWidget *widget, gpointer data)
 596 {
 597         TabCompData *td;
 598         GtkWidget *entry = data;
 599
 600         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 601
 602         if (!td) return;
 603
 604         if (!GTK_WIDGET_HAS_FOCUS(entry))
 605                 {
 606                 gtk_widget_grab_focus(entry);
 607                 }
 608
 609         if (tab_completion_do(td))
 610                 {
 611                 tab_completion_emit_tab_signal(td);
 612                 }
 613 }
 614
 615 static void tab_completion_button_size_allocate(GtkWidget *button, GtkAllocation *allocation, gpointer data)
 616 {
 617         GtkWidget *parent = data;
 618
 619         if (allocation->height > parent->allocation.height)
 620                 {
 621                 GtkAllocation button_allocation;
 622
 623                 button_allocation = button->allocation;
 624                 button_allocation.height = parent->allocation.height;
 625                 button_allocation.y = parent->allocation.y +
 626                         (parent->allocation.height - parent->allocation.height) / 2;
 627                 gtk_widget_size_allocate(button, &button_allocation);
 628                 }
 629 }
 630
 631 static GtkWidget *tab_completion_create_complete_button(GtkWidget *entry, GtkWidget *parent)
 632 {
 633         GtkWidget *button;
 634         GtkWidget *icon;
 635         GdkPixbuf *pixbuf;
 636
 637         button = gtk_button_new();
 638         GTK_WIDGET_UNSET_FLAGS(button, GTK_CAN_FOCUS);
 639         g_signal_connect(G_OBJECT(button), "size_allocate",
 640                          G_CALLBACK(tab_completion_button_size_allocate), parent);
 641         g_signal_connect(G_OBJECT(button), "clicked",
 642                          G_CALLBACK(tab_completion_button_pressed), entry);
 643
 644         pixbuf = gdk_pixbuf_new_from_inline(-1, icon_tabcomp, FALSE, NULL);
 645         icon = gtk_image_new_from_pixbuf(pixbuf);
 646         g_object_unref(pixbuf);
 647
 648         gtk_container_add(GTK_CONTAINER(button), icon);
 649         gtk_widget_show(icon);
 650
 651         return button;
 652 }
 653
 654 /*
 655  *----------------------------------------------------------------------------
 656  * public interface
 657  *----------------------------------------------------------------------------
 658  */
 659
 660 GtkWidget *tab_completion_new_with_history(GtkWidget **entry, const gchar *text,
 661                                            const gchar *history_key, gint max_levels,
 662                                            void (*enter_func)(const gchar *, gpointer), gpointer data)
 663 {
 664         GtkWidget *box;
 665         GtkWidget *combo;
 666         GtkWidget *combo_entry;
 667         GtkWidget *button;
 668         GList *work;
 669         TabCompData *td;
 670         gint n = 0;
 671
 672         box = gtk_hbox_new(FALSE, 0);
 673
 674         combo = gtk_combo_box_entry_new_text();
 675         gtk_box_pack_start(GTK_BOX(box), combo, TRUE, TRUE, 0);
 676         gtk_widget_show(combo);
 677
 678         combo_entry = GTK_BIN(combo)->child;
 679 #if 0
 680         gtk_combo_set_case_sensitive(GTK_COMBO(combo), TRUE);
 681         gtk_combo_set_use_arrows(GTK_COMBO(combo), FALSE);
 682 #endif
 683
 684         button = tab_completion_create_complete_button(combo_entry, combo);
 685         gtk_box_pack_start(GTK_BOX(box), button, FALSE, FALSE, 0);
 686         gtk_widget_show(button);
 687
 688         tab_completion_add_to_entry(combo_entry, enter_func, data);
 689
 690         td = g_object_get_data(G_OBJECT(combo_entry), "tab_completion_data");
 691         if (!td) return NULL; /* this should never happen! */
 692
 693         td->combo = combo;
 694         td->has_history = TRUE;
 695         td->history_key = g_strdup(history_key);
 696         td->history_levels = max_levels;
 697
 698         work = history_list_get_by_key(td->history_key);
 699
 700         work = history_list_get_by_key(history_key);
 701         while (work)
 702                 {
