contrib/dialog/menubox.c

   1 /*
   2  *  $Id: menubox.c,v 1.145 2012/12/30 21:11:02 tom Exp $
   3  *
   4  *  menubox.c -- implements the menu 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 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     switch (code) {
 195     case DLG_EXIT_OK:           /* FALLTHRU */
 196     case DLG_EXIT_EXTRA:
 197         dlg_add_string(items[choice].name);
 198         break;
 199     case DLG_EXIT_HELP:
 200         dlg_add_result("HELP ");
 201         if (USE_ITEM_HELP(items[choice].help)) {
 202             dlg_add_string(items[choice].help);
 203             code = DLG_EXIT_ITEM_HELP;
 204         } else {
 205             dlg_add_string(items[choice].name);
 206         }
 207         break;
 208     }
 209     return code;
 210 }
 211
 212 int
 213 dlg_renamed_menutext(DIALOG_LISTITEM * items, int current, char *newtext)
 214 {
 215     if (dialog_vars.input_result)
 216         dialog_vars.input_result[0] = '\0';
 217     dlg_add_result("RENAMED ");
 218     dlg_add_string(items[current].name);
 219     dlg_add_result(" ");
 220     dlg_add_string(newtext);
 221     return DLG_EXIT_EXTRA;
 222 }
 223
 224 int
 225 dlg_dummy_menutext(DIALOG_LISTITEM * items, int current, char *newtext)
 226 {
 227     (void) items;
 228     (void) current;
 229     (void) newtext;
 230     return DLG_EXIT_ERROR;
 231 }
 232
 233 static void
 234 print_menu(ALL_DATA * data, int choice, int scrollamt, int max_choice, bool is_inputmenu)
 235 {
 236     int i;
 237
 238     for (i = 0; i < max_choice; i++) {
 239         print_item(data,
 240                    data->menu,
 241                    &data->items[i + scrollamt],
 242                    i,
 243                    (i == choice) ? Selected : Unselected,
 244                    is_inputmenu);
 245     }
 246
 247     /* Clean bottom lines */
 248     if (is_inputmenu) {
 249         int spare_lines, x_count;
 250         spare_lines = data->menu_height % INPUT_ROWS;
 251         (void) wattrset(data->menu, menubox_attr);
 252         for (; spare_lines; spare_lines--) {
 253             wmove(data->menu, data->menu_height - spare_lines, 0);
 254             for (x_count = 0; x_count < data->menu_width;
 255                  x_count++) {
 256                 waddch(data->menu, ' ');
 257             }
 258         }
 259     }
 260
 261     (void) wnoutrefresh(data->menu);
 262
 263     dlg_draw_scrollbar(data->dialog,
 264                        scrollamt,
 265                        scrollamt,
 266                        scrollamt + max_choice,
 267                        data->item_no,
 268                        data->box_x,
 269                        data->box_x + data->menu_width,
 270                        data->box_y,
 271                        data->box_y + data->menu_height + 1,
 272                        menubox_border2_attr,
 273                        menubox_border_attr);
 274 }
 275
 276 static bool
 277 check_hotkey(DIALOG_LISTITEM * items, int choice)
 278 {
 279     bool result = FALSE;
 280
 281     if (dlg_match_char(dlg_last_getc(),
 282                        (dialog_vars.no_tags
 283                         ? items[choice].text
 284                         : items[choice].name))) {
 285         result = TRUE;
 286     }
 287     return result;
 288 }
 289
 290 /*
 291  * This is an alternate interface to 'menu' which allows the application
 292  * to read the list item states back directly without putting them in the
 293  * output buffer.
