1/*
2 *  $Id: fselect.c,v 1.78 2011/06/29 09:48:21 tom Exp $
3 *
4 *  fselect.c -- implements the file-selector box
5 *
6 *  Copyright 2000-2010,2011	Thomas E. Dickey
7 *
8 *  This program is free software; you can redistribute it and/or modify
9 *  it under the terms of the GNU Lesser General Public License, version 2.1
10 *  as published by the Free Software Foundation.
11 *
12 *  This program is distributed in the hope that it will be useful, but
13 *  WITHOUT ANY WARRANTY; without even the implied warranty of
14 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 *  Lesser General Public License for more details.
16 *
17 *  You should have received a copy of the GNU Lesser General Public
18 *  License along with this program; if not, write to
19 *	Free Software Foundation, Inc.
20 *	51 Franklin St., Fifth Floor
21 *	Boston, MA 02110, USA.
22 */
23
24#include <dialog.h>
25#include <dlg_keys.h>
26
27#include <sys/types.h>
28#include <sys/stat.h>
29
30#if HAVE_DIRENT_H
31# include <dirent.h>
32# define NAMLEN(dirent) strlen((dirent)->d_name)
33#else
34# define dirent direct
35# define NAMLEN(dirent) (dirent)->d_namlen
36# if HAVE_SYS_NDIR_H
37#  include <sys/ndir.h>
38# endif
39# if HAVE_SYS_DIR_H
40#  include <sys/dir.h>
41# endif
42# if HAVE_NDIR_H
43#  include <ndir.h>
44# endif
45#endif
46
47# if defined(_FILE_OFFSET_BITS) && defined(HAVE_STRUCT_DIRENT64)
48#  if !defined(_LP64) && (_FILE_OFFSET_BITS == 64)
49#   define      DIRENT  struct dirent64
50#  else
51#   define      DIRENT  struct dirent
52#  endif
53# else
54#  define       DIRENT  struct dirent
55# endif
56
57#define EXT_WIDE 1
58#define HDR_HIGH 1
59#define BTN_HIGH (1 + 2 * MARGIN)	/* Ok/Cancel, also input-box */
60#define MIN_HIGH (HDR_HIGH - MARGIN + (BTN_HIGH * 2) + 4 * MARGIN)
61#define MIN_WIDE (2 * MAX(dlg_count_columns(d_label), dlg_count_columns(f_label)) + 6 * MARGIN + 2 * EXT_WIDE)
62
63#define MOUSE_D (KEY_MAX + 0)
64#define MOUSE_F (KEY_MAX + 10000)
65#define MOUSE_T (KEY_MAX + 20000)
66
67typedef enum {
68    sDIRS = -3
69    ,sFILES = -2
70    ,sTEXT = -1
71} STATES;
72
73typedef struct {
74    WINDOW *par;		/* parent window */
75    WINDOW *win;		/* this window */
76    int length;			/* length of the data[] array */
77    int offset;			/* index of first item on screen */
78    int choice;			/* index of the selection */
79    int mousex;			/* base of mouse-code return-values */
80    unsigned allocd;
81    char **data;
82} LIST;
83
84typedef struct {
85    int length;
86    char **data;
87} MATCH;
88
89static void
90init_list(LIST * list, WINDOW *par, WINDOW *win, int mousex)
91{
92    list->par = par;
93    list->win = win;
94    list->length = 0;
95    list->offset = 0;
96    list->choice = 0;
97    list->mousex = mousex;
98    list->allocd = 0;
99    list->data = 0;
100    dlg_mouse_mkbigregion(getbegy(win), getbegx(win),
101			  getmaxy(win), getmaxx(win),
102			  mousex, 1, 1, 1 /* by lines */ );
103}
104
105static char *
106leaf_of(char *path)
107{
108    char *leaf = strrchr(path, '/');
109    if (leaf != 0)
110	leaf++;
111    else
112	leaf = path;
113    return leaf;
114}
115
116static char *
117data_of(LIST * list)
118{
119    if (list != 0
120	&& list->data != 0)
121	return list->data[list->choice];
122    return 0;
123}
124
125static void
126free_list(LIST * list, int reinit)
127{
128    int n;
129
130    if (list->data != 0) {
131	for (n = 0; list->data[n] != 0; n++)
132	    free(list->data[n]);
133	free(list->data);
134	list->data = 0;
135    }
136    if (reinit)
137	init_list(list, list->par, list->win, list->mousex);
138}
139
140static void
141add_to_list(LIST * list, char *text)
142{
143    unsigned need;
144
145    need = (unsigned) (list->length + 1);
146    if (need + 1 > list->allocd) {
147	list->allocd = 2 * (need + 1);
148	if (list->data == 0) {
149	    list->data = dlg_malloc(char *, list->allocd);
150	} else {
151	    list->data = dlg_realloc(char *, list->allocd, list->data);
152	}
153	assert_ptr(list->data, "add_to_list");
154    }
155    list->data[list->length++] = dlg_strclone(text);
156    list->data[list->length] = 0;
157}
158
159static void
160keep_visible(LIST * list)
161{
162    int high = getmaxy(list->win);
163
164    if (list->choice < list->offset) {
165	list->offset = list->choice;
166    }
167    if (list->choice - list->offset >= high)
168	list->offset = list->choice - high + 1;
169}
170
171#define Value(c) (int)((c) & 0xff)
172
173static int
174find_choice(char *target, LIST * list)
175{
176    int n;
177    int choice = list->choice;
178    int len_1, len_2, cmp_1, cmp_2;
179
180    if (*target == 0) {
181	list->choice = 0;
182    } else {
183	/* find the match with the longest length.  If more than one has the
184	 * same length, choose the one with the closest match of the final
185	 * character.
186	 */
187	len_1 = 0;
188	cmp_1 = 256;
189	for (n = 0; n < list->length; n++) {
190	    char *a = target;
191	    char *b = list->data[n];
192
193	    len_2 = 0;
194	    while ((*a != 0) && (*b != 0) && (*a == *b)) {
195		a++;
196		b++;
197		len_2++;
198	    }
199	    cmp_2 = Value(*a) - Value(*b);
200	    if (cmp_2 < 0)
201		cmp_2 = -cmp_2;
202	    if ((len_2 > len_1)
203		|| (len_1 == len_2 && cmp_2 < cmp_1)) {
204		len_1 = len_2;
205		cmp_1 = cmp_2;
206		list->choice = n;
207	    }
208	}
209    }
210    if (choice != list->choice) {
211	keep_visible(list);
212    }
213    return (choice != list->choice);
214}
215
216static void
217display_list(LIST * list)
218{
219    int n;
220    int x;
221    int y;
222    int top;
223    int bottom;
224
225    if (list->win != 0) {
226	dlg_attr_clear(list->win, getmaxy(list->win), getmaxx(list->win), item_attr);
227	for (n = list->offset; n < list->length && list->data[n]; n++) {
228	    y = n - list->offset;
229	    if (y >= getmaxy(list->win))
230		break;
231	    (void) wmove(list->win, y, 0);
232	    if (n == list->choice)
233		wattrset(list->win, item_selected_attr);
234	    (void) waddstr(list->win, list->data[n]);
235	    wattrset(list->win, item_attr);
236	}
237	wattrset(list->win, item_attr);
238
239	getparyx(list->win, y, x);
240
241	top = y - 1;
242	bottom = y + getmaxy(list->win);
243	dlg_draw_scrollbar(list->par,
244			   (long) list->offset,
245			   (long) list->offset,
246			   (long) (list->offset + getmaxy(list->win)),
247			   (long) (list->length),
248			   x + 1,
249			   x + getmaxx(list->win),
250			   top,
251			   bottom,
252			   menubox_attr,
253			   menubox_border_attr);
254
255	(void) wmove(list->win, list->choice - list->offset, 0);
256	(void) wnoutrefresh(list->win);
257    }
258}
259
260/* FIXME: see arrows.c
261 * This workaround is used to allow two lists to have scroll-tabs at the same
262 * time, by reassigning their return-values to be different.  Just for
263 * readability, we use the names of keys with similar connotations, though all
264 * that is really required is that they're distinct, so we can put them in a
265 * switch statement.
266 */
267static void
268fix_arrows(LIST * list)
269{
270    int x;
271    int y;
272    int top;
273    int bottom;
274
275    if (list->win != 0) {
276	getparyx(list->win, y, x);
277	top = y - 1;
278	bottom = y + getmaxy(list->win);
279
280	mouse_mkbutton(top, x, 6,
281		       ((list->mousex == MOUSE_D)
282			? KEY_PREVIOUS
283			: KEY_PPAGE));
284	mouse_mkbutton(bottom, x, 6,
285		       ((list->mousex == MOUSE_D)
286			? KEY_NEXT
287			: KEY_NPAGE));
288    }
289}
290
291static int
292show_list(char *target, LIST * list, int keep)
293{
294    int changed = keep || find_choice(target, list);
295    display_list(list);
296    return changed;
297}
298
299/*
300 * Highlight the closest match to 'target' in the given list, setting offset
301 * to match.
302 */
303static int
304show_both_lists(char *input, LIST * d_list, LIST * f_list, int keep)
305{
306    char *leaf = leaf_of(input);
307
308    return show_list(leaf, d_list, keep) | show_list(leaf, f_list, keep);
309}
310
311/*
312 * Move up/down in the given list
313 */
314static bool
315change_list(int choice, LIST * list)
316{
317    if (data_of(list) != 0) {
318	int last = list->length - 1;
319
320	choice += list->choice;
321	if (choice < 0)
322	    choice = 0;
323	if (choice > last)
324	    choice = last;
325	list->choice = choice;
326	keep_visible(list);
327	display_list(list);
328	return TRUE;
329    }
330    return FALSE;
331}
332
333static void
334scroll_list(int direction, LIST * list)
335{
336    if (data_of(list) != 0) {
337	int length = getmaxy(list->win);
338	if (change_list(direction * length, list))
339	    return;
340    }
341    beep();
342}
343
344static int
345compar(const void *a, const void *b)
346{
347    return strcmp(*(const char *const *) a, *(const char *const *) b);
348}
349
350static void
351match(char *name, LIST * d_list, LIST * f_list, MATCH * match_list)
352{
353    char *test = leaf_of(name);
354    size_t test_len = strlen(test);
355    char **matches = dlg_malloc(char *, (size_t) (d_list->length + f_list->length));
356    size_t data_len = 0;
357    int i;
358    for (i = 2; i < d_list->length; i++) {
359	if (strncmp(test, d_list->data[i], test_len) == 0) {
360	    matches[data_len++] = d_list->data[i];
361	}
362    }
363    for (i = 0; i < f_list->length; i++) {
364	if (strncmp(test, f_list->data[i], test_len) == 0) {
365	    matches[data_len++] = f_list->data[i];
366	}
367    }
368    matches = dlg_realloc(char *, data_len, matches);
369    match_list->data = matches;
370    match_list->length = (int) data_len;
371}
372
373static void
374free_match(MATCH * match_list)
375{
376    free(match_list->data);
377    match_list->length = 0;
378}
379
380static int
381complete(char *name, LIST * d_list, LIST * f_list, char **buff_ptr)
382{
383    MATCH match_list;
384    char *test;
385    size_t test_len;
386    size_t i;
387    int j;
388    char *buff;
389
390    match(name, d_list, f_list, &match_list);
391    if (match_list.length == 0) {
392	*buff_ptr = NULL;
393	return 0;
394    }
395
396    test = match_list.data[0];
397    test_len = strlen(test);
398    buff = dlg_malloc(char, test_len + 2);
399    if (match_list.length == 1) {
400	strcpy(buff, test);
401	i = test_len;
402	if (test == data_of(d_list)) {
403	    buff[test_len] = '/';
404	    i++;
405	}
406    } else {
407	for (i = 0; i < test_len; i++) {
408	    char test_char = test[i];
409	    if (test_char == '\0')
410		break;
411	    for (j = 0; j < match_list.length; j++) {
412		if (match_list.data[j][i] != test_char) {
413		    break;
414		}
415	    }
416	    if (j == match_list.length) {
417		(buff)[i] = test_char;
418	    } else
419		break;
420	}
421	buff = dlg_realloc(char, i + 1, buff);
422    }
423    free_match(&match_list);
424    buff[i] = '\0';
425    *buff_ptr = buff;
426    return (i != 0);
427}
428
429static bool
430fill_lists(char *current, char *input, LIST * d_list, LIST * f_list, int keep)
431{
432    DIR *dp;
433    DIRENT *de;
434    struct stat sb;
435    int n;
436    char path[MAX_LEN + 1];
437    char *leaf;
438
439    /* check if we've updated the lists */
440    for (n = 0; current[n] && input[n]; n++) {
441	if (current[n] != input[n])
442	    break;
443    }
444    if (current[n] == input[n])
445	return FALSE;
446    if (strchr(current + n, '/') == 0
447	&& strchr(input + n, '/') == 0) {
448	return show_both_lists(input, d_list, f_list, keep);
449    }
450
451    strcpy(current, input);
452
453    /* refill the lists */
454    free_list(d_list, TRUE);
455    free_list(f_list, TRUE);
456    strcpy(path, current);
457    if ((leaf = strrchr(path, '/')) != 0) {
458	*++leaf = 0;
459    } else {
460	strcpy(path, "./");
461	leaf = path + strlen(path);
462    }
463    if ((dp = opendir(path)) != 0) {
464	while ((de = readdir(dp)) != 0) {
465	    strncpy(leaf, de->d_name, NAMLEN(de))[NAMLEN(de)] = 0;
466	    if (stat(path, &sb) == 0) {
467		if ((sb.st_mode & S_IFMT) == S_IFDIR)
468		    add_to_list(d_list, leaf);
469		else if (f_list->win)
470		    add_to_list(f_list, leaf);
471	    }
472	}
473	(void) closedir(dp);
474	/* sort the lists */
475	qsort(d_list->data,
476	      (size_t) d_list->length,
477	      sizeof(d_list->data[0]),
478	      compar);
479	qsort(f_list->data,
480	      (size_t) f_list->length,
481	      sizeof(f_list->data[0]),
482	      compar);
483    }
484
485    (void) show_both_lists(input, d_list, f_list, FALSE);
486    d_list->offset = d_list->choice;
487    f_list->offset = f_list->choice;
488    return TRUE;
489}
490
491static bool
492usable_state(int state, LIST * dirs, LIST * files)
493{
494    bool result;
495
496    switch (state) {
497    case sDIRS:
498	result = (dirs->win != 0) && (data_of(dirs) != 0);
499	break;
500    case sFILES:
501	result = (files->win != 0) && (data_of(files) != 0);
502	break;
503    default:
504	result = TRUE;
505	break;
506    }
507    return result;
508}
509
510#define which_list() ((state == sFILES) \
511			? &f_list \
512			: ((state == sDIRS) \
513			  ? &d_list \
514			  : 0))
515#define NAVIGATE_BINDINGS \
516	DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ), \
517	DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), \
518	DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), \
519	DLG_KEYS_DATA( DLGK_ITEM_NEXT,  KEY_DOWN ), \
520	DLG_KEYS_DATA( DLGK_ITEM_NEXT,  CHR_NEXT ), \
521	DLG_KEYS_DATA( DLGK_ITEM_NEXT,  KEY_NEXT ), \
522	DLG_KEYS_DATA( DLGK_ITEM_PREV,  CHR_PREVIOUS ), \
523	DLG_KEYS_DATA( DLGK_ITEM_PREV,  KEY_UP ), \
524	DLG_KEYS_DATA( DLGK_PAGE_NEXT,  KEY_NPAGE ), \
525	DLG_KEYS_DATA( DLGK_PAGE_PREV,  KEY_PPAGE )
526
527/*
528 * Display a dialog box for entering a filename
529 */
530static int
531dlg_fselect(const char *title, const char *path, int height, int width, int dselect)
532{
533    /* *INDENT-OFF* */
534    static DLG_KEYS_BINDING binding[] = {
535	HELPKEY_BINDINGS,
536	ENTERKEY_BINDINGS,
537	NAVIGATE_BINDINGS,
538	END_KEYS_BINDING
539    };
540    static DLG_KEYS_BINDING binding2[] = {
541	INPUTSTR_BINDINGS,
542	HELPKEY_BINDINGS,
543	ENTERKEY_BINDINGS,
544	NAVIGATE_BINDINGS,
545	END_KEYS_BINDING
546    };
547    /* *INDENT-ON* */
548
549#ifdef KEY_RESIZE
550    int old_height = height;
551    int old_width = width;
552    bool resized = FALSE;
553#endif
554    int tbox_y, tbox_x, tbox_width, tbox_height;
555    int dbox_y, dbox_x, dbox_width, dbox_height;
556    int fbox_y, fbox_x, fbox_width, fbox_height;
557    int show_buttons = TRUE;
558    int offset = 0;
559    int key = 0;
560    int fkey = FALSE;
561    int code;
562    int result = DLG_EXIT_UNKNOWN;
563    int state = dialog_vars.defaultno ? dlg_defaultno_button() : sTEXT;
564    int button = state;
565    int first = (state == sTEXT);
566    char *input;
567    char *completed;
568    char current[MAX_LEN + 1];
569    WINDOW *dialog = 0;
570    WINDOW *w_text = 0;
571    WINDOW *w_work = 0;
572    const char **buttons = dlg_ok_labels();
573    const char *d_label = _("Directories");
574    const char *f_label = _("Files");
575    char *partial;
576    int min_wide = MIN_WIDE;
577    int min_items = height ? 0 : 4;
578    LIST d_list, f_list;
579
580    dlg_does_output();
581
582    /* Set up the initial value */
583    input = dlg_set_result(path);
584    offset = (int) strlen(input);
585    *current = 0;
586
587    dlg_button_layout(buttons, &min_wide);
588
589#ifdef KEY_RESIZE
590  retry:
591#endif
592    dlg_auto_size(title, (char *) 0, &height, &width, 6, 25);
593    height += MIN_HIGH + min_items;
594    if (width < min_wide)
595	width = min_wide;
596    dlg_print_size(height, width);
597    dlg_ctl_size(height, width);
598
599    dialog = dlg_new_window(height, width,
600			    dlg_box_y_ordinate(height),
601			    dlg_box_x_ordinate(width));
602    dlg_register_window(dialog, "fselect", binding);
603    dlg_register_buttons(dialog, "fselect", buttons);
604
605    dlg_mouse_setbase(0, 0);
606
607    dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
608    dlg_draw_bottom_box(dialog);
609    dlg_draw_title(dialog, title);
610
611    wattrset(dialog, dialog_attr);
612
613    /* Draw the input field box */
614    tbox_height = 1;
615    tbox_width = width - (4 * MARGIN + 2);
616    tbox_y = height - (BTN_HIGH * 2) + MARGIN;
617    tbox_x = (width - tbox_width) / 2;
618
619    w_text = derwin(dialog, tbox_height, tbox_width, tbox_y, tbox_x);
620    if (w_text == 0)
621	return DLG_EXIT_ERROR;
622
623    (void) keypad(w_text, TRUE);
624    dlg_draw_box(dialog, tbox_y - MARGIN, tbox_x - MARGIN,
625		 (2 * MARGIN + 1), tbox_width + (MARGIN + EXT_WIDE),
626		 menubox_border_attr, menubox_attr);
627    dlg_mouse_mkbigregion(getbegy(dialog) + tbox_y - MARGIN,
628			  getbegx(dialog) + tbox_x - MARGIN,
629			  1 + (2 * MARGIN),
630			  tbox_width + (MARGIN + EXT_WIDE),
631			  MOUSE_T, 1, 1, 3 /* doesn't matter */ );
632
633    dlg_register_window(w_text, "fselect", binding2);
634
635    /* Draw the directory listing box */
636    if (dselect)
637	dbox_width = (width - (6 * MARGIN));
638    else
639	dbox_width = (width - (6 * MARGIN + 2 * EXT_WIDE)) / 2;
640    dbox_height = height - MIN_HIGH;
641    dbox_y = (2 * MARGIN + 1);
642    dbox_x = tbox_x;
643
644    w_work = derwin(dialog, dbox_height, dbox_width, dbox_y, dbox_x);
645    if (w_work == 0)
646	return DLG_EXIT_ERROR;
647
648    (void) keypad(w_work, TRUE);
649    (void) mvwprintw(dialog, dbox_y - (MARGIN + 1), dbox_x - MARGIN, d_label);
650    dlg_draw_box(dialog,
651		 dbox_y - MARGIN, dbox_x - MARGIN,
652		 dbox_height + (MARGIN + 1), dbox_width + (MARGIN + 1),
653		 menubox_border_attr, menubox_attr);
654    init_list(&d_list, dialog, w_work, MOUSE_D);
655
656    if (!dselect) {
657	/* Draw the filename listing box */
658	fbox_height = dbox_height;
659	fbox_width = dbox_width;
660	fbox_y = dbox_y;
661	fbox_x = tbox_x + dbox_width + (2 * MARGIN);
662
663	w_work = derwin(dialog, fbox_height, fbox_width, fbox_y, fbox_x);
664	if (w_work == 0)
665	    return DLG_EXIT_ERROR;
666
667	(void) keypad(w_work, TRUE);
668	(void) mvwprintw(dialog, fbox_y - (MARGIN + 1), fbox_x - MARGIN, f_label);
669	dlg_draw_box(dialog,
670		     fbox_y - MARGIN, fbox_x - MARGIN,
671		     fbox_height + (MARGIN + 1), fbox_width + (MARGIN + 1),
672		     menubox_border_attr, menubox_attr);
673	init_list(&f_list, dialog, w_work, MOUSE_F);
674    } else {
675	memset(&f_list, 0, sizeof(f_list));
676    }
677
678    while (result == DLG_EXIT_UNKNOWN) {
679
680	if (fill_lists(current, input, &d_list, &f_list, state < sTEXT))
681	    show_buttons = TRUE;
682
683#ifdef KEY_RESIZE
684	if (resized) {
685	    resized = FALSE;
686	    dlg_show_string(w_text, input, offset, inputbox_attr,
687			    0, 0, tbox_width, (bool) 0, (bool) first);
688	}
689#endif
690
691	/*
692	 * The last field drawn determines where the cursor is shown:
693	 */
694	if (show_buttons) {
695	    show_buttons = FALSE;
696	    button = (state < 0) ? 0 : state;
697	    dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
698	}
699	if (state < 0) {
700	    switch (state) {
701	    case sTEXT:
702		dlg_set_focus(dialog, w_text);
703		break;
704	    case sFILES:
705		dlg_set_focus(dialog, f_list.win);
706		break;
707	    case sDIRS:
708		dlg_set_focus(dialog, d_list.win);
709		break;
710	    }
711	}
712
713	if (first) {
714	    (void) wrefresh(dialog);
715	} else {
716	    fix_arrows(&d_list);
717	    fix_arrows(&f_list);
718	    key = dlg_mouse_wgetch((state == sTEXT) ? w_text : dialog, &fkey);
719	    if (dlg_result_key(key, fkey, &result))
720		break;
721	}
722
723	if (!fkey && key == ' ') {
724	    key = DLGK_SELECT;
725	    fkey = TRUE;
726	}
727
728	if (fkey) {
729	    switch (key) {
730	    case DLGK_MOUSE(KEY_PREVIOUS):
731		state = sDIRS;
732		scroll_list(-1, which_list());
733		continue;
734	    case DLGK_MOUSE(KEY_NEXT):
735		state = sDIRS;
736		scroll_list(1, which_list());
737		continue;
738	    case DLGK_MOUSE(KEY_PPAGE):
739		state = sFILES;
740		scroll_list(-1, which_list());
741		continue;
742	    case DLGK_MOUSE(KEY_NPAGE):
743		state = sFILES;
744		scroll_list(1, which_list());
745		continue;
746	    case DLGK_PAGE_PREV:
747		scroll_list(-1, which_list());
748		continue;
749	    case DLGK_PAGE_NEXT:
750		scroll_list(1, which_list());
751		continue;
752	    case DLGK_ITEM_PREV:
753		if (change_list(-1, which_list()))
754		    continue;
755		/* FALLTHRU */
756	    case DLGK_FIELD_PREV:
757		show_buttons = TRUE;
758		do {
759		    state = dlg_prev_ok_buttonindex(state, sDIRS);
760		} while (!usable_state(state, &d_list, &f_list));
761		continue;
762	    case DLGK_ITEM_NEXT:
763		if (change_list(1, which_list()))
764		    continue;
765		/* FALLTHRU */
766	    case DLGK_FIELD_NEXT:
767		show_buttons = TRUE;
768		do {
769		    state = dlg_next_ok_buttonindex(state, sDIRS);
770		} while (!usable_state(state, &d_list, &f_list));
771		continue;
772	    case DLGK_SELECT:
773		completed = 0;
774		partial = 0;
775		if (state == sFILES && !dselect) {
776		    completed = data_of(&f_list);
777		} else if (state == sDIRS) {
778		    completed = data_of(&d_list);
779		} else {
780		    if (complete(input, &d_list, &f_list, &partial)) {
781			completed = partial;
782		    }
783		}
784		if (completed != 0) {
785		    state = sTEXT;
786		    show_buttons = TRUE;
787		    strcpy(leaf_of(input), completed);
788		    offset = (int) strlen(input);
789		    dlg_show_string(w_text, input, offset, inputbox_attr,
790				    0, 0, tbox_width, 0, first);
791		    if (partial != NULL)
792			free(partial);
793		    continue;
794		} else {	/* if (state < sTEXT) */
795		    (void) beep();
796		    continue;
797		}
798		/* FALLTHRU */
799	    case DLGK_ENTER:
800		result = (state > 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK;
801		continue;
802#ifdef KEY_RESIZE
803	    case KEY_RESIZE:
804		/* reset data */
805		height = old_height;
806		width = old_width;
807		show_buttons = TRUE;
808		*current = 0;
809		resized = TRUE;
810		/* repaint */
811		dlg_clear();
812		dlg_del_window(dialog);
813		refresh();
814		dlg_mouse_free_regions();
815		goto retry;
816#endif
817	    default:
818		if (key >= DLGK_MOUSE(MOUSE_T)) {
819		    state = sTEXT;
820		    continue;
821		} else if (key >= DLGK_MOUSE(MOUSE_F)) {
822		    if (f_list.win != 0) {
823			state = sFILES;
824			f_list.choice = (key - DLGK_MOUSE(MOUSE_F)) + f_list.offset;
825			display_list(&f_list);
826		    }
827		    continue;
828		} else if (key >= DLGK_MOUSE(MOUSE_D)) {
829		    if (d_list.win != 0) {
830			state = sDIRS;
831			d_list.choice = (key - DLGK_MOUSE(MOUSE_D)) + d_list.offset;
832			display_list(&d_list);
833		    }
834		    continue;
835		} else if (is_DLGK_MOUSE(key)
836			   && (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
837		    result = code;
838		    continue;
839		}
840		break;
841	    }
842	}
843
844	if (state < 0) {	/* Input box selected if we're editing */
845	    int edit = dlg_edit_string(input, &offset, key, fkey, first);
846
847	    if (edit) {
848		dlg_show_string(w_text, input, offset, inputbox_attr,
849				0, 0, tbox_width, 0, first);
850		first = FALSE;
851		state = sTEXT;
852	    }
853	} else if (state >= 0 &&
854		   (code = dlg_char_to_button(key, buttons)) >= 0) {
855	    result = dlg_ok_buttoncode(code);
856	    break;
857	}
858    }
859
860    dlg_unregister_window(w_text);
861    dlg_del_window(dialog);
862    dlg_mouse_free_regions();
863    free_list(&d_list, FALSE);
864    free_list(&f_list, FALSE);
865    return result;
866}
867
868/*
869 * Display a dialog box for entering a filename
870 */
871int
872dialog_fselect(const char *title, const char *path, int height, int width)
873{
874    return dlg_fselect(title, path, height, width, FALSE);
875}
876
877/*
878 * Display a dialog box for entering a directory
879 */
880int
881dialog_dselect(const char *title, const char *path, int height, int width)
882{
883    return dlg_fselect(title, path, height, width, TRUE);
884}
885