contrib/dialog/fselect.c

   1 /*
   2  *  $Id: fselect.c,v 1.93 2012/12/30 20:52:25 tom Exp $
   3  *
   4  *  fselect.c -- implements the file-selector box
   5  *
   6  *  Copyright 2000-2011,2012    Thomas E. Dickey
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU Lesser General Public License, version 2.1
  10  *  as published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful, but
  13  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *  Lesser General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Lesser General Public
  18  *  License along with this program; if not, write to
  19  *      Free Software Foundation, Inc.
  20  *      51 Franklin St., Fifth Floor
  21  *      Boston, MA 02110, USA.
  22  */
  23
  24 #include <dialog.h>
  25 #include <dlg_keys.h>
  26
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29
  30 #if HAVE_DIRENT_H
  31 # include <dirent.h>
  32 # define NAMLEN(dirent) strlen((dirent)->d_name)
  33 #else
  34 # define dirent direct
  35 # define NAMLEN(dirent) (dirent)->d_namlen
  36 # if HAVE_SYS_NDIR_H
  37 #  include <sys/ndir.h>
  38 # endif
  39 # if HAVE_SYS_DIR_H
  40 #  include <sys/dir.h>
  41 # endif
  42 # if HAVE_NDIR_H
  43 #  include <ndir.h>
  44 # endif
  45 #endif
  46
  47 # if defined(_FILE_OFFSET_BITS) && defined(HAVE_STRUCT_DIRENT64)
  48 #  if !defined(_LP64) && (_FILE_OFFSET_BITS == 64)
  49 #   define      DIRENT  struct dirent64
  50 #  else
  51 #   define      DIRENT  struct dirent
  52 #  endif
  53 # else
  54 #  define       DIRENT  struct dirent
  55 # endif
  56
  57 #define EXT_WIDE 1
  58 #define HDR_HIGH 1
  59 #define BTN_HIGH (1 + 2 * MARGIN)       /* Ok/Cancel, also input-box */
  60 #define MIN_HIGH (HDR_HIGH - MARGIN + (BTN_HIGH * 2) + 4 * MARGIN)
  61 #define MIN_WIDE (2 * MAX(dlg_count_columns(d_label), dlg_count_columns(f_label)) + 6 * MARGIN + 2 * EXT_WIDE)
  62
  63 #define MOUSE_D (KEY_MAX + 0)
  64 #define MOUSE_F (KEY_MAX + 10000)
  65 #define MOUSE_T (KEY_MAX + 20000)
  66
  67 typedef enum {
  68     sDIRS = -3
  69     ,sFILES = -2
  70     ,sTEXT = -1
  71 } STATES;
  72
  73 typedef struct {
  74     WINDOW *par;                /* parent window */
  75     WINDOW *win;                /* this window */
  76     int length;                 /* length of the data[] array */
  77     int offset;                 /* index of first item on screen */
  78     int choice;                 /* index of the selection */
  79     int mousex;                 /* base of mouse-code return-values */
  80     unsigned allocd;
  81     char **data;
  82 } LIST;
  83
  84 typedef struct {
  85     int length;
  86     char **data;
  87 } MATCH;
  88
  89 static void
  90 init_list(LIST * list, WINDOW *par, WINDOW *win, int mousex)
  91 {
  92     list->par = par;
  93     list->win = win;
  94     list->length = 0;
  95     list->offset = 0;
  96     list->choice = 0;
  97     list->mousex = mousex;
  98     list->allocd = 0;
  99     list->data = 0;
 100     dlg_mouse_mkbigregion(getbegy(win), getbegx(win),
 101                           getmaxy(win), getmaxx(win),
 102                           mousex, 1, 1, 1 /* by lines */ );
 103 }
 104
 105 static char *
 106 leaf_of(char *path)
 107 {
 108     char *leaf = strrchr(path, '/');
 109     if (leaf != 0)
 110         leaf++;
 111     else
 112         leaf = path;
 113     return leaf;
 114 }
 115
 116 static char *
 117 data_of(LIST * list)
 118 {
 119     if (list != 0
 120         && list->data != 0)
 121         return list->data[list->choice];
 122     return 0;
 123 }
 124
 125 static void
 126 free_list(LIST * list, int reinit)
 127 {
 128     int n;
 129
 130     if (list->data != 0) {
 131         for (n = 0; list->data[n] != 0; n++)
 132             free(list->data[n]);
 133         free(list->data);
 134         list->data = 0;
 135     }
 136     if (reinit)
 137         init_list(list, list->par, list->win, list->mousex);
 138 }
 139
 140 static void
 141 add_to_list(LIST * list, char *text)
 142 {
 143     unsigned need;
 144
 145     need = (unsigned) (list->length + 1);
 146     if (need + 1 > list->allocd) {