 294  */
 295 int
 296 dlg_menu(const char *title,
 297          const char *cprompt,
 298          int height,
 299          int width,
 300          int menu_height,
 301          int item_no,
 302          DIALOG_LISTITEM * items,
 303          int *current_item,
 304          DIALOG_INPUTMENU rename_menutext)
 305 {
 306     /* *INDENT-OFF* */
 307     static DLG_KEYS_BINDING binding[] = {
 308         HELPKEY_BINDINGS,
 309         ENTERKEY_BINDINGS,
 310         DLG_KEYS_DATA( DLGK_FIELD_NEXT, ' ' ),
 311         DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
 312         DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
 313         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
 314         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
 315         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  '+' ),
 316         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  KEY_DOWN ),
 317         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  CHR_NEXT ),
 318         DLG_KEYS_DATA( DLGK_ITEM_PREV,  '-' ),
 319         DLG_KEYS_DATA( DLGK_ITEM_PREV,  KEY_UP ),
 320         DLG_KEYS_DATA( DLGK_ITEM_PREV,  CHR_PREVIOUS ),
 321         DLG_KEYS_DATA( DLGK_PAGE_FIRST, KEY_HOME ),
 322         DLG_KEYS_DATA( DLGK_PAGE_LAST,  KEY_END ),
 323         DLG_KEYS_DATA( DLGK_PAGE_LAST,  KEY_LL ),
 324         DLG_KEYS_DATA( DLGK_PAGE_NEXT,  KEY_NPAGE ),
 325         DLG_KEYS_DATA( DLGK_PAGE_PREV,  KEY_PPAGE ),
 326         END_KEYS_BINDING
 327     };
 328     static DLG_KEYS_BINDING binding2[] = {
 329         INPUTSTR_BINDINGS,
 330         HELPKEY_BINDINGS,
 331         ENTERKEY_BINDINGS,
 332         END_KEYS_BINDING
 333     };
 334     /* *INDENT-ON* */
 335
 336 #ifdef KEY_RESIZE
 337     int old_height = height;
 338     int old_width = width;
 339 #endif
 340     ALL_DATA all;
 341     int i, j, x, y, cur_x, cur_y;
 342     int key = 0, fkey;
 343     int button = dialog_state.visit_items ? -1 : dlg_default_button();
 344     int choice = dlg_default_listitem(items);
 345     int result = DLG_EXIT_UNKNOWN;
 346     int scrollamt = 0;
 347     int max_choice;
 348     int found;
 349     int use_width, name_width, text_width, list_width;
 350     WINDOW *dialog, *menu;
 351     char *prompt = dlg_strclone(cprompt);
 352     const char **buttons = dlg_ok_labels();
 353     bool is_inputmenu = ((rename_menutext != 0)
 354                          && (rename_menutext != dlg_dummy_menutext));
 355
 356     all.items = items;
 357     all.item_no = item_no;
 358
 359     dlg_does_output();
 360     dlg_tab_correct_str(prompt);
 361
 362 #ifdef KEY_RESIZE
 363   retry:
 364 #endif
 365
 366     all.menu_height = menu_height;
 367     use_width = dlg_calc_list_width(item_no, items) + 10;
 368     use_width = MAX(26, use_width);
 369     if (all.menu_height == 0) {
 370         /* calculate height without items (4) */
 371         dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, use_width);
 372         dlg_calc_listh(&height, &all.menu_height, item_no);
 373     } else {
 374         dlg_auto_size(title, prompt,
 375                       &height, &width,
 376                       MIN_HIGH + all.menu_height, use_width);
 377     }
 378     dlg_button_layout(buttons, &width);
 379     dlg_print_size(height, width);
 380     dlg_ctl_size(height, width);
 381
 382     x = dlg_box_x_ordinate(width);
 383     y = dlg_box_y_ordinate(height);
 384
 385     dialog = dlg_new_window(height, width, y, x);
 386     all.dialog = dialog;
 387
 388     dlg_register_window(dialog, "menubox", binding);
 389     dlg_register_buttons(dialog, "menubox", buttons);
 390
 391     dlg_mouse_setbase(x, y);
 392
 393     dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
 394     dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
 395     dlg_draw_title(dialog, title);
 396
 397     (void) wattrset(dialog, dialog_attr);
 398     dlg_print_autowrap(dialog, prompt, height, width);
 399
 400     all.menu_width = width - 6;
 401     getyx(dialog, cur_y, cur_x);
 402     all.box_y = cur_y + 1;
 403     all.box_x = (width - all.menu_width) / 2 - 1;
 404
 405     /*
 406      * After displaying the prompt, we know how much space we really have.
 407      * Limit the list to avoid overwriting the ok-button.
