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kconfig/lxdialog/yesno.c
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Mon Mar 28 01:05:18 2011 +0200 (2011-03-28)
changeset 2362 0888065f8c4d
parent 1 eeea35fbf182
permissions -rw-r--r--
cc/gcc: cleanup the _or_later logic

So far, we've had a version always select appropriate _or_later option,
which in turn would select all previous _or_later options.

Because the dependencies on companion libs were cumulative, that was
working OK. But the upcoming 4.6 will no longer depend on libelf, so
we can't keep the cumulative scheme we've been using so far.

Have each release family select the corresponding dependencies, instead
of relying on selecting previous _or_later.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 /*

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

     3  *

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

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

     6  *

     7  *  This program is free software; you can redistribute it and/or

     8  *  modify it under the terms of the GNU General Public License

     9  *  as published by the Free Software Foundation; either version 2

    10  *  of the License, or (at your option) any later version.

    11  *

    12  *  This program is distributed in the hope that it will be useful,

    13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of

    14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    15  *  GNU General Public License for more details.

    16  *

    17  *  You should have received a copy of the GNU General Public License

    18  *  along with this program; if not, write to the Free Software

    19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    20  */

    21 

    22 #include "dialog.h"

    23 

    24 /*

    25  * Display termination buttons

    26  */

    27 static void print_buttons(WINDOW * dialog, int height, int width, int selected)

    28 {

    29 	int x = width / 2 - 10;

    30 	int y = height - 2;

    31 

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

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

    34 

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

    36 	wrefresh(dialog);

    37 }

    38 

    39 /*

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

    41  */

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

    43 {

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

    45 	WINDOW *dialog;

    46 

    47 do_resize:

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

    49 		return -ERRDISPLAYTOOSMALL;

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

    51 		return -ERRDISPLAYTOOSMALL;

    52 

    53 	/* center dialog box on screen */

    54 	x = (COLS - width) / 2;

    55 	y = (LINES - height) / 2;

    56 

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

    58 

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

    60 	keypad(dialog, TRUE);

    61 

    62 	draw_box(dialog, 0, 0, height, width,

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

    64 	wattrset(dialog, dlg.border.atr);

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

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

    67 		waddch(dialog, ACS_HLINE);

    68 	wattrset(dialog, dlg.dialog.atr);

    69 	waddch(dialog, ACS_RTEE);

    70 

    71 	print_title(dialog, title, width);

    72 

    73 	wattrset(dialog, dlg.dialog.atr);

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

    75 

    76 	print_buttons(dialog, height, width, 0);

    77 

    78 	while (key != KEY_ESC) {

    79 		key = wgetch(dialog);

    80 		switch (key) {

    81 		case 'Y':

    82 		case 'y':

    83 			delwin(dialog);

    84 			return 0;

    85 		case 'N':

    86 		case 'n':

    87 			delwin(dialog);

    88 			return 1;

    89 

    90 		case TAB:

    91 		case KEY_LEFT:

    92 		case KEY_RIGHT:

    93 			button = ((key == KEY_LEFT ? --button : ++button) < 0) ? 1 : (button > 1 ? 0 : button);

    94 

    95 			print_buttons(dialog, height, width, button);

    96 			wrefresh(dialog);

    97 			break;

    98 		case ' ':

    99 		case '\n':

   100 			delwin(dialog);

   101 			return button;

   102 		case KEY_ESC:

   103 			key = on_key_esc(dialog);

   104 			break;

   105 		case KEY_RESIZE:

   106 			delwin(dialog);

   107 			on_key_resize();

   108 			goto do_resize;

   109 		}

   110 	}

   111 

   112 	delwin(dialog);

   113 	return key;		/* ESC pressed */

   114 }
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