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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;

do_resize:

        if (getmaxy(stdscr) < (height + 4))

                return -ERRDISPLAYTOOSMALL;

        if (getmaxx(stdscr) < (width + 4))

                return -ERRDISPLAYTOOSMALL;

        /* 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,

                 dlg.dialog.atr, dlg.border.atr);

        wattrset(dialog, dlg.border.atr);

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

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

                waddch(dialog, ACS_HLINE);

        wattrset(dialog, dlg.dialog.atr);

        waddch(dialog, ACS_RTEE);

        print_title(dialog, title, width);

        wattrset(dialog, dlg.dialog.atr);

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

        print_buttons(dialog, height, width, 0);

        while (key != 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 KEY_ESC:

                        key = on_key_esc(dialog);

                        break;

                case KEY_RESIZE:

                        delwin(dialog);

                        on_key_resize();

                        goto do_resize;

                }

        }

        delwin(dialog);

        return key;             /* ESC pressed */

}