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_widget_get_visible(widget)) return;
 210
 211         child = gtk_bin_get_child(GTK_BIN(widget));
 212         if (GTK_IS_LABEL(child)) {
 213                 const gchar *text = gtk_label_get_text(GTK_LABEL(child));
 214                 const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(td->entry));
 215                 const gchar *prefix = filename_from_path(entry_text);
 216                 guint prefix_len = strlen(prefix);
 217
 218                 if (strlen(text) < prefix_len || strncmp(text, prefix, prefix_len))
 219                         {
 220                         /* Hide menu items not matching */
 221                         gtk_widget_hide(widget);
 222                         }
 223                 else
 224                         {
 225                         /* Count how many choices are left in the menu */
 226                         td->choices++;
 227                         }
 228         }
 229 }
 230
 231 static gboolean tab_completion_popup_key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
 232 {
 233         TabCompData *td = data;
 234
 235         if (event->keyval == GDK_KEY_Tab ||
 236             event->keyval == GDK_KEY_BackSpace ||
 237             (event->keyval >= 0x20 && event->keyval <= 0xFF) )
 238                 {
 239                 if (event->keyval >= 0x20 && event->keyval <= 0xFF)
 240                         {
 241                         gchar buf[2];
 242                         gint p = -1;
 243
 244                         buf[0] = event->keyval;
 245                         buf[1] = '\0';
 246                         gtk_editable_insert_text(GTK_EDITABLE(td->entry), buf, 1, &p);
 247                         gtk_editable_set_position(GTK_EDITABLE(td->entry), -1);
 248
 249                         /* Reduce the number of entries in the menu */
 250                         td->choices = 0;
 251                         gtk_container_foreach(GTK_CONTAINER(widget), tab_completion_iter_menu_items, (gpointer) td);
 252                         if (td->choices > 1) return TRUE; /* multiple choices */
 253                         if (td->choices > 0) tab_completion_do(td); /* one choice */
 254                         }
 255
 256                 /* close the menu */
 257                 gtk_menu_popdown(GTK_MENU(widget));
 258                 /* doing this does not emit the "selection done" signal, unref it ourselves */
 259                 g_object_unref(widget);
 260                 return TRUE;
 261                 }
 262
 263         return FALSE;
 264 }
 265
 266 static void tab_completion_popup_cb(GtkWidget *widget, gpointer data)
 267 {
 268         gchar *name = data;
 269         TabCompData *td;
 270         gchar *buf;
 271
 272         td = g_object_get_data(G_OBJECT(widget), "tab_completion_data");
 273         if (!td) return;
 274
 275         buf = g_build_filename(td->dir_path, name, NULL);
 276         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 277         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 278         g_free(buf);
 279
 280         tab_completion_emit_tab_signal(td);
 281 }
 282
 283 static void tab_completion_popup_pos_cb(GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer data)
 284 {
 285         TabCompData *td = data;
 286         gint height;
 287         PangoLayout *layout;
 288         PangoRectangle strong_pos, weak_pos;
 289         gint length;
 290         gint xoffset, yoffset;
 291         GtkRequisition req;
 292         GdkScreen *screen;
 293         gint monitor_num;
 294         GdkRectangle monitor;
 295         GtkRequisition requisition;
 296         GtkAllocation allocation;
 297
 298         gdk_window_get_origin(gtk_widget_get_window(GTK_WIDGET(td->entry)), x, y);
 299
 300         screen = gtk_widget_get_screen(GTK_WIDGET(menu));
 301         monitor_num = gdk_screen_get_monitor_at_window(screen, gtk_widget_get_window(GTK_WIDGET(td->entry)));
 302         gdk_screen_get_monitor_geometry(screen, monitor_num, &monitor);
 303
 304         gtk_widget_size_request(GTK_WIDGET(menu), &req);
 305
 306         length = strlen(gtk_entry_get_text(GTK_ENTRY(td->entry)));
 307         gtk_entry_get_layout_offsets(GTK_ENTRY(td->entry), &xoffset, &yoffset);
 308
 309         layout = gtk_entry_get_layout(GTK_ENTRY(td->entry));
