contrib/dialog/menubox.c

   1 /*
   2  *  $Id: menubox.c,v 1.149 2015/01/25 23:53:43 tom Exp $
   3  *
   4  *  menubox.c -- implements the menu box
   5  *
   6  *  Copyright 2000-2013,2015    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 Licens, version 2.1e
  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  *  An earlier version of this program lists as authors
  24  *      Savio Lam (lam836@cs.cuhk.hk)
  25  */
  26
  27 #include <dialog.h>
  28 #include <dlg_keys.h>
  29
  30 typedef enum {
  31     Unselected = 0,
  32     Selected,
  33     Editing
  34 } Mode;
  35
  36 typedef struct {
  37     /* the outer-window */
  38     WINDOW *dialog;
  39     int box_y;
  40     int box_x;
  41     int tag_x;
  42     int item_x;
  43     int menu_height;
  44     int menu_width;
  45     /* the inner-window */
  46     WINDOW *menu;
  47     DIALOG_LISTITEM *items;
  48     int item_no;
  49 } ALL_DATA;
  50
  51 #define MIN_HIGH  (1 + (5 * MARGIN))
  52
  53 #define INPUT_ROWS     3        /* rows per inputmenu entry */
  54
  55 #define RowHeight(i) (is_inputmenu ? ((i) * INPUT_ROWS) : ((i) * 1))
  56 #define ItemToRow(i) (is_inputmenu ? ((i) * INPUT_ROWS + 1) : (i))
  57 #define RowToItem(i) (is_inputmenu ? ((i) / INPUT_ROWS + 0) : (i))
  58
  59 /*
  60  * Print menu item
  61  */
  62 static void
  63 print_item(ALL_DATA * data,
  64            WINDOW *win,
  65            DIALOG_LISTITEM * item,
  66            int choice,
  67            Mode selected,
  68            bool is_inputmenu)
  69 {
  70     chtype save = dlg_get_attrs(win);
  71     int n;
  72     int climit = (data->item_x - data->tag_x - GUTTER);
  73     int my_width = data->menu_width;
  74     int my_x = data->item_x;
  75     int my_y = ItemToRow(choice);
  76     bool both = (!dialog_vars.no_tags && !dialog_vars.no_items);
  77     bool first = TRUE;
  78     chtype bordchar;
  79     const char *show = (dialog_vars.no_items
  80                         ? item->name
  81                         : item->text);
  82
  83     switch (selected) {
  84     default:
  85     case Unselected:
  86         bordchar = item_attr;
  87         break;
  88     case Selected:
  89         bordchar = item_selected_attr;
  90         break;
  91     case Editing:
  92         bordchar = dialog_attr;
  93         break;
  94     }
  95
  96     /* Clear 'residue' of last item and mark current current item */
  97     if (is_inputmenu) {
  98         (void) wattrset(win, (selected != Unselected) ? item_selected_attr : item_attr);
  99         for (n = my_y - 1; n < my_y + INPUT_ROWS - 1; n++) {
 100             wmove(win, n, 0);
 101             wprintw(win, "%*s", my_width, " ");
 102         }
 103     } else {
 104         (void) wattrset(win, menubox_attr);
 105         wmove(win, my_y, 0);
 106         wprintw(win, "%*s", my_width, " ");
 107     }
 108
 109     /* highlight first char of the tag to be special */
 110     if (both) {
 111         (void) wmove(win, my_y, data->tag_x);
 112         dlg_print_listitem(win, item->name, climit, first, selected);
 113         first = FALSE;
 114     }
 115
 116     /* Draw the input field box (only for inputmenu) */
 117     (void) wmove(win, my_y, my_x);
 118     if (is_inputmenu) {
 119         my_width -= 1;
 120         dlg_draw_box(win, my_y - 1, my_x, INPUT_ROWS, my_width - my_x - data->tag_x,
 121                      bordchar,
 122                      bordchar);
 123         my_width -= 1;
 124         ++my_x;
 125     }
 126
 127     /* print actual item */
 128     wmove(win, my_y, my_x);
 129     dlg_print_listitem(win, show, my_width - my_x, first, selected);
 130
 131     if (selected) {
 132         dlg_item_help(item->help);
 133     }
 134     (void) wattrset(win, save);
 135 }
 136
 137 /*
 138  * Allow the user to edit the text of a menu entry.
