contrib/dialog/menubox.c

   1 /*
   2  *  $Id: menubox.c,v 1.175 2022/04/05 00:14:56 tom Exp $
   3  *
   4  *  menubox.c -- implements the menu box
   5  *
   6  *  Copyright 2000-2021,2022    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 <dlg_internals.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 climit = (data->item_x - data->tag_x - GUTTER);
  72     int my_width = data->menu_width;
  73     int my_x = data->item_x;
  74     int my_y = ItemToRow(choice);
  75     bool both = (!dialog_vars.no_tags && !dialog_vars.no_items);
  76     bool first = TRUE;
  77     chtype bordchar;
  78     const char *show = (dialog_vars.no_items
  79                         ? item->name
  80                         : item->text);
  81
  82     switch (selected) {
  83     default:
  84     case Unselected:
  85         bordchar = item_attr;
  86         break;
  87     case Selected:
  88         bordchar = item_selected_attr;
  89         break;
  90     case Editing:
  91         bordchar = dialog_attr;
  92         break;
  93     }
  94
  95     /* Clear 'residue' of last item and mark current current item */
  96     if (is_inputmenu) {
  97         int n;
  98
  99         dlg_attrset(win, (selected != Unselected) ? item_selected_attr : item_attr);
 100         for (n = my_y - 1; n < my_y + INPUT_ROWS - 1; n++) {
 101             wmove(win, n, 0);
 102             wprintw(win, "%*s", my_width, " ");
 103         }
 104     } else {
 105         dlg_attrset(win, menubox_attr);
 106         wmove(win, my_y, 0);
 107         wprintw(win, "%*s", my_width, " ");
 108     }
 109
 110     /* highlight first char of the tag to be special */
 111     if (both) {
 112         (void) wmove(win, my_y, data->tag_x);
 113         dlg_print_listitem(win, item->name, climit, first, selected);
 114         first = FALSE;
 115     }
 116
 117     /* Draw the input field box (only for inputmenu) */
 118     (void) wmove(win, my_y, my_x);
 119     if (is_inputmenu) {
 120         my_width -= 1;
 121         dlg_draw_box(win, my_y - 1, my_x, INPUT_ROWS, my_width - my_x - data->tag_x,
 122                      bordchar,
 123                      bordchar);
 124         my_width -= 1;
 125         ++my_x;
 126     }
 127
 128     /* print actual item */
 129     wmove(win, my_y, my_x);
 130     dlg_print_listitem(win, show, my_width - my_x, first, selected);
 131
 132     if (selected) {
 133         dlg_item_help(item->help);
 134     }
 135     dlg_attrset(win, save);
 136 }
 137
 138 /*
 139  * Allow the user to edit the text of a menu entry.
 140  */
 141 static int
 142 input_menu_edit(ALL_DATA * data,
 143                 DIALOG_LISTITEM * items,
 144                 int choice,
 145                 char **resultp)
 146 {
 147     chtype save = dlg_get_attrs(data->menu);
 148     char *result;
 149     int offset = 0;
 150     int key = 0, fkey = 0;
 151     bool first = TRUE;
 152     /* see above */
 153     bool is_inputmenu = TRUE;
 154     int y = ItemToRow(choice);
 155     int code = TRUE;
 156     int max_len = dlg_max_input(MAX((int) strlen(items->text) + 1, MAX_LEN));
 157
 158     result = dlg_malloc(char, (size_t) max_len);
 159     assert_ptr(result, "input_menu_edit");
 160
 161     /* original item is used to initialize the input string. */
 162     result[0] = '\0';
 163     strcpy(result, items->text);
 164
 165     print_item(data, data->menu, items, choice, Editing, TRUE);
 166
 167     /* taken out of inputbox.c - but somewhat modified */
 168     for (;;) {
 169         if (!first) {
 170             int check = DLG_EXIT_UNKNOWN;
 171             key = dlg_mouse_wgetch(data->menu, &fkey);
 172             if (dlg_result_key(key, fkey, &check)) {
 173                 if (check == DLG_EXIT_CANCEL) {
 174                     code = FALSE;
 175                     break;
 176                 } else {
 177                     flash();
 178                 }
 179             }
 180         }
 181         if (dlg_edit_string(result, &offset, key, fkey, first)) {
 182             dlg_show_string(data->menu, result, offset, inputbox_attr,
