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Diffstat (limited to 'gnu/lib/libodialog/yesno.c')
| -rw-r--r-- | gnu/lib/libodialog/yesno.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/gnu/lib/libodialog/yesno.c b/gnu/lib/libodialog/yesno.c new file mode 100644 index 0000000..24eb41a --- /dev/null +++ b/gnu/lib/libodialog/yesno.c @@ -0,0 +1,169 @@ +/* + * yesno.c -- implements the yes/no box + * + * AUTHOR: Savio Lam (lam836@cs.cuhk.hk) + * + * 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <dialog.h> +#include "dialog.priv.h" + +/* Actual work function */ +static int dialog_yesno_proc(unsigned char *title, unsigned char *prompt, + int height, int width, int yesdefault); + +/* + * Display a dialog box with two buttons - Yes and No + */ +int +dialog_yesno(unsigned char *title, unsigned char *prompt, int height, int width) +{ + return dialog_yesno_proc(title, prompt, height, width, TRUE); +} + +/* + * Display a dialog box with two buttons - No and Yes + */ +int +dialog_noyes(unsigned char *title, unsigned char *prompt, int height, int width) +{ + return dialog_yesno_proc(title, prompt, height, width, FALSE); +} + +static int +dialog_yesno_proc(unsigned char *title, unsigned char *prompt, int height, int width, int yesdefault) +{ + int i, j, x, y, key, button; + WINDOW *dialog; + char *tmphlp; + + /* disable helpline */ + tmphlp = get_helpline(); + use_helpline(NULL); + + if (height < 0) + height = strheight(prompt)+4; + if (width < 0) { + i = strwidth(prompt); + j = ((title != NULL) ? strwidth(title) : 0); + width = MAX(i,j)+4; + } + width = MAX(width,23); + + if (width > COLS) + width = COLS; + if (height > LINES) + height = LINES; + /* center dialog box on screen */ + x = DialogX ? DialogX : (COLS - width)/2; + y = DialogY ? DialogY : (LINES - height)/2; + +#ifdef HAVE_NCURSES + if (use_shadow) + draw_shadow(stdscr, y, x, height, width); +#endif + dialog = newwin(height, width, y, x); + if (dialog == NULL) { + endwin(); + fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x); + exit(1); + } + keypad(dialog, TRUE); + + draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr); + wattrset(dialog, border_attr); + wmove(dialog, height-3, 0); + waddch(dialog, ACS_LTEE); + for (i = 0; i < width-2; i++) + waddch(dialog, ACS_HLINE); + wattrset(dialog, dialog_attr); + waddch(dialog, ACS_RTEE); + wmove(dialog, height-2, 1); + for (i = 0; i < width-2; i++) + waddch(dialog, ' '); + + if (title != NULL) { + wattrset(dialog, title_attr); + wmove(dialog, 0, (width - strlen(title))/2 - 1); + waddch(dialog, ' '); + waddstr(dialog, title); + waddch(dialog, ' '); + } + wattrset(dialog, dialog_attr); + wmove(dialog, 1, 2); + print_autowrap(dialog, prompt, height-1, width-2, width, 1, 2, TRUE, FALSE); + + display_helpline(dialog, height-1, width); + + x = width/2-10; + y = height-2; + + /* preset button 0 or 1 for YES or NO as the default */ + key = 0; + button = !yesdefault; + while (key != ESC) { + print_button(dialog, " No ", y, x+13, button); + print_button(dialog, " Yes " , y, x, !button); + if (button) + wmove(dialog, y, x+16); + else + wmove(dialog, y, x+2); + wrefresh(dialog); + + key = wgetch(dialog); + switch (key) { + case 'Y': + case 'y': + delwin(dialog); + restore_helpline(tmphlp); + return 0; + case 'N': + case 'n': + delwin(dialog); + restore_helpline(tmphlp); + return 1; + case KEY_BTAB: + case TAB: + case KEY_UP: + case KEY_DOWN: + case KEY_LEFT: + case KEY_RIGHT: + button = !button; + /* redrawn at the loop's entry */ + break; + case ' ': + case '\r': + case '\n': + delwin(dialog); + restore_helpline(tmphlp); + return button; + case ESC: + break; + case KEY_F(1): + case '?': + display_helpfile(); + break; + } + } + + delwin(dialog); + restore_helpline(tmphlp); + return -1; /* ESC pressed */ +} +/* End of dialog_yesno() */ |