 139  */
 140 static int
 141 input_menu_edit(ALL_DATA * data,
 142                 DIALOG_LISTITEM * items,
 143                 int choice,
 144                 char **resultp)
 145 {
 146     chtype save = dlg_get_attrs(data->menu);
 147     char *result;
 148     int offset = 0;
 149     int key = 0, fkey = 0;
 150     int first = TRUE;
 151     /* see above */
 152     bool is_inputmenu = TRUE;
 153     int y = ItemToRow(choice);
 154     int code = TRUE;
 155     int max_len = dlg_max_input(MAX((int) strlen(items->text) + 1, MAX_LEN));
 156
 157     result = dlg_malloc(char, (size_t) max_len);
 158     assert_ptr(result, "input_menu_edit");
 159
 160     /* original item is used to initialize the input string. */
 161     result[0] = '\0';
 162     strcpy(result, items->text);
 163
 164     print_item(data, data->menu, items, choice, Editing, TRUE);
 165
 166     /* taken out of inputbox.c - but somewhat modified */
 167     for (;;) {
 168         if (!first)
 169             key = dlg_mouse_wgetch(data->menu, &fkey);
 170         if (dlg_edit_string(result, &offset, key, fkey, first)) {
 171             dlg_show_string(data->menu, result, offset, inputbox_attr,
 172                             y,
 173                             data->item_x + 1,
 174                             data->menu_width - data->item_x - 3,
 175                             FALSE, first);
 176             first = FALSE;
 177         } else if (key == ESC || key == TAB) {
 178             code = FALSE;
 179             break;
 180         } else {
 181             break;
 182         }
 183     }
 184     print_item(data, data->menu, items, choice, Selected, TRUE);
 185     (void) wattrset(data->menu, save);
 186
 187     *resultp = result;
 188     return code;
 189 }
 190
 191 static int
 192 handle_button(int code, DIALOG_LISTITEM * items, int choice)
 193 {
 194     char *help_result;
 195
 196     switch (code) {
 197     case DLG_EXIT_OK:           /* FALLTHRU */
 198     case DLG_EXIT_EXTRA:
 199         dlg_add_string(items[choice].name);
 200         break;
 201     case DLG_EXIT_HELP:
 202         dlg_add_help_listitem(&code, &help_result, &items[choice]);
 203         dlg_add_string(help_result);
 204         break;
 205     }
 206     return code;
 207 }
 208
 209 int
 210 dlg_renamed_menutext(DIALOG_LISTITEM * items, int current, char *newtext)
 211 {
 212     if (dialog_vars.input_result)
 213         dialog_vars.input_result[0] = '\0';
 214     dlg_add_result("RENAMED ");
 215     dlg_add_string(items[current].name);
 216     dlg_add_result(" ");
 217     dlg_add_string(newtext);
 218     return DLG_EXIT_EXTRA;
 219 }
 220
 221 int
 222 dlg_dummy_menutext(DIALOG_LISTITEM * items, int current, char *newtext)
 223 {
 224     (void) items;
 225     (void) current;
 226     (void) newtext;
 227     return DLG_EXIT_ERROR;
 228 }
 229
 230 static void
 231 print_menu(ALL_DATA * data, int choice, int scrollamt, int max_choice, bool is_inputmenu)
 232 {
 233     int i;
 234
 235     for (i = 0; i < max_choice; i++) {
 236         print_item(data,
 237                    data->menu,
 238                    &data->items[i + scrollamt],
 239                    i,
 240                    (i == choice) ? Selected : Unselected,
 241                    is_inputmenu);
 242     }
 243
 244     /* Clean bottom lines */
 245     if (is_inputmenu) {
 246         int spare_lines, x_count;
 247         spare_lines = data->menu_height % INPUT_ROWS;
 248         (void) wattrset(data->menu, menubox_attr);
 249         for (; spare_lines; spare_lines--) {
 250             wmove(data->menu, data->menu_height - spare_lines, 0);
