misc/confdialog/checklist.c

   1 /*
   2  * --- T2-COPYRIGHT-NOTE-BEGIN ---
   3  * This copyright note is auto-generated by ./scripts/Create-CopyPatch.
   4  *
   5  * T2 SDE: misc/confdialog/checklist.c
   6  * Copyright (C) 2004 - 2005 The T2 SDE Project
   7  * Copyright (C) 1998 - 2003 ROCK Linux Project
   8  *
   9  * More information can be found in the files COPYING and README.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; version 2 of the License. A copy of the
  14  * GNU General Public License can be found in the file COPYING.
  15  * --- T2-COPYRIGHT-NOTE-END ---
  16  */
  17 /*
  18  *  checklist.c -- implements the checklist box
  19  *
  20  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
  21  *     Stuart Herbert - S.Herbert@sheffield.ac.uk: radiolist extension
  22  *     Alessandro Rubini - rubini@ipvvis.unipv.it: merged the two
  23  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
  24  *  MODIFIED FOR ROCK LINUX CONFIG BY: Clifford Wolf (clifford@clifford.at)
  25  *
  26  *  This program is free software; you can redistribute it and/or
  27  *  modify it under the terms of the GNU General Public License
  28  *  as published by the Free Software Foundation; either version 2
  29  *  of the License, or (at your option) any later version.
  30  *
  31  *  This program is distributed in the hope that it will be useful,
  32  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  33  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  34  *  GNU General Public License for more details.
  35  *
  36  *  You should have received a copy of the GNU General Public License
  37  *  along with this program; if not, write to the Free Software
  38  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  39  */
  40
  41 #include "dialog.h"
  42
  43 static int list_width, check_x, item_x, checkflag;
  44
  45 /*
  46  * Print list item
  47  */
  48 static void
  49 print_item (WINDOW * win, const char *item, int status,
  50             int choice, int selected)
  51 {
  52     int i;
  53
  54     /* Clear 'residue' of last item */
  55     wattrset (win, menubox_attr);
  56     wmove (win, choice, 0);
  57     for (i = 0; i < list_width; i++)
  58         waddch (win, ' ');
  59
  60     wmove (win, choice, check_x);
  61     wattrset (win, selected ? check_selected_attr : check_attr);
  62     if (checkflag == FLAG_CHECK)
  63         wprintw (win, "[%c]", status ? 'X' : ' ');
  64     else
  65         wprintw (win, "(%c)", status ? 'X' : ' ');
  66
  67     wattrset (win, selected ? tag_selected_attr : tag_attr);
  68     mvwaddch(win, choice, item_x, item[0]);
  69     wattrset (win, selected ? item_selected_attr : item_attr);
  70     waddstr (win, (char *)item+1);
  71     if (selected) {
  72         wmove (win, choice, check_x+1);
  73         wrefresh (win);
  74     }
  75 }
  76
  77 /*
  78  * Print the scroll indicators.
  79  */
  80 static void
  81 print_arrows (WINDOW * win, int choice, int item_no, int scroll,
  82                 int y, int x, int height)
  83 {
  84     wmove(win, y, x);
  85
  86     if (scroll > 0) {
  87         wattrset (win, uarrow_attr);
  88         waddch (win, ACS_UARROW);
  89         waddstr (win, "(-)");
  90     }
  91     else {
  92         wattrset (win, menubox_attr);
  93         waddch (win, ACS_HLINE);
  94         waddch (win, ACS_HLINE);
  95         waddch (win, ACS_HLINE);
  96         waddch (win, ACS_HLINE);
  97     }
  98
  99    y = y + height + 1;
 100    wmove(win, y, x);
 101
 102    if ((height < item_no) && (scroll + choice < item_no - 1)) {
 103         wattrset (win, darrow_attr);
 104         waddch (win, ACS_DARROW);
 105         waddstr (win, "(+)");
 106     }
 107     else {
 108         wattrset (win, menubox_border_attr);
 109         waddch (win, ACS_HLINE);
 110         waddch (win, ACS_HLINE);
 111         waddch (win, ACS_HLINE);
 112         waddch (win, ACS_HLINE);
 113    }
 114 }
 115
 116 /*
 117  *  Display the termination buttons
 118  */
 119 static void
 120 print_buttons( WINDOW *dialog, int height, int width, int selected)
 121 {
 122     int x = width / 2 - 5;
 123     int y = height - 2;
 124
 125     print_button (dialog, "Select", y, x, 1);
 126
 127     wmove(dialog, y, x+1);
 128     wrefresh (dialog);
 129 }
 130
 131 /*
 132  * Display a dialog box with a list of options that can be turned on or off
 133  * The `flag' parameter is used to select between radiolist and checklist.