 408      */
 409     if (all.menu_height + MIN_HIGH > height - cur_y)
 410         all.menu_height = height - MIN_HIGH - cur_y;
 411     if (all.menu_height <= 0)
 412         all.menu_height = 1;
 413
 414     /* Find out maximal number of displayable items at once. */
 415     max_choice = MIN(all.menu_height,
 416                      RowHeight(item_no));
 417     if (is_inputmenu)
 418         max_choice /= INPUT_ROWS;
 419
 420     /* create new window for the menu */
 421     menu = dlg_sub_window(dialog, all.menu_height, all.menu_width,
 422                           y + all.box_y + 1,
 423                           x + all.box_x + 1);
 424     all.menu = menu;
 425
 426     dlg_register_window(menu, "menu", binding2);
 427     dlg_register_buttons(menu, "menu", buttons);
 428
 429     /* draw a box around the menu items */
 430     dlg_draw_box(dialog,
 431                  all.box_y, all.box_x,
 432                  all.menu_height + 2, all.menu_width + 2,
 433                  menubox_border_attr, menubox_border2_attr);
 434
 435     name_width = 0;
 436     text_width = 0;
 437
 438     /* Find length of longest item to center menu  *
 439      * only if --menu was given, using --inputmenu *
 440      * won't be centered.                         */
 441     for (i = 0; i < item_no; i++) {
 442         name_width = MAX(name_width, dlg_count_columns(items[i].name));
 443         text_width = MAX(text_width, dlg_count_columns(items[i].text));
 444     }
 445
 446     /* If the name+text is wider than the list is allowed, then truncate
 447      * one or both of them.  If the name is no wider than 30% of the list,
 448      * leave it intact.
 449      *
 450      * FIXME: the gutter width and name/list ratio should be configurable.
 451      */
 452     use_width = (all.menu_width - GUTTER);
 453     if (dialog_vars.no_tags) {
 454         list_width = MIN(use_width, text_width);
 455     } else if (dialog_vars.no_items) {
 456         list_width = MIN(use_width, name_width);
 457     } else {
 458         if (text_width >= 0
 459             && name_width >= 0
 460             && use_width > 0
 461             && text_width + name_width > use_width) {
 462             int need = (int) (0.30 * use_width);
 463             if (name_width > need) {
 464                 int want = (int) (use_width
 465                                   * ((double) name_width)
 466                                   / (text_width + name_width));
 467                 name_width = (want > need) ? want : need;
 468             }
 469             text_width = use_width - name_width;
 470         }
 471         list_width = (text_width + name_width);
 472     }
 473
 474     all.tag_x = (is_inputmenu
 475                  ? 0
 476                  : (use_width - list_width) / 2);
 477     all.item_x = ((dialog_vars.no_tags
 478                    ? 0
 479                    : (dialog_vars.no_items
 480                       ? 0
 481                       : (GUTTER + name_width)))
 482                   + all.tag_x);
 483
 484     if (choice - scrollamt >= max_choice) {
 485         scrollamt = choice - (max_choice - 1);
 486         choice = max_choice - 1;
 487     }
 488
 489     print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
 490
 491     /* register the new window, along with its borders */
 492     dlg_mouse_mkbigregion(all.box_y + 1, all.box_x,
 493                           all.menu_height + 2, all.menu_width + 2,
 494                           KEY_MAX, 1, 1, 1 /* by lines */ );
 495
 496     dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
 497
 498     dlg_trace_win(dialog);
 499     while (result == DLG_EXIT_UNKNOWN) {
 500         if (button < 0)         /* --visit-items */
 501             wmove(dialog,
 502                   all.box_y + ItemToRow(choice) + 1,
 503                   all.box_x + all.tag_x + 1);
 504
 505         key = dlg_mouse_wgetch(dialog, &fkey);
 506         if (dlg_result_key(key, fkey, &result))
 507             break;
 508
 509         found = FALSE;
 510         if (fkey) {
 511             /*
 512              * Allow a mouse-click on a box to switch selection to that box.
 513              * Handling a button click is a little more complicated, since we
 514              * push a KEY_ENTER back onto the input stream so we'll put the
 515              * cursor at the right place before handling the "keypress".