 251             for (x_count = 0; x_count < data->menu_width;
 252                  x_count++) {
 253                 waddch(data->menu, ' ');
 254             }
 255         }
 256     }
 257
 258     (void) wnoutrefresh(data->menu);
 259
 260     dlg_draw_scrollbar(data->dialog,
 261                        scrollamt,
 262                        scrollamt,
 263                        scrollamt + max_choice,
 264                        data->item_no,
 265                        data->box_x,
 266                        data->box_x + data->menu_width,
 267                        data->box_y,
 268                        data->box_y + data->menu_height + 1,
 269                        menubox_border2_attr,
 270                        menubox_border_attr);
 271 }
 272
 273 static bool
 274 check_hotkey(DIALOG_LISTITEM * items, int choice)
 275 {
 276     bool result = FALSE;
 277
 278     if (dlg_match_char(dlg_last_getc(),
 279                        (dialog_vars.no_tags
 280                         ? items[choice].text
 281                         : items[choice].name))) {
 282         result = TRUE;
 283     }
 284     return result;
 285 }
 286
 287 /*
 288  * This is an alternate interface to 'menu' which allows the application
 289  * to read the list item states back directly without putting them in the
 290  * output buffer.
 291  */
 292 int
 293 dlg_menu(const char *title,
 294          const char *cprompt,
 295          int height,
 296          int width,
 297          int menu_height,
 298          int item_no,
 299          DIALOG_LISTITEM * items,
 300          int *current_item,
 301          DIALOG_INPUTMENU rename_menutext)
 302 {
 303     /* *INDENT-OFF* */
 304     static DLG_KEYS_BINDING binding[] = {
 305         HELPKEY_BINDINGS,
 306         ENTERKEY_BINDINGS,
 307         DLG_KEYS_DATA( DLGK_FIELD_NEXT, ' ' ),
 308         DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
 309         DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
 310         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
 311         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
 312         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  '+' ),
 313         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  KEY_DOWN ),
 314         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  CHR_NEXT ),
 315         DLG_KEYS_DATA( DLGK_ITEM_PREV,  '-' ),
 316         DLG_KEYS_DATA( DLGK_ITEM_PREV,  KEY_UP ),
 317         DLG_KEYS_DATA( DLGK_ITEM_PREV,  CHR_PREVIOUS ),
 318         DLG_KEYS_DATA( DLGK_PAGE_FIRST, KEY_HOME ),
 319         DLG_KEYS_DATA( DLGK_PAGE_LAST,  KEY_END ),
 320         DLG_KEYS_DATA( DLGK_PAGE_LAST,  KEY_LL ),
 321         DLG_KEYS_DATA( DLGK_PAGE_NEXT,  KEY_NPAGE ),
 322         DLG_KEYS_DATA( DLGK_PAGE_PREV,  KEY_PPAGE ),
 323         END_KEYS_BINDING
 324     };
 325     static DLG_KEYS_BINDING binding2[] = {
 326         INPUTSTR_BINDINGS,
 327         HELPKEY_BINDINGS,
 328         ENTERKEY_BINDINGS,
 329         END_KEYS_BINDING
 330     };
 331     /* *INDENT-ON* */
 332
 333 #ifdef KEY_RESIZE
 334     int old_height = height;
 335     int old_width = width;
 336 #endif
 337     ALL_DATA all;
 338     int i, j, x, y, cur_x, cur_y;
 339     int key = 0, fkey;
 340     int button = dialog_state.visit_items ? -1 : dlg_default_button();
 341     int choice = dlg_default_listitem(items);
 342     int result = DLG_EXIT_UNKNOWN;
 343     int scrollamt = 0;
 344     int max_choice;
 345     int found;
 346     int use_width, name_width, text_width, list_width;
 347     WINDOW *dialog, *menu;
 348     char *prompt = dlg_strclone(cprompt);
 349     const char **buttons = dlg_ok_labels();
