1/*
2 *  $Id: menubox.c,v 1.171 2020/11/23 21:03:11 tom Exp $
3 *
4 *  menubox.c -- implements the menu box
5 *
6 *  Copyright 2000-2019,2020	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
30typedef enum {
31    Unselected = 0,
32    Selected,
33    Editing
34} Mode;
35
36typedef 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 */
62static void
63print_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 */
141static int
142input_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
202static int
203handle_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
221int
222dlg_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
234int
235dlg_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
243static void
244print_menu(ALL_DATA * data, int choice, int scrollamt, int max_choice, bool is_inputmenu)
245{
246    int i;
247
248    for (i = 0; i < max_choice; i++) {
249	print_item(data,
250		   data->menu,
251		   &data->items[i + scrollamt],
252		   i,
253		   (i == choice) ? Selected : Unselected,
254		   is_inputmenu);
255    }
256
257    /* Clean bottom lines */
258    if (is_inputmenu) {
259	int spare_lines, x_count;
260	spare_lines = data->menu_height % INPUT_ROWS;
261	dlg_attrset(data->menu, menubox_attr);
262	for (; spare_lines; spare_lines--) {
263	    wmove(data->menu, data->menu_height - spare_lines, 0);
264	    for (x_count = 0; x_count < data->menu_width;
265		 x_count++) {
266		waddch(data->menu, ' ');
267	    }
268	}
269    }
270
271    (void) wnoutrefresh(data->menu);
272
273    dlg_draw_scrollbar(data->dialog,
274		       scrollamt,
275		       scrollamt,
276		       scrollamt + max_choice,
277		       data->item_no,
278		       data->box_x,
279		       data->box_x + data->menu_width,
280		       data->box_y,
281		       data->box_y + data->menu_height + 1,
282		       menubox_border2_attr,
283		       menubox_border_attr);
284}
285
286static bool
287check_hotkey(DIALOG_LISTITEM * items, int choice)
288{
289    bool result = FALSE;
290
291    if (dlg_match_char(dlg_last_getc(),
292		       (dialog_vars.no_tags
293			? items[choice].text
294			: items[choice].name))) {
295	result = TRUE;
296    }
297    return result;
298}
299
300/*
301 * This is an alternate interface to 'menu' which allows the application
302 * to read the list item states back directly without putting them in the
303 * output buffer.
304 */
305int
306dlg_menu(const char *title,
307	 const char *cprompt,
308	 int height,
309	 int width,
310	 int menu_height,
311	 int item_no,
312	 DIALOG_LISTITEM * items,
313	 int *current_item,
314	 DIALOG_INPUTMENU rename_menutext)
315{
316    /* *INDENT-OFF* */
317    static DLG_KEYS_BINDING binding[] = {
318	HELPKEY_BINDINGS,
319	ENTERKEY_BINDINGS,
320	TOGGLEKEY_BINDINGS,
321	DLG_KEYS_DATA( DLGK_FIELD_NEXT,	KEY_RIGHT ),
322	DLG_KEYS_DATA( DLGK_FIELD_NEXT,	TAB ),
323	DLG_KEYS_DATA( DLGK_FIELD_PREV,	KEY_BTAB ),
324	DLG_KEYS_DATA( DLGK_FIELD_PREV,	KEY_LEFT ),
325	DLG_KEYS_DATA( DLGK_ITEM_NEXT,	'+' ),
326	DLG_KEYS_DATA( DLGK_ITEM_NEXT,	KEY_DOWN ),
327	DLG_KEYS_DATA( DLGK_ITEM_NEXT,  CHR_NEXT ),
328	DLG_KEYS_DATA( DLGK_ITEM_PREV,	'-' ),
329	DLG_KEYS_DATA( DLGK_ITEM_PREV,	KEY_UP ),
330	DLG_KEYS_DATA( DLGK_ITEM_PREV,  CHR_PREVIOUS ),
331	DLG_KEYS_DATA( DLGK_PAGE_FIRST,	KEY_HOME ),
332	DLG_KEYS_DATA( DLGK_PAGE_LAST,	KEY_END ),
333	DLG_KEYS_DATA( DLGK_PAGE_LAST,	KEY_LL ),
334	DLG_KEYS_DATA( DLGK_PAGE_NEXT,	KEY_NPAGE ),
335	DLG_KEYS_DATA( DLGK_PAGE_PREV,	KEY_PPAGE ),
336	END_KEYS_BINDING
337    };
338    static DLG_KEYS_BINDING binding2[] = {
339	INPUTSTR_BINDINGS,
340	HELPKEY_BINDINGS,
341	ENTERKEY_BINDINGS,
342	END_KEYS_BINDING
343    };
344    /* *INDENT-ON* */
345
346#ifdef KEY_RESIZE
347    int old_LINES = LINES;
348    int old_COLS = COLS;
349    int old_height = height;
350    int old_width = width;
351#endif
352    ALL_DATA all;
353    int i, j, x, y, cur_x, cur_y;
354    int fkey;
355    int button = dialog_state.visit_items ? -1 : dlg_default_button();
356    int choice = dlg_default_listitem(items);
357    int result = DLG_EXIT_UNKNOWN;
358    int scrollamt = 0;
359    int max_choice;
360    int use_width, name_width, text_width, list_width;
361    WINDOW *dialog, *menu;
362    char *prompt = 0;
363    const char **buttons = dlg_ok_labels();
364    bool is_inputmenu = ((rename_menutext != 0)
365			 && (rename_menutext != dlg_dummy_menutext));
366
367    DLG_TRACE(("# menubox args:\n"));
368    DLG_TRACE2S("title", title);
369    DLG_TRACE2S("message", cprompt);
370    DLG_TRACE2N("height", height);
371    DLG_TRACE2N("width", width);
372    DLG_TRACE2N("lheight", menu_height);
373    DLG_TRACE2N("llength", item_no);
374    /* FIXME dump the items[][] too */
375    DLG_TRACE2N("rename", rename_menutext != 0);
376
377    dialog_state.plain_buttons = TRUE;
378
379    all.items = items;
380    all.item_no = item_no;
381
382    dlg_does_output();
383
384#ifdef KEY_RESIZE
385  retry:
386#endif
387
388    prompt = dlg_strclone(cprompt);
389    dlg_tab_correct_str(prompt);
390
391    all.menu_height = menu_height;
392    use_width = dlg_calc_list_width(item_no, items) + 10;
393    use_width = MAX(26, use_width);
394    if (all.menu_height == 0) {
395	/* calculate height without items (4) */
396	dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, use_width);
397	dlg_calc_listh(&height, &all.menu_height, item_no);
398    } else {
399	dlg_auto_size(title, prompt,
400		      &height, &width,
401		      MIN_HIGH + all.menu_height, use_width);
402    }
403    dlg_button_layout(buttons, &width);
404    dlg_print_size(height, width);
405    dlg_ctl_size(height, width);
406
407    x = dlg_box_x_ordinate(width);
408    y = dlg_box_y_ordinate(height);
409
410    dialog = dlg_new_window(height, width, y, x);
411    all.dialog = dialog;
412
413    dlg_register_window(dialog, "menubox", binding);
414    dlg_register_buttons(dialog, "menubox", buttons);
415
416    dlg_mouse_setbase(x, y);
417
418    dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
419    dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
420    dlg_draw_title(dialog, title);
421
422    dlg_attrset(dialog, dialog_attr);
423    dlg_print_autowrap(dialog, prompt, height, width);
424
425    all.menu_width = width - 6;
426    getyx(dialog, cur_y, cur_x);
427    all.box_y = cur_y + 1;
428    all.box_x = (width - all.menu_width) / 2 - 1;
429
430    /*
431     * After displaying the prompt, we know how much space we really have.
432     * Limit the list to avoid overwriting the ok-button.
433     */
434    all.menu_height = height - MIN_HIGH - cur_y;
435    if (all.menu_height <= 0)
436	all.menu_height = 1;
437
438    /* Find out maximal number of displayable items at once. */
439    max_choice = MIN(all.menu_height,
440		     RowHeight(item_no));
441    if (is_inputmenu)
442	max_choice /= INPUT_ROWS;
443
444    /* create new window for the menu */
445    menu = dlg_sub_window(dialog, all.menu_height, all.menu_width,
446			  y + all.box_y + 1,
447			  x + all.box_x + 1);
448    all.menu = menu;
449
450    dlg_register_window(menu, "menu", binding2);
451    dlg_register_buttons(menu, "menu", buttons);
452
453    /* draw a box around the menu items */
454    dlg_draw_box(dialog,
455		 all.box_y, all.box_x,
456		 all.menu_height + 2, all.menu_width + 2,
457		 menubox_border_attr, menubox_border2_attr);
458
459    name_width = 0;
460    text_width = 0;
461
462    /* Find length of longest item to center menu  *
463     * only if --menu was given, using --inputmenu *
464     * won't be centered.                         */
465    for (i = 0; i < item_no; i++) {
466	name_width = MAX(name_width, dlg_count_columns(items[i].name));
467	text_width = MAX(text_width, dlg_count_columns(items[i].text));
468    }
469
470    /* If the name+text is wider than the list is allowed, then truncate
471     * one or both of them.  If the name is no wider than 30% of the list,
472     * leave it intact.
473     *
474     * FIXME: the gutter width and name/list ratio should be configurable.
475     */
476    use_width = (all.menu_width - GUTTER);
477    if (dialog_vars.no_tags) {
478	list_width = MIN(use_width, text_width);
479    } else if (dialog_vars.no_items) {
480	list_width = MIN(use_width, name_width);
481    } else {
482	if (text_width >= 0
483	    && name_width >= 0
484	    && use_width > 0
485	    && text_width + name_width > use_width) {
486	    int need = (int) (0.30 * use_width);
487	    if (name_width > need) {
488		int want = (int) (use_width
489				  * ((double) name_width)
490				  / (text_width + name_width));
491		name_width = (want > need) ? want : need;
492	    }
493	    text_width = use_width - name_width;
494	}
495	list_width = (text_width + name_width);
496    }
497
498    all.tag_x = (is_inputmenu
499		 ? 0
500		 : (use_width - list_width) / 2);
501    all.item_x = ((dialog_vars.no_tags
502		   ? 0
503		   : (dialog_vars.no_items
504		      ? 0
505		      : (GUTTER + name_width)))
506		  + all.tag_x);
507
508    if (choice - scrollamt >= max_choice) {
509	scrollamt = choice - (max_choice - 1);
510	choice = max_choice - 1;
511    }
512
513    print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
514
515    /* register the new window, along with its borders */
516    dlg_mouse_mkbigregion(all.box_y + 1, all.box_x,
517			  all.menu_height + 2, all.menu_width + 2,
518			  KEY_MAX, 1, 1, 1 /* by lines */ );
519
520    dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
521
522    dlg_trace_win(dialog);
523
524    while (result == DLG_EXIT_UNKNOWN) {
525	int key, found;
526
527	if (button < 0)		/* --visit-items */
528	    wmove(dialog,
529		  all.box_y + ItemToRow(choice) + 1,
530		  all.box_x + all.tag_x + 1);
531
532	key = dlg_mouse_wgetch(dialog, &fkey);
533	if (dlg_result_key(key, fkey, &result)) {
534	    if (!dlg_button_key(result, &button, &key, &fkey))
535		break;
536	}
537
538	found = FALSE;
539	if (fkey) {
540	    /*
541	     * Allow a mouse-click on a box to switch selection to that box.
542	     * Handling a button click is a little more complicated, since we
543	     * push a KEY_ENTER back onto the input stream so we'll put the
544	     * cursor at the right place before handling the "keypress".
545	     */
546	    if (key >= DLGK_MOUSE(KEY_MAX)) {
547		key -= DLGK_MOUSE(KEY_MAX);
548		i = RowToItem(key);
549		if (i < max_choice) {
550		    found = TRUE;
551		} else {
552		    beep();
553		    continue;
554		}
555	    } else if (is_DLGK_MOUSE(key)
556		       && dlg_ok_buttoncode(key - M_EVENT) >= 0) {
557		button = (key - M_EVENT);
558		ungetch('\n');
559		continue;
560	    }
561	} else {
562	    /*
563	     * Check if key pressed matches first character of any item tag in
564	     * list.  If there is more than one match, we will cycle through
565	     * each one as the same key is pressed repeatedly.
566	     */
567	    if (button < 0 || !dialog_state.visit_items) {
568		for (j = scrollamt + choice + 1; j < item_no; j++) {
569		    if (check_hotkey(items, j)) {
570			found = TRUE;
571			i = j - scrollamt;
572			break;
573		    }
574		}
575		if (!found) {
576		    for (j = 0; j <= scrollamt + choice; j++) {
577			if (check_hotkey(items, j)) {
578			    found = TRUE;
579			    i = j - scrollamt;
580			    break;
581			}
582		    }
583		}
584		if (found)
585		    dlg_flush_getc();
586	    } else if ((j = dlg_char_to_button(key, buttons)) >= 0) {
587		button = j;
588		ungetch('\n');
589		continue;
590	    }
591
592	    /*
593	     * A single digit (1-9) positions the selection to that line in the
594	     * current screen.
595	     */
596	    if (!found
597		&& (key <= '9')
598		&& (key > '0')
599		&& (key - '1' < max_choice)) {
600		found = TRUE;
601		i = key - '1';
602	    }
603	}
604
605	if (!found && fkey) {
606	    found = TRUE;
607	    switch (key) {
608	    case DLGK_PAGE_FIRST:
609		i = -scrollamt;
610		break;
611	    case DLGK_PAGE_LAST:
612		i = item_no - 1 - scrollamt;
613		break;
614	    case DLGK_MOUSE(KEY_PPAGE):
615	    case DLGK_PAGE_PREV:
616		if (choice)
617		    i = 0;
618		else if (scrollamt != 0)
619		    i = -MIN(scrollamt, max_choice);
620		else
621		    continue;
622		break;
623	    case DLGK_MOUSE(KEY_NPAGE):
624	    case DLGK_PAGE_NEXT:
625		i = MIN(choice + max_choice, item_no - scrollamt - 1);
626		break;
627	    case DLGK_ITEM_PREV:
628		i = choice - 1;
629		if (choice == 0 && scrollamt == 0)
630		    continue;
631		break;
632	    case DLGK_ITEM_NEXT:
633		i = choice + 1;
634		if (scrollamt + choice >= item_no - 1)
635		    continue;
636		break;
637	    default:
638		found = FALSE;
639		break;
640	    }
641	}
642
643	if (found) {
644	    if (i != choice) {
645		getyx(dialog, cur_y, cur_x);
646		if (i < 0 || i >= max_choice) {
647		    if (i < 0) {
648			scrollamt += i;
649			choice = 0;
650		    } else {
651			choice = max_choice - 1;
652			scrollamt += (i - max_choice + 1);
653		    }
654		    print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
655		} else {
656		    choice = i;
657		    print_menu(&all, choice, scrollamt, max_choice, is_inputmenu);
658		    (void) wmove(dialog, cur_y, cur_x);
659		    wrefresh(dialog);
660		}
661	    }
662	    continue;		/* wait for another key press */
663	}
664
665	if (fkey) {
666	    switch (key) {
667	    case DLGK_FIELD_PREV:
668		button = dlg_prev_button(buttons, button);
669		dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
670				 FALSE, width);
671		break;
672
673	    case DLGK_FIELD_NEXT:
674		button = dlg_next_button(buttons, button);
675		dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
676				 FALSE, width);
677		break;
678
679	    case DLGK_TOGGLE:
680	    case DLGK_ENTER:
681	    case DLGK_LEAVE:
682		result = ((key == DLGK_LEAVE)
683			  ? dlg_ok_buttoncode(button)
684			  : dlg_enter_buttoncode(button));
685
686		/*
687		 * If dlg_menu() is called from dialog_menu(), we want to
688		 * capture the results into dialog_vars.input_result.
689		 */
690		if (result == DLG_EXIT_ERROR) {
691		    result = DLG_EXIT_UNKNOWN;
692		} else if (is_inputmenu
693			   || rename_menutext == dlg_dummy_menutext) {
694		    result = handle_button(result,
695					   items,
696					   scrollamt + choice);
697		}
698
699		/*
700		 * If we have a rename_menutext function, interpret the Extra
701		 * button as a request to rename the menu's text.  If that
702		 * function doesn't return "Unknown", we will exit from this
703		 * function.  Usually that is done for dialog_menu(), so the
704		 * shell script can use the updated value.  If it does return
705		 * "Unknown", update the list item only.  A direct caller of
706		 * dlg_menu() can free the renamed value - we cannot.
707		 */
708		if (is_inputmenu && result == DLG_EXIT_EXTRA) {
709		    char *tmp;
710
711		    if (input_menu_edit(&all,
712					&items[scrollamt + choice],
713					choice,
714					&tmp)) {
715			result = rename_menutext(items, scrollamt + choice, tmp);
716			if (result == DLG_EXIT_UNKNOWN) {
717			    items[scrollamt + choice].text = tmp;
718			} else {
719			    free(tmp);
720			}
721		    } else {
722			result = DLG_EXIT_UNKNOWN;
723			print_item(&all,
724				   menu,
725				   &items[scrollamt + choice],
726				   choice,
727				   Selected,
728				   is_inputmenu);
729			(void) wnoutrefresh(menu);
730			free(tmp);
731		    }
732
733		    if (result == DLG_EXIT_UNKNOWN) {
734			dlg_draw_buttons(dialog, height - 2, 0,
735					 buttons, button, FALSE, width);
736		    }
737		}
738		break;
739#ifdef KEY_RESIZE
740	    case KEY_RESIZE:
741		dlg_will_resize(dialog);
742		/* reset data */
743		resizeit(height, LINES);
744		resizeit(width, COLS);
745		free(prompt);
746		_dlg_resize_cleanup(dialog);
747		/* repaint */
748		goto retry;
749#endif
750	    default:
751		flash();
752		break;
753	    }
754	}
755    }
756
757    dlg_mouse_free_regions();
758    dlg_unregister_window(menu);
759    dlg_del_window(dialog);
760    free(prompt);
761
762    *current_item = scrollamt + choice;
763
764    DLG_TRACE2N("current", *current_item);
765    return result;
766}
767
768/*
769 * Display a menu for choosing among a number of options
770 */
771int
772dialog_menu(const char *title,
773	    const char *cprompt,
774	    int height,
775	    int width,
776	    int menu_height,
777	    int item_no,
778	    char **items)
779{
780    int result;
781    int choice;
782    int i, j;
783    DIALOG_LISTITEM *listitems;
784
785    listitems = dlg_calloc(DIALOG_LISTITEM, (size_t) item_no + 1);
786    assert_ptr(listitems, "dialog_menu");
787
788    for (i = j = 0; i < item_no; ++i) {
789	listitems[i].name = items[j++];
790	listitems[i].text = (dialog_vars.no_items
791			     ? dlg_strempty()
792			     : items[j++]);
793	listitems[i].help = ((dialog_vars.item_help)
794			     ? items[j++]
795			     : dlg_strempty());
796    }
797    dlg_align_columns(&listitems[0].text, sizeof(DIALOG_LISTITEM), item_no);
798
799    result = dlg_menu(title,
800		      cprompt,
801		      height,
802		      width,
803		      menu_height,
804		      item_no,
805		      listitems,
806		      &choice,
807		      (dialog_vars.input_menu
808		       ? dlg_renamed_menutext
809		       : dlg_dummy_menutext));
810
811    dlg_free_columns(&listitems[0].text, sizeof(DIALOG_LISTITEM), item_no);
812    free(listitems);
813    return result;
814}
815