 183                             y,
 184                             data->item_x + 1,
 185                             data->menu_width - data->item_x - 3,
 186                             FALSE, first);
 187             first = FALSE;
 188         } else if (key == ESC || key == TAB) {
 189             code = FALSE;
 190             break;
 191         } else {
 192             break;
 193         }
 194     }
 195     print_item(data, data->menu, items, choice, Selected, TRUE);
 196     dlg_attrset(data->menu, save);
 197
 198     *resultp = result;
 199     return code;
 200 }
 201
 202 static int
 203 handle_button(int code, DIALOG_LISTITEM * items, int choice)
 204 {
 205     char *help_result;
 206
 207     switch (code) {
 208     case DLG_EXIT_OK:           /* FALLTHRU */
 209     case DLG_EXIT_EXTRA:
 210         dlg_add_string(items[choice].name);
 211         break;
 212     case DLG_EXIT_HELP:
 213         dlg_add_help_listitem(&code, &help_result, &items[choice]);
 214         dlg_add_string(help_result);
 215         break;
 216     }
 217     AddLastKey();
 218     return code;
 219 }
 220
 221 int
 222 dlg_renamed_menutext(DIALOG_LISTITEM * items, int current, char *newtext)
 223 {
 224     if (dialog_vars.input_result)
 225         dialog_vars.input_result[0] = '\0';
 226     dlg_add_result("RENAMED ");
 227     dlg_add_string(items[current].name);
 228     dlg_add_result(" ");
 229     dlg_add_string(newtext);
 230     AddLastKey();
 231     return DLG_EXIT_EXTRA;
 232 }
 233
 234 int
 235 dlg_dummy_menutext(DIALOG_LISTITEM * items, int current, char *newtext)
 236 {
 237     (void) items;
 238     (void) current;
 239     (void) newtext;
 240     return DLG_EXIT_ERROR;
 241 }
 242
 243 static void
 244 print_menu(ALL_DATA * data,
 245            int choice,
 246            int scrollamt,
 247            int max_choice,
 248            int max_items,
 249            bool is_inputmenu)
 250 {
 251     int i;
 252
 253     for (i = 0; i < max_choice; i++) {
 254         int ii = i + scrollamt;
 255         if (ii < max_items)
 256             print_item(data,
 257                        data->menu,
 258                        &data->items[ii],
 259                        i,
 260                        (i == choice) ? Selected : Unselected,
 261                        is_inputmenu);
 262     }
 263
 264     /* Clean bottom lines */
 265     if (is_inputmenu) {
 266         int spare_lines, x_count;
 267         spare_lines = data->menu_height % INPUT_ROWS;
 268         dlg_attrset(data->menu, menubox_attr);
 269         for (; spare_lines; spare_lines--) {
 270             wmove(data->menu, data->menu_height - spare_lines, 0);
 271             for (x_count = 0; x_count < data->menu_width;
 272                  x_count++) {
 273                 waddch(data->menu, ' ');
 274             }
 275         }
 276     }
 277
 278     (void) wnoutrefresh(data->menu);
 279
 280     dlg_draw_scrollbar(data->dialog,
 281                        scrollamt,
 282                        scrollamt,
 283                        scrollamt + max_choice,
 284                        data->item_no,
 285                        data->box_x,
 286                        data->box_x + data->menu_width,
 287                        data->box_y,
 288                        data->box_y + data->menu_height + 1,
 289                        menubox_border2_attr,
 290                        menubox_border_attr);
 291 }
 292
 293 static bool
 294 check_hotkey(DIALOG_LISTITEM * items, int choice)
 295 {
 296     bool result = FALSE;
 297
 298     if (dlg_match_char(dlg_last_getc(),
 299                        (dialog_vars.no_tags
 300                         ? items[choice].text
 301                         : items[choice].name))) {
 302         result = TRUE;
 303     }
 304     return result;
 305 }
 306
 307 /*
 308  * This is an alternate interface to 'menu' which allows the application
 309  * to read the list item states back directly without putting them in the
 310  * output buffer.