 147         list->allocd = 2 * (need + 1);
 148         if (list->data == 0) {
 149             list->data = dlg_malloc(char *, list->allocd);
 150         } else {
 151             list->data = dlg_realloc(char *, list->allocd, list->data);
 152         }
 153         assert_ptr(list->data, "add_to_list");
 154     }
 155     list->data[list->length++] = dlg_strclone(text);
 156     list->data[list->length] = 0;
 157 }
 158
 159 static void
 160 keep_visible(LIST * list)
 161 {
 162     int high = getmaxy(list->win);
 163
 164     if (list->choice < list->offset) {
 165         list->offset = list->choice;
 166     }
 167     if (list->choice - list->offset >= high)
 168         list->offset = list->choice - high + 1;
 169 }
 170
 171 #define Value(c) (int)((c) & 0xff)
 172
 173 static int
 174 find_choice(char *target, LIST * list)
 175 {
 176     int n;
 177     int choice = list->choice;
 178     int len_1, len_2, cmp_1, cmp_2;
 179
 180     if (*target == 0) {
 181         list->choice = 0;
 182     } else {
 183         /* find the match with the longest length.  If more than one has the
 184          * same length, choose the one with the closest match of the final
 185          * character.
 186          */
 187         len_1 = 0;
 188         cmp_1 = 256;
 189         for (n = 0; n < list->length; n++) {
 190             char *a = target;
 191             char *b = list->data[n];
 192
 193             len_2 = 0;
 194             while ((*a != 0) && (*b != 0) && (*a == *b)) {
 195                 a++;
 196                 b++;
 197                 len_2++;
 198             }
 199             cmp_2 = Value(*a) - Value(*b);
 200             if (cmp_2 < 0)
 201                 cmp_2 = -cmp_2;
 202             if ((len_2 > len_1)
 203                 || (len_1 == len_2 && cmp_2 < cmp_1)) {
 204                 len_1 = len_2;
 205                 cmp_1 = cmp_2;
 206                 list->choice = n;
 207             }
 208         }
 209     }
 210     if (choice != list->choice) {
 211         keep_visible(list);
 212     }
 213     return (choice != list->choice);
 214 }
 215
 216 static void
 217 display_list(LIST * list)
 218 {
 219     int n;
 220     int x;
 221     int y;
 222     int top;
 223     int bottom;
 224
 225     if (list->win != 0) {
 226         dlg_attr_clear(list->win, getmaxy(list->win), getmaxx(list->win), item_attr);
 227         for (n = list->offset; n < list->length && list->data[n]; n++) {
 228             y = n - list->offset;
 229             if (y >= getmaxy(list->win))
 230                 break;
 231             (void) wmove(list->win, y, 0);
 232             if (n == list->choice)
 233                 (void) wattrset(list->win, item_selected_attr);
 234             (void) waddstr(list->win, list->data[n]);
 235             (void) wattrset(list->win, item_attr);
 236         }
 237         (void) wattrset(list->win, item_attr);
 238
 239         getparyx(list->win, y, x);
 240
 241         top = y - 1;
 242         bottom = y + getmaxy(list->win);
 243         dlg_draw_scrollbar(list->par,
 244                            (long) list->offset,
 245                            (long) list->offset,
 246                            (long) (list->offset + getmaxy(list->win)),
 247                            (long) (list->length),
 248                            x + 1,
 249                            x + getmaxx(list->win),
 250                            top,
 251                            bottom,
 252                            menubox_border2_attr,
 253                            menubox_border_attr);
 254
 255         (void) wmove(list->win, list->choice - list->offset, 0);
 256         (void) wnoutrefresh(list->win);
 257     }
 258 }
 259
 260 /* FIXME: see arrows.c
 261  * This workaround is used to allow two lists to have scroll-tabs at the same
 262  * time, by reassigning their return-values to be different.  Just for
 263  * readability, we use the names of keys with similar connotations, though all
 264  * that is really required is that they're distinct, so we can put them in a
 265  * switch statement.
