yesno.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:3k
- /*
- * 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] = ' ';
- 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 */
- }