 311  */
 312 int
 313 dlg_menu(const char *title,
 314          const char *cprompt,
 315          int height,
 316          int width,
 317          int menu_height,
 318          int item_no,
 319          DIALOG_LISTITEM * items,
 320          int *current_item,
 321          DIALOG_INPUTMENU rename_menutext)
 322 {
 323     /* *INDENT-OFF* */
 324     static DLG_KEYS_BINDING binding[] = {
 325         HELPKEY_BINDINGS,
 326         ENTERKEY_BINDINGS,
 327         TOGGLEKEY_BINDINGS,
 328         DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
 329         DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
 330         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
 331         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
 332         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  '+' ),
 333         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  KEY_DOWN ),
 334         DLG_KEYS_DATA( DLGK_ITEM_NEXT,  CHR_NEXT ),
 335         DLG_KEYS_DATA( DLGK_ITEM_PREV,  '-' ),
 336         DLG_KEYS_DATA( DLGK_ITEM_PREV,  KEY_UP ),
 337         DLG_KEYS_DATA( DLGK_ITEM_PREV,  CHR_PREVIOUS ),
 338         DLG_KEYS_DATA( DLGK_PAGE_FIRST, KEY_HOME ),
 339         DLG_KEYS_DATA( DLGK_PAGE_LAST,  KEY_END ),
 340         DLG_KEYS_DATA( DLGK_PAGE_LAST,  KEY_LL ),
 341         DLG_KEYS_DATA( DLGK_PAGE_NEXT,  KEY_NPAGE ),
 342         DLG_KEYS_DATA( DLGK_PAGE_PREV,  KEY_PPAGE ),
 343         END_KEYS_BINDING
 344     };
 345     static DLG_KEYS_BINDING binding2[] = {
 346         INPUTSTR_BINDINGS,
 347         HELPKEY_BINDINGS,
 348         ENTERKEY_BINDINGS,
 349         END_KEYS_BINDING
 350     };
 351     /* *INDENT-ON* */
 352
 353 #ifdef KEY_RESIZE
 354     int old_LINES = LINES;
 355     int old_COLS = COLS;
 356     int old_height = height;
 357     int old_width = width;
 358 #endif
 359     ALL_DATA all;
 360     int i, j, x, y, cur_x, cur_y;
 361     int fkey;
 362     int button = dialog_state.visit_items ? -1 : dlg_default_button();
 363     int choice = dlg_default_listitem(items);
 364     int result = DLG_EXIT_UNKNOWN;
 365     int scrollamt = 0;
 366     int max_choice;
 367     int use_width, name_width, text_width, list_width;
 368     WINDOW *dialog, *menu;
 369     char *prompt = 0;
 370     const char **buttons = dlg_ok_labels();
 371     bool is_inputmenu = ((rename_menutext != 0)
 372                          && (rename_menutext != dlg_dummy_menutext));
 373
 374     DLG_TRACE(("# menubox args:\n"));
 375     DLG_TRACE2S("title", title);
 376     DLG_TRACE2S("message", cprompt);
 377     DLG_TRACE2N("height", height);
 378     DLG_TRACE2N("width", width);
 379     DLG_TRACE2N("lheight", menu_height);
 380     DLG_TRACE2N("llength", item_no);
 381     /* FIXME dump the items[][] too */
 382     DLG_TRACE2N("rename", rename_menutext != 0);
 383
 384     dialog_state.plain_buttons = TRUE;
 385
 386     all.items = items;
 387     all.item_no = item_no;
 388
 389     dlg_does_output();
 390
 391 #ifdef KEY_RESIZE
 392   retry:
 393 #endif
 394
 395     prompt = dlg_strclone(cprompt);
 396     dlg_tab_correct_str(prompt);
 397
 398     all.menu_height = menu_height;
 399     use_width = dlg_calc_list_width(item_no, items) + 10;