 516              */
 517             if (key >= DLGK_MOUSE(KEY_MAX)) {
 518                 key -= DLGK_MOUSE(KEY_MAX);
 519                 i = RowToItem(key);
 520                 if (i < max_choice) {
 521                     found = TRUE;
 522                 } else {
 523                     beep();
 524                     continue;
 525                 }
 526             } else if (is_DLGK_MOUSE(key)
 527                        && dlg_ok_buttoncode(key - M_EVENT) >= 0) {
 528                 button = (key - M_EVENT);
 529                 ungetch('\n');
 530                 continue;
 531             }
 532         } else {
 533             /*
 534              * Check if key pressed matches first character of any item tag in
 535              * list.  If there is more than one match, we will cycle through
 536              * each one as the same key is pressed repeatedly.
 537              */
 538             if (button < 0 || !dialog_state.visit_items) {
 539                 for (j = scrollamt + choice + 1; j < item_no; j++) {
 540                     if (check_hotkey(items, j)) {
 541                         found = TRUE;
 542                         i = j - scrollamt;
 543                         break;
 544                     }
 545                 }
 546                 if (!found) {
 547                     for (j = 0; j <= scrollamt + choice; j++) {
 548                         if (check_hotkey(items, j)) {
 549                             found = TRUE;
 550                             i = j - scrollamt;
 551                             break;
 552                         }
 553                     }
 554                 }
 555                 if (found)
 556                     dlg_flush_getc();
 557             } else if ((j = dlg_char_to_button(key, buttons)) >= 0) {
 558                 button = j;
 559                 ungetch('\n');
 560                 continue;
 561             }
 562
 563             /*
 564              * A single digit (1-9) positions the selection to that line in the
 565              * current screen.
 566              */
 567             if (!found
 568                 && (key <= '9')
 569                 && (key > '0')
 570                 && (key - '1' < max_choice)) {
 571                 found = TRUE;
 572                 i = key - '1';
 573             }
 574         }
 575
 576         if (!found && fkey) {
 577             found = TRUE;
 578             switch (key) {
 579             case DLGK_PAGE_FIRST:
 580                 i = -scrollamt;
 581                 break;
 582             case DLGK_PAGE_LAST:
 583                 i = item_no - 1 - scrollamt;
 584                 break;
 585             case DLGK_MOUSE(KEY_PPAGE):
 586             case DLGK_PAGE_PREV:
 587                 if (choice)
 588                     i = 0;
 589                 else if (scrollamt != 0)
 590                     i = -MIN(scrollamt, max_choice);
 591                 else
 592                     continue;
 593                 break;
 594             case DLGK_MOUSE(KEY_NPAGE):
 595             case DLGK_PAGE_NEXT:
 596                 i = MIN(choice + max_choice, item_no - scrollamt - 1);
 597                 break;
 598             case DLGK_ITEM_PREV:
 599                 i = choice - 1;
 600                 if (choice == 0 && scrollamt == 0)
 601                     continue;
 602                 break;
 603             case DLGK_ITEM_NEXT:
 604                 i = choice + 1;
 605                 if (scrollamt + choice >= item_no - 1)
 606                     continue;
 607                 break;
 608             default:
 609                 found = FALSE;
 610                 break;
 611             }
 612         }
 613
 614         if (found) {
 615             if (i != choice) {
 616                 getyx(dialog, cur_y, cur_x);
 617                 if (i < 0 || i >= max_choice) {
 618                     if (i < 0) {
 619                         scrollamt += i;
 620                         choice = 0;
 621                     } else {
 622                         choice = max_choice - 1;
 623                         scrollamt += (i - max_choice + 1);
 624                     }
 625                     print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
 626                 } else {
 627                     choice = i;
 628                     print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
 629                     (void) wmove(dialog, cur_y, cur_x);
 630                     wrefresh(dialog);
 631                 }
 632             }
 633             continue;           /* wait for another key press */
 634         }
 635
 636         if (fkey) {
 637             switch (key) {
 638             case DLGK_FIELD_PREV:
 639                 button = dlg_prev_button(buttons, button);
 640                 dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
 641                                  FALSE, width);
 642                 break;
 643             case DLGK_FIELD_NEXT:
 644                 button = dlg_next_button(buttons, button);
 645                 dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
 646                                  FALSE, width);
 647                 break;
 648             case DLGK_ENTER:
 649                 if (is_inputmenu)
 650                     result = dlg_ok_buttoncode(button);
 651                 else
 652                     result = dlg_enter_buttoncode(button);
 653
 654                 /*
 655                  * If dlg_menu() is called from dialog_menu(), we want to
 656                  * capture the results into dialog_vars.input_result.