 266  */
 267 static void
 268 fix_arrows(LIST * list)
 269 {
 270     int x;
 271     int y;
 272     int top;
 273     int right;
 274     int bottom;
 275
 276     if (list->win != 0) {
 277         getparyx(list->win, y, x);
 278         top = y - 1;
 279         right = getmaxx(list->win);
 280         bottom = y + getmaxy(list->win);
 281
 282         mouse_mkbutton(top, x, right,
 283                        ((list->mousex == MOUSE_D)
 284                         ? KEY_PREVIOUS
 285                         : KEY_PPAGE));
 286         mouse_mkbutton(bottom, x, right,
 287                        ((list->mousex == MOUSE_D)
 288                         ? KEY_NEXT
 289                         : KEY_NPAGE));
 290     }
 291 }
 292
 293 static int
 294 show_list(char *target, LIST * list, int keep)
 295 {
 296     int changed = keep || find_choice(target, list);
 297     display_list(list);
 298     return changed;
 299 }
 300
 301 /*
 302  * Highlight the closest match to 'target' in the given list, setting offset
 303  * to match.
 304  */
 305 static int
 306 show_both_lists(char *input, LIST * d_list, LIST * f_list, int keep)
 307 {
 308     char *leaf = leaf_of(input);
 309
 310     return show_list(leaf, d_list, keep) | show_list(leaf, f_list, keep);
 311 }
 312
 313 /*
 314  * Move up/down in the given list
 315  */
 316 static bool
 317 change_list(int choice, LIST * list)
 318 {
 319     if (data_of(list) != 0) {
 320         int last = list->length - 1;
 321
 322         choice += list->choice;
 323         if (choice < 0)
 324             choice = 0;
 325         if (choice > last)
 326             choice = last;
 327         list->choice = choice;
 328         keep_visible(list);
 329         display_list(list);
 330         return TRUE;
 331     }
 332     return FALSE;
 333 }
 334
 335 static void
 336 scroll_list(int direction, LIST * list)
 337 {
 338     if (data_of(list) != 0) {
 339         int length = getmaxy(list->win);
 340         if (change_list(direction * length, list))
 341             return;
 342     }
 343     beep();
 344 }
 345
 346 static int
 347 compar(const void *a, const void *b)
 348 {
 349     return strcmp(*(const char *const *) a, *(const char *const *) b);
 350 }
 351
 352 static void
 353 match(char *name, LIST * d_list, LIST * f_list, MATCH * match_list)
 354 {
 355     char *test = leaf_of(name);
 356     size_t test_len = strlen(test);
 357     char **matches = dlg_malloc(char *, (size_t) (d_list->length + f_list->length));
 358     size_t data_len = 0;
 359     int i;
 360     for (i = 2; i < d_list->length; i++) {
 361         if (strncmp(test, d_list->data[i], test_len) == 0) {
 362             matches[data_len++] = d_list->data[i];
 363         }
 364     }
 365     for (i = 0; i < f_list->length; i++) {
 366         if (strncmp(test, f_list->data[i], test_len) == 0) {
 367             matches[data_len++] = f_list->data[i];
 368         }
 369     }
 370     matches = dlg_realloc(char *, data_len + 1, matches);
 371     match_list->data = matches;
 372     match_list->length = (int) data_len;
 373 }
 374
 375 static void
 376 free_match(MATCH * match_list)
 377 {
 378     free(match_list->data);
 379     match_list->length = 0;
 380 }
 381
 382 static int
 383 complete(char *name, LIST * d_list, LIST * f_list, char **buff_ptr)
 384 {
 385     MATCH match_list;
 386     char *test;
 387     size_t test_len;
 388     size_t i;
 389     int j;
 390     char *buff;
 391
 392     match(name, d_list, f_list, &match_list);
 393     if (match_list.length == 0) {
 394         *buff_ptr = NULL;
 395         return 0;
 396     }
 397
 398     test = match_list.data[0];
 399     test_len = strlen(test);
 400     buff = dlg_malloc(char, test_len + 2);
 401     if (match_list.length == 1) {
 402         strcpy(buff, test);