 350     bool is_inputmenu = ((rename_menutext != 0)
 351                          && (rename_menutext != dlg_dummy_menutext));
 352
 353     dialog_state.plain_buttons = TRUE;
 354
 355     all.items = items;
 356     all.item_no = item_no;
 357
 358     dlg_does_output();
 359     dlg_tab_correct_str(prompt);
 360
 361 #ifdef KEY_RESIZE
 362   retry:
 363 #endif
 364
 365     all.menu_height = menu_height;
 366     use_width = dlg_calc_list_width(item_no, items) + 10;
 367     use_width = MAX(26, use_width);
 368     if (all.menu_height == 0) {
 369         /* calculate height without items (4) */
 370         dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, use_width);
 371         dlg_calc_listh(&height, &all.menu_height, item_no);
 372     } else {
 373         dlg_auto_size(title, prompt,
 374                       &height, &width,
 375                       MIN_HIGH + all.menu_height, use_width);
 376     }
 377     dlg_button_layout(buttons, &width);
 378     dlg_print_size(height, width);
 379     dlg_ctl_size(height, width);
 380
 381     x = dlg_box_x_ordinate(width);
 382     y = dlg_box_y_ordinate(height);
 383
 384     dialog = dlg_new_window(height, width, y, x);
 385     all.dialog = dialog;
 386
 387     dlg_register_window(dialog, "menubox", binding);
 388     dlg_register_buttons(dialog, "menubox", buttons);
 389
 390     dlg_mouse_setbase(x, y);
 391
 392     dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
 393     dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
 394     dlg_draw_title(dialog, title);
 395
 396     (void) wattrset(dialog, dialog_attr);
 397     dlg_print_autowrap(dialog, prompt, height, width);
 398
 399     all.menu_width = width - 6;
 400     getyx(dialog, cur_y, cur_x);
 401     all.box_y = cur_y + 1;
 402     all.box_x = (width - all.menu_width) / 2 - 1;
 403
 404     /*
 405      * After displaying the prompt, we know how much space we really have.
 406      * Limit the list to avoid overwriting the ok-button.
 407      */
 408     if (all.menu_height + MIN_HIGH > height - cur_y)
 409         all.menu_height = height - MIN_HIGH - cur_y;
 410     if (all.menu_height <= 0)
 411         all.menu_height = 1;
 412
 413     /* Find out maximal number of displayable items at once. */
 414     max_choice = MIN(all.menu_height,
 415                      RowHeight(item_no));
 416     if (is_inputmenu)
 417         max_choice /= INPUT_ROWS;
 418
 419     /* create new window for the menu */
 420     menu = dlg_sub_window(dialog, all.menu_height, all.menu_width,
 421                           y + all.box_y + 1,
 422                           x + all.box_x + 1);
 423     all.menu = menu;
 424
 425     dlg_register_window(menu, "menu", binding2);
 426     dlg_register_buttons(menu, "menu", buttons);
 427
 428     /* draw a box around the menu items */
 429     dlg_draw_box(dialog,
 430                  all.box_y, all.box_x,
 431                  all.menu_height + 2, all.menu_width + 2,
 432                  menubox_border_attr, menubox_border2_attr);
 433
 434     name_width = 0;
 435     text_width = 0;
 436
 437     /* Find length of longest item to center menu  *
 438      * only if --menu was given, using --inputmenu *
 439      * won't be centered.                         */
 440     for (i = 0; i < item_no; i++) {
 441         name_width = MAX(name_width, dlg_count_columns(items[i].name));
 442         text_width = MAX(text_width, dlg_count_columns(items[i].text));
 443     }
 444
 445     /* If the name+text is wider than the list is allowed, then truncate
 446      * one or both of them.  If the name is no wider than 30% of the list,
 447      * leave it intact.