 310         pango_layout_get_cursor_pos(layout, length, &strong_pos, &weak_pos);
 311
 312         *x += strong_pos.x / PANGO_SCALE + xoffset;
 313
 314         gtk_widget_get_requisition(td->entry, &requisition);
 315         gtk_widget_get_allocation(td->entry, &allocation);
 316
 317         height = MIN(requisition.height, allocation.height);
 318
 319         if (req.height > monitor.y + monitor.height - *y - height &&
 320             *y - monitor.y >  monitor.y + monitor.height - *y)
 321                 {
 322                 height = MIN(*y - monitor.y, req.height);
 323                 gtk_widget_set_size_request(GTK_WIDGET(menu), -1, height);
 324                 *y -= height;
 325                 }
 326         else
 327                 {
 328                 *y += height;
 329                 }
 330 }
 331
 332 static void tab_completion_popup_list(TabCompData *td, GList *list)
 333 {
 334         GtkWidget *menu;
 335         GList *work;
 336         GdkEvent *event;
 337         guint32 etime;
 338         gint ebutton;
 339         gint count = 0;
 340
 341         if (!list) return;
 342
 343 #if 0
 344         /*
 345          * well, the menu would be too long anyway...
 346          * (listing /dev causes gtk+ window allocation errors, -> too big a window)
 347          * this is why menu popups are disabled, this really should be a popup scrollable listview.
 348          */
 349         if (g_list_length(list) > 200) return;
 350 #endif
 351
 352         menu = popup_menu_short_lived();
 353
 354         work = list;
 355         while (work && count < TAB_COMP_POPUP_MAX)
 356                 {
 357                 gchar *name = work->data;
 358                 GtkWidget *item;
 359
 360                 item = menu_item_add_simple(menu, name, G_CALLBACK(tab_completion_popup_cb), name);
 361                 g_object_set_data(G_OBJECT(item), "tab_completion_data", td);
 362
 363                 work = work->next;
 364                 count++;
 365                 }
 366
 367         g_signal_connect(G_OBJECT(menu), "key_press_event",
 368                          G_CALLBACK(tab_completion_popup_key_press), td);
 369
 370         /* peek at the current event to get the time, etc. */
 371         event = gtk_get_current_event();
 372
 373         if (event && event->type == GDK_BUTTON_RELEASE)
 374                 {
 375                 ebutton = event->button.button;
 376                 }
 377         else
 378                 {
 379                 ebutton = 0;
 380                 }
 381
 382         if (event)
 383                 {
 384                 etime = gdk_event_get_time(event);
 385                 gdk_event_free(event);
 386                 }
 387         else
 388                 {
 389                 etime = 0;
 390                 }
 391
 392         gtk_menu_popup(GTK_MENU(menu), NULL, NULL,
 393                        tab_completion_popup_pos_cb, td, ebutton, etime);
 394 }
 395
 396 #ifndef CASE_SORT
 397 #define CASE_SORT strcmp
 398 #endif
 399
 400 static gint simple_sort(gconstpointer a, gconstpointer b)
 401 {
 402         return CASE_SORT((gchar *)a, (gchar *)b);
 403 }
 404
 405 #endif
 406
 407 static gboolean tab_completion_do(TabCompData *td)
 408 {
 409         const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(td->entry));
 410         const gchar *entry_file;
 411         gchar *entry_dir;
 412         gchar *ptr;
 413         gboolean home_exp = FALSE;
 414
 415         if (entry_text[0] == '\0')
 416                 {
 417                 entry_dir = g_strdup(G_DIR_SEPARATOR_S); /* FIXME: root directory win32 */
 418                 gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 419                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 420                 g_free(entry_dir);
 421                 return FALSE;
 422                 }
 423
 424         /* home dir expansion */
 425         if (entry_text[0] == '~')
 426                 {
 427                 entry_dir = expand_tilde(entry_text);
 428                 home_exp = TRUE;
 429                 }
 430         else
 431                 {
 432                 entry_dir = g_strdup(entry_text);
 433                 }
 434
 435         if (isfile(entry_dir))
 436                 {
 437                 if (home_exp)