 403         i = test_len;
 404         if (test == data_of(d_list)) {
 405             buff[test_len] = '/';
 406             i++;
 407         }
 408     } else {
 409         for (i = 0; i < test_len; i++) {
 410             char test_char = test[i];
 411             if (test_char == '\0')
 412                 break;
 413             for (j = 0; j < match_list.length; j++) {
 414                 if (match_list.data[j][i] != test_char) {
 415                     break;
 416                 }
 417             }
 418             if (j == match_list.length) {
 419                 (buff)[i] = test_char;
 420             } else
 421                 break;
 422         }
 423         buff = dlg_realloc(char, i + 1, buff);
 424     }
 425     free_match(&match_list);
 426     buff[i] = '\0';
 427     *buff_ptr = buff;
 428     return (i != 0);
 429 }
 430
 431 static bool
 432 fill_lists(char *current, char *input, LIST * d_list, LIST * f_list, int keep)
 433 {
 434     bool result = TRUE;
 435     bool rescan = FALSE;
 436     DIR *dp;
 437     DIRENT *de;
 438     struct stat sb;
 439     int n;
 440     char path[MAX_LEN + 1];
 441     char *leaf;
 442
 443     /* check if we've updated the lists */
 444     for (n = 0; current[n] && input[n]; n++) {
 445         if (current[n] != input[n])
 446             break;
 447     }
 448
 449     if (current[n] == input[n]) {
 450         result = FALSE;
 451         rescan = (n == 0 && d_list->length == 0);
 452     } else if (strchr(current + n, '/') == 0
 453                && strchr(input + n, '/') == 0) {
 454         result = show_both_lists(input, d_list, f_list, keep);
 455     } else {
 456         rescan = TRUE;
 457     }
 458
 459     if (rescan) {
 460         size_t have = strlen(input);
 461
 462         if (have > MAX_LEN)
 463             have = MAX_LEN;
 464         memcpy(current, input, have);
 465         current[have] = '\0';
 466
 467         /* refill the lists */
 468         free_list(d_list, TRUE);
 469         free_list(f_list, TRUE);
 470         memcpy(path, current, have);
 471         path[have] = '\0';
 472         if ((leaf = strrchr(path, '/')) != 0) {
 473             *++leaf = 0;
 474         } else {
 475             strcpy(path, "./");
 476             leaf = path + strlen(path);
 477         }
 478         dlg_trace_msg("opendir '%s'\n", path);
 479         if ((dp = opendir(path)) != 0) {
 480             while ((de = readdir(dp)) != 0) {
 481                 strncpy(leaf, de->d_name, NAMLEN(de))[NAMLEN(de)] = 0;
 482                 if (stat(path, &sb) == 0) {
 483                     if ((sb.st_mode & S_IFMT) == S_IFDIR)
 484                         add_to_list(d_list, leaf);
 485                     else if (f_list->win)
 486                         add_to_list(f_list, leaf);
 487                 }
 488             }
 489             (void) closedir(dp);
 490             /* sort the lists */
 491             if (d_list->data != 0 && d_list->length > 1) {
 492                 qsort(d_list->data,
 493                       (size_t) d_list->length,
 494                       sizeof(d_list->data[0]),
 495                       compar);
 496             }
 497             if (f_list->data != 0 && f_list->length > 1) {
 498                 qsort(f_list->data,
 499                       (size_t) f_list->length,
 500                       sizeof(f_list->data[0]),
 501                       compar);
 502             }
 503         }
 504
 505         (void) show_both_lists(input, d_list, f_list, FALSE);
 506         d_list->offset = d_list->choice;
 507         f_list->offset = f_list->choice;
 508         result = TRUE;
 509     }
 510     return result;
 511 }
 512
 513 static bool
 514 usable_state(int state, LIST * dirs, LIST * files)
 515 {
 516     bool result;
 517
 518     switch (state) {
 519     case sDIRS:
 520         result = (dirs->win != 0) && (data_of(dirs) != 0);
 521         break;
 522     case sFILES:
 523         result = (files->win != 0) && (data_of(files) != 0);
 524         break;
 525     default:
 526         result = TRUE;
 527         break;
 528     }
 529     return result;
 530 }
 531
 532 #define which_list() ((state == sFILES) \
 533                         ? &f_list \
 534                         : ((state == sDIRS) \
 535                           ? &d_list \
 536                           : 0))
 537 #define NAVIGATE_BINDINGS \
 538         DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ), \
 539         DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), \
 540         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), \
 541         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  KEY_DOWN ), \
 542         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  CHR_NEXT ), \
 543         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  KEY_NEXT ), \
 544         DLG_KEYS_DATA( DLGK_ITEM_PREV,  CHR_PREVIOUS ), \
 545         DLG_KEYS_DATA( DLGK_ITEM_PREV,  KEY_UP ), \
 546         DLG_KEYS_DATA( DLGK_PAGE_NEXT,  KEY_NPAGE ), \
 547         DLG_KEYS_DATA( DLGK_PAGE_PREV,  KEY_PPAGE )
 548
 549 /*
 550  * Display a dialog box for entering a filename
 551  */
 552 static int
 553 dlg_fselect(const char *title, const char *path, int height, int width, int dselect)
 554 {
 555     /* *INDENT-OFF* */
 556     static DLG_KEYS_BINDING binding[] = {
 557         HELPKEY_BINDINGS,
 558         ENTERKEY_BINDINGS,
 559         NAVIGATE_BINDINGS,
 560         END_KEYS_BINDING
 561     };
 562     static DLG_KEYS_BINDING binding2[] = {
 563         INPUTSTR_BINDINGS,
 564         HELPKEY_BINDINGS,
 565         ENTERKEY_BINDINGS,
 566         NAVIGATE_BINDINGS,
 567         END_KEYS_BINDING
 568     };
 569     /* *INDENT-ON* */
 570
 571 #ifdef KEY_RESIZE
 572     int old_height = height;
 573     int old_width = width;
 574     bool resized = FALSE;
 575 #endif
 576     int tbox_y, tbox_x, tbox_width, tbox_height;
 577     int dbox_y, dbox_x, dbox_width, dbox_height;
 578     int fbox_y, fbox_x, fbox_width, fbox_height;
 579     int show_buttons = TRUE;
 580     int offset = 0;
 581     int key = 0;
 582     int fkey = FALSE;
 583     int code;
 584     int result = DLG_EXIT_UNKNOWN;
 585     int state = dialog_vars.default_button >= 0 ? dlg_default_button() : sTEXT;
 586     int button;
 587     int first = (state == sTEXT);
 588     int first_trace = TRUE;
 589     char *input;
 590     char *completed;
 591     char current[MAX_LEN + 1];
 592     WINDOW *dialog = 0;
 593     WINDOW *w_text = 0;
 594     WINDOW *w_work = 0;
 595     const char **buttons = dlg_ok_labels();
 596     const char *d_label = _("Directories");
 597     const char *f_label = _("Files");
 598     char *partial = 0;
 599     int min_wide = MIN_WIDE;
 600     int min_items = height ? 0 : 4;
 601     LIST d_list, f_list;
 602
 603     dlg_does_output();
 604
 605     /* Set up the initial value */
 606     input = dlg_set_result(path);
 607     offset = (int) strlen(input);
 608     *current = 0;
 609
 610     dlg_button_layout(buttons, &min_wide);
 611
 612 #ifdef KEY_RESIZE
 613   retry:
 614 #endif
 615     dlg_auto_size(title, (char *) 0, &height, &width, 6, 25);
 616     height += MIN_HIGH + min_items;
 617     if (width < min_wide)
 618         width = min_wide;
 619     dlg_print_size(height, width);
 620     dlg_ctl_size(height, width);
 621
 622     dialog = dlg_new_window(height, width,
 623                             dlg_box_y_ordinate(height),
 624                             dlg_box_x_ordinate(width));
 625     dlg_register_window(dialog, "fselect", binding);
 626     dlg_register_buttons(dialog, "fselect", buttons);
 627
 628     dlg_mouse_setbase(0, 0);
 629
 630     dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
 631     dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
 632     dlg_draw_title(dialog, title);
 633
 634     (void) wattrset(dialog, dialog_attr);
 635
 636     /* Draw the input field box */
 637     tbox_height = 1;
 638     tbox_width = width - (4 * MARGIN + 2);
 639     tbox_y = height - (BTN_HIGH * 2) + MARGIN;
 640     tbox_x = (width - tbox_width) / 2;
 641
 642     w_text = derwin(dialog, tbox_height, tbox_width, tbox_y, tbox_x);
 643     if (w_text == 0) {
 644         result = DLG_EXIT_ERROR;
 645         goto finish;
 646     }
 647
 648     (void) keypad(w_text, TRUE);
 649     dlg_draw_box(dialog, tbox_y - MARGIN, tbox_x - MARGIN,
 650                  (2 * MARGIN + 1), tbox_width + (MARGIN + EXT_WIDE),
 651                  menubox_border_attr, menubox_border2_attr);
 652     dlg_mouse_mkbigregion(getbegy(dialog) + tbox_y - MARGIN,
 653                           getbegx(dialog) + tbox_x - MARGIN,
 654                           1 + (2 * MARGIN),
 655                           tbox_width + (MARGIN + EXT_WIDE),
 656                           MOUSE_T, 1, 1, 3 /* doesn't matter */ );
 657
 658     dlg_register_window(w_text, "fselect2", binding2);
 659
 660     /* Draw the directory listing box */
 661     if (dselect)
 662         dbox_width = (width - (6 * MARGIN));
 663     else
 664         dbox_width = (width - (6 * MARGIN + 2 * EXT_WIDE)) / 2;
 665     dbox_height = height - MIN_HIGH;
 666     dbox_y = (2 * MARGIN + 1);
 667     dbox_x = tbox_x;
 668
 669     w_work = derwin(dialog, dbox_height, dbox_width, dbox_y, dbox_x);
 670     if (w_work == 0) {
 671         result = DLG_EXIT_ERROR;
 672         goto finish;
 673     }
 674
 675     (void) keypad(w_work, TRUE);
 676     (void) mvwaddstr(dialog, dbox_y - (MARGIN + 1), dbox_x - MARGIN, d_label);
 677     dlg_draw_box(dialog,
 678                  dbox_y - MARGIN, dbox_x - MARGIN,
 679                  dbox_height + (MARGIN + 1), dbox_width + (MARGIN + 1),
 680                  menubox_border_attr, menubox_border2_attr);
 681     init_list(&d_list, dialog, w_work, MOUSE_D);
 682
 683     if (!dselect) {
 684         /* Draw the filename listing box */
 685         fbox_height = dbox_height;
 686         fbox_width = dbox_width;
 687         fbox_y = dbox_y;
 688         fbox_x = tbox_x + dbox_width + (2 * MARGIN);
 689
 690         w_work = derwin(dialog, fbox_height, fbox_width, fbox_y, fbox_x);
 691         if (w_work == 0) {
 692             result = DLG_EXIT_ERROR;
 693             goto finish;
 694         }
 695
 696         (void) keypad(w_work, TRUE);
 697         (void) mvwaddstr(dialog, fbox_y - (MARGIN + 1), fbox_x - MARGIN, f_label);
 698         dlg_draw_box(dialog,
 699                      fbox_y - MARGIN, fbox_x - MARGIN,
 700                      fbox_height + (MARGIN + 1), fbox_width + (MARGIN + 1),
 701                      menubox_border_attr, menubox_border2_attr);
 702         init_list(&f_list, dialog, w_work, MOUSE_F);
 703     } else {
 704         memset(&f_list, 0, sizeof(f_list));
 705     }
 706
 707     while (result == DLG_EXIT_UNKNOWN) {
 708
 709         if (fill_lists(current, input, &d_list, &f_list, state < sTEXT))
 710             show_buttons = TRUE;
 711
 712 #ifdef KEY_RESIZE
 713         if (resized) {
 714             resized = FALSE;
 715             dlg_show_string(w_text, input, offset, inputbox_attr,
 716                             0, 0, tbox_width, (bool) 0, (bool) first);
 717         }
 718 #endif
 719
 720         /*
 721          * The last field drawn determines where the cursor is shown:
 722          */
 723         if (show_buttons) {
 724             show_buttons = FALSE;
 725             button = (state < 0) ? 0 : state;
 726             dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
 727         }
 728
 729         if (first_trace) {
 730             first_trace = FALSE;
 731             dlg_trace_win(dialog);
 732         }
 733
 734         if (state < 0) {
 735             switch (state) {
 736             case sTEXT:
 737                 dlg_set_focus(dialog, w_text);
 738                 break;
 739             case sFILES:
 740                 dlg_set_focus(dialog, f_list.win);
 741                 break;
 742             case sDIRS:
 743                 dlg_set_focus(dialog, d_list.win);
 744                 break;
 745             }
 746         }
 747
 748         if (first) {
 749             (void) wrefresh(dialog);
 750         } else {
 751             fix_arrows(&d_list);
 752             fix_arrows(&f_list);
 753             key = dlg_mouse_wgetch((state == sTEXT) ? w_text : dialog, &fkey);
 754             if (dlg_result_key(key, fkey, &result))
 755                 break;
 756         }
 757
 758         if (!fkey && key == ' ') {
 759             key = DLGK_SELECT;
 760             fkey = TRUE;
 761         }
 762
 763         if (fkey) {
 764             switch (key) {
 765             case DLGK_MOUSE(KEY_PREVIOUS):
 766                 state = sDIRS;
 767                 scroll_list(-1, which_list());
 768                 continue;
 769             case DLGK_MOUSE(KEY_NEXT):
 770                 state = sDIRS;
 771                 scroll_list(1, which_list());
 772                 continue;
 773             case DLGK_MOUSE(KEY_PPAGE):
 774                 state = sFILES;
 775                 scroll_list(-1, which_list());
 776                 continue;
 777             case DLGK_MOUSE(KEY_NPAGE):
 778                 state = sFILES;
 779                 scroll_list(1, which_list());
 780                 continue;
 781             case DLGK_PAGE_PREV:
 782                 scroll_list(-1, which_list());
 783                 continue;
 784             case DLGK_PAGE_NEXT:
 785                 scroll_list(1, which_list());
 786                 continue;
 787             case DLGK_ITEM_PREV:
 788                 if (change_list(-1, which_list()))
 789                     continue;
 790                 /* FALLTHRU */
 791             case DLGK_FIELD_PREV:
 792                 show_buttons = TRUE;
 793                 do {
 794                     state = dlg_prev_ok_buttonindex(state, sDIRS);
 795                 } while (!usable_state(state, &d_list, &f_list));
 796                 continue;
 797             case DLGK_ITEM_NEXT:
 798                 if (change_list(1, which_list()))
 799                     continue;
 800                 /* FALLTHRU */
 801             case DLGK_FIELD_NEXT:
 802                 show_buttons = TRUE;
 803                 do {
 804                     state = dlg_next_ok_buttonindex(state, sDIRS);
 805                 } while (!usable_state(state, &d_list, &f_list));
 806                 continue;
 807             case DLGK_SELECT:
 808                 completed = 0;
 809                 if (partial != 0) {
 810                     free(partial);
 811                     partial = 0;
 812                 }
 813                 if (state == sFILES && !dselect) {
 814                     completed = data_of(&f_list);
 815                 } else if (state == sDIRS) {
 816                     completed = data_of(&d_list);
 817                 } else {
 818                     if (complete(input, &d_list, &f_list, &partial)) {
 819                         completed = partial;
 820                     }
 821                 }
 822                 if (completed != 0) {
 823                     state = sTEXT;
 824                     show_buttons = TRUE;
 825                     strcpy(leaf_of(input), completed);
 826                     offset = (int) strlen(input);
