[deliverable/linux.git] / scripts / kconfig / lxdialog / inputbox.c

/*
 *  inputbox.c -- implements the input 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"

char dialog_input_result[MAX_LEN + 1];

/*
 *  Print the termination buttons
 */
static void print_buttons(WINDOW * dialog, int height, int width, int selected)
{
	int x = width / 2 - 11;
	int y = height - 2;

	print_button(dialog, gettext("  Ok  "), y, x, selected == 0);
	print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);

	wmove(dialog, y, x + 1 + 14 * selected);
	wrefresh(dialog);
}

/*
 * Display a dialog box for inputing a string
 */
int dialog_inputbox(const char *title, const char *prompt, int height, int width,
		    const char *init)
{
	int i, x, y, box_y, box_x, box_width;
	int input_x = 0, key = 0, button = -1;
	int show_x, len, pos;
	char *instr = dialog_input_result;
	WINDOW *dialog;

	if (!init)
		instr[0] = '\0';
	else
		strcpy(instr, init);

do_resize:
	if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN))
		return -ERRDISPLAYTOOSMALL;
	if (getmaxx(stdscr) <= (width - INPUTBOX_WIDTH_MIN))
		return -ERRDISPLAYTOOSMALL;

	/* center dialog box on screen */
	x = (getmaxx(stdscr) - width) / 2;
	y = (getmaxy(stdscr) - 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);

	/* Draw the input field box */
	box_width = width - 6;
	getyx(dialog, y, x);
	box_y = y + 2;
	box_x = (width - box_width) / 2;
	draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
		 dlg.dialog.atr, dlg.border.atr);

	print_buttons(dialog, height, width, 0);

	/* Set up the initial value */
	wmove(dialog, box_y, box_x);
	wattrset(dialog, dlg.inputbox.atr);

	len = strlen(instr);
	pos = len;

	if (len >= box_width) {
		show_x = len - box_width + 1;
		input_x = box_width - 1;
		for (i = 0; i < box_width - 1; i++)
			waddch(dialog, instr[show_x + i]);
	} else {
		show_x = 0;
		input_x = len;
		waddstr(dialog, instr);
	}

	wmove(dialog, box_y, box_x + input_x);

	wrefresh(dialog);

	while (key != KEY_ESC) {
		key = wgetch(dialog);

		if (button == -1) {	/* Input box selected */
			switch (key) {
			case TAB:
			case KEY_UP:
			case KEY_DOWN:
				break;
			case KEY_BACKSPACE:
			case 127:
				if (pos) {
					wattrset(dialog, dlg.inputbox.atr);
					if (input_x == 0) {
						show_x--;
					} else
						input_x--;

					if (pos < len) {
						for (i = pos - 1; i < len; i++) {
							instr[i] = instr[i+1];
						}
					}

					pos--;
					len--;
					instr[len] = '\0';
					wmove(dialog, box_y, box_x);
					for (i = 0; i < box_width; i++) {
						if (!instr[show_x + i]) {
							waddch(dialog, ' ');
							break;
						}
						waddch(dialog, instr[show_x + i]);
					}
					wmove(dialog, box_y, input_x + box_x);
					wrefresh(dialog);
				}
				continue;
			case KEY_LEFT:
				if (pos > 0) {
					if (input_x > 0) {
						wmove(dialog, box_y, --input_x + box_x);
					} else if (input_x == 0) {
						show_x--;
						wmove(dialog, box_y, box_x);
						for (i = 0; i < box_width; i++) {
							if (!instr[show_x + i]) {
								waddch(dialog, ' ');
								break;
							}
							waddch(dialog, instr[show_x + i]);
						}
						wmove(dialog, box_y, box_x);
					}
					pos--;
				}
				continue;
			case KEY_RIGHT:
				if (pos < len) {
					if (input_x < box_width - 1) {
						wmove(dialog, box_y, ++input_x + box_x);
					} else if (input_x == box_width - 1) {
						show_x++;
						wmove(dialog, box_y, box_x);
						for (i = 0; i < box_width; i++) {
							if (!instr[show_x + i]) {
								waddch(dialog, ' ');
								break;
							}
							waddch(dialog, instr[show_x + i]);
						}
						wmove(dialog, box_y, input_x + box_x);
					}
					pos++;
				}
				continue;
			default:
				if (key < 0x100 && isprint(key)) {
					if (len < MAX_LEN) {
						wattrset(dialog, dlg.inputbox.atr);
						if (pos < len) {
							for (i = len; i > pos; i--)
								instr[i] = instr[i-1];
							instr[pos] = key;
						} else {
							instr[len] = key;
						}
						pos++;
						len++;
						instr[len] = '\0';