 438                         {
 439                         gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 440                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 441                         }
 442                 g_free(entry_dir);
 443                 return home_exp;
 444                 }
 445
 446         entry_file = filename_from_path(entry_text);
 447
 448         if (isdir(entry_dir) && strcmp(entry_file, ".") != 0 && strcmp(entry_file, "..") != 0)
 449                 {
 450                 ptr = entry_dir + strlen(entry_dir) - 1;
 451                 if (ptr[0] == G_DIR_SEPARATOR)
 452                         {
 453                         if (home_exp)
 454                                 {
 455                                 gtk_entry_set_text(GTK_ENTRY(td->entry), entry_dir);
 456                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(entry_dir));
 457                                 }
 458
 459                         tab_completion_read_dir(td, entry_dir);
 460                         td->file_list = g_list_sort(td->file_list, simple_sort);
 461                         if (td->file_list && !td->file_list->next)
 462                                 {
 463                                 gchar *buf;
 464                                 const gchar *file;
 465
 466                                 file = td->file_list->data;
 467                                 buf = g_build_filename(entry_dir, file, NULL);
 468                                 if (isdir(buf))
 469                                         {
 470                                         gchar *tmp = g_strconcat(buf, G_DIR_SEPARATOR_S, NULL);
 471                                         g_free(buf);
 472                                         buf = tmp;
 473                                         }
 474                                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 475                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 476                                 g_free(buf);
 477                                 }
 478
 479 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 480
 481                         else
 482                                 {
 483                                 tab_completion_popup_list(td, td->file_list);
 484                                 }
 485 #endif
 486
 487                         g_free(entry_dir);
 488                         return home_exp;
 489                         }
 490                 else
 491                         {
 492                         gchar *buf = g_strconcat(entry_dir, G_DIR_SEPARATOR_S, NULL);
 493                         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 494                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 495                         g_free(buf);
 496                         g_free(entry_dir);
 497                         return TRUE;
 498                         }
 499                 }
 500
 501         ptr = (gchar *)filename_from_path(entry_dir);
 502         if (ptr > entry_dir) ptr--;
 503         ptr[0] = '\0';
 504
 505         if (strlen(entry_dir) == 0)
 506                 {
 507                 g_free(entry_dir);
 508                 entry_dir = g_strdup(G_DIR_SEPARATOR_S); /* FIXME: win32 */
 509                 }
 510
 511         if (isdir(entry_dir))
 512                 {
 513                 GList *list;
 514                 GList *poss = NULL;
 515                 gint l = strlen(entry_file);
 516
 517                 if (!td->dir_path || !td->file_list || strcmp(td->dir_path, entry_dir) != 0)
 518                         {
 519                         tab_completion_read_dir(td, entry_dir);
 520                         }
 521
 522                 list = td->file_list;
 523                 while (list)
 524                         {
 525                         gchar *file = list->data;
 526                         if (strncmp(entry_file, file, l) == 0)
 527                                 {
 528                                 poss = g_list_prepend(poss, file);
 529                                 }
 530                         list = list->next;
 531                         }
 532
 533                 if (poss)
 534                         {
 535                         if (!poss->next)
