misc/confdialog/yesno.c

   1 /*
   2  * --- T2-COPYRIGHT-NOTE-BEGIN ---
   3  * This copyright note is auto-generated by ./scripts/Create-CopyPatch.
   4  *
   5  * T2 SDE: misc/confdialog/yesno.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  *  yesno.c -- implements the yes/no box
  19  *
  20  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
  21  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
  22  *  MODIFIED FOR ROCK LINUX CONFIG BY: Clifford Wolf (clifford@clifford.at)
  23  *
  24  *  This program is free software; you can redistribute it and/or
  25  *  modify it under the terms of the GNU General Public License
  26  *  as published by the Free Software Foundation; either version 2
  27  *  of the License, or (at your option) any later version.
  28  *
  29  *  This program is distributed in the hope that it will be useful,
  30  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  31  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  32  *  GNU General Public License for more details.
  33  *
  34  *  You should have received a copy of the GNU General Public License
  35  *  along with this program; if not, write to the Free Software
  36  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  37  */
  38
  39 #include "dialog.h"
  40
  41 /*
  42  * Display termination buttons
  43  */
  44 static void
  45 print_buttons(WINDOW *dialog, int height, int width, int selected)
  46 {
  47     int x = width / 2 - 10;
  48     int y = height - 2;
  49
  50     print_button (dialog, " Yes ", y, x, selected == 0);
  51     print_button (dialog, "  No  ", y, x + 13, selected == 1);
  52
  53     wmove(dialog, y, x+1 + 13*selected );
  54     wrefresh (dialog);
  55 }
  56
  57 /*
  58  * Display a dialog box with two buttons - Yes and No
  59  */
  60 int
  61 dialog_yesno (const char *title, const char *prompt, int height, int width)
  62 {
  63     int i, x, y, key = 0, button = 0;
  64     WINDOW *dialog;
  65
  66     /* center dialog box on screen */
  67     x = (COLS - width) / 2;
  68     y = (LINES - height) / 2;
  69
  70     draw_shadow (stdscr, y, x, height, width);
  71
  72     dialog = newwin (height, width, y, x);
  73     keypad (dialog, TRUE);
  74
  75     draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
  76     wattrset (dialog, border_attr);
  77     mvwaddch (dialog, height-3, 0, ACS_LTEE);
  78     for (i = 0; i < width - 2; i++)
  79         waddch (dialog, ACS_HLINE);
  80     wattrset (dialog, dialog_attr);
  81     waddch (dialog, ACS_RTEE);
  82
  83     if (title != NULL && strlen(title) >= width-2 ) {
  84         /* truncate long title -- mec */
  85         char * title2 = malloc(width-2+1);
  86         memcpy( title2, title, width-2 );
  87         title2[width-2] = '\0';
  88         title = title2;
  89     }
  90
  91     if (title != NULL) {
  92         wattrset (dialog, title_attr);
  93         mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');
  94         waddstr (dialog, (char *)title);
  95         waddch (dialog, ' ');
  96     }
  97
  98     wattrset (dialog, dialog_attr);
  99     print_autowrap (dialog, prompt, width - 2, 1, 3);
 100
 101     print_buttons(dialog, height, width, 0);
 102
 103     while (key != ESC) {
 104         key = wgetch (dialog);
 105         switch (key) {
 106         case 'Y':
 107         case 'y':
 108             delwin (dialog);
 109             return 0;
 110         case 'N':
 111         case 'n':
 112             delwin (dialog);
 113             return 1;
 114
 115         case TAB:
 116         case KEY_LEFT:
 117         case KEY_RIGHT:
 118             button = ((key == KEY_LEFT ? --button : ++button) < 0)
 119                         ? 1 : (button > 1 ? 0 : button);
 120
 121             print_buttons(dialog, height, width, button);
 122             wrefresh (dialog);
 123             break;
 124         case ' ':
 125         case '\n':
 126             delwin (dialog);
 127             return button;
 128         case ESC:
 129             break;
 130         }
 131     }
 132
 133     delwin (dialog);
 134     return -1;                  /* ESC pressed */
 135 }