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yesno.c

/*
 *  $Id: yesno.c,v 1.1 2004/02/15 13:21:43 Tux Exp $
 *
 *  yesno.c -- implements the yes/no box
 *
 *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
 *  and     Thomas Dickey
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "dialog.h"

/*
 * Display a dialog box with two buttons - Yes and No
 */
int
dialog_yesno(const char *title, const char *cprompt, int height, int width, int dft_no)
{
    int x, y;
    int key = 0, key2, fkey;
    int button = dft_no;
    WINDOW *dialog = 0;
    int result = DLG_EXIT_UNKNOWN;
    char *prompt = strclone(cprompt);
    const char **buttons = dlg_yes_labels();

#ifdef KEY_RESIZE
    int req_high = height;
    int req_wide = width;
  restart:
#endif

    tab_correct_str(prompt);
    auto_size(title, prompt, &height, &width, 2, 25);
    print_size(height, width);
    ctl_size(height, width);

    x = box_x_ordinate(width);
    y = box_y_ordinate(height);

#ifdef KEY_RESIZE
    if (dialog != 0) {
      (void) wresize(dialog, height, width);
      (void) mvwin(dialog, y, x);
      (void) refresh();
    } else
#endif
      dialog = new_window(height, width, y, x);

    draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
    draw_bottom_box(dialog);
    draw_title(dialog, title);

    wattrset(dialog, dialog_attr);
    print_autowrap(dialog, prompt, height, width);

    dlg_draw_buttons(dialog, height - 2, 0, buttons, dft_no, FALSE, width);

#ifndef KEY_RESIZE
    wtimeout(dialog, WTIMEOUT_VAL);
#endif

    while (result == DLG_EXIT_UNKNOWN) {
      key = mouse_wgetch(dialog, &fkey);
      if ((key2 = dlg_char_to_button(key, buttons)) >= 0) {
          result = key2;
          continue;
      }
      /* handle non-functionkeys */
      if (!fkey) {
          switch (key) {
          case ESC:
            result = DLG_EXIT_ESC;
            break;
          case TAB:
            key = KEY_RIGHT;
            fkey = TRUE;
            break;
          case ' ':
          case '\n':
          case '\r':
            key = KEY_ENTER;
            fkey = TRUE;
            break;
          }
      }
      /* handle functionkeys */
      if (fkey) {
          switch (key) {
          case KEY_BTAB:
          case KEY_UP:
          case KEY_DOWN:
          case KEY_LEFT:
          case KEY_RIGHT:
            button = !button;
            dlg_draw_buttons(dialog,
                         height - 2, 0,
                         buttons, button,
                         FALSE, width);
            break;
          case M_EVENT + 0:
          case M_EVENT + 1:
            button = (key == (M_EVENT + 1));
            /* FALLTHRU */
          case KEY_ENTER:
            result = button ? DLG_EXIT_CANCEL : DLG_EXIT_OK;
            break;
#ifdef KEY_RESIZE
          case KEY_RESIZE:
            dialog_clear();
            height = req_high;
            width = req_wide;
            goto restart;
#endif
          }
      }
    }

    del_window(dialog);
    mouse_free_regions();
    free(prompt);
    return result;
}

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