 536                                 {
 537                                 gchar *file = poss->data;
 538                                 gchar *buf;
 539
 540                                 buf = g_build_filename(entry_dir, file, NULL);
 541                                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 542                                 gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 543                                 g_free(buf);
 544                                 g_list_free(poss);
 545                                 g_free(entry_dir);
 546                                 return TRUE;
 547                                 }
 548                         else
 549                                 {
 550                                 gsize c = strlen(entry_file);
 551                                 gboolean done = FALSE;
 552                                 gchar *test_file = poss->data;
 553
 554                                 while (!done)
 555                                         {
 556                                         list = poss;
 557                                         if (!list) done = TRUE;
 558                                         while (list && !done)
 559                                                 {
 560                                                 gchar *file = list->data;
 561                                                 if (strlen(file) < c || strncmp(test_file, file, c) != 0)
 562                                                         {
 563                                                         done = TRUE;
 564                                                         }
 565                                                 list = list->next;
 566                                                 }
 567                                         c++;
 568                                         }
 569                                 c -= 2;
 570                                 if (c > 0)
 571                                         {
 572                                         gchar *file;
 573                                         gchar *buf;
 574                                         file = g_strdup(test_file);
 575                                         file[c] = '\0';
 576                                         buf = g_build_filename(entry_dir, file, NULL);
 577                                         gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 578                                         gtk_editable_set_position(GTK_EDITABLE(td->entry), strlen(buf));
 579
 580 #ifdef TAB_COMPLETION_ENABLE_POPUP_MENU
 581
 582                                         poss = g_list_sort(poss, simple_sort);
 583                                         tab_completion_popup_list(td, poss);
 584
 585 #endif
 586
 587                                         g_free(file);
 588                                         g_free(buf);
 589                                         g_list_free(poss);
 590                                         g_free(entry_dir);
 591                                         return TRUE;
 592                                         }
 593                                 }
 594                         g_list_free(poss);
 595                         }
 596                 }
 597
 598         g_free(entry_dir);
 599
 600         return FALSE;
 601 }
 602
 603 static gboolean tab_completion_key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
 604 {
 605         TabCompData *td = data;
 606         gboolean stop_signal = FALSE;
 607
 608         switch (event->keyval)
 609                 {
 610                 case GDK_KEY_Tab:
 611                         if (!(event->state & GDK_CONTROL_MASK))
 612                                 {
 613                                 if (tab_completion_do(td))
 614                                         {
 615                                         tab_completion_emit_tab_signal(td);
 616                                         }
 617                                 stop_signal = TRUE;
 618                                 }
 619                         break;
 620                 case GDK_KEY_Return: case GDK_KEY_KP_Enter:
 621                         if (td->fd_button &&
 622                             (event->state & GDK_CONTROL_MASK))
 623                                 {