 134  */
 135 int
 136 dialog_checklist (const char *title, const char *prompt, int height, int width,
 137         int list_height, int item_no, const char * const * items, int flag)
 138
 139 {
 140     int i, x, y, box_x, box_y;
 141     int key = 0, button = 0, choice = 0, scroll = 0, max_choice, *status;
 142     WINDOW *dialog, *list;
 143
 144     checkflag = flag;
 145
 146     /* Allocate space for storing item on/off status */
 147     if ((status = malloc (sizeof (int) * item_no)) == NULL) {
 148         endwin ();
 149         fprintf (stderr,
 150                  "\nCan't allocate memory in dialog_checklist().\n");
 151         exit (-1);
 152     }
 153
 154     /* Initializes status */
 155     for (i = 0; i < item_no; i++) {
 156         status[i] = !strcasecmp (items[i * 3 + 2], "on");
 157         if (!choice && status[i])
 158             choice = i;
 159     }
 160
 161     max_choice = MIN (list_height, item_no);
 162
 163     /* center dialog box on screen */
 164     x = (COLS - width) / 2;
 165     y = (LINES - height) / 2;
 166
 167     draw_shadow (stdscr, y, x, height, width);
 168
 169     dialog = newwin (height, width, y, x);
 170     keypad (dialog, TRUE);
 171
 172     draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
 173     wattrset (dialog, border_attr);
 174     mvwaddch (dialog, height-3, 0, ACS_LTEE);
 175     for (i = 0; i < width - 2; i++)
 176         waddch (dialog, ACS_HLINE);
 177     wattrset (dialog, dialog_attr);
 178     waddch (dialog, ACS_RTEE);
 179
 180     if (title != NULL && strlen(title) >= width-2 ) {
 181         /* truncate long title -- mec */
 182         char * title2 = malloc(width-2+1);
 183         memcpy( title2, title, width-2 );
 184         title2[width-2] = '\0';
 185         title = title2;
 186     }
 187
 188     if (title != NULL) {
 189         wattrset (dialog, title_attr);
 190         mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');
 191         waddstr (dialog, (char *)title);
 192         waddch (dialog, ' ');
 193     }
 194
 195     wattrset (dialog, dialog_attr);
 196     print_autowrap (dialog, prompt, width - 2, 1, 3);
 197
 198     list_width = width - 6;
 199     box_y = height - list_height - 5;
 200     box_x = (width - list_width) / 2 - 1;
 201
 202     /* create new window for the list */
 203     list = subwin (dialog, list_height, list_width, y+box_y+1, x+box_x+1);
 204
 205     keypad (list, TRUE);
 206
 207     /* draw a box around the list items */
 208     draw_box (dialog, box_y, box_x, list_height + 2, list_width + 2,
 209               menubox_border_attr, menubox_attr);
 210
 211     /* Find length of longest item in order to center checklist */
 212     check_x = 0;
 213     for (i = 0; i < item_no; i++)
 214         check_x = MAX (check_x, + strlen (items[i * 3 + 1]) + 4);
 215
 216     check_x = (list_width - check_x) / 2;
 217     item_x = check_x + 4;
 218
 219     if (choice >= list_height) {
 220         scroll = choice - list_height + 1;
 221         choice -= scroll;
 222     }
 223
 224     /* Print the list */
 225     for (i = 0; i < max_choice; i++) {
 226         print_item (list, items[(scroll+i) * 3 + 1],
 227                     status[i+scroll], i, i == choice);
 228     }
 229
 230     print_arrows(dialog, choice, item_no, scroll,
 231                         box_y, box_x + check_x + 5, list_height);
 232
 233     print_buttons(dialog, height, width, 0);
 234
 235     wnoutrefresh (list);
 236     wnoutrefresh (dialog);
 237     doupdate ();
 238
 239     while (key != ESC) {
 240         key = wgetch (dialog);
 241
 242         for (i = 0; i < max_choice; i++)
 243             if (toupper(key) == toupper(items[(scroll+i)*3+1][0]))
 244                 break;
 245
 246
 247         if ( i < max_choice || key == KEY_UP || key == KEY_DOWN ||
 248             key == '+' || key == '-' ) {
 249             if (key == KEY_UP || key == '-') {
 250                 if (!choice) {
 251                     if (!scroll)
 252                         continue;
 253                     /* Scroll list down */
 254                     if (list_height > 1) {
 255                         /* De-highlight current first item */
 256                         print_item (list, items[scroll * 3 + 1],
 257                                         status[scroll], 0, FALSE);
 258                         scrollok (list, TRUE);
 259                         wscrl (list, -1);
 260                         scrollok (list, FALSE);
 261                     }
 262                     scroll--;
 263                     print_item (list, items[scroll * 3 + 1],
 264                                 status[scroll], 0, TRUE);
 265                     wnoutrefresh (list);
 266
 267                     print_arrows(dialog, choice, item_no, scroll,
 268                                 box_y, box_x + check_x + 5, list_height);
 269
 270                     wrefresh (dialog);
 271
 272                     continue;   /* wait for another key press */
 273                 } else
 274                     i = choice - 1;
 275             } else if (key == KEY_DOWN || key == '+') {
 276                 if (choice == max_choice - 1) {
 277                     if (scroll + choice >= item_no - 1)
 278                         continue;
 279                     /* Scroll list up */
 280                     if (list_height > 1) {
 281                         /* De-highlight current last item before scrolling up */
 282                         print_item (list, items[(scroll + max_choice - 1) * 3 + 1],
 283                                     status[scroll + max_choice - 1],
 284                                     max_choice - 1, FALSE);
 285                         scrollok (list, TRUE);
 286                         scroll (list);
 287                         scrollok (list, FALSE);
 288                     }
 289                     scroll++;
 290                     print_item (list, items[(scroll + max_choice - 1) * 3 + 1],
 291                                 status[scroll + max_choice - 1],
 292                                 max_choice - 1, TRUE);
 293                     wnoutrefresh (list);
 294
 295                     print_arrows(dialog, choice, item_no, scroll,
 296                                 box_y, box_x + check_x + 5, list_height);
 297
 298                     wrefresh (dialog);
 299
 300                     continue;   /* wait for another key press */
 301                 } else
 302                     i = choice + 1;
 303             }
 304             if (i != choice) {
 305                 /* De-highlight current item */
 306                 print_item (list, items[(scroll + choice) * 3 + 1],
 307                             status[scroll + choice], choice, FALSE);
 308                 /* Highlight new item */
 309                 choice = i;
 310                 print_item (list, items[(scroll + choice) * 3 + 1],
 311                             status[scroll + choice], choice, TRUE);
 312                 wnoutrefresh (list);
 313                 wrefresh (dialog);
 314             }
 315             continue;           /* wait for another key press */
 316         }
 317         switch (key) {
 318         case 'H':
 319         case 'h':
 320         case '?':
 321             delwin (dialog);
 322             free (status);
 323             return 1;
 324         case 'S':
 325         case 's':
 326         case ' ':
 327         case '\n':
 328             if (!button) {
 329                 if (flag == FLAG_CHECK) {
 330                     status[scroll + choice] = !status[scroll + choice];
 331                     wmove (list, choice, check_x);
 332                     wattrset (list, check_selected_attr);
 333                     wprintw (list, "[%c]", status[scroll + choice] ? 'X' : ' ');
 334                 } else {
 335                     if (!status[scroll + choice]) {
 336                         for (i = 0; i < item_no; i++)
 337                             status[i] = 0;
 338                         status[scroll + choice] = 1;
 339                         for (i = 0; i < max_choice; i++)
 340                             print_item (list, items[(scroll + i) * 3 + 1],
 341                                         status[scroll + i], i, i == choice);
 342                     }
 343                 }
 344                 wnoutrefresh (list);
 345                 wrefresh (dialog);
 346
 347                 for (i = 0; i < item_no; i++) {
 348                     if (status[i]) {
 349                         if (flag == FLAG_CHECK) {
 350                             fprintf (stderr, "\"%s\" ", items[i * 3]);
 351                         } else {
 352                             fprintf (stderr, "%s", items[i * 3]);
 353                         }
 354
 355                     }
 356                 }
 357             }
 358             delwin (dialog);
 359             free (status);
 360             return button;
 361         case 'X':
 362         case 'x':
 363             key = ESC;
 364         case ESC:
 365             break;
 366         }
 367
 368         /* Now, update everything... */
 369         doupdate ();
 370     }
 371
 372
 373     delwin (dialog);
 374     free (status);
 375     return -1;                  /* ESC pressed */
 376 }