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/*

 *  yesno.c -- implements the yes/no box

 *

 *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)

 *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)

 *

 *  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 termination buttons

 */

static void

print_buttons(WINDOW *dialog, int height, int width, int selected)

{

    int x = width / 2 - 10;

    int y = height - 2;

    print_button (dialog, " Yes ", y, x, selected == 0);

    print_button (dialog, "  No  ", y, x + 13, selected == 1);

    wmove(dialog, y, x+1 + 13*selected );

    wrefresh (dialog);

}

/*

 * Display a dialog box with two buttons - Yes and No

 */

int

dialog_yesno (const char *title, const char *prompt, int height, int width)

{

    int i, x, y, key = 0, button = 0;

    WINDOW *dialog;

    /* center dialog box on screen */

    x = (COLS - width) / 2;

    y = (LINES - height) / 2;

    draw_shadow (stdscr, y, x, height, width);

    dialog = newwin (height, width, y, x);

    keypad (dialog, TRUE);

    draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);

    wattrset (dialog, border_attr);

    mvwaddch (dialog, height-3, 0, ACS_LTEE);

    for (i = 0; i < width - 2; i++)

        waddch (dialog, ACS_HLINE);

    wattrset (dialog, dialog_attr);

    waddch (dialog, ACS_RTEE);

    if (title != NULL && strlen(title) >= width-2 ) {

        /* truncate long title -- mec */

        char * title2 = malloc(width-2+1);

        memcpy( title2, title, width-2 );

        title2[width-2] = '\0';

        title = title2;

    }

    if (title != NULL) {

        wattrset (dialog, title_attr);

        mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');

        waddstr (dialog, (char *)title);

        waddch (dialog, ' ');

    }

    wattrset (dialog, dialog_attr);

    print_autowrap (dialog, prompt, width - 2, 1, 3);

    print_buttons(dialog, height, width, 0);

    while (key != ESC) {

        key = wgetch (dialog);

        switch (key) {

        case 'Y':

        case 'y':

            delwin (dialog);

            return 0;

        case 'N':

        case 'n':

            delwin (dialog);

            return 1;

        case TAB:

        case KEY_LEFT:

        case KEY_RIGHT:

            button = ((key == KEY_LEFT ? --button : ++button) < 0)

                        ? 1 : (button > 1 ? 0 : button);

            print_buttons(dialog, height, width, button);

            wrefresh (dialog);

            break;

        case ' ':

        case '\n':

            delwin (dialog);

            return button;

        case ESC:

            break;

        }

    }

    delwin (dialog);

    return -1;                  /* ESC pressed */

}