 448      *
 449      * FIXME: the gutter width and name/list ratio should be configurable.
 450      */
 451     use_width = (all.menu_width - GUTTER);
 452     if (dialog_vars.no_tags) {
 453         list_width = MIN(use_width, text_width);
 454     } else if (dialog_vars.no_items) {
 455         list_width = MIN(use_width, name_width);
 456     } else {
 457         if (text_width >= 0
 458             && name_width >= 0
 459             && use_width > 0
 460             && text_width + name_width > use_width) {
 461             int need = (int) (0.30 * use_width);
 462             if (name_width > need) {
 463                 int want = (int) (use_width
 464                                   * ((double) name_width)
 465                                   / (text_width + name_width));
 466                 name_width = (want > need) ? want : need;
 467             }
 468             text_width = use_width - name_width;
 469         }
 470         list_width = (text_width + name_width);
 471     }
 472
 473     all.tag_x = (is_inputmenu
 474                  ? 0
 475                  : (use_width - list_width) / 2);
 476     all.item_x = ((dialog_vars.no_tags
 477                    ? 0
 478                    : (dialog_vars.no_items
 479                       ? 0
 480                       : (GUTTER + name_width)))
 481                   + all.tag_x);
 482
 483     if (choice - scrollamt >= max_choice) {
 484         scrollamt = choice - (max_choice - 1);
 485         choice = max_choice - 1;
 486     }
 487
 488     print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
 489
 490     /* register the new window, along with its borders */
 491     dlg_mouse_mkbigregion(all.box_y + 1, all.box_x,
 492                           all.menu_height + 2, all.menu_width + 2,
 493                           KEY_MAX, 1, 1, 1 /* by lines */ );
 494
 495     dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
 496
 497     dlg_trace_win(dialog);
 498     while (result == DLG_EXIT_UNKNOWN) {
 499         if (button < 0)         /* --visit-items */
 500             wmove(dialog,
 501                   all.box_y + ItemToRow(choice) + 1,
 502                   all.box_x + all.tag_x + 1);
 503
 504         key = dlg_mouse_wgetch(dialog, &fkey);
 505         if (dlg_result_key(key, fkey, &result))
 506             break;
 507
 508         found = FALSE;
 509         if (fkey) {
 510             /*
 511              * Allow a mouse-click on a box to switch selection to that box.
 512              * Handling a button click is a little more complicated, since we
 513              * push a KEY_ENTER back onto the input stream so we'll put the
 514              * cursor at the right place before handling the "keypress".
 515              */
 516             if (key >= DLGK_MOUSE(KEY_MAX)) {
 517                 key -= DLGK_MOUSE(KEY_MAX);
 518                 i = RowToItem(key);
 519                 if (i < max_choice) {
 520                     found = TRUE;
 521                 } else {
 522                     beep();
 523                     continue;
 524                 }
 525             } else if (is_DLGK_MOUSE(key)
 526                        && dlg_ok_buttoncode(key - M_EVENT) >= 0) {
 527                 button = (key - M_EVENT);
 528                 ungetch('\n');
 529                 continue;
 530             }
 531         } else {
 532             /*
 533              * Check if key pressed matches first character of any item tag in
 534              * list.  If there is more than one match, we will cycle through
 535              * each one as the same key is pressed repeatedly.