 400     use_width = MAX(26, use_width);
 401     if (all.menu_height == 0) {
 402         /* calculate height without items (4) */
 403         dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, use_width);
 404         dlg_calc_listh(&height, &all.menu_height, item_no);
 405     } else {
 406         dlg_auto_size(title, prompt,
 407                       &height, &width,
 408                       MIN_HIGH + all.menu_height, use_width);
 409     }
 410     dlg_button_layout(buttons, &width);
 411     dlg_print_size(height, width);
 412     dlg_ctl_size(height, width);
 413
 414     x = dlg_box_x_ordinate(width);
 415     y = dlg_box_y_ordinate(height);
 416
 417     dialog = dlg_new_window(height, width, y, x);
 418     all.dialog = dialog;
 419
 420     dlg_register_window(dialog, "menubox", binding);
 421     dlg_register_buttons(dialog, "menubox", buttons);
 422
 423     dlg_mouse_setbase(x, y);
 424
 425     dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
 426     dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
 427     dlg_draw_title(dialog, title);
 428
 429     dlg_attrset(dialog, dialog_attr);
 430     dlg_print_autowrap(dialog, prompt, height, width);
 431
 432     all.menu_width = width - 6;
 433     getyx(dialog, cur_y, cur_x);
 434     all.box_y = cur_y + 1;
 435     all.box_x = (width - all.menu_width) / 2 - 1;
 436
 437     /*
 438      * After displaying the prompt, we know how much space we really have.
 439      * Limit the list to avoid overwriting the ok-button.
 440      */
 441     all.menu_height = height - MIN_HIGH - cur_y;
 442     if (all.menu_height <= 0)
 443         all.menu_height = 1;
 444
 445     /* Find out maximal number of displayable items at once. */
 446     max_choice = MIN(all.menu_height,
 447                      RowHeight(item_no));
 448     if (is_inputmenu)
 449         max_choice /= INPUT_ROWS;
 450
 451     /* create new window for the menu */
 452     menu = dlg_sub_window(dialog, all.menu_height, all.menu_width,
 453                           y + all.box_y + 1,
 454                           x + all.box_x + 1);
 455     all.menu = menu;
 456
 457     dlg_register_window(menu, "menu", binding2);
 458     dlg_register_buttons(menu, "menu", buttons);
 459
 460     /* draw a box around the menu items */
 461     dlg_draw_box(dialog,
 462                  all.box_y, all.box_x,
 463                  all.menu_height + 2, all.menu_width + 2,
 464                  menubox_border_attr, menubox_border2_attr);
 465
 466     name_width = 0;
 467     text_width = 0;
 468
 469     /* Find length of longest item to center menu  *
 470      * only if --menu was given, using --inputmenu *
 471      * won't be centered.                         */
 472     for (i = 0; i < item_no; i++) {
 473         name_width = MAX(name_width, dlg_count_columns(items[i].name));
 474         text_width = MAX(text_width, dlg_count_columns(items[i].text));
 475     }
 476
 477     /* If the name+text is wider than the list is allowed, then truncate
 478      * one or both of them.  If the name is no wider than 30% of the list,
 479      * leave it intact.
 480      *
 481      * FIXME: the gutter width and name/list ratio should be configurable.