 624                                 tab_completion_select_show(td);
 625                                 stop_signal = TRUE;
 626                                 }
 627                         else if (tab_completion_emit_enter_signal(td))
 628                                 {
 629                                 stop_signal = TRUE;
 630                                 }
 631                         break;
 632                 default:
 633                         break;
 634                 }
 635
 636         if (stop_signal) g_signal_stop_emission_by_name(G_OBJECT(widget), "key_press_event");
 637
 638         return (stop_signal);
 639 }
 640
 641 static void tab_completion_button_pressed(GtkWidget *widget, gpointer data)
 642 {
 643         TabCompData *td;
 644         GtkWidget *entry = data;
 645
 646         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 647
 648         if (!td) return;
 649
 650         if (!gtk_widget_has_focus(entry))
 651                 {
 652                 gtk_widget_grab_focus(entry);
 653                 }
 654
 655         if (tab_completion_do(td))
 656                 {
 657                 tab_completion_emit_tab_signal(td);
 658                 }
 659 }
 660
 661 static void tab_completion_button_size_allocate(GtkWidget *button, GtkAllocation *allocation, gpointer data)
 662 {
 663         GtkWidget *parent = data;
 664         GtkAllocation parent_allocation;
 665         gtk_widget_get_allocation(parent, &parent_allocation);
 666
 667         if (allocation->height > parent_allocation.height)
 668                 {
 669                 GtkAllocation button_allocation;
 670
 671                 gtk_widget_get_allocation(button, &button_allocation);
 672                 button_allocation.height = parent_allocation.height;
 673                 button_allocation.y = parent_allocation.y +
 674                         (parent_allocation.height - parent_allocation.height) / 2;
 675                 gtk_widget_size_allocate(button, &button_allocation);
 676                 }
 677 }
 678
 679 static GtkWidget *tab_completion_create_complete_button(GtkWidget *entry, GtkWidget *parent)
 680 {
 681         GtkWidget *button;
 682         GtkWidget *icon;
 683         GdkPixbuf *pixbuf;
 684
 685         button = gtk_button_new();
 686         gtk_widget_set_can_focus(button, FALSE);
 687         g_signal_connect(G_OBJECT(button), "size_allocate",
 688                          G_CALLBACK(tab_completion_button_size_allocate), parent);
 689         g_signal_connect(G_OBJECT(button), "clicked",
 690                          G_CALLBACK(tab_completion_button_pressed), entry);
 691
 692         pixbuf = gdk_pixbuf_new_from_inline(-1, icon_tabcomp, FALSE, NULL);
 693         icon = gtk_image_new_from_pixbuf(pixbuf);
 694         g_object_unref(pixbuf);
 695
 696         gtk_container_add(GTK_CONTAINER(button), icon);
 697         gtk_widget_show(icon);
 698
 699         return button;
 700 }
 701
 702 /*
 703  *----------------------------------------------------------------------------
 704  * public interface
 705  *----------------------------------------------------------------------------
 706  */
 707
 708 GtkWidget *tab_completion_new_with_history(GtkWidget **entry, const gchar *text,
 709                                            const gchar *history_key, gint max_levels,
 710                                            void (*enter_func)(const gchar *, gpointer), gpointer data)
 711 {
 712         GtkWidget *box;
 713         GtkWidget *combo;
 714         GtkWidget *combo_entry;
 715         GtkWidget *button;
 716         GList *work;
 717         TabCompData *td;
 718         gint n = 0;
 719
 720         box = gtk_hbox_new(FALSE, 0);
 721
 722         combo = gtk_combo_box_text_new_with_entry();
 723         gtk_box_pack_start(GTK_BOX(box), combo, TRUE, TRUE, 0);
 724         gtk_widget_show(combo);
 725
 726         combo_entry = gtk_bin_get_child(GTK_BIN(combo));
 727
 728         button = tab_completion_create_complete_button(combo_entry, combo);
 729         gtk_box_pack_start(GTK_BOX(box), button, FALSE, FALSE, 0);
 730         gtk_widget_show(button);
 731
 732         tab_completion_add_to_entry(combo_entry, enter_func, data);
 733
 734         td = g_object_get_data(G_OBJECT(combo_entry), "tab_completion_data");
 735         if (!td) return NULL; /* this should never happen! */
 736
 737         td->combo = combo;
 738         td->has_history = TRUE;
 739         td->history_key = g_strdup(history_key);
 740         td->history_levels = max_levels;
 741
 742         work = history_list_get_by_key(td->history_key);
 743
 744         work = history_list_get_by_key(history_key);
 745         while (work)
 746                 {
 747                 gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(combo), (gchar *)work->data);
 748                 work = work->next;
 749                 n++;
 750                 }
 751
 752         if (text)
 753                 {
 754                 gtk_entry_set_text(GTK_ENTRY(combo_entry), text);
 755                 }
 756         else if (n > 0)
 757                 {
 758                 gtk_combo_box_set_active(GTK_COMBO_BOX(combo), 0);
 759                 }
 760
 761         if (entry) *entry = combo_entry;
 762         return box;
 763 }
 764
 765 const gchar *tab_completion_set_to_last_history(GtkWidget *entry)
 766 {
 767         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 768         const gchar *buf;
 769
 770         if (!td || !td->has_history) return NULL;
 771
 772         buf = history_list_find_last_path_by_key(td->history_key);
 773         if (buf)
 774                 {
 775                 gtk_entry_set_text(GTK_ENTRY(td->entry), buf);
 776                 }
 777
 778         return buf;
 779 }
 780
 781 void tab_completion_append_to_history(GtkWidget *entry, const gchar *path)
 782 {
 783         TabCompData *td;
 784         GtkTreeModel *store;
 785         GList *work;
 786         gint n = 0;
 787
 788         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 789
 790         if (!path) return;
 791
 792         if (!td || !td->has_history) return;
 793
 794         history_list_add_to_key(td->history_key, path, td->history_levels);
 795
 796         gtk_combo_box_set_active(GTK_COMBO_BOX(td->combo), -1);
 797
 798         store = gtk_combo_box_get_model(GTK_COMBO_BOX(td->combo));
 799         gtk_list_store_clear(GTK_LIST_STORE(store));
 800
 801         work = history_list_get_by_key(td->history_key);
 802         while (work)
 803                 {
 804                 gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(td->combo), (gchar *)work->data);
 805                 work = work->next;
 806                 n++;
 807                 }
 808
 809         if (td->tab_append_func) {
 810                 td->tab_append_func(path, td->tab_append_data, n);
 811         }
 812 }
 813
 814 GtkWidget *tab_completion_new(GtkWidget **entry, const gchar *text,
 815                               void (*enter_func)(const gchar *, gpointer), gpointer data)
 816 {
 817         GtkWidget *hbox;
 818         GtkWidget *button;
 819         GtkWidget *newentry;
 820
 821         hbox = gtk_hbox_new(FALSE, 0);
 822
 823         newentry = gtk_entry_new();
 824         if (text) gtk_entry_set_text(GTK_ENTRY(newentry), text);
 825         gtk_box_pack_start(GTK_BOX(hbox), newentry, TRUE, TRUE, 0);
 826         gtk_widget_show(newentry);
 827
 828         button = tab_completion_create_complete_button(newentry, newentry);
 829         gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
 830         gtk_widget_show(button);
 831
 832         tab_completion_add_to_entry(newentry, enter_func, data);
 833
 834         if (entry) *entry = newentry;
 835         return hbox;
 836 }
 837
 838 void tab_completion_add_to_entry(GtkWidget *entry, void (*enter_func)(const gchar *, gpointer), gpointer data)
 839 {
 840         TabCompData *td;
 841         if (!entry)
 842                 {
 843                 log_printf("Tab completion error: entry != NULL\n");
 844                 return;
 845                 }
 846
 847         td = g_new0(TabCompData, 1);
 848
 849         td->entry = entry;
 850         td->enter_func = enter_func;
 851         td->enter_data = data;
 852
 853         g_object_set_data(G_OBJECT(td->entry), "tab_completion_data", td);
 854
 855         g_signal_connect(G_OBJECT(entry), "key_press_event",
 856                          G_CALLBACK(tab_completion_key_pressed), td);
 857         g_signal_connect(G_OBJECT(entry), "destroy",
 858                          G_CALLBACK(tab_completion_destroy), td);
 859 }
 860
 861 void tab_completion_add_tab_func(GtkWidget *entry, void (*tab_func)(const gchar *, gpointer), gpointer data)
 862 {
 863         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 864
 865         if (!td) return;
 866
 867         td->tab_func = tab_func;
 868         td->tab_data = data;
 869 }
 870
 871 /* Add a callback function called when a new entry is appended to the list */
 872 void tab_completion_add_append_func(GtkWidget *entry, void (*tab_append_func)(const gchar *, gpointer, gint), gpointer data)
 873 {
 874         TabCompData *td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 875
 876         if (!td) return;
 877
 878         td->tab_append_func = tab_append_func;
 879         td->tab_append_data = data;
 880 }
 881
 882 gchar *remove_trailing_slash(const gchar *path)
 883 {
 884         gint l;
 885
 886         if (!path) return NULL;
 887
 888         l = strlen(path);
 889         while (l > 1 && path[l - 1] == G_DIR_SEPARATOR) l--;
 890
 891         return g_strndup(path, l);
 892 }
 893
 894 static void tab_completion_select_cancel_cb(FileDialog *fd, gpointer data)
 895 {
 896         TabCompData *td = data;
 897
 898         td->fd = NULL;
 899         file_dialog_close(fd);
 900 }
 901
 902 static void tab_completion_select_ok_cb(FileDialog *fd, gpointer data)
 903 {
 904         TabCompData *td = data;
 905
 906         gtk_entry_set_text(GTK_ENTRY(td->entry), gtk_entry_get_text(GTK_ENTRY(fd->entry)));
 907
 908         tab_completion_select_cancel_cb(fd, data);
 909
 910         tab_completion_emit_enter_signal(td);
 911 }
 912
 913 static void tab_completion_select_show(TabCompData *td)
 914 {
 915         const gchar *title;
 916         const gchar *path;
 917
 918         if (td->fd)
 919                 {
 920                 gtk_window_present(GTK_WINDOW(GENERIC_DIALOG(td->fd)->dialog));
 921                 return;
 922                 }
 923
 924         title = (td->fd_title) ? td->fd_title : _("Select path");
 925         td->fd = file_dialog_new(title, "select_path", td->entry,
 926                                  tab_completion_select_cancel_cb, td);
 927         file_dialog_add_button(td->fd, GTK_STOCK_OK, NULL,
 928                                  tab_completion_select_ok_cb, TRUE);
 929
 930         generic_dialog_add_message(GENERIC_DIALOG(td->fd), NULL, title, NULL);
 931
 932         path = gtk_entry_get_text(GTK_ENTRY(td->entry));
 933         if (strlen(path) == 0) path = NULL;
 934         if (td->fd_folders_only)
 935                 {
 936                 file_dialog_add_path_widgets(td->fd, NULL, path, td->history_key, NULL, NULL);
 937                 }
 938         else
 939                 {
 940                 file_dialog_add_path_widgets(td->fd, NULL, path, td->history_key, "*", _("All files"));
 941                 }
 942
 943         gtk_widget_show(GENERIC_DIALOG(td->fd)->dialog);
 944 }
 945
 946 static void tab_completion_select_pressed(GtkWidget *widget, gpointer data)
 947 {
 948         TabCompData *td = data;
 949
 950         tab_completion_select_show(td);
 951 }
 952
 953 void tab_completion_add_select_button(GtkWidget *entry, const gchar *title, gboolean folders_only)
 954 {
 955         TabCompData *td;
 956         GtkWidget *parent;
 957         GtkWidget *hbox;
 958
 959         td = g_object_get_data(G_OBJECT(entry), "tab_completion_data");
 960
 961         if (!td) return;
 962
 963         g_free(td->fd_title);
 964         td->fd_title = g_strdup(title);
 965         td->fd_folders_only = folders_only;
 966
 967         if (td->fd_button) return;
 968
 969         parent = (td->combo) ? td->combo : td->entry;
 970
 971         hbox = gtk_widget_get_parent(parent);
 972         if (!GTK_IS_BOX(hbox)) return;
 973
 974         td->fd_button = gtk_button_new_with_label("...");
 975         g_signal_connect(G_OBJECT(td->fd_button), "size_allocate",
 976                          G_CALLBACK(tab_completion_button_size_allocate), parent);
 977         g_signal_connect(G_OBJECT(td->fd_button), "clicked",
 978                          G_CALLBACK(tab_completion_select_pressed), td);
 979
 980         gtk_box_pack_start(GTK_BOX(hbox), td->fd_button, FALSE, FALSE, 0);
 981
 982         gtk_widget_show(td->fd_button);
 983 }
 984 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */