/* *  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, "  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, scroll = 0, key = 0, button = -1;	char *instr = dialog_input_result;	WINDOW *dialog; 	if (!init)		instr[0] = '\0';	else		strcpy(instr, init); do_resize:	if (getmaxy(stdscr) <= (height - 2))		return -ERRDISPLAYTOOSMALL;	if (getmaxx(stdscr) <= (width - 2))		return -ERRDISPLAYTOOSMALL; 	/* center dialog box on screen */	x = (COLS - width) / 2;	y = (LINES - 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.border.atr, dlg.dialog.atr); 	print_buttons(dialog, height, width, 0); 	/* Set up the initial value */	wmove(dialog, box_y, box_x);	wattrset(dialog, dlg.inputbox.atr); 	input_x = strlen(instr); 	if (input_x >= box_width) {		scroll = input_x - box_width + 1;		input_x = box_width - 1;		for (i = 0; i < box_width - 1; i++)			waddch(dialog, instr[scroll + i]);	} else {		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_LEFT:				continue;			case KEY_RIGHT:				continue;			case KEY_BACKSPACE:			case 127:				if (input_x || scroll) {					wattrset(dialog, dlg.inputbox.atr);					if (!input_x) {						scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);						wmove(dialog, box_y, box_x);						for (i = 0; i < box_width; i++)							waddch(dialog,							       instr[scroll + input_x + i] ?							       instr[scroll + input_x + i] : ' ');						input_x = strlen(instr) - scroll;					} else						input_x--;					instr[scroll + input_x] = '\0';					mvwaddch(dialog, box_y, input_x + box_x, ' ');					wmove(dialog, box_y, input_x + box_x);					wrefresh(dialog);				}				continue;			default:				if (key < 0x100 && isprint(key)) {					if (scroll + input_x < MAX_LEN) {						wattrset(dialog, dlg.inputbox.atr);						instr[scroll + input_