 657                  */
 658                 if (result == DLG_EXIT_ERROR) {
 659                     result = DLG_EXIT_UNKNOWN;
 660                 } else if (is_inputmenu
 661                            || rename_menutext == dlg_dummy_menutext) {
 662                     result = handle_button(result,
 663                                            items,
 664                                            scrollamt + choice);
 665                 }
 666
 667                 /*
 668                  * If we have a rename_menutext function, interpret the Extra
 669                  * button as a request to rename the menu's text.  If that
 670                  * function doesn't return "Unknown", we will exit from this
 671                  * function.  Usually that is done for dialog_menu(), so the
 672                  * shell script can use the updated value.  If it does return
 673                  * "Unknown", update the list item only.  A direct caller of
 674                  * dlg_menu() can free the renamed value - we cannot.
 675                  */
 676                 if (is_inputmenu && result == DLG_EXIT_EXTRA) {
 677                     char *tmp;
 678
 679                     if (input_menu_edit(&all,
 680                                         &items[scrollamt + choice],
 681                                         choice,
 682                                         &tmp)) {
 683                         result = rename_menutext(items, scrollamt + choice, tmp);
 684                         if (result == DLG_EXIT_UNKNOWN) {
 685                             items[scrollamt + choice].text = tmp;
 686                         } else {
 687                             free(tmp);
 688                         }
 689                     } else {
 690                         result = DLG_EXIT_UNKNOWN;
 691                         print_item(&all,
 692                                    menu,
 693                                    &items[scrollamt + choice],
 694                                    choice,
 695                                    Selected,
 696                                    is_inputmenu);
 697                         (void) wnoutrefresh(menu);
 698                         free(tmp);
 699                     }
 700
 701                     if (result == DLG_EXIT_UNKNOWN) {
 702                         dlg_draw_buttons(dialog, height - 2, 0,
 703                                          buttons, button, FALSE, width);
 704                     }
 705                 }
 706                 break;
 707 #ifdef KEY_RESIZE
 708             case KEY_RESIZE:
 709                 /* reset data */
 710                 height = old_height;
 711                 width = old_width;
 712                 /* repaint */
 713                 dlg_clear();
 714                 dlg_del_window(dialog);
 715                 refresh();
 716                 dlg_mouse_free_regions();
 717                 goto retry;
 718 #endif
 719             default:
 720                 flash();
 721                 break;
 722             }
 723         }
 724     }
 725
 726     dlg_mouse_free_regions();
 727     dlg_unregister_window(menu);
 728     dlg_del_window(dialog);
 729     free(prompt);
 730
 731     *current_item = scrollamt + choice;
 732     return result;
 733 }
 734
 735 /*
 736  * Display a menu for choosing among a number of options
 737  */
 738 int
 739 dialog_menu(const char *title,
 740             const char *cprompt,
 741             int height,
 742             int width,
 743             int menu_height,
 744             int item_no,
 745             char **items)
 746 {
 747     int result;
 748     int choice;
 749     int i, j;
 750     DIALOG_LISTITEM *listitems;
 751
 752     listitems = dlg_calloc(DIALOG_LISTITEM, (size_t) item_no + 1);
 753     assert_ptr(listitems, "dialog_menu");
 754
 755     for (i = j = 0; i < item_no; ++i) {
 756         listitems[i].name = items[j++];
 757         listitems[i].text = (dialog_vars.no_items
 758                              ? dlg_strempty()
 759                              : items[j++]);
 760         listitems[i].help = ((dialog_vars.item_help)
 761                              ? items[j++]
 762                              : dlg_strempty());
 763     }
 764     dlg_align_columns(&listitems[0].text, sizeof(DIALOG_LISTITEM), item_no);
 765
 766     result = dlg_menu(title,
 767                       cprompt,
 768                       height,
 769                       width,
 770                       menu_height,
 771                       item_no,
 772                       listitems,
 773                       &choice,
 774                       (dialog_vars.input_menu
 775                        ? dlg_renamed_menutext
 776                        : dlg_dummy_menutext));
 777
 778     dlg_free_columns(&listitems[0].text, sizeof(DIALOG_LISTITEM), item_no);
 779     free(listitems);
 780     return result;
 781 }