 482      */
 483     use_width = (all.menu_width - GUTTER);
 484     if (dialog_vars.no_tags) {
 485         list_width = MIN(use_width, text_width);
 486     } else if (dialog_vars.no_items) {
 487         list_width = MIN(use_width, name_width);
 488     } else {
 489         if (text_width >= 0
 490             && name_width >= 0
 491             && use_width > 0
 492             && text_width + name_width > use_width) {
 493             int need = (int) (0.30 * use_width);
 494             if (name_width > need) {
 495                 int want = (int) (use_width
 496                                   * ((double) name_width)
 497                                   / (text_width + name_width));
 498                 name_width = (want > need) ? want : need;
 499             }
 500             text_width = use_width - name_width;
 501         }
 502         list_width = (text_width + name_width);
 503     }
 504
 505     all.tag_x = (is_inputmenu
 506                  ? 0
 507                  : (use_width - list_width) / 2);
 508     all.item_x = ((dialog_vars.no_tags
 509                    ? 0
 510                    : (dialog_vars.no_items
 511                       ? 0
 512                       : (GUTTER + name_width)))
 513                   + all.tag_x);
 514
 515     if (choice - scrollamt >= max_choice) {
 516         scrollamt = choice - (max_choice - 1);
 517         choice = max_choice - 1;
 518     }
 519 #define PrintMenu() \
 520     print_menu(&all, choice, scrollamt, max_choice, item_no, is_inputmenu)
 521     PrintMenu();
 522
 523     /* register the new window, along with its borders */
 524     dlg_mouse_mkbigregion(all.box_y + 1, all.box_x,
 525                           all.menu_height + 2, all.menu_width + 2,
 526                           KEY_MAX, 1, 1, 1 /* by lines */ );
 527
 528     dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
 529
 530     dlg_trace_win(dialog);
 531
 532     while (result == DLG_EXIT_UNKNOWN) {
 533         int key, found;
 534
 535         if (button < 0)         /* --visit-items */
 536             wmove(dialog,
 537                   all.box_y + ItemToRow(choice) + 1,
 538                   all.box_x + all.tag_x + 1);
 539
 540         key = dlg_mouse_wgetch(dialog, &fkey);
 541         if (dlg_result_key(key, fkey, &result)) {
 542             if (!dlg_button_key(result, &button, &key, &fkey))
 543                 break;
 544         }
 545
 546         found = FALSE;
 547         if (fkey) {
 548             /*
 549              * Allow a mouse-click on a box to switch selection to that box.
 550              * Handling a button click is a little more complicated, since we
 551              * push a KEY_ENTER back onto the input stream so we'll put the
 552              * cursor at the right place before handling the "keypress".
 553              */
 554             if (key >= DLGK_MOUSE(KEY_MAX)) {
 555                 key -= DLGK_MOUSE(KEY_MAX);
 556                 i = RowToItem(key);
 557                 if (i < max_choice) {
 558                     found = TRUE;
 559                 } else {
 560                     beep();
 561                     continue;
 562                 }
 563             } else if (is_DLGK_MOUSE(key)
 564                        && dlg_ok_buttoncode(key - M_EVENT) >= 0) {
 565                 button = (key - M_EVENT);
 566                 ungetch('\n');
 567                 continue;
 568             }
 569         } else {
 570             /*
 571              * Check if key pressed matches first character of any item tag in
 572              * list.  If there is more than one match, we will cycle through
 573              * each one as the same key is pressed repeatedly.
 574              */
 575             if (button < 0 || !dialog_state.visit_items) {
 576                 for (j = scrollamt + choice + 1; j < item_no; j++) {
 577                     if (check_hotkey(items, j)) {
 578                         found = TRUE;
 579                         i = j - scrollamt;
 580                         break;
 581                     }
 582                 }
 583                 if (!found) {
 584                     for (j = 0; j <= scrollamt + choice; j++) {
 585                         if (check_hotkey(items, j)) {
 586                             found = TRUE;
 587                             i = j - scrollamt;
 588                             break;
 589                         }
 590                     }
 591                 }
 592                 if (found)
 593                     dlg_flush_getc();
 594             } else if ((j = dlg_char_to_button(key, buttons)) >= 0) {
 595                 button = j;
 596                 ungetch('\n');
 597                 continue;
 598             }
 599
 600             /*
 601              * A single digit (1-9) positions the selection to that line in the
 602              * current screen.
 603              */
 604             if (!found
 605                 && (key <= '9')
 606                 && (key > '0')
 607                 && (key - '1' < max_choice)) {
 608                 found = TRUE;
 609                 i = key - '1';
 610             }
 611         }
 612
 613         if (!found && fkey) {
 614             found = TRUE;
 615             switch (key) {
 616             case DLGK_PAGE_FIRST:
 617                 i = -scrollamt;
 618                 break;
 619             case DLGK_PAGE_LAST:
 620                 i = item_no - 1 - scrollamt;
 621                 break;
 622             case DLGK_MOUSE(KEY_PPAGE):
 623             case DLGK_PAGE_PREV:
 624                 if (choice)
 625                     i = 0;
 626                 else if (scrollamt != 0)
 627                     i = -MIN(scrollamt, max_choice);
 628                 else
 629                     continue;
 630                 break;
 631             case DLGK_MOUSE(KEY_NPAGE):
 632             case DLGK_PAGE_NEXT:
 633                 i = MIN(choice + max_choice, item_no - scrollamt - 1);
 634                 break;
 635             case DLGK_ITEM_PREV:
 636                 i = choice - 1;
 637                 if (choice == 0 && scrollamt == 0)
 638                     continue;
 639                 break;
 640             case DLGK_ITEM_NEXT:
 641                 i = choice + 1;
 642                 if (scrollamt + choice >= item_no - 1)
 643                     continue;
 644                 break;
 645             default:
 646                 found = FALSE;
 647                 break;
 648             }
 649         }
 650
 651         if (found) {
 652             if (i != choice) {
 653                 getyx(dialog, cur_y, cur_x);
 654                 if (i < 0 || i >= max_choice) {
 655                     if (i < 0) {
 656                         scrollamt += i;
 657                         choice = 0;
 658                     } else {
 659                         choice = max_choice - 1;
 660                         scrollamt += (i - max_choice + 1);
 661                     }
 662                     PrintMenu();
 663                 } else {
 664                     choice = i;
 665                     PrintMenu();
 666                     (void) wmove(dialog, cur_y, cur_x);
 667                     wrefresh(dialog);
 668                 }
 669             }
 670             continue;           /* wait for another key press */
 671         }
 672
 673         if (fkey) {
 674             switch (key) {
 675             case DLGK_FIELD_PREV:
 676                 button = dlg_prev_button(buttons, button);
 677                 dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
 678                                  FALSE, width);
 679                 break;
 680
 681             case DLGK_FIELD_NEXT:
 682                 button = dlg_next_button(buttons, button);
 683                 dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
 684                                  FALSE, width);
 685                 break;
 686
 687             case DLGK_TOGGLE:
 688             case DLGK_ENTER:
 689             case DLGK_LEAVE:
 690                 result = ((key == DLGK_LEAVE)
 691                           ? dlg_ok_buttoncode(button)
 692                           : dlg_enter_buttoncode(button));
 693
 694                 /*
 695                  * If dlg_menu() is called from dialog_menu(), we want to
 696                  * capture the results into dialog_vars.input_result.
 697                  */
 698                 if (result == DLG_EXIT_ERROR) {
 699                     result = DLG_EXIT_UNKNOWN;
 700                 } else if (is_inputmenu
 701                            || rename_menutext == dlg_dummy_menutext) {
 702                     result = handle_button(result,
 703                                            items,
 704                                            scrollamt + choice);
 705                 }
 706
 707                 /*
 708                  * If we have a rename_menutext function, interpret the Extra
 709                  * button as a request to rename the menu's text.  If that
 710                  * function doesn't return "Unknown", we will exit from this
 711                  * function.  Usually that is done for dialog_menu(), so the
 712                  * shell script can use the updated value.  If it does return
 713                  * "Unknown", update the list item only.  A direct caller of
 714                  * dlg_menu() can free the renamed value - we cannot.
 715                  */
 716                 if (is_inputmenu && result == DLG_EXIT_EXTRA) {
 717                     char *tmp;
 718
 719                     if (input_menu_edit(&all,
 720                                         &items[scrollamt + choice],
 721                                         choice,
 722                                         &tmp)) {
 723                         result = rename_menutext(items, scrollamt + choice, tmp);
 724                         if (result == DLG_EXIT_UNKNOWN) {
 725                             items[scrollamt + choice].text = tmp;
 726                         } else {
 727                             free(tmp);
 728                         }
 729                     } else {
 730                         result = DLG_EXIT_UNKNOWN;
 731                         print_item(&all,
 732                                    menu,
 733                                    &items[scrollamt + choice],
 734                                    choice,
 735                                    Selected,
 736                                    is_inputmenu);
 737                         (void) wnoutrefresh(menu);
 738                         free(tmp);
 739                     }
 740
 741                     if (result == DLG_EXIT_UNKNOWN) {
 742                         dlg_draw_buttons(dialog, height - 2, 0,
 743                                          buttons, button, FALSE, width);
 744                     }
 745                 }
 746                 break;
 747 #ifdef KEY_RESIZE
 748             case KEY_RESIZE:
 749                 dlg_will_resize(dialog);
 750                 /* reset data */
 751                 resizeit(height, LINES);
 752                 resizeit(width, COLS);
 753                 free(prompt);
 754                 _dlg_resize_cleanup(dialog);
 755                 dlg_unregister_window(menu);
 756                 dlg_unregister_window(dialog);
 757                 /* keep position */
 758                 choice += scrollamt;
 759                 scrollamt = 0;
 760                 /* repaint */
 761                 goto retry;
 762 #endif
 763             default:
 764                 flash();
 765                 break;
 766             }
 767         }
 768     }
 769
 770     dlg_mouse_free_regions();
 771     dlg_unregister_window(menu);
 772     dlg_del_window(dialog);
 773     free(prompt);
 774
 775     *current_item = scrollamt + choice;
 776
 777     DLG_TRACE2N("current", *current_item);
 778     return result;
 779 }
 780
 781 /*
 782  * Display a menu for choosing among a number of options
 783  */
 784 int
 785 dialog_menu(const char *title,
 786             const char *cprompt,
 787             int height,
 788             int width,
 789             int menu_height,
 790             int item_no,
 791             char **items)
 792 {
 793     int result;
 794     int choice;
 795     int i, j;
 796     DIALOG_LISTITEM *listitems;
 797
 798     listitems = dlg_calloc(DIALOG_LISTITEM, (size_t) item_no + 1);
 799     assert_ptr(listitems, "dialog_menu");
 800
 801     for (i = j = 0; i < item_no; ++i) {
 802         listitems[i].name = items[j++];
 803         listitems[i].text = (dialog_vars.no_items
 804                              ? dlg_strempty()
 805                              : items[j++]);
 806         listitems[i].help = ((dialog_vars.item_help)
 807                              ? items[j++]
 808                              : dlg_strempty());
 809     }
 810     dlg_align_columns(&listitems[0].text, sizeof(DIALOG_LISTITEM), item_no);
 811
 812     result = dlg_menu(title,
 813                       cprompt,
 814                       height,
 815                       width,
 816                       menu_height,
 817                       item_no,
 818                       listitems,
 819                       &choice,
 820                       (dialog_vars.input_menu
 821                        ? dlg_renamed_menutext
 822                        : dlg_dummy_menutext));
 823
 824     dlg_free_columns(&listitems[0].text, sizeof(DIALOG_LISTITEM), item_no);
 825     free(listitems);
 826     return result;
 827 }