 536              */
 537             if (button < 0 || !dialog_state.visit_items) {
 538                 for (j = scrollamt + choice + 1; j < item_no; j++) {
 539                     if (check_hotkey(items, j)) {
 540                         found = TRUE;
 541                         i = j - scrollamt;
 542                         break;
 543                     }
 544                 }
 545                 if (!found) {
 546                     for (j = 0; j <= scrollamt + choice; j++) {
 547                         if (check_hotkey(items, j)) {
 548                             found = TRUE;
 549                             i = j - scrollamt;
 550                             break;
 551                         }
 552                     }
 553                 }
 554                 if (found)
 555                     dlg_flush_getc();
 556             } else if ((j = dlg_char_to_button(key, buttons)) >= 0) {
 557                 button = j;
 558                 ungetch('\n');
 559                 continue;
 560             }
 561
 562             /*
 563              * A single digit (1-9) positions the selection to that line in the
 564              * current screen.
 565              */
 566             if (!found
 567                 && (key <= '9')
 568                 && (key > '0')
 569                 && (key - '1' < max_choice)) {
 570                 found = TRUE;
 571                 i = key - '1';
 572             }
 573         }
 574
 575         if (!found && fkey) {
 576             found = TRUE;
 577             switch (key) {
 578             case DLGK_PAGE_FIRST:
 579                 i = -scrollamt;
 580                 break;
 581             case DLGK_PAGE_LAST:
 582                 i = item_no - 1 - scrollamt;
 583                 break;
 584             case DLGK_MOUSE(KEY_PPAGE):
 585             case DLGK_PAGE_PREV:
 586                 if (choice)
 587                     i = 0;
 588                 else if (scrollamt != 0)
 589                     i = -MIN(scrollamt, max_choice);
 590                 else
 591                     continue;
 592                 break;
 593             case DLGK_MOUSE(KEY_NPAGE):
 594             case DLGK_PAGE_NEXT:
 595                 i = MIN(choice + max_choice, item_no - scrollamt - 1);
 596                 break;
 597             case DLGK_ITEM_PREV:
 598                 i = choice - 1;
 599                 if (choice == 0 && scrollamt == 0)
 600                     continue;
 601                 break;
 602             case DLGK_ITEM_NEXT:
 603                 i = choice + 1;
 604                 if (scrollamt + choice >= item_no - 1)
 605                     continue;
 606                 break;
 607             default:
 608                 found = FALSE;
 609                 break;
 610             }
 611         }
 612
 613         if (found) {
 614             if (i != choice) {
 615                 getyx(dialog, cur_y, cur_x);
 616                 if (i < 0 || i >= max_choice) {
 617                     if (i < 0) {
 618                         scrollamt += i;
 619                         choice = 0;
 620                     } else {
 621                         choice = max_choice - 1;
 622                         scrollamt += (i - max_choice + 1);
 623                     }
 624                     print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
 625                 } else {
 626                     choice = i;
 627                     print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
 628                     (void) wmove(dialog, cur_y, cur_x);
 629                     wrefresh(dialog);
 630                 }
 631             }
 632             continue;           /* wait for another key press */
 633         }
 634
 635         if (fkey) {
 636             switch (key) {
 637             case DLGK_FIELD_PREV:
 638                 button = dlg_prev_button(buttons, button);
 639                 dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
 640                                  FALSE, width);
 641                 break;
 642             case DLGK_FIELD_NEXT:
 643                 button = dlg_next_button(buttons, button);
 644                 dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
 645                                  FALSE, width);
 646                 break;
 647             case DLGK_ENTER:
 648                 if (is_inputmenu)
 649                     result = dlg_ok_buttoncode(button);
 650                 else
 651                     result = dlg_enter_buttoncode(button);
 652
 653                 /*
 654                  * If dlg_menu() is called from dialog_menu(), we want to
 655                  * capture the results into dialog_vars.input_result.
 656                  */
 657                 if (result == DLG_EXIT_ERROR) {
 658                     result = DLG_EXIT_UNKNOWN;
 659                 } else if (is_inputmenu
 660                            || rename_menutext == dlg_dummy_menutext) {
 661                     result = handle_button(result,
 662                                            items,
 663                                            scrollamt + choice);
 664                 }
 665
 666                 /*
 667                  * If we have a rename_menutext function, interpret the Extra
 668                  * button as a request to rename the menu's text.  If that
 669                  * function doesn't return "Unknown", we will exit from this
 670                  * function.  Usually that is done for dialog_menu(), so the
 671                  * shell script can use the updated value.  If it does return
 672                  * "Unknown", update the list item only.  A direct caller of
 673                  * dlg_menu() can free the renamed value - we cannot.
 674                  */
 675                 if (is_inputmenu && result == DLG_EXIT_EXTRA) {
 676                     char *tmp;
 677
 678                     if (input_menu_edit(&all,
 679                                         &items[scrollamt + choice],
 680                                         choice,
 681                                         &tmp)) {
 682                         result = rename_menutext(items, scrollamt + choice, tmp);
 683                         if (result == DLG_EXIT_UNKNOWN) {
 684                             items[scrollamt + choice].text = tmp;
 685                         } else {
 686                             free(tmp);
 687                         }
 688                     } else {
 689                         result = DLG_EXIT_UNKNOWN;
 690                         print_item(&all,
 691                                    menu,
 692                                    &items[scrollamt + choice],
 693                                    choice,
 694                                    Selected,
 695                                    is_inputmenu);
 696                         (void) wnoutrefresh(menu);
 697                         free(tmp);
 698                     }
 699
 700                     if (result == DLG_EXIT_UNKNOWN) {
 701                         dlg_draw_buttons(dialog, height - 2, 0,
 702                                          buttons, button, FALSE, width);
 703                     }
 704                 }
 705                 break;
 706 #ifdef KEY_RESIZE
 707             case KEY_RESIZE:
 708                 /* reset data */
 709                 height = old_height;
 710                 width = old_width;
 711                 /* repaint */
 712                 dlg_clear();
 713                 dlg_del_window(dialog);
 714                 refresh();
 715                 dlg_mouse_free_regions();
 716                 goto retry;
 717 #endif
 718             default:
 719                 flash();
 720                 break;
 721             }
 722         }
 723     }
 724
 725     dlg_mouse_free_regions();
 726     dlg_unregister_window(menu);
 727     dlg_del_window(dialog);
 728     free(prompt);
 729
 730     *current_item = scrollamt + choice;
 731     return result;
 732 }
 733
 734 /*
 735  * Display a menu for choosing among a number of options
 736  */
 737 int
 738 dialog_menu(const char *title,
 739             const char *cprompt,
 740             int height,
 741             int width,
 742             int menu_height,
 743             int item_no,
 744             char **items)
 745 {
 746     int result;
 747     int choice;
 748     int i, j;
 749     DIALOG_LISTITEM *listitems;
 750
 751     listitems = dlg_calloc(DIALOG_LISTITEM, (size_t) item_no + 1);
 752     assert_ptr(listitems, "dialog_menu");
 753
 754     for (i = j = 0; i < item_no; ++i) {
 755         listitems[i].name = items[j++];
 756         listitems[i].text = (dialog_vars.no_items
 757                              ? dlg_strempty()
 758                              : items[j++]);
 759         listitems[i].help = ((dialog_vars.item_help)
 760                              ? items[j++]
 761                              : dlg_strempty());
 762     }
 763     dlg_align_columns(&listitems[0].text, sizeof(DIALOG_LISTITEM), item_no);
 764
 765     result = dlg_menu(title,
 766                       cprompt,
 767                       height,
 768                       width,
 769                       menu_height,
 770                       item_no,
 771                       listitems,
 772                       &choice,
 773                       (dialog_vars.input_menu
 774                        ? dlg_renamed_menutext
 775                        : dlg_dummy_menutext));
 776
 777     dlg_free_columns(&listitems[0].text, sizeof(DIALOG_LISTITEM), item_no);
 778     free(listitems);
 779     return result;
 780 }