crosstool-ng: kconfig/lxdialog/inputbox.c@c4d124ed9f8e (annotated)

yann@1	1	/*
yann@1	2	* inputbox.c -- implements the input box
yann@1	3	*
yann@1	4	* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
yann@1	5	* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
yann@1	6	*
yann@1	7	* This program is free software; you can redistribute it and/or
yann@1	8	* modify it under the terms of the GNU General Public License
yann@1	9	* as published by the Free Software Foundation; either version 2
yann@1	10	* of the License, or (at your option) any later version.
yann@1	11	*
yann@1	12	* This program is distributed in the hope that it will be useful,
yann@1	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
yann@1	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
yann@1	15	* GNU General Public License for more details.
yann@1	16	*
yann@1	17	* You should have received a copy of the GNU General Public License
yann@1	18	* along with this program; if not, write to the Free Software
yann@1	19	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
yann@1	20	*/
yann@1	21
yann@1	22	#include "dialog.h"
yann@1	23
yann@1	24	char dialog_input_result[MAX_LEN + 1];
yann@1	25
yann@1	26	/*
yann@1	27	* Print the termination buttons
yann@1	28	*/
yann@1	29	static void print_buttons(WINDOW * dialog, int height, int width, int selected)
yann@1	30	{
yann@1	31	int x = width / 2 - 11;
yann@1	32	int y = height - 2;
yann@1	33
yann@943	34	print_button(dialog, gettext(" Ok "), y, x, selected == 0);
yann@943	35	print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);
yann@1	36
yann@1	37	wmove(dialog, y, x + 1 + 14 * selected);
yann@1	38	wrefresh(dialog);
yann@1	39	}
yann@1	40
yann@1	41	/*
yann@1	42	* Display a dialog box for inputing a string
yann@1	43	*/
yann@1	44	int dialog_inputbox(const char title, const char prompt, int height, int width,
yann@1	45	const char *init)
yann@1	46	{
yann@1	47	int i, x, y, box_y, box_x, box_width;
yann@1	48	int input_x = 0, scroll = 0, key = 0, button = -1;
yann@1	49	char *instr = dialog_input_result;
yann@1	50	WINDOW *dialog;
yann@1	51
yann@1	52	if (!init)
yann@1	53	instr[0] = '\0';
yann@1	54	else
yann@1	55	strcpy(instr, init);
yann@1	56
yann@1	57	do_resize:
yann@1	58	if (getmaxy(stdscr) <= (height - 2))
yann@1	59	return -ERRDISPLAYTOOSMALL;
yann@1	60	if (getmaxx(stdscr) <= (width - 2))
yann@1	61	return -ERRDISPLAYTOOSMALL;
yann@1	62
yann@1	63	/* center dialog box on screen */
yann@1	64	x = (COLS - width) / 2;
yann@1	65	y = (LINES - height) / 2;
yann@1	66
yann@1	67	draw_shadow(stdscr, y, x, height, width);
yann@1	68
yann@1	69	dialog = newwin(height, width, y, x);
yann@1	70	keypad(dialog, TRUE);
yann@1	71
yann@1	72	draw_box(dialog, 0, 0, height, width,
yann@1	73	dlg.dialog.atr, dlg.border.atr);
yann@1	74	wattrset(dialog, dlg.border.atr);
yann@1	75	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
yann@1	76	for (i = 0; i < width - 2; i++)
yann@1	77	waddch(dialog, ACS_HLINE);
yann@1	78	wattrset(dialog, dlg.dialog.atr);
yann@1	79	waddch(dialog, ACS_RTEE);
yann@1	80
yann@1	81	print_title(dialog, title, width);
yann@1	82
yann@1	83	wattrset(dialog, dlg.dialog.atr);
yann@1	84	print_autowrap(dialog, prompt, width - 2, 1, 3);
yann@1	85
yann@1	86	/* Draw the input field box */
yann@1	87	box_width = width - 6;
yann@1	88	getyx(dialog, y, x);
yann@1	89	box_y = y + 2;
yann@1	90	box_x = (width - box_width) / 2;
yann@1	91	draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
yann@943	92	dlg.dialog.atr, dlg.border.atr);
yann@1	93
yann@1	94	print_buttons(dialog, height, width, 0);
yann@1	95
yann@1	96	/* Set up the initial value */
yann@1	97	wmove(dialog, box_y, box_x);
yann@1	98	wattrset(dialog, dlg.inputbox.atr);
yann@1	99
yann@1	100	input_x = strlen(instr);
yann@1	101
yann@1	102	if (input_x >= box_width) {
yann@1	103	scroll = input_x - box_width + 1;
yann@1	104	input_x = box_width - 1;
yann@1	105	for (i = 0; i < box_width - 1; i++)
yann@1	106	waddch(dialog, instr[scroll + i]);
yann@1	107	} else {
yann@1	108	waddstr(dialog, instr);
yann@1	109	}
yann@1	110
yann@1	111	wmove(dialog, box_y, box_x + input_x);
yann@1	112
yann@1	113	wrefresh(dialog);
yann@1	114
yann@1	115	while (key != KEY_ESC) {
yann@1	116	key = wgetch(dialog);
yann@1	117
yann@1	118	if (button == -1) { /* Input box selected */
yann@1	119	switch (key) {
yann@1	120	case TAB:
yann@1	121	case KEY_UP:
yann@1	122	case KEY_DOWN:
yann@1	123	break;
yann@1	124	case KEY_LEFT:
yann@1	125	continue;
yann@1	126	case KEY_RIGHT:
yann@1	127	continue;
yann@1	128	case KEY_BACKSPACE:
yann@1	129	case 127:
yann@1	130	if (input_x \|\| scroll) {
yann@1	131	wattrset(dialog, dlg.inputbox.atr);
yann@1	132	if (!input_x) {
yann@1	133	scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);
yann@1	134	wmove(dialog, box_y, box_x);
yann@1	135	for (i = 0; i < box_width; i++)
yann@1	136	waddch(dialog,
yann@1	137	instr[scroll + input_x + i] ?
yann@1	138	instr[scroll + input_x + i] : ' ');
yann@1	139	input_x = strlen(instr) - scroll;
yann@1	140	} else
yann@1	141	input_x--;
yann@1	142	instr[scroll + input_x] = '\0';
yann@1	143	mvwaddch(dialog, box_y, input_x + box_x, ' ');
yann@1	144	wmove(dialog, box_y, input_x + box_x);
yann@1	145	wrefresh(dialog);
yann@1	146	}
yann@1	147	continue;
yann@1	148	default:
yann@1	149	if (key < 0x100 && isprint(key)) {
yann@1	150	if (scroll + input_x < MAX_LEN) {
yann@1	151	wattrset(dialog, dlg.inputbox.atr);
yann@1	152	instr[scroll + input_x] = key;
yann@1	153	instr[scroll + input_x + 1] = '\0';
yann@1	154	if (input_x == box_width - 1) {
yann@1	155	scroll++;
yann@1	156	wmove(dialog, box_y, box_x);
yann@1	157	for (i = 0; i < box_width - 1; i++)
yann@1	158	waddch(dialog, instr [scroll + i]);
yann@1	159	} else {
yann@1	160	wmove(dialog, box_y, input_x++ + box_x);
yann@1	161	waddch(dialog, key);
yann@1	162	}
yann@1	163	wrefresh(dialog);
yann@1	164	} else
yann@1	165	flash(); /* Alarm user about overflow */
yann@1	166	continue;
yann@1	167	}
yann@1	168	}
yann@1	169	}
yann@1	170	switch (key) {
yann@1	171	case 'O':
yann@1	172	case 'o':
yann@1	173	delwin(dialog);
yann@1	174	return 0;
yann@1	175	case 'H':
yann@1	176	case 'h':
yann@1	177	delwin(dialog);
yann@1	178	return 1;
yann@1	179	case KEY_UP:
yann@1	180	case KEY_LEFT:
yann@1	181	switch (button) {
yann@1	182	case -1:
yann@1	183	button = 1; /* Indicates "Cancel" button is selected */
yann@1	184	print_buttons(dialog, height, width, 1);
yann@1	185	break;
yann@1	186	case 0:
yann@1	187	button = -1; /* Indicates input box is selected */
yann@1	188	print_buttons(dialog, height, width, 0);
yann@1	189	wmove(dialog, box_y, box_x + input_x);
yann@1	190	wrefresh(dialog);
yann@1	191	break;
yann@1	192	case 1:
yann@1	193	button = 0; /* Indicates "OK" button is selected */
yann@1	194	print_buttons(dialog, height, width, 0);
yann@1	195	break;
yann@1	196	}
yann@1	197	break;
yann@1	198	case TAB:
yann@1	199	case KEY_DOWN:
yann@1	200	case KEY_RIGHT:
yann@1	201	switch (button) {
yann@1	202	case -1:
yann@1	203	button = 0; /* Indicates "OK" button is selected */
yann@1	204	print_buttons(dialog, height, width, 0);
yann@1	205	break;
yann@1	206	case 0:
yann@1	207	button = 1; /* Indicates "Cancel" button is selected */
yann@1	208	print_buttons(dialog, height, width, 1);
yann@1	209	break;
yann@1	210	case 1:
yann@1	211	button = -1; /* Indicates input box is selected */
yann@1	212	print_buttons(dialog, height, width, 0);
yann@1	213	wmove(dialog, box_y, box_x + input_x);
yann@1	214	wrefresh(dialog);
yann@1	215	break;
yann@1	216	}
yann@1	217	break;
yann@1	218	case ' ':
yann@1	219	case '\n':
yann@1	220	delwin(dialog);
yann@1	221	return (button == -1 ? 0 : button);
yann@1	222	case 'X':
yann@1	223	case 'x':
yann@1	224	key = KEY_ESC;
yann@1	225	break;
yann@1	226	case KEY_ESC:
yann@1	227	key = on_key_esc(dialog);
yann@1	228	break;
yann@1	229	case KEY_RESIZE:
yann@1	230	delwin(dialog);
yann@1	231	on_key_resize();
yann@1	232	goto do_resize;
yann@1	233	}
yann@1	234	}
yann@1	235
yann@1	236	delwin(dialog);
yann@1	237	return KEY_ESC; /* ESC pressed */
yann@1	238	}

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Sun Apr 19 16:17:11 2009 +0000 (2009-04-19)
branch	newlib
changeset 1365	c4d124ed9f8e
parent 1	eeea35fbf182
child 2448	a103abae1560
permissions	-rw-r--r--