 703                 gtk_combo_box_append_text(GTK_COMBO_BOX(combo), (gchar *)work->data);
 704                 work = work->next;
 705                 n++;
 706                 }
 707
 708         if (text)
 709                 {
 710                 gtk_entry_set_text(GTK_ENTRY(combo_entry), text);
 711                 }
 712         else if (n > 0)
 713                 {
 714                 gtk_combo_box_set_active(GTK_COMBO_BOX(combo), 0);
 715                 }
 716
 717         if (entry) *entry = combo_entry;
 718         return box;
 719 }
 720
 721 const gchar *tab_completion_set_to_last_history(GtkWidget *entry)
 722 {
 723         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 724         const gchar *buf;
 725
 726         if (!td || !td->has_history) return NULL;
 727
 728         buf = history_list_find_last_path_by_key(td->history_key);
 729         if (buf)
 730                 {
 731                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 732                 }
 733
 734         return buf;
 735 }
 736
 737 void tab_completion_append_to_history(GtkWidget *entry, const gchar *path)
 738 {
 739         TabCompData *td;
 740         GtkTreeModel *store;
 741         GList *work;
 742         gint n = 0;
 743
 744         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 745
 746         if (!path) return;
 747
 748         if (!td || !td->has_history) return;
 749
 750         history_list_add_to_key(td->history_key, path, td->history_levels);
 751
 752         gtk_combo_box_set_active(GTK_COMBO_BOX(td->combo), -1);
 753
 754         store = gtk_combo_box_get_model(GTK_COMBO_BOX(td->combo));
 755         gtk_list_store_clear(GTK_LIST_STORE(store));
 756
 757         work = history_list_get_by_key(td->history_key);
 758         while (work)
 759                 {
 760                 gtk_combo_box_append_text(GTK_COMBO_BOX(td->combo), (gchar *)work->data);
 761                 work = work->next;
 762                 n++;
 763                 }
 764
 765         if (td->tab_append_func) {
 766                 td->tab_append_func(path, td->tab_append_data, n);
 767         }
 768 }
 769
 770 GtkWidget *tab_completion_new(GtkWidget **entry, const gchar *text,
 771                               void (*enter_func)(const gchar *, gpointer), gpointer data)
 772 {
 773         GtkWidget *hbox;
 774         GtkWidget *button;
 775         GtkWidget *newentry;
 776
 777         hbox = gtk_hbox_new(FALSE, 0);
 778
 779         newentry = gtk_entry_new();
 780         if (text) gtk_entry_set_text(GTK_ENTRY(newentry), text);
 781         gtk_box_pack_start(GTK_BOX(hbox), newentry, TRUE, TRUE, 0);
 782         gtk_widget_show(newentry);
 783
 784         button = tab_completion_create_complete_button(newentry, newentry);
 785         gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
 786         gtk_widget_show(button);
 787
 788         tab_completion_add_to_entry(newentry, enter_func, data);
 789
 790         if (entry) *entry = newentry;
 791         return hbox;
 792 }
 793
 794 void tab_completion_add_to_entry(GtkWidget *entry, void (*enter_func)(const gchar *, gpointer), gpointer data)
 795 {
 796         TabCompData *td;
 797         if (!entry)
 798                 {
 799                 log_printf("Tab completion error: entry != NULL\n");
 800                 return;
 801                 }
 802
 803         td = g_new0(TabCompData, 1);
 804
 805         td->entry = entry;
 806         td->enter_func = enter_func;
 807         td->enter_data = data;
 808
 809         g_object_set_data(G_OBJECT(td->entry), "tab_completion_data", td);
 810
 811         g_signal_connect(G_OBJECT(entry), "key_press_event",
 812                          G_CALLBACK(tab_completion_key_pressed), td);
 813         g_signal_connect(G_OBJECT(entry), "destroy",
 814                          G_CALLBACK(tab_completion_destroy), td);
 815 }
 816
 817 void tab_completion_add_tab_func(GtkWidget *entry, void (*tab_func)(const gchar *, gpointer), gpointer data)
 818 {
 819         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 820
 821         if (!td) return;
 822
 823         td->tab_func = tab_func;
 824         td->tab_data = data;
 825 }
 826
 827 /* Add a callback function called when a new entry is appended to the list */
 828 void tab_completion_add_append_func(GtkWidget *entry, void (*tab_append_func)(const gchar *, gpointer, gint), gpointer data)
 829 {
 830         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 831
 832         if (!td) return;
 833
 834         td->tab_append_func = tab_append_func;
 835         td->tab_append_data = data;
 836 }
 837
 838 gchar *remove_trailing_slash(const gchar *path)
 839 {
 840         gint l;
 841
 842         if (!path) return NULL;
 843
 844         l = strlen(path);
 845         while (l > 1 && path[l - 1] == G_DIR_SEPARATOR) l--;
 846
 847         return g_strndup(path, l);
 848 }
 849
 850 static void tab_completion_select_cancel_cb(FileDialog *fd, gpointer data)
 851 {
 852         TabCompData *td = data;
 853
 854         td->fd = NULL;
 855         file_dialog_close(fd);
 856 }
 857
 858 static void tab_completion_select_ok_cb(FileDialog *fd, gpointer data)
 859 {
 860         TabCompData *td = data;
 861
 862         gtk_entry_set_text(GTK_ENTRY(td->entry), gtk_entry_get_text(GTK_ENTRY(fd->entry)));
 863
 864         tab_completion_select_cancel_cb(fd, data);
 865
 866         tab_completion_emit_enter_signal(td);
 867 }
 868
 869 static void tab_completion_select_show(TabCompData *td)
 870 {
 871         const gchar *title;
 872         const gchar *path;
 873
 874         if (td->fd)
 875                 {
 876                 gtk_window_present(GTK_WINDOW(GENERIC_DIALOG(td->fd)->dialog));
 877                 return;
 878                 }
 879
 880         title = (td->fd_title) ? td->fd_title : _("Select path");
 881         td->fd = file_dialog_new(title, "select_path", td->entry,
 882                                  tab_completion_select_cancel_cb, td);
 883         file_dialog_add_button(td->fd, GTK_STOCK_OK, NULL,
 884                                  tab_completion_select_ok_cb, TRUE);
 885
 886         generic_dialog_add_message(GENERIC_DIALOG(td->fd), NULL, title, NULL);
 887
 888         path = gtk_entry_get_text(GTK_ENTRY(td->entry));
 889         if (strlen(path) == 0) path = NULL;
 890         if (td->fd_folders_only)
 891                 {
 892                 file_dialog_add_path_widgets(td->fd, NULL, path, td->history_key, NULL, NULL);
 893                 }
 894         else
 895                 {
 896                 file_dialog_add_path_widgets(td->fd, NULL, path, td->history_key, "*", _("All files"));
 897                 }
 898
 899         gtk_widget_show(GENERIC_DIALOG(td->fd)->dialog);
 900 }
 901
 902 static void tab_completion_select_pressed(GtkWidget *widget, gpointer data)
 903 {
 904         TabCompData *td = data;
 905
 906         tab_completion_select_show(td);
 907 }
 908
 909 void tab_completion_add_select_button(GtkWidget *entry, const gchar *title, gint folders_only)
 910 {
 911         TabCompData *td;
 912         GtkWidget *parent;
 913         GtkWidget *hbox;
 914
 915         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 916
 917         if (!td) return;
 918
 919         g_free(td->fd_title);
 920         td->fd_title = g_strdup(title);
 921         td->fd_folders_only = folders_only;
 922
 923         if (td->fd_button) return;
 924
 925         parent = (td->combo) ? td->combo : td->entry;
 926
 927         hbox = gtk_widget_get_parent(parent);
 928         if (!GTK_IS_BOX(hbox)) return;
 929
 930         td->fd_button = gtk_button_new_with_label("...");
 931         g_signal_connect(G_OBJECT(td->fd_button), "size_allocate",
 932                          G_CALLBACK(tab_completion_button_size_allocate), parent);
 933         g_signal_connect(G_OBJECT(td->fd_button), "clicked",
 934                          G_CALLBACK(tab_completion_select_pressed), td);
 935
 936         gtk_box_pack_start(GTK_BOX(hbox), td->fd_button, FALSE, FALSE, 0);
 937
 938         gtk_widget_show(td->fd_button);
 939 }
 940 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */