src/ui_tabcomp.c

   1 /*
   2  * Copyright (C) 2006 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #  include "config.h"
  24 #endif
  25 #include "intl.h"
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include <sys/types.h>
  32 #include <dirent.h>
  33
  34 #include <gdk/gdk.h>
  35 #include <gtk/gtk.h>
  36 #include <gdk-pixbuf/gdk-pixbuf.h>
  37
  38 #include "main.h"
  39 #include "ui_tabcomp.h"
  40
  41 #include "history_list.h"
  42 #include "misc.h"       /* expand_tilde() */
  43 #include "ui_fileops.h"
  44 #include "ui_spinner.h"
  45 #include "ui_utildlg.h"
  46
  47 #include <gdk/gdkkeysyms.h> /* for key values */
  48
  49
  50 /* define this to enable a pop-up menu that shows possible matches
  51  * #define TAB_COMPLETION_ENABLE_POPUP_MENU
  52  */
  53 #define TAB_COMPLETION_ENABLE_POPUP_MENU 1
  54 #define TAB_COMP_POPUP_MAX 1000
  55
  56 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
  57 #include "ui_menu.h"
  58 #endif
  59
  60
  61 /* ----------------------------------------------------------------
  62    Tab completion routines, can be connected to any gtkentry widget
  63    using the tab_completion_add_to_entry() function.
  64    Use remove_trailing_slash() to strip the trailing G_DIR_SEPARATOR.
  65    ----------------------------------------------------------------*/
  66
  67 typedef struct _TabCompData TabCompData;
  68 struct _TabCompData
  69 {
  70         GtkWidget *entry;
  71         gchar *dir_path;
  72         GList *file_list;
  73         void (*enter_func)(const gchar *, gpointer);
  74         void (*tab_func)(const gchar *, gpointer);
  75         void (*tab_append_func)(const gchar *, gpointer, gint);
  76
  77         gpointer enter_data;
  78         gpointer tab_data;
  79         gpointer tab_append_data;
  80
  81         GtkWidget *combo;
  82         gboolean has_history;
  83         gchar *history_key;
  84         gint history_levels;
  85
  86         FileDialog *fd;
  87         gchar *fd_title;
  88         gboolean fd_folders_only;
  89         GtkWidget *fd_button;
  90         gchar *filter;
  91         gchar *filter_desc;
  92
  93         guint choices;
  94 };
  95
  96
  97 static void tab_completion_select_show(TabCompData *td);
  98 static gint tab_completion_do(TabCompData *td);
  99
 100 static void tab_completion_free_list(TabCompData *td)
 101 {
 102         GList *list;
 103
 104         g_free(td->dir_path);
 105         td->dir_path = NULL;
 106
 107         list = td->file_list;
 108
 109         while (list)
 110                 {
 111                 g_free(list->data);
 112                 list = list->next;
 113                 }
 114
 115         g_list_free(td->file_list);
 116         td->file_list = NULL;
 117 }
 118
 119 static void tab_completion_read_dir(TabCompData *td, const gchar *path)
 120 {
 121         DIR *dp;
 122         struct dirent *dir;
 123         GList *list = NULL;
 124         gchar *pathl;
 125
 126         tab_completion_free_list(td);
 127
 128         pathl = path_from_utf8(path);
 129         dp = opendir(pathl);
 130         if (!dp)
 131                 {
 132                 /* dir not found */
 133                 g_free(pathl);
 134                 return;
 135                 }
 136         while ((dir = readdir(dp)) != NULL)
 137                 {
 138                 gchar *name = dir->d_name;
 139                 if (strcmp(name, ".") != 0 && strcmp(name, "..") != 0)
 140                         {
 141                         gchar *abspath = g_build_filename(pathl, name, NULL);
 142
 143                         if (g_file_test(abspath, G_FILE_TEST_IS_DIR))
 144                                 {
 145                                 gchar *dname = g_strconcat(name, G_DIR_SEPARATOR_S, NULL);
 146                                 list = g_list_prepend(list, path_to_utf8(dname));
 147                                 g_free(dname);
 148                                 }
 149                         else
 150                                 {
 151                                 list = g_list_prepend(list, path_to_utf8(name));
 152                                 }
 153                         g_free(abspath);
 154                         }
 155                 }
 156         closedir(dp);
 157
 158         td->dir_path = g_strdup(path);
 159         td->file_list = list;
 160         g_free(pathl);
 161 }
 162
 163 static void tab_completion_destroy(GtkWidget *widget, gpointer data)
 164 {
 165         TabCompData *td = data;
 166
 167         tab_completion_free_list(td);
 168         g_free(td->history_key);
 169
 170         if (td->fd) file_dialog_close(td->fd);
 171         g_free(td->fd_title);
 172
 173         g_free(td->filter);
 174         g_free(td->filter_desc);
 175
 176         g_free(td);
 177 }
 178
 179 static gchar *tab_completion_get_text(TabCompData *td)
 180 {
 181         gchar *text;
 182
 183         text = g_strdup(gtk_entry_get_text(GTK_ENTRY(td->entry)));
 184
 185         if (text[0] == '~')
 186                 {
 187                 gchar *t = text;
 188                 text = expand_tilde(text);
 189                 g_free(t);
 190                 }
 191
 192         return text;
 193 }
 194
 195 static gboolean tab_completion_emit_enter_signal(TabCompData *td)
 196 {
 197         gchar *text;
 198         if (!td->enter_func) return FALSE;
 199
 200         text = tab_completion_get_text(td);
 201         td->enter_func(text, td->enter_data);
 202         g_free(text);
 203
 204         return TRUE;
 205 }
 206
 207 static void tab_completion_emit_tab_signal(TabCompData *td)
 208 {
 209         gchar *text;
 210         if (!td->tab_func) return;
 211
 212         text = tab_completion_get_text(td);
 213         td->tab_func(text, td->tab_data);
 214         g_free(text);
 215 }
 216
 217 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 218 void tab_completion_iter_menu_items(GtkWidget *widget, gpointer data)
 219 {
 220         TabCompData *td = data;
 221         GtkWidget *child;
 222
 223         if (!gtk_widget_get_visible(widget)) return;
 224
 225         child = gtk_bin_get_child(GTK_BIN(widget));
 226         if (GTK_IS_LABEL(child)) {
 227                 const gchar *text = gtk_label_get_text(GTK_LABEL(child));
 228                 const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(td->entry));
 229                 const gchar *prefix = filename_from_path(entry_text);
 230                 guint prefix_len = strlen(prefix);
 231
 232                 if (strlen(text) < prefix_len || strncmp(text, prefix, prefix_len))
 233                         {
 234                         /* Hide menu items not matching */
 235                         gtk_widget_hide(widget);
 236                         }
 237                 else
 238                         {
 239                         /* Count how many choices are left in the menu */
 240                         td->choices++;
 241                         }
 242         }
 243 }
 244
 245 static gboolean tab_completion_popup_key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
 246 {
 247         TabCompData *td = data;
 248
 249         if (event->keyval == GDK_KEY_Tab ||
 250             event->keyval == GDK_KEY_BackSpace ||
 251             (event->keyval >= 0x20 && event->keyval <= 0xFF) )
 252                 {
 253                 if (event->keyval >= 0x20 && event->keyval <= 0xFF)
 254                         {
 255                         gchar buf[2];
 256                         gint p = -1;
 257
 258                         buf[0] = event->keyval;
 259                         buf[1] = '\0';
 260                         gtk_editable_insert_text(GTK_EDITABLE(td->entry), buf, 1, &p);
 261                         gtk_editable_set_position(GTK_EDITABLE(td->entry), -1);
 262
 263                         /* Reduce the number of entries in the menu */
 264                         td->choices = 0;
 265                         gtk_container_foreach(GTK_CONTAINER(widget), tab_completion_iter_menu_items, (gpointer) td);
 266                         if (td->choices > 1) return TRUE; /* multiple choices */
 267                         if (td->choices > 0) tab_completion_do(td); /* one choice */
 268                         }
 269
 270                 /* close the menu */
 271                 gtk_menu_popdown(GTK_MENU(widget));
 272                 /* doing this does not emit the "selection done" signal, unref it ourselves */
 273                 g_object_unref(widget);
 274                 return TRUE;
 275                 }
 276
 277         return FALSE;
 278 }
 279
 280 static void tab_completion_popup_cb(GtkWidget *widget, gpointer data)
 281 {
 282         gchar *name = data;
 283         TabCompData *td;
 284         gchar *buf;
 285
 286         td = g_object_get_data(G_OBJECT(widget), "tab_completion_data");
 287         if (!td) return;
 288
 289         buf = g_build_filename(td->dir_path, name, NULL);
 290         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 291         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 292         g_free(buf);
 293
 294         tab_completion_emit_tab_signal(td);
 295 }
 296
 297 static void tab_completion_popup_pos_cb(GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer data)
 298 {
 299         TabCompData *td = data;
 300         gint height;
 301         PangoLayout *layout;
 302         PangoRectangle strong_pos, weak_pos;
 303         gint length;
 304         gint xoffset, yoffset;
 305         GtkRequisition req;
 306         GdkScreen *screen;
 307         gint monitor_num;
 308         GdkRectangle monitor;
 309         GtkRequisition requisition;
 310         GtkAllocation allocation;
 311
 312         gdk_window_get_origin(gtk_widget_get_window(GTK_WIDGET(td->entry)), x, y);
 313
 314         screen = gtk_widget_get_screen(GTK_WIDGET(menu));
 315         monitor_num = gdk_screen_get_monitor_at_window(screen, gtk_widget_get_window(GTK_WIDGET(td->entry)));
 316         gdk_screen_get_monitor_geometry(screen, monitor_num, &monitor);
 317
 318         gtk_widget_size_request(GTK_WIDGET(menu), &req);
 319
 320         length = strlen(gtk_entry_get_text(GTK_ENTRY(td->entry)));
 321         gtk_entry_get_layout_offsets(GTK_ENTRY(td->entry), &xoffset, &yoffset);
 322
 323         layout = gtk_entry_get_layout(GTK_ENTRY(td->entry));
 324         pango_layout_get_cursor_pos(layout, length, &strong_pos, &weak_pos);
 325
 326         *x += strong_pos.x / PANGO_SCALE + xoffset;
 327
 328         gtk_widget_get_requisition(td->entry, &requisition);
 329         gtk_widget_get_allocation(td->entry, &allocation);
 330
 331         height = MIN(requisition.height, allocation.height);
 332
 333         if (req.height > monitor.y + monitor.height - *y - height &&
 334             *y - monitor.y >  monitor.y + monitor.height - *y)
 335                 {
 336                 height = MIN(*y - monitor.y, req.height);
 337                 gtk_widget_set_size_request(GTK_WIDGET(menu), -1, height);
 338                 *y -= height;
 339                 }
 340         else
 341                 {
 342                 *y += height;
 343                 }
 344 }
 345
 346 static void tab_completion_popup_list(TabCompData *td, GList *list)
 347 {
 348         GtkWidget *menu;
 349         GList *work;
 350         GdkEvent *event;
 351         guint32 etime;
 352         gint ebutton;
 353         gint count = 0;
 354
 355         if (!list) return;
 356
 357 #if 0
 358         /*
 359          * well, the menu would be too long anyway...
 360          * (listing /dev causes gtk+ window allocation errors, -> too big a window)
 361          * this is why menu popups are disabled, this really should be a popup scrollable listview.
 362          */
 363         if (g_list_length(list) > 200) return;
 364 #endif
 365
 366         menu = popup_menu_short_lived();
 367
 368         work = list;
 369         while (work && count < TAB_COMP_POPUP_MAX)
 370                 {
 371                 gchar *name = work->data;
 372                 GtkWidget *item;
 373
 374                 item = menu_item_add_simple(menu, name, G_CALLBACK(tab_completion_popup_cb), name);
 375                 g_object_set_data(G_OBJECT(item), "tab_completion_data", td);
 376
 377                 work = work->next;
 378                 count++;
 379                 }
 380
 381         g_signal_connect(G_OBJECT(menu), "key_press_event",
 382                          G_CALLBACK(tab_completion_popup_key_press), td);
 383
 384         /* peek at the current event to get the time, etc. */
 385         event = gtk_get_current_event();
 386
 387         if (event && event->type == GDK_BUTTON_RELEASE)
 388                 {
 389                 ebutton = event->button.button;
 390                 }
 391         else
 392                 {
 393                 ebutton = 0;
 394                 }
 395
 396         if (event)
 397                 {
 398                 etime = gdk_event_get_time(event);
 399                 gdk_event_free(event);
 400                 }
 401         else
 402                 {
 403                 etime = 0;
 404                 }
 405
 406         gtk_menu_popup(GTK_MENU(menu), NULL, NULL,
 407                        tab_completion_popup_pos_cb, td, ebutton, etime);
 408 }
 409
 410 #ifndef CASE_SORT
 411 #define CASE_SORT strcmp
 412 #endif
 413
 414 static gint simple_sort(gconstpointer a, gconstpointer b)
 415 {
 416         return CASE_SORT((gchar *)a, (gchar *)b);
 417 }
 418
 419 #endif
 420
 421 static gboolean tab_completion_do(TabCompData *td)
 422 {
 423         const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(td->entry));
 424         const gchar *entry_file;
 425         gchar *entry_dir;
 426         gchar *ptr;
 427         gboolean home_exp = FALSE;
 428
 429         if (entry_text[0] == '\0')
 430                 {
 431                 entry_dir = g_strdup(G_DIR_SEPARATOR_S); /* FIXME: root directory win32 */
 432                 gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 433                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 434                 g_free(entry_dir);
 435                 return FALSE;
 436                 }
 437
 438         /* home dir expansion */
 439         if (entry_text[0] == '~')
 440                 {
 441                 entry_dir = expand_tilde(entry_text);
 442                 home_exp = TRUE;
 443                 }
 444         else
 445                 {
 446                 entry_dir = g_strdup(entry_text);
 447                 }
 448
 449         if (isfile(entry_dir))
 450                 {
 451                 if (home_exp)
 452                         {
 453                         gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 454                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 455                         }
 456                 g_free(entry_dir);
 457                 return home_exp;
 458                 }
 459
 460         entry_file = filename_from_path(entry_text);
 461
 462         if (isdir(entry_dir) && strcmp(entry_file, ".") != 0 && strcmp(entry_file, "..") != 0)
 463                 {
 464                 ptr = entry_dir + strlen(entry_dir) - 1;
 465                 if (ptr[0] == G_DIR_SEPARATOR)
 466                         {
 467                         if (home_exp)
 468                                 {
 469                                 gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 470                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 471                                 }
 472
 473                         tab_completion_read_dir(td, entry_dir);
 474                         td->file_list = g_list_sort(td->file_list, simple_sort);
 475                         if (td->file_list && !td->file_list->next)
 476                                 {
 477                                 gchar *buf;
 478                                 const gchar *file;
 479
 480                                 file = td->file_list->data;
 481                                 buf = g_build_filename(entry_dir, file, NULL);
 482                                 if (isdir(buf))
 483                                         {
 484                                         gchar *tmp = g_strconcat(buf, G_DIR_SEPARATOR_S, NULL);
 485                                         g_free(buf);
 486                                         buf = tmp;
 487                                         }
 488                                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 489                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 490                                 g_free(buf);
 491                                 }
 492
 493 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 494
 495                         else
 496                                 {
 497                                 tab_completion_popup_list(td, td->file_list);
 498                                 }
 499 #endif
 500
 501                         g_free(entry_dir);
 502                         return home_exp;
 503                         }
 504                 else
 505                         {
 506                         gchar *buf = g_strconcat(entry_dir, G_DIR_SEPARATOR_S, NULL);
 507                         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 508                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 509                         g_free(buf);
 510                         g_free(entry_dir);
 511                         return TRUE;
 512                         }
 513                 }
 514
 515         ptr = (gchar *)filename_from_path(entry_dir);
 516         if (ptr > entry_dir) ptr--;
 517         ptr[0] = '\0';
 518
 519         if (strlen(entry_dir) == 0)
 520                 {
 521                 g_free(entry_dir);
 522                 entry_dir = g_strdup(G_DIR_SEPARATOR_S); /* FIXME: win32 */
 523                 }
 524
 525         if (isdir(entry_dir))
 526                 {
 527                 GList *list;
 528                 GList *poss = NULL;
 529                 gint l = strlen(entry_file);
 530
 531                 if (!td->dir_path || !td->file_list || strcmp(td->dir_path, entry_dir) != 0)
 532                         {
 533                         tab_completion_read_dir(td, entry_dir);
 534                         }
 535
 536                 list = td->file_list;
 537                 while (list)
 538                         {
 539                         gchar *file = list->data;
 540                         if (strncmp(entry_file, file, l) == 0)
 541                                 {
 542                                 poss = g_list_prepend(poss, file);
 543                                 }
 544                         list = list->next;
 545                         }
 546
 547                 if (poss)
 548                         {
 549                         if (!poss->next)
 550                                 {
 551                                 gchar *file = poss->data;
 552                                 gchar *buf;
 553
 554                                 buf = g_build_filename(entry_dir, file, NULL);
 555                                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 556                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 557                                 g_free(buf);
 558                                 g_list_free(poss);
 559                                 g_free(entry_dir);
 560                                 return TRUE;
 561                                 }
 562                         else
 563                                 {
 564                                 gsize c = strlen(entry_file);
 565                                 gboolean done = FALSE;
 566                                 gchar *test_file = poss->data;
 567
 568                                 while (!done)
 569                                         {
 570                                         list = poss;
 571                                         if (!list) done = TRUE;
 572                                         while (list && !done)
 573                                                 {
 574                                                 gchar *file = list->data;
 575                                                 if (strlen(file) < c || strncmp(test_file, file, c) != 0)
 576                                                         {
 577                                                         done = TRUE;
 578                                                         }
 579                                                 list = list->next;
 580                                                 }
 581                                         c++;
 582                                         }
 583                                 c -= 2;
 584                                 if (c > 0)
 585                                         {
 586                                         gchar *file;
 587                                         gchar *buf;
 588                                         file = g_strdup(test_file);
 589                                         file[c] = '\0';
 590                                         buf = g_build_filename(entry_dir, file, NULL);
 591                                         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 592                                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 593
 594 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 595
 596                                         poss = g_list_sort(poss, simple_sort);
 597                                         tab_completion_popup_list(td, poss);
 598
 599 #endif
 600
 601                                         g_free(file);
 602                                         g_free(buf);
 603                                         g_list_free(poss);
 604                                         g_free(entry_dir);
 605                                         return TRUE;
 606                                         }
 607                                 }
 608                         g_list_free(poss);
 609                         }
 610                 }
 611
 612         g_free(entry_dir);
 613
 614         return FALSE;
 615 }
 616
 617 static gboolean tab_completion_key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
 618 {
 619         TabCompData *td = data;
 620         gboolean stop_signal = FALSE;
 621
 622         switch (event->keyval)
 623                 {
 624                 case GDK_KEY_Tab:
 625                         if (!(event->state & GDK_CONTROL_MASK))
 626                                 {
 627                                 if (tab_completion_do(td))
 628                                         {
 629                                         tab_completion_emit_tab_signal(td);
 630                                         }
 631                                 stop_signal = TRUE;
 632                                 }
 633                         break;
 634                 case GDK_KEY_Return: case GDK_KEY_KP_Enter:
 635                         if (td->fd_button &&
 636                             (event->state & GDK_CONTROL_MASK))
 637                                 {
 638                                 tab_completion_select_show(td);
 639                                 stop_signal = TRUE;
 640                                 }
 641                         else if (tab_completion_emit_enter_signal(td))
 642                                 {
 643                                 stop_signal = TRUE;
 644                                 }
 645                         break;
 646                 default:
 647                         break;
 648                 }
 649
 650         if (stop_signal) g_signal_stop_emission_by_name(G_OBJECT(widget), "key_press_event");
 651
 652         return (stop_signal);
 653 }
 654
 655 static void tab_completion_button_pressed(GtkWidget *widget, gpointer data)
 656 {
 657         TabCompData *td;
 658         GtkWidget *entry = data;
 659
 660         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 661
 662         if (!td) return;
 663
 664         if (!gtk_widget_has_focus(entry))
 665                 {
 666                 gtk_widget_grab_focus(entry);
 667                 }
 668
 669         if (tab_completion_do(td))
 670                 {
 671                 tab_completion_emit_tab_signal(td);
 672                 }
 673 }
 674
 675 static void tab_completion_button_size_allocate(GtkWidget *button, GtkAllocation *allocation, gpointer data)
 676 {
 677         GtkWidget *parent = data;
 678         GtkAllocation parent_allocation;
 679         gtk_widget_get_allocation(parent, &parent_allocation);
 680
 681         if (allocation->height > parent_allocation.height)
 682                 {
 683                 GtkAllocation button_allocation;
 684
 685                 gtk_widget_get_allocation(button, &button_allocation);
 686                 button_allocation.height = parent_allocation.height;
 687                 button_allocation.y = parent_allocation.y +
 688                         (parent_allocation.height - parent_allocation.height) / 2;
 689                 gtk_widget_size_allocate(button, &button_allocation);
 690                 }
 691 }
 692
 693 static GtkWidget *tab_completion_create_complete_button(GtkWidget *entry, GtkWidget *parent)
 694 {
 695         GtkWidget *button;
 696         GtkWidget *icon;
 697         GdkPixbuf *pixbuf;
 698
 699         button = gtk_button_new();
 700         gtk_widget_set_can_focus(button, FALSE);
 701         g_signal_connect(G_OBJECT(button), "size_allocate",
 702                          G_CALLBACK(tab_completion_button_size_allocate), parent);
 703         g_signal_connect(G_OBJECT(button), "clicked",
 704                          G_CALLBACK(tab_completion_button_pressed), entry);
 705
 706         pixbuf = gdk_pixbuf_new_from_inline(-1, icon_tabcomp, FALSE, NULL);
 707         icon = gtk_image_new_from_pixbuf(pixbuf);
 708         g_object_unref(pixbuf);
 709
 710         gtk_container_add(GTK_CONTAINER(button), icon);
 711         gtk_widget_show(icon);
 712
 713         return button;
 714 }
 715
 716 /*
 717  *----------------------------------------------------------------------------
 718  * public interface
 719  *----------------------------------------------------------------------------
 720  */
 721
 722 GtkWidget *tab_completion_new_with_history(GtkWidget **entry, const gchar *text,
 723                                            const gchar *history_key, gint max_levels,
 724                                            void (*enter_func)(const gchar *, gpointer), gpointer data)
 725 {
 726         GtkWidget *box;
 727         GtkWidget *combo;
 728         GtkWidget *combo_entry;
 729         GtkWidget *button;
 730         GList *work;
 731         TabCompData *td;
 732         gint n = 0;
 733
 734         box = gtk_hbox_new(FALSE, 0);
 735
 736         combo = gtk_combo_box_text_new_with_entry();
 737         gtk_box_pack_start(GTK_BOX(box), combo, TRUE, TRUE, 0);
 738         gtk_widget_show(combo);
 739
 740         combo_entry = gtk_bin_get_child(GTK_BIN(combo));
 741
 742         button = tab_completion_create_complete_button(combo_entry, combo);
 743         gtk_box_pack_start(GTK_BOX(box), button, FALSE, FALSE, 0);
 744         gtk_widget_show(button);
 745
 746         tab_completion_add_to_entry(combo_entry, enter_func, NULL, NULL, data);
 747
 748         td = g_object_get_data(G_OBJECT(combo_entry), "tab_completion_data");
 749         if (!td) return NULL; /* this should never happen! */
 750
 751         td->combo = combo;
 752         td->has_history = TRUE;
 753         td->history_key = g_strdup(history_key);
 754         td->history_levels = max_levels;
 755
 756         work = history_list_get_by_key(td->history_key);
 757
 758         work = history_list_get_by_key(history_key);
 759         while (work)
 760                 {
 761                 gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(combo), (gchar *)work->data);
 762                 work = work->next;
 763                 n++;
 764                 }
 765
 766         if (text)
 767                 {
 768                 gtk_entry_set_text(GTK_ENTRY(combo_entry), text);
 769                 }
 770         else if (n > 0)
 771                 {
 772                 gtk_combo_box_set_active(GTK_COMBO_BOX(combo), 0);
 773                 }
 774
 775         if (entry) *entry = combo_entry;
 776         return box;
 777 }
 778
 779 const gchar *tab_completion_set_to_last_history(GtkWidget *entry)
 780 {
 781         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 782         const gchar *buf;
 783
 784         if (!td || !td->has_history) return NULL;
 785
 786         buf = history_list_find_last_path_by_key(td->history_key);
 787         if (buf)
 788                 {
 789                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 790                 }
 791
 792         return buf;
 793 }
 794
 795 void tab_completion_append_to_history(GtkWidget *entry, const gchar *path)
 796 {
 797         TabCompData *td;
 798         GtkTreeModel *store;
 799         GList *work;
 800         gint n = 0;
 801
 802         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 803
 804         if (!path) return;
 805
 806         if (!td || !td->has_history) return;
 807
 808         history_list_add_to_key(td->history_key, path, td->history_levels);
 809
 810         gtk_combo_box_set_active(GTK_COMBO_BOX(td->combo), -1);
 811
 812         store = gtk_combo_box_get_model(GTK_COMBO_BOX(td->combo));
 813         gtk_list_store_clear(GTK_LIST_STORE(store));
 814
 815         work = history_list_get_by_key(td->history_key);
 816         while (work)
 817                 {
 818                 gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(td->combo), (gchar *)work->data);
 819                 work = work->next;
 820                 n++;
 821                 }
 822
 823         if (td->tab_append_func) {
 824                 td->tab_append_func(path, td->tab_append_data, n);
 825         }
 826 }
 827
 828 GtkWidget *tab_completion_new(GtkWidget **entry, const gchar *text,
 829                               void (*enter_func)(const gchar *, gpointer), const gchar *filter, const gchar *filter_desc, gpointer data)
 830 {
 831         GtkWidget *hbox;
 832         GtkWidget *button;
 833         GtkWidget *newentry;
 834
 835         hbox = gtk_hbox_new(FALSE, 0);
 836
 837         newentry = gtk_entry_new();
 838         if (text) gtk_entry_set_text(GTK_ENTRY(newentry), text);
 839         gtk_box_pack_start(GTK_BOX(hbox), newentry, TRUE, TRUE, 0);
 840         gtk_widget_show(newentry);
 841
 842         button = tab_completion_create_complete_button(newentry, newentry);
 843         gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
 844         gtk_widget_show(button);
 845
 846         tab_completion_add_to_entry(newentry, enter_func, filter, filter_desc, data);
 847         if (entry) *entry = newentry;
 848         return hbox;
 849 }
 850
 851 void tab_completion_add_to_entry(GtkWidget *entry, void (*enter_func)(const gchar *, gpointer), const gchar *filter, const gchar *filter_desc, gpointer data)
 852 {
 853         TabCompData *td;
 854         if (!entry)
 855                 {
 856                 log_printf("Tab completion error: entry != NULL\n");
 857                 return;
 858                 }
 859
 860         td = g_new0(TabCompData, 1);
 861
 862         td->entry = entry;
 863         td->enter_func = enter_func;
 864         td->enter_data = data;
 865         td->filter = g_strdup(filter);
 866         td->filter_desc = g_strdup(filter_desc);
 867
 868         g_object_set_data(G_OBJECT(td->entry), "tab_completion_data", td);
 869
 870         g_signal_connect(G_OBJECT(entry), "key_press_event",
 871                          G_CALLBACK(tab_completion_key_pressed), td);
 872         g_signal_connect(G_OBJECT(entry), "destroy",
 873                          G_CALLBACK(tab_completion_destroy), td);
 874 }
 875
 876 void tab_completion_add_tab_func(GtkWidget *entry, void (*tab_func)(const gchar *, gpointer), gpointer data)
 877 {
 878         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 879
 880         if (!td) return;
 881
 882         td->tab_func = tab_func;
 883         td->tab_data = data;
 884 }
 885
 886 /* Add a callback function called when a new entry is appended to the list */
 887 void tab_completion_add_append_func(GtkWidget *entry, void (*tab_append_func)(const gchar *, gpointer, gint), gpointer data)
 888 {
 889         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 890
 891         if (!td) return;
 892
 893         td->tab_append_func = tab_append_func;
 894         td->tab_append_data = data;
 895 }
 896
 897 gchar *remove_trailing_slash(const gchar *path)
 898 {
 899         gint l;
 900
 901         if (!path) return NULL;
 902
 903         l = strlen(path);
 904         while (l > 1 && path[l - 1] == G_DIR_SEPARATOR) l--;
 905
 906         return g_strndup(path, l);
 907 }
 908
 909 static void tab_completion_select_cancel_cb(FileDialog *fd, gpointer data)
 910 {
 911         TabCompData *td = data;
 912
 913         td->fd = NULL;
 914         file_dialog_close(fd);
 915 }
 916
 917 static void tab_completion_select_ok_cb(FileDialog *fd, gpointer data)
 918 {
 919         TabCompData *td = data;
 920
 921         gtk_entry_set_text(GTK_ENTRY(td->entry), gtk_entry_get_text(GTK_ENTRY(fd->entry)));
 922
 923         tab_completion_select_cancel_cb(fd, data);
 924
 925         tab_completion_emit_enter_signal(td);
 926 }
 927
 928 static void tab_completion_select_show(TabCompData *td)
 929 {
 930         const gchar *title;
 931         const gchar *path;
 932         gchar *filter = NULL;
 933         gchar *filter_desc = NULL;
 934
 935         if (td->fd)
 936                 {
 937                 gtk_window_present(GTK_WINDOW(GENERIC_DIALOG(td->fd)->dialog));
 938                 return;
 939                 }
 940
 941         title = (td->fd_title) ? td->fd_title : _("Select path");
 942         td->fd = file_dialog_new(title, "select_path", td->entry,
 943                                  tab_completion_select_cancel_cb, td);
 944         file_dialog_add_button(td->fd, GTK_STOCK_OK, NULL,
 945                                  tab_completion_select_ok_cb, TRUE);
 946
 947         generic_dialog_add_message(GENERIC_DIALOG(td->fd), NULL, title, NULL, FALSE);
 948
 949         if (td->filter)
 950                 {
 951                 filter = td->filter;
 952                 }
 953         else
 954                 {
 955                 filter = "*";
 956                 }
 957         if (td->filter_desc)
 958                 {
 959                 filter_desc = td->filter_desc;
 960                 }
 961         else
 962                 {
 963                 filter_desc = _("All files");
 964                 }
 965
 966         path = gtk_entry_get_text(GTK_ENTRY(td->entry));
 967         if (strlen(path) == 0) path = NULL;
 968         if (td->fd_folders_only)
 969                 {
 970                 file_dialog_add_path_widgets(td->fd, NULL, path, td->history_key, NULL, NULL);
 971                 }
 972         else
 973                 {
 974                 file_dialog_add_path_widgets(td->fd, NULL, path, td->history_key, filter, filter_desc);
 975                 }
 976
 977         gtk_widget_show(GENERIC_DIALOG(td->fd)->dialog);
 978 }
 979
 980 static void tab_completion_select_pressed(GtkWidget *widget, gpointer data)
 981 {
 982         TabCompData *td = data;
 983
 984         tab_completion_select_show(td);
 985 }
 986
 987 void tab_completion_add_select_button(GtkWidget *entry, const gchar *title, gboolean folders_only)
 988 {
 989         TabCompData *td;
 990         GtkWidget *parent;
 991         GtkWidget *hbox;
 992
 993         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 994
 995         if (!td) return;
 996
 997         g_free(td->fd_title);
 998         td->fd_title = g_strdup(title);
 999         td->fd_folders_only = folders_only;
1000
1001         if (td->fd_button) return;
1002
1003         parent = (td->combo) ? td->combo : td->entry;
1004
1005         hbox = gtk_widget_get_parent(parent);
1006         if (!GTK_IS_BOX(hbox)) return;
1007
1008         td->fd_button = gtk_button_new_with_label("...");
1009         g_signal_connect(G_OBJECT(td->fd_button), "size_allocate",
1010                          G_CALLBACK(tab_completion_button_size_allocate), parent);
1011         g_signal_connect(G_OBJECT(td->fd_button), "clicked",
1012                          G_CALLBACK(tab_completion_select_pressed), td);
1013
1014         gtk_box_pack_start(GTK_BOX(hbox), td->fd_button, FALSE, FALSE, 0);
1015
1016         gtk_widget_show(td->fd_button);
1017 }
1018 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */