scripts/kconfig/lxdialog/util.c

   1 /*
   2  *  util.c
   3  *
   4  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
   5  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
   6  *
   7  *  This program is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU General Public License
   9  *  as published by the Free Software Foundation; either version 2
  10  *  of the License, or (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include "dialog.h"
  23
  24 struct dialog_info dlg;
  25
  26 static void set_mono_theme(void)
  27 {
  28         dlg.screen.atr = A_NORMAL;
  29         dlg.shadow.atr = A_NORMAL;
  30         dlg.dialog.atr = A_NORMAL;
  31         dlg.title.atr = A_BOLD;
  32         dlg.border.atr = A_NORMAL;
  33         dlg.button_active.atr = A_REVERSE;
  34         dlg.button_inactive.atr = A_DIM;
  35         dlg.button_key_active.atr = A_REVERSE;
  36         dlg.button_key_inactive.atr = A_BOLD;
  37         dlg.button_label_active.atr = A_REVERSE;
  38         dlg.button_label_inactive.atr = A_NORMAL;
  39         dlg.inputbox.atr = A_NORMAL;
  40         dlg.inputbox_border.atr = A_NORMAL;
  41         dlg.searchbox.atr = A_NORMAL;
  42         dlg.searchbox_title.atr = A_BOLD;
  43         dlg.searchbox_border.atr = A_NORMAL;
  44         dlg.position_indicator.atr = A_BOLD;
  45         dlg.menubox.atr = A_NORMAL;
  46         dlg.menubox_border.atr = A_NORMAL;
  47         dlg.item.atr = A_NORMAL;
  48         dlg.item_selected.atr = A_REVERSE;
  49         dlg.tag.atr = A_BOLD;
  50         dlg.tag_selected.atr = A_REVERSE;
  51         dlg.tag_key.atr = A_BOLD;
  52         dlg.tag_key_selected.atr = A_REVERSE;
  53         dlg.check.atr = A_BOLD;
  54         dlg.check_selected.atr = A_REVERSE;
  55         dlg.uarrow.atr = A_BOLD;
  56         dlg.darrow.atr = A_BOLD;
  57 }
  58
  59 #define DLG_COLOR(dialog, f, b, h) \
  60 do {                               \
  61         dlg.dialog.fg = (f);       \
  62         dlg.dialog.bg = (b);       \
  63         dlg.dialog.hl = (h);       \
  64 } while (0)
  65
  66 static void set_classic_theme(void)
  67 {
  68         DLG_COLOR(screen,                COLOR_CYAN,   COLOR_BLUE,   true);
  69         DLG_COLOR(shadow,                COLOR_BLACK,  COLOR_BLACK,  true);
  70         DLG_COLOR(dialog,                COLOR_BLACK,  COLOR_WHITE,  false);
  71         DLG_COLOR(title,                 COLOR_YELLOW, COLOR_WHITE,  true);
  72         DLG_COLOR(border,                COLOR_WHITE,  COLOR_WHITE,  true);
  73         DLG_COLOR(button_active,         COLOR_WHITE,  COLOR_BLUE,   true);
  74         DLG_COLOR(button_inactive,       COLOR_BLACK,  COLOR_WHITE,  false);
  75         DLG_COLOR(button_key_active,     COLOR_WHITE,  COLOR_BLUE,   true);
  76         DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_WHITE,  false);
  77         DLG_COLOR(button_label_active,   COLOR_YELLOW, COLOR_BLUE,   true);
  78         DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_WHITE,  true);
  79         DLG_COLOR(inputbox,              COLOR_BLACK,  COLOR_WHITE,  false);
  80         DLG_COLOR(inputbox_border,       COLOR_BLACK,  COLOR_WHITE,  false);
  81         DLG_COLOR(searchbox,             COLOR_BLACK,  COLOR_WHITE,  false);
  82         DLG_COLOR(searchbox_title,       COLOR_YELLOW, COLOR_WHITE,  true);
  83         DLG_COLOR(searchbox_border,      COLOR_WHITE,  COLOR_WHITE,  true);
  84         DLG_COLOR(position_indicator,    COLOR_YELLOW, COLOR_WHITE,  true);
  85         DLG_COLOR(menubox,               COLOR_BLACK,  COLOR_WHITE,  false);
  86         DLG_COLOR(menubox_border,        COLOR_WHITE,  COLOR_WHITE,  true);
  87         DLG_COLOR(item,                  COLOR_BLACK,  COLOR_WHITE,  false);
  88         DLG_COLOR(item_selected,         COLOR_WHITE,  COLOR_BLUE,   true);
  89         DLG_COLOR(tag,                   COLOR_YELLOW, COLOR_WHITE,  true);
  90         DLG_COLOR(tag_selected,          COLOR_YELLOW, COLOR_BLUE,   true);
  91         DLG_COLOR(tag_key,               COLOR_YELLOW, COLOR_WHITE,  true);
  92         DLG_COLOR(tag_key_selected,      COLOR_YELLOW, COLOR_BLUE,   true);
  93         DLG_COLOR(check,                 COLOR_BLACK,  COLOR_WHITE,  false);
  94         DLG_COLOR(check_selected,        COLOR_WHITE,  COLOR_BLUE,   true);
  95         DLG_COLOR(uarrow,                COLOR_GREEN,  COLOR_WHITE,  true);
  96         DLG_COLOR(darrow,                COLOR_GREEN,  COLOR_WHITE,  true);
  97 }
  98
  99 static void set_blackbg_theme(void)
 100 {
 101         DLG_COLOR(screen, COLOR_RED,   COLOR_BLACK, true);
 102         DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
 103         DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
 104         DLG_COLOR(title,  COLOR_RED,   COLOR_BLACK, false);
 105         DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
 106
 107         DLG_COLOR(button_active,         COLOR_YELLOW, COLOR_RED,   false);
 108         DLG_COLOR(button_inactive,       COLOR_YELLOW, COLOR_BLACK, false);
 109         DLG_COLOR(button_key_active,     COLOR_YELLOW, COLOR_RED,   true);
 110         DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_BLACK, false);
 111         DLG_COLOR(button_label_active,   COLOR_WHITE,  COLOR_RED,   false);
 112         DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_BLACK, true);
 113
 114         DLG_COLOR(inputbox,         COLOR_YELLOW, COLOR_BLACK, false);
 115         DLG_COLOR(inputbox_border,  COLOR_YELLOW, COLOR_BLACK, false);
 116
 117         DLG_COLOR(searchbox,        COLOR_YELLOW, COLOR_BLACK, false);
 118         DLG_COLOR(searchbox_title,  COLOR_YELLOW, COLOR_BLACK, true);
 119         DLG_COLOR(searchbox_border, COLOR_BLACK,  COLOR_BLACK, true);
 120
 121         DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK,  false);
 122
 123         DLG_COLOR(menubox,          COLOR_YELLOW, COLOR_BLACK, false);
 124         DLG_COLOR(menubox_border,   COLOR_BLACK,  COLOR_BLACK, true);
 125
 126         DLG_COLOR(item,             COLOR_WHITE, COLOR_BLACK, false);
 127         DLG_COLOR(item_selected,    COLOR_WHITE, COLOR_RED,   false);
 128
 129         DLG_COLOR(tag,              COLOR_RED,    COLOR_BLACK, false);
 130         DLG_COLOR(tag_selected,     COLOR_YELLOW, COLOR_RED,   true);
 131         DLG_COLOR(tag_key,          COLOR_RED,    COLOR_BLACK, false);
 132         DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED,   true);
 133
 134         DLG_COLOR(check,            COLOR_YELLOW, COLOR_BLACK, false);
 135         DLG_COLOR(check_selected,   COLOR_YELLOW, COLOR_RED,   true);
 136
 137         DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
 138         DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
 139 }
 140
 141 static void set_bluetitle_theme(void)
 142 {
 143         set_classic_theme();
 144         DLG_COLOR(title,               COLOR_BLUE,   COLOR_WHITE, true);
 145         DLG_COLOR(button_key_active,   COLOR_YELLOW, COLOR_BLUE,  true);
 146         DLG_COLOR(button_label_active, COLOR_WHITE,  COLOR_BLUE,  true);
 147         DLG_COLOR(searchbox_title,     COLOR_BLUE,   COLOR_WHITE, true);
 148         DLG_COLOR(position_indicator,  COLOR_BLUE,   COLOR_WHITE, true);
 149         DLG_COLOR(tag,                 COLOR_BLUE,   COLOR_WHITE, true);
 150         DLG_COLOR(tag_key,             COLOR_BLUE,   COLOR_WHITE, true);
 151
 152 }
 153
 154 /*
 155  * Select color theme
 156  */
 157 static int set_theme(const char *theme)
 158 {
 159         int use_color = 1;
 160         if (!theme)
 161                 set_bluetitle_theme();
 162         else if (strcmp(theme, "classic") == 0)
 163                 set_classic_theme();
 164         else if (strcmp(theme, "bluetitle") == 0)
 165                 set_bluetitle_theme();
 166         else if (strcmp(theme, "blackbg") == 0)
 167                 set_blackbg_theme();
 168         else if (strcmp(theme, "mono") == 0)
 169                 use_color = 0;
 170
 171         return use_color;
 172 }
 173
 174 static void init_one_color(struct dialog_color *color)
 175 {
 176         static int pair = 0;
 177
 178         pair++;
 179         init_pair(pair, color->fg, color->bg);
 180         if (color->hl)
 181                 color->atr = A_BOLD | COLOR_PAIR(pair);
 182         else
 183                 color->atr = COLOR_PAIR(pair);
 184 }
 185
 186 static void init_dialog_colors(void)
 187 {
 188         init_one_color(&dlg.screen);
 189         init_one_color(&dlg.shadow);
 190         init_one_color(&dlg.dialog);
 191         init_one_color(&dlg.title);
 192         init_one_color(&dlg.border);
 193         init_one_color(&dlg.button_active);
 194         init_one_color(&dlg.button_inactive);
 195         init_one_color(&dlg.button_key_active);
 196         init_one_color(&dlg.button_key_inactive);
 197         init_one_color(&dlg.button_label_active);
 198         init_one_color(&dlg.button_label_inactive);
 199         init_one_color(&dlg.inputbox);
 200         init_one_color(&dlg.inputbox_border);
 201         init_one_color(&dlg.searchbox);
 202         init_one_color(&dlg.searchbox_title);
 203         init_one_color(&dlg.searchbox_border);
 204         init_one_color(&dlg.position_indicator);
 205         init_one_color(&dlg.menubox);
 206         init_one_color(&dlg.menubox_border);
 207         init_one_color(&dlg.item);
 208         init_one_color(&dlg.item_selected);
 209         init_one_color(&dlg.tag);
 210         init_one_color(&dlg.tag_selected);
 211         init_one_color(&dlg.tag_key);
 212         init_one_color(&dlg.tag_key_selected);
 213         init_one_color(&dlg.check);
 214         init_one_color(&dlg.check_selected);
 215         init_one_color(&dlg.uarrow);
 216         init_one_color(&dlg.darrow);
 217 }
 218
 219 /*
 220  * Setup for color display
 221  */
 222 static void color_setup(const char *theme)
 223 {
 224         int use_color;
 225
 226         use_color = set_theme(theme);
 227         if (use_color && has_colors()) {
 228                 start_color();
 229                 init_dialog_colors();
 230         } else
 231                 set_mono_theme();
 232 }
 233
 234 /*
 235  * Set window to attribute 'attr'
 236  */
 237 void attr_clear(WINDOW * win, int height, int width, chtype attr)
 238 {
 239         int i, j;
 240
 241         wattrset(win, attr);
 242         for (i = 0; i < height; i++) {
 243                 wmove(win, i, 0);
 244                 for (j = 0; j < width; j++)
 245                         waddch(win, ' ');
 246         }
 247         touchwin(win);
 248 }
 249
 250 void dialog_clear(void)
 251 {
 252         attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
 253         /* Display background title if it exists ... - SLH */
 254         if (dlg.backtitle != NULL) {
 255                 int i;
 256
 257                 wattrset(stdscr, dlg.screen.atr);
 258                 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
 259                 wmove(stdscr, 1, 1);
 260                 for (i = 1; i < COLS - 1; i++)
 261                         waddch(stdscr, ACS_HLINE);
 262         }
 263         wnoutrefresh(stdscr);
 264 }
 265
 266 /*
 267  * Do some initialization for dialog
 268  */
 269 int init_dialog(const char *backtitle)
 270 {
 271         int height, width;
 272
 273         initscr();              /* Init curses */
 274         getmaxyx(stdscr, height, width);
 275         if (height < 19 || width < 80) {
 276                 endwin();
 277                 return -ERRDISPLAYTOOSMALL;
 278         }
 279
 280         dlg.backtitle = backtitle;
 281         color_setup(getenv("MENUCONFIG_COLOR"));
 282
 283         keypad(stdscr, TRUE);
 284         cbreak();
 285         noecho();
 286         dialog_clear();
 287
 288         return 0;
 289 }
 290
 291 void set_dialog_backtitle(const char *backtitle)
 292 {
 293         dlg.backtitle = backtitle;
 294 }
 295
 296 /*
 297  * End using dialog functions.
 298  */
 299 void end_dialog(int x, int y)
 300 {
 301         /* move cursor back to original position */
 302         move(y, x);
 303         refresh();
 304         endwin();
 305 }
 306
 307 /* Print the title of the dialog. Center the title and truncate
 308  * tile if wider than dialog (- 2 chars).
 309  **/
 310 void print_title(WINDOW *dialog, const char *title, int width)
 311 {
 312         if (title) {
 313                 int tlen = MIN(width - 2, strlen(title));
 314                 wattrset(dialog, dlg.title.atr);
 315                 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
 316                 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
 317                 waddch(dialog, ' ');
 318         }
 319 }
 320
 321 /*
 322  * Print a string of text in a window, automatically wrap around to the
 323  * next line if the string is too long to fit on one line. Newline
 324  * characters '\n' are replaced by spaces.  We start on a new line
 325  * if there is no room for at least 4 nonblanks following a double-space.
 326  */
 327 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
 328 {
 329         int newl, cur_x, cur_y;
 330         int i, prompt_len, room, wlen;
 331         char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
 332
 333         strcpy(tempstr, prompt);
 334
 335         prompt_len = strlen(tempstr);
 336
 337         /*
 338          * Remove newlines
 339          */
 340         for (i = 0; i < prompt_len; i++) {
 341                 if (tempstr[i] == '\n')
 342                         tempstr[i] = ' ';
 343         }
 344
 345         if (prompt_len <= width - x * 2) {      /* If prompt is short */
 346                 wmove(win, y, (width - prompt_len) / 2);
 347                 waddstr(win, tempstr);
 348         } else {
 349                 cur_x = x;
 350                 cur_y = y;
 351                 newl = 1;
 352                 word = tempstr;
 353                 while (word && *word) {
 354                         sp = strchr(word, ' ');
 355                         if (sp)
 356                                 *sp++ = 0;
 357
 358                         /* Wrap to next line if either the word does not fit,
 359                            or it is the first word of a new sentence, and it is
 360                            short, and the next word does not fit. */
 361                         room = width - cur_x;
 362                         wlen = strlen(word);
 363                         if (wlen > room ||
 364                             (newl && wlen < 4 && sp
 365                              && wlen + 1 + strlen(sp) > room
 366                              && (!(sp2 = strchr(sp, ' '))
 367                                  || wlen + 1 + (sp2 - sp) > room))) {
 368                                 cur_y++;
 369                                 cur_x = x;
 370                         }
 371                         wmove(win, cur_y, cur_x);
 372                         waddstr(win, word);
 373                         getyx(win, cur_y, cur_x);
 374                         cur_x++;
 375                         if (sp && *sp == ' ') {
 376                                 cur_x++;        /* double space */
 377                                 while (*++sp == ' ') ;
 378                                 newl = 1;
 379                         } else
 380                                 newl = 0;
 381                         word = sp;
 382                 }
 383         }
 384 }
 385
 386 /*
 387  * Print a button
 388  */
 389 void print_button(WINDOW * win, const char *label, int y, int x, int selected)
 390 {
 391         int i, temp;
 392
 393         wmove(win, y, x);
 394         wattrset(win, selected ? dlg.button_active.atr
 395                  : dlg.button_inactive.atr);
 396         waddstr(win, "<");
 397         temp = strspn(label, " ");
 398         label += temp;
 399         wattrset(win, selected ? dlg.button_label_active.atr
 400                  : dlg.button_label_inactive.atr);
 401         for (i = 0; i < temp; i++)
 402                 waddch(win, ' ');
 403         wattrset(win, selected ? dlg.button_key_active.atr
 404                  : dlg.button_key_inactive.atr);
 405         waddch(win, label[0]);
 406         wattrset(win, selected ? dlg.button_label_active.atr
 407                  : dlg.button_label_inactive.atr);
 408         waddstr(win, (char *)label + 1);
 409         wattrset(win, selected ? dlg.button_active.atr
 410                  : dlg.button_inactive.atr);
 411         waddstr(win, ">");
 412         wmove(win, y, x + temp + 1);
 413 }
 414
 415 /*
 416  * Draw a rectangular box with line drawing characters
 417  */
 418 void
 419 draw_box(WINDOW * win, int y, int x, int height, int width,
 420          chtype box, chtype border)
 421 {
 422         int i, j;
 423
 424         wattrset(win, 0);
 425         for (i = 0; i < height; i++) {
 426                 wmove(win, y + i, x);
 427                 for (j = 0; j < width; j++)
 428                         if (!i && !j)
 429                                 waddch(win, border | ACS_ULCORNER);
 430                         else if (i == height - 1 && !j)
 431                                 waddch(win, border | ACS_LLCORNER);
 432                         else if (!i && j == width - 1)
 433                                 waddch(win, box | ACS_URCORNER);
 434                         else if (i == height - 1 && j == width - 1)
 435                                 waddch(win, box | ACS_LRCORNER);
 436                         else if (!i)
 437                                 waddch(win, border | ACS_HLINE);
 438                         else if (i == height - 1)
 439                                 waddch(win, box | ACS_HLINE);
 440                         else if (!j)
 441                                 waddch(win, border | ACS_VLINE);
 442                         else if (j == width - 1)
 443                                 waddch(win, box | ACS_VLINE);
 444                         else
 445                                 waddch(win, box | ' ');
 446         }
 447 }
 448
 449 /*
 450  * Draw shadows along the right and bottom edge to give a more 3D look
 451  * to the boxes
 452  */
 453 void draw_shadow(WINDOW * win, int y, int x, int height, int width)
 454 {
 455         int i;
 456
 457         if (has_colors()) {     /* Whether terminal supports color? */
 458                 wattrset(win, dlg.shadow.atr);
 459                 wmove(win, y + height, x + 2);
 460                 for (i = 0; i < width; i++)
 461                         waddch(win, winch(win) & A_CHARTEXT);
 462                 for (i = y + 1; i < y + height + 1; i++) {
 463                         wmove(win, i, x + width);
 464                         waddch(win, winch(win) & A_CHARTEXT);
 465                         waddch(win, winch(win) & A_CHARTEXT);
 466                 }
 467                 wnoutrefresh(win);
 468         }
 469 }
 470
 471 /*
 472  *  Return the position of the first alphabetic character in a string.
 473  */
 474 int first_alpha(const char *string, const char *exempt)
 475 {
 476         int i, in_paren = 0, c;
 477
 478         for (i = 0; i < strlen(string); i++) {
 479                 c = tolower(string[i]);
 480
 481                 if (strchr("<[(", c))
 482                         ++in_paren;
 483                 if (strchr(">])", c) && in_paren > 0)
 484                         --in_paren;
 485
 486                 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
 487                         return i;
 488         }
 489
 490         return 0;
 491 }
 492
 493 /*
 494  * ncurses uses ESC to detect escaped char sequences. This resutl in
 495  * a small timeout before ESC is actually delivered to the application.
 496  * lxdialog suggest <ESC> <ESC> which is correctly translated to two
 497  * times esc. But then we need to ignore the second esc to avoid stepping
 498  * out one menu too much. Filter away all escaped key sequences since
 499  * keypad(FALSE) turn off ncurses support for escape sequences - and thats
 500  * needed to make notimeout() do as expected.
 501  */
 502 int on_key_esc(WINDOW *win)
 503 {
 504         int key;
 505         int key2;
 506         int key3;
 507
 508         nodelay(win, TRUE);
 509         keypad(win, FALSE);
 510         key = wgetch(win);
 511         key2 = wgetch(win);
 512         do {
 513                 key3 = wgetch(win);
 514         } while (key3 != ERR);
 515         nodelay(win, FALSE);
 516         keypad(win, TRUE);
 517         if (key == KEY_ESC && key2 == ERR)
 518                 return KEY_ESC;
 519         else if (key != ERR && key != KEY_ESC && key2 == ERR)
 520                 ungetch(key);
 521
 522         return -1;
 523 }
 524
 525 /* redraw screen in new size */
 526 int on_key_resize(void)
 527 {
 528         dialog_clear();
 529         return KEY_RESIZE;
 530 }
 531
 532 struct dialog_list *item_cur;
 533 struct dialog_list item_nil;
 534 struct dialog_list *item_head;
 535
 536 void item_reset(void)
 537 {
 538         struct dialog_list *p, *next;
 539
 540         for (p = item_head; p; p = next) {
 541                 next = p->next;
 542                 free(p);
 543         }
 544         item_head = NULL;
 545         item_cur = &item_nil;
 546 }
 547
 548 void item_make(const char *fmt, ...)
 549 {
 550         va_list ap;
 551         struct dialog_list *p = malloc(sizeof(*p));
 552
 553         if (item_head)
 554                 item_cur->next = p;
 555         else
 556                 item_head = p;
 557         item_cur = p;
 558         memset(p, 0, sizeof(*p));
 559
 560         va_start(ap, fmt);
 561         vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
 562         va_end(ap);
 563 }
 564
 565 void item_add_str(const char *fmt, ...)
 566 {
 567         va_list ap;
 568         size_t avail;
 569
 570         avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
 571
 572         va_start(ap, fmt);
 573         vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
 574                   avail, fmt, ap);
 575         item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
 576         va_end(ap);
 577 }
 578
 579 void item_set_tag(char tag)
 580 {
 581         item_cur->node.tag = tag;
 582 }
 583 void item_set_data(void *ptr)
 584 {
 585         item_cur->node.data = ptr;
 586 }
 587
 588 void item_set_selected(int val)
 589 {
 590         item_cur->node.selected = val;
 591 }
 592
 593 int item_activate_selected(void)
 594 {
 595         item_foreach()
 596                 if (item_is_selected())
 597                         return 1;
 598         return 0;
 599 }
 600
 601 void *item_data(void)
 602 {
 603         return item_cur->node.data;
 604 }
 605
 606 char item_tag(void)
 607 {
 608         return item_cur->node.tag;
 609 }
 610
 611 int item_count(void)
 612 {
 613         int n = 0;
 614         struct dialog_list *p;
 615
 616         for (p = item_head; p; p = p->next)
 617                 n++;
 618         return n;
 619 }
 620
 621 void item_set(int n)
 622 {
 623         int i = 0;
 624         item_foreach()
 625                 if (i++ == n)
 626                         return;
 627 }
 628
 629 int item_n(void)
 630 {
 631         int n = 0;
 632         struct dialog_list *p;
 633
 634         for (p = item_head; p; p = p->next) {
 635                 if (p == item_cur)
 636                         return n;
 637                 n++;
 638         }
 639         return 0;
 640 }
 641
 642 const char *item_str(void)
 643 {
 644         return item_cur->node.str;
 645 }
 646
 647 int item_is_selected(void)
 648 {
 649         return (item_cur->node.selected != 0);
 650 }
 651
 652 int item_is_tag(char tag)
 653 {
 654         return (item_cur->node.tag == tag);
 655 }