[mirror_ubuntu-kernels.git] / scripts / kconfig / lxdialog / inputbox.c

// SPDX-License-Identifier: GPL-2.0+
/*
 *  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)
 */

#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, "  Ok  ", y, x, selected == 0);
	print_button(dialog, " 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 8:   /* ^H */
			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
0c874100	1	// SPDX-License-Identifier: GPL-2.0+
1da177e4 LT	2	/*
	3	* inputbox.c -- implements the input box
	4	*
	5	* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
	6	* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
1da177e4 LT	7	*/
	8
	9	#include "dialog.h"
	10
84c2a2eb	11	char dialog_input_result[MAX_LEN + 1];
1da177e4 LT	12
	13	/*
	14	* Print the termination buttons
	15	*/
b1c5f1c6	16	static void print_buttons(WINDOW * dialog, int height, int width, int selected)
1da177e4	17	{
b1c5f1c6 SR	18	int x = width / 2 - 11;
b1c5f1c6 SR	19	int y = height - 2;
1da177e4	20
694c49a7 SR	21	print_button(dialog, " Ok ", y, x, selected == 0);
694c49a7 SR	22	print_button(dialog, " Help ", y, x + 14, selected == 1);
1da177e4	23
b1c5f1c6 SR	24	wmove(dialog, y, x + 1 + 14 * selected);
b1c5f1c6 SR	25	wrefresh(dialog);
1da177e4 LT	26	}
	27
	28	/*
	29	* Display a dialog box for inputing a string
	30	*/
dec69da8	31	int dialog_inputbox(const char title, const char prompt, int height, int width,
bb66fc67	32	const char *init)
1da177e4	33	{
b1c5f1c6	34	int i, x, y, box_y, box_x, box_width;
87727d45 WY	35	int input_x = 0, key = 0, button = -1;
87727d45 WY	36	int show_x, len, pos;
b1c5f1c6 SR	37	char *instr = dialog_input_result;
	38	WINDOW *dialog;
	39
c8dc68ad SR	40	if (!init)
	41	instr[0] = '\0';
	42	else
	43	strcpy(instr, init);
	44
	45	do_resize:
851f6657	46	if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN))
c8dc68ad	47	return -ERRDISPLAYTOOSMALL;
851f6657	48	if (getmaxx(stdscr) <= (width - INPUTBOX_WIDTH_MIN))
c8dc68ad SR	49	return -ERRDISPLAYTOOSMALL;
c8dc68ad SR	50
b1c5f1c6	51	/* center dialog box on screen */
4f2de3e1 DG	52	x = (getmaxx(stdscr) - width) / 2;
4f2de3e1 DG	53	y = (getmaxy(stdscr) - height) / 2;
b1c5f1c6 SR	54
	55	draw_shadow(stdscr, y, x, height, width);
	56
	57	dialog = newwin(height, width, y, x);
	58	keypad(dialog, TRUE);
	59
98e5a157 SR	60	draw_box(dialog, 0, 0, height, width,
	61	dlg.dialog.atr, dlg.border.atr);
	62	wattrset(dialog, dlg.border.atr);
b1c5f1c6 SR	63	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
	64	for (i = 0; i < width - 2; i++)
	65	waddch(dialog, ACS_HLINE);
98e5a157	66	wattrset(dialog, dlg.dialog.atr);
b1c5f1c6 SR	67	waddch(dialog, ACS_RTEE);
b1c5f1c6 SR	68
fa7009d5	69	print_title(dialog, title, width);
b1c5f1c6	70
98e5a157	71	wattrset(dialog, dlg.dialog.atr);