 827                     dlg_show_string(w_text, input, offset, inputbox_attr,
 828                                     0, 0, tbox_width, 0, first);
 829                     if (partial != NULL) {
 830                         free(partial);
 831                         partial = 0;
 832                     }
 833                     continue;
 834                 } else {        /* if (state < sTEXT) */
 835                     (void) beep();
 836                     continue;
 837                 }
 838                 /* FALLTHRU */
 839             case DLGK_ENTER:
 840                 result = (state > 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK;
 841                 continue;
 842 #ifdef KEY_RESIZE
 843             case KEY_RESIZE:
 844                 /* reset data */
 845                 height = old_height;
 846                 width = old_width;
 847                 show_buttons = TRUE;
 848                 *current = 0;
 849                 resized = TRUE;
 850                 /* repaint */
 851                 dlg_clear();
 852                 dlg_del_window(dialog);
 853                 refresh();
 854                 dlg_mouse_free_regions();
 855                 goto retry;
 856 #endif
 857             default:
 858                 if (key >= DLGK_MOUSE(MOUSE_T)) {
 859                     state = sTEXT;
 860                     continue;
 861                 } else if (key >= DLGK_MOUSE(MOUSE_F)) {
 862                     if (f_list.win != 0) {
 863                         state = sFILES;
 864                         f_list.choice = (key - DLGK_MOUSE(MOUSE_F)) + f_list.offset;
 865                         display_list(&f_list);
 866                     }
 867                     continue;
 868                 } else if (key >= DLGK_MOUSE(MOUSE_D)) {
 869                     if (d_list.win != 0) {
 870                         state = sDIRS;
 871                         d_list.choice = (key - DLGK_MOUSE(MOUSE_D)) + d_list.offset;
 872                         display_list(&d_list);
 873                     }
 874                     continue;
 875                 } else if (is_DLGK_MOUSE(key)
 876                            && (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
 877                     result = code;
 878                     continue;
 879                 }
 880                 break;
 881             }
 882         }
 883
 884         if (state < 0) {        /* Input box selected if we're editing */
 885             int edit = dlg_edit_string(input, &offset, key, fkey, first);
 886
 887             if (edit) {
 888                 dlg_show_string(w_text, input, offset, inputbox_attr,
 889                                 0, 0, tbox_width, 0, first);
 890                 first = FALSE;
 891                 state = sTEXT;
 892             }
 893         } else if (state >= 0 &&
 894                    (code = dlg_char_to_button(key, buttons)) >= 0) {
 895             result = dlg_ok_buttoncode(code);
 896             break;
 897         }
 898     }
 899
 900     dlg_unregister_window(w_text);
 901     dlg_del_window(dialog);
 902     dlg_mouse_free_regions();
 903     free_list(&d_list, FALSE);
 904     free_list(&f_list, FALSE);
 905
 906   finish:
 907     if (partial != 0)
 908         free(partial);
 909     return result;
 910 }
 911
 912 /*
 913  * Display a dialog box for entering a filename
 914  */
 915 int
 916 dialog_fselect(const char *title, const char *path, int height, int width)
 917 {
 918     return dlg_fselect(title, path, height, width, FALSE);
 919 }
 920
 921 /*
 922  * Display a dialog box for entering a directory
 923  */
 924 int
 925 dialog_dselect(const char *title, const char *path, int height, int width)
 926 {
 927     return dlg_fselect(title, path, height, width, TRUE);
 928 }