						if (input_x == box_width - 1) {
							show_x++;
						} else {
							input_x++;
						}

						wmove(dialog, box_y, box_x);
						for (i = 0; i < box_width; i++) {
							if (!instr[show_x + i]) {
								waddch(dialog, ' ');
								break;
							}
							waddch(dialog, instr[show_x + i]);
						}
						wmove(dialog, box_y, input_x + box_x);
						wrefresh(dialog);
					} else
						flash();	/* Alarm user about overflow */
					continue;
				}
			}
		}
		switch (key) {
		case 'O':
		case 'o':
			delwin(dialog);
			return 0;
		case 'H':
		case 'h':
			delwin(dialog);
			return 1;
		case KEY_UP:
		case KEY_LEFT:
			switch (button) {
			case -1:
				button = 1;	/* Indicates "Help" button is selected */
				print_buttons(dialog, height, width, 1);
				break;
			case 0:
				button = -1;	/* Indicates input box is selected */
				print_buttons(dialog, height, width, 0);
				wmove(dialog, box_y, box_x + input_x);
				wrefresh(dialog);
				break;
			case 1:
				button = 0;	/* Indicates "OK" button is selected */
				print_buttons(dialog, height, width, 0);
				break;
			}
			break;
		case TAB:
		case KEY_DOWN:
		case KEY_RIGHT:
			switch (button) {
			case -1:
				button = 0;	/* Indicates "OK" button is selected */
				print_buttons(dialog, height, width, 0);
				break;
			case 0:
				button = 1;	/* Indicates "Help" button is selected */
				print_buttons(dialog, height, width, 1);
				break;
			case 1:
				button = -1;	/* Indicates input box is selected */
				print_buttons(dialog, height, width, 0);
				wmove(dialog, box_y, box_x + input_x);
				wrefresh(dialog);
				break;
			}
			break;
		case ' ':
		case '\n':
			delwin(dialog);
			return (button == -1 ? 0 : button);
		case 'X':
		case 'x':
			key = KEY_ESC;
			break;
		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;		/* ESC pressed */
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* inputbox.c -- implements the input 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
84c2a2eb	24	char dialog_input_result[MAX_LEN + 1];
1da177e4 LT	25
	26	/*
	27	* Print the termination buttons
	28	*/
b1c5f1c6	29	static void print_buttons(WINDOW * dialog, int height, int width, int selected)
1da177e4	30	{
b1c5f1c6 SR	31	int x = width / 2 - 11;
b1c5f1c6 SR	32	int y = height - 2;
1da177e4	33
75c0a8a5 EG	34	print_button(dialog, gettext(" Ok "), y, x, selected == 0);
75c0a8a5 EG	35	print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);
1da177e4	36
b1c5f1c6 SR	37	wmove(dialog, y, x + 1 + 14 * selected);
b1c5f1c6 SR	38	wrefresh(dialog);
1da177e4 LT	39	}
	40
	41	/*
	42	* Display a dialog box for inputing a string
	43	*/
dec69da8	44	int dialog_inputbox(const char title, const char prompt, int height, int width,
bb66fc67	45	const char *init)
1da177e4	46	{
b1c5f1c6	47	int i, x, y, box_y, box_x, box_width;
87727d45 WY	48	int input_x = 0, key = 0, button = -1;
87727d45 WY	49	int show_x, len, pos;
b1c5f1c6 SR	50	char *instr = dialog_input_result;
	51	WINDOW *dialog;
	52
c8dc68ad SR	53	if (!init)
	54	instr[0] = '\0';
	55	else
	56	strcpy(instr, init);
	57
	58	do_resize:
851f6657	59	if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN))
c8dc68ad	60	return -ERRDISPLAYTOOSMALL;
851f6657	61	if (getmaxx(stdscr) <= (width - INPUTBOX_WIDTH_MIN))
c8dc68ad SR	62	return -ERRDISPLAYTOOSMALL;
c8dc68ad SR	63
b1c5f1c6	64	/* center dialog box on screen */
4f2de3e1 DG	65	x = (getmaxx(stdscr) - width) / 2;
4f2de3e1 DG	66	y = (getmaxy(stdscr) - height) / 2;
b1c5f1c6 SR	67
	68	draw_shadow(stdscr, y, x, height, width);
	69
	70	dialog = newwin(height, width, y, x);
	71	keypad(dialog, TRUE);
	72
98e5a157 SR	73	draw_box(dialog, 0, 0, height, width,
	74	dlg.dialog.atr, dlg.border.atr);
	75	wattrset(dialog, dlg.border.atr);
b1c5f1c6 SR	76	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
	77	for (i = 0; i < width - 2; i++)
	78	waddch(dialog, ACS_HLINE);
98e5a157	79	wattrset(dialog, dlg.dialog.atr);
b1c5f1c6 SR	80	waddch(dialog, ACS_RTEE);
b1c5f1c6 SR	81
fa7009d5	82	print_title(dialog, title, width);
b1c5f1c6	83
98e5a157	84	wattrset(dialog, dlg.dialog.atr);
b1c5f1c6 SR	85	print_autowrap(dialog, prompt, width - 2, 1, 3);
	86
	87	/* Draw the input field box */
	88	box_width = width - 6;
	89	getyx(dialog, y, x);
	90	box_y = y + 2;
	91	box_x = (width - box_width) / 2;
98e5a157	92	draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
79d6e539	93	dlg.dialog.atr, dlg.border.atr);
b1c5f1c6 SR	94
	95	print_buttons(dialog, height, width, 0);
	96
	97	/* Set up the initial value */
	98	wmove(dialog, box_y, box_x);
98e5a157	99	wattrset(dialog, dlg.inputbox.atr);
b1c5f1c6	100
87727d45 WY	101	len = strlen(instr);
87727d45 WY	102	pos = len;
b1c5f1c6	103
87727d45 WY	104	if (len >= box_width) {
87727d45 WY	105	show_x = len - box_width + 1;
b1c5f1c6 SR	106	input_x = box_width - 1;
b1c5f1c6 SR	107	for (i = 0; i < box_width - 1; i++)
87727d45	108	waddch(dialog, instr[show_x + i]);
dec69da8	109	} else {
87727d45 WY	110	show_x = 0;
87727d45 WY	111	input_x = len;
b1c5f1c6	112	waddstr(dialog, instr);
dec69da8	113	}
b1c5f1c6 SR	114
	115	wmove(dialog, box_y, box_x + input_x);
	116
	117	wrefresh(dialog);
	118
f3cbcdc9	119	while (key != KEY_ESC) {
b1c5f1c6 SR	120	key = wgetch(dialog);
	121
	122	if (button == -1) { /* Input box selected */
	123	switch (key) {
	124	case TAB:
	125	case KEY_UP:
	126	case KEY_DOWN:
	127	break;
b1c5f1c6 SR	128	case KEY_BACKSPACE:
b1c5f1c6 SR	129	case 127:
87727d45	130	if (pos) {
98e5a157	131	wattrset(dialog, dlg.inputbox.atr);
87727d45 WY	132	if (input_x == 0) {
87727d45 WY	133	show_x--;
b1c5f1c6 SR	134	} else
b1c5f1c6 SR	135	input_x--;
87727d45 WY	136
	137	if (pos < len) {
	138	for (i = pos - 1; i < len; i++) {
	139	instr[i] = instr[i+1];
	140	}
	141	}
	142
	143	pos--;
	144	len--;
	145	instr[len] = '\0';
	146	wmove(dialog, box_y, box_x);
	147	for (i = 0; i < box_width; i++) {
	148	if (!instr[show_x + i]) {
	149	waddch(dialog, ' ');
	150	break;
	151	}
	152	waddch(dialog, instr[show_x + i]);
	153	}
b1c5f1c6 SR	154	wmove(dialog, box_y, input_x + box_x);
	155	wrefresh(dialog);
	156	}
	157	continue;
87727d45 WY	158	case KEY_LEFT:
	159	if (pos > 0) {
	160	if (input_x > 0) {
	161	wmove(dialog, box_y, --input_x + box_x);
	162	} else if (input_x == 0) {
	163	show_x--;
	164	wmove(dialog, box_y, box_x);
	165	for (i = 0; i < box_width; i++) {
	166	if (!instr[show_x + i]) {
	167	waddch(dialog, ' ');
	168	break;
	169	}
	170	waddch(dialog, instr[show_x + i]);
	171	}
	172	wmove(dialog, box_y, box_x);
	173	}
	174	pos--;
	175	}
	176	continue;
	177	case KEY_RIGHT:
	178	if (pos < len) {
	179	if (input_x < box_width - 1) {
	180	wmove(dialog, box_y, ++input_x + box_x);
	181	} else if (input_x == box_width - 1) {
	182	show_x++;
	183	wmove(dialog, box_y, box_x);
	184	for (i = 0; i < box_width; i++) {
	185	if (!instr[show_x + i]) {
	186	waddch(dialog, ' ');
	187	break;
	188	}
	189	waddch(dialog, instr[show_x + i]);
	190	}
	191	wmove(dialog, box_y, input_x + box_x);
	192	}
	193	pos++;
	194	}
	195	continue;
b1c5f1c6 SR	196	default:
b1c5f1c6 SR	197	if (key < 0x100 && isprint(key)) {
87727d45	198	if (len < MAX_LEN) {
98e5a157	199	wattrset(dialog, dlg.inputbox.atr);
87727d45 WY	200	if (pos < len) {
	201	for (i = len; i > pos; i--)
	202	instr[i] = instr[i-1];
	203	instr[pos] = key;
	204	} else {
	205	instr[len] = key;
	206	}
	207	pos++;
	208	len++;
	209	instr[len] = '\0';
	210
b1c5f1c6	211	if (input_x == box_width - 1) {
87727d45	212	show_x++;
b1c5f1c6	213	} else {
87727d45 WY	214	input_x++;
	215	}
	216
	217	wmove(dialog, box_y, box_x);
	218	for (i = 0; i < box_width; i++) {
	219	if (!instr[show_x + i]) {
	220	waddch(dialog, ' ');
	221	break;
	222	}
	223	waddch(dialog, instr[show_x + i]);
b1c5f1c6	224	}
87727d45	225	wmove(dialog, box_y, input_x + box_x);
b1c5f1c6 SR	226	wrefresh(dialog);
	227	} else
	228	flash(); /* Alarm user about overflow */
	229	continue;
	230	}
	231	}
1da177e4	232	}
b1c5f1c6 SR	233	switch (key) {
	234	case 'O':
	235	case 'o':
	236	delwin(dialog);
	237	return 0;
	238	case 'H':
	239	case 'h':
	240	delwin(dialog);
	241	return 1;
	242	case KEY_UP:
	243	case KEY_LEFT:
	244	switch (button) {
	245	case -1:
4280eae0	246	button = 1; /* Indicates "Help" button is selected */
b1c5f1c6 SR	247	print_buttons(dialog, height, width, 1);
	248	break;
	249	case 0:
	250	button = -1; /* Indicates input box is selected */
	251	print_buttons(dialog, height, width, 0);
	252	wmove(dialog, box_y, box_x + input_x);
	253	wrefresh(dialog);
	254	break;
	255	case 1:
	256	button = 0; /* Indicates "OK" button is selected */
	257	print_buttons(dialog, height, width, 0);
	258	break;
1da177e4	259	}
b1c5f1c6 SR	260	break;
	261	case TAB:
	262	case KEY_DOWN:
	263	case KEY_RIGHT:
	264	switch (button) {
	265	case -1:
	266	button = 0; /* Indicates "OK" button is selected */
	267	print_buttons(dialog, height, width, 0);
	268	break;
	269	case 0:
4280eae0	270	button = 1; /* Indicates "Help" button is selected */
b1c5f1c6 SR	271	print_buttons(dialog, height, width, 1);
	272	break;
	273	case 1:
	274	button = -1; /* Indicates input box is selected */
	275	print_buttons(dialog, height, width, 0);
	276	wmove(dialog, box_y, box_x + input_x);
	277	wrefresh(dialog);
	278	break;
	279	}
	280	break;
	281	case ' ':
	282	case '\n':
	283	delwin(dialog);
	284	return (button == -1 ? 0 : button);
	285	case 'X':
	286	case 'x':
f3cbcdc9 SR	287	key = KEY_ESC;
	288	break;
	289	case KEY_ESC:
	290	key = on_key_esc(dialog);
b1c5f1c6	291	break;
c8dc68ad SR	292	case KEY_RESIZE:
	293	delwin(dialog);
	294	on_key_resize();
	295	goto do_resize;
1da177e4	296	}
1da177e4	297	}
1da177e4	298
b1c5f1c6	299	delwin(dialog);
f3cbcdc9	300	return KEY_ESC; /* ESC pressed */
1da177e4	301	}