b1c5f1c6 SR	72	print_autowrap(dialog, prompt, width - 2, 1, 3);
	73
	74	/* Draw the input field box */
	75	box_width = width - 6;
	76	getyx(dialog, y, x);
	77	box_y = y + 2;
	78	box_x = (width - box_width) / 2;
98e5a157	79	draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
79d6e539	80	dlg.dialog.atr, dlg.border.atr);
b1c5f1c6 SR	81
	82	print_buttons(dialog, height, width, 0);
	83
	84	/* Set up the initial value */
	85	wmove(dialog, box_y, box_x);
98e5a157	86	wattrset(dialog, dlg.inputbox.atr);
b1c5f1c6	87
87727d45 WY	88	len = strlen(instr);
87727d45 WY	89	pos = len;
b1c5f1c6	90
87727d45 WY	91	if (len >= box_width) {
87727d45 WY	92	show_x = len - box_width + 1;
b1c5f1c6 SR	93	input_x = box_width - 1;
b1c5f1c6 SR	94	for (i = 0; i < box_width - 1; i++)
87727d45	95	waddch(dialog, instr[show_x + i]);
dec69da8	96	} else {
87727d45 WY	97	show_x = 0;
87727d45 WY	98	input_x = len;
b1c5f1c6	99	waddstr(dialog, instr);
dec69da8	100	}
b1c5f1c6 SR	101
	102	wmove(dialog, box_y, box_x + input_x);
	103
	104	wrefresh(dialog);
	105
f3cbcdc9	106	while (key != KEY_ESC) {
b1c5f1c6 SR	107	key = wgetch(dialog);
	108
	109	if (button == -1) { /* Input box selected */
	110	switch (key) {
	111	case TAB:
	112	case KEY_UP:
	113	case KEY_DOWN:
	114	break;
b1c5f1c6	115	case KEY_BACKSPACE:
9c38f1f0 CD	116	case 8: /* ^H */
9c38f1f0 CD	117	case 127: /* ^? */
87727d45	118	if (pos) {
98e5a157	119	wattrset(dialog, dlg.inputbox.atr);
87727d45 WY	120	if (input_x == 0) {
87727d45 WY	121	show_x--;
b1c5f1c6 SR	122	} else
b1c5f1c6 SR	123	input_x--;
87727d45 WY	124
	125	if (pos < len) {
	126	for (i = pos - 1; i < len; i++) {
	127	instr[i] = instr[i+1];
	128	}
	129	}
	130
	131	pos--;
	132	len--;
	133	instr[len] = '\0';
	134	wmove(dialog, box_y, box_x);
	135	for (i = 0; i < box_width; i++) {
	136	if (!instr[show_x + i]) {
	137	waddch(dialog, ' ');
	138	break;
	139	}
	140	waddch(dialog, instr[show_x + i]);
	141	}
b1c5f1c6 SR	142	wmove(dialog, box_y, input_x + box_x);
	143	wrefresh(dialog);
	144	}
	145	continue;
87727d45 WY	146	case KEY_LEFT:
	147	if (pos > 0) {
	148	if (input_x > 0) {
	149	wmove(dialog, box_y, --input_x + box_x);
	150	} else if (input_x == 0) {
	151	show_x--;
	152	wmove(dialog, box_y, box_x);
	153	for (i = 0; i < box_width; i++) {
	154	if (!instr[show_x + i]) {
	155	waddch(dialog, ' ');
	156	break;
	157	}
	158	waddch(dialog, instr[show_x + i]);
	159	}
	160	wmove(dialog, box_y, box_x);
	161	}
	162	pos--;
	163	}
	164	continue;
	165	case KEY_RIGHT:
	166	if (pos < len) {
	167	if (input_x < box_width - 1) {
	168	wmove(dialog, box_y, ++input_x + box_x);
	169	} else if (input_x == box_width - 1) {
	170	show_x++;
	171	wmove(dialog, box_y, box_x);
	172	for (i = 0; i < box_width; i++) {
	173	if (!instr[show_x + i]) {
	174	waddch(dialog, ' ');
	175	break;
	176	}
	177	waddch(dialog, instr[show_x + i]);
	178	}
	179	wmove(dialog, box_y, input_x + box_x);
	180	}
	181	pos++;
	182	}
	183	continue;
b1c5f1c6 SR	184	default:
b1c5f1c6 SR	185	if (key < 0x100 && isprint(key)) {
87727d45	186	if (len < MAX_LEN) {
98e5a157	187	wattrset(dialog, dlg.inputbox.atr);
87727d45 WY	188	if (pos < len) {
	189	for (i = len; i > pos; i--)
	190	instr[i] = instr[i-1];
	191	instr[pos] = key;
	192	} else {
	193	instr[len] = key;
	194	}
	195	pos++;
	196	len++;
	197	instr[len] = '\0';
	198
b1c5f1c6	199	if (input_x == box_width - 1) {
87727d45	200	show_x++;
b1c5f1c6	201	} else {
87727d45 WY	202	input_x++;
	203	}
	204
	205	wmove(dialog, box_y, box_x);
	206	for (i = 0; i < box_width; i++) {
	207	if (!instr[show_x + i]) {
	208	waddch(dialog, ' ');
	209	break;
	210	}
	211	waddch(dialog, instr[show_x + i]);
b1c5f1c6	212	}
87727d45	213	wmove(dialog, box_y, input_x + box_x);
b1c5f1c6 SR	214	wrefresh(dialog);
	215	} else
	216	flash(); /* Alarm user about overflow */
	217	continue;
	218	}
	219	}
1da177e4	220	}
b1c5f1c6 SR	221	switch (key) {
	222	case 'O':
	223	case 'o':
	224	delwin(dialog);
	225	return 0;
	226	case 'H':
	227	case 'h':
	228	delwin(dialog);
	229	return 1;
	230	case KEY_UP:
	231	case KEY_LEFT:
	232	switch (button) {
	233	case -1:
4280eae0	234	button = 1; /* Indicates "Help" button is selected */
b1c5f1c6 SR	235	print_buttons(dialog, height, width, 1);
	236	break;
	237	case 0:
	238	button = -1; /* Indicates input box is selected */
	239	print_buttons(dialog, height, width, 0);
	240	wmove(dialog, box_y, box_x + input_x);
	241	wrefresh(dialog);
	242	break;
	243	case 1:
	244	button = 0; /* Indicates "OK" button is selected */
	245	print_buttons(dialog, height, width, 0);
	246	break;
1da177e4	247	}
b1c5f1c6 SR	248	break;
	249	case TAB:
	250	case KEY_DOWN:
	251	case KEY_RIGHT:
	252	switch (button) {
	253	case -1:
	254	button = 0; /* Indicates "OK" button is selected */
	255	print_buttons(dialog, height, width, 0);
	256	break;
	257	case 0:
4280eae0	258	button = 1; /* Indicates "Help" button is selected */
b1c5f1c6 SR	259	print_buttons(dialog, height, width, 1);
	260	break;
	261	case 1:
	262	button = -1; /* Indicates input box is selected */
	263	print_buttons(dialog, height, width, 0);
	264	wmove(dialog, box_y, box_x + input_x);
	265	wrefresh(dialog);
	266	break;
	267	}
	268	break;
	269	case ' ':
	270	case '\n':
	271	delwin(dialog);
	272	return (button == -1 ? 0 : button);
	273	case 'X':
	274	case 'x':
f3cbcdc9 SR	275	key = KEY_ESC;
	276	break;
	277	case KEY_ESC:
	278	key = on_key_esc(dialog);
b1c5f1c6	279	break;
c8dc68ad SR	280	case KEY_RESIZE:
	281	delwin(dialog);
	282	on_key_resize();
	283	goto do_resize;
1da177e4	284	}
1da177e4	285	}
1da177e4	286
b1c5f1c6	287	delwin(dialog);
f3cbcdc9	288	return KEY_ESC; /* ESC pressed */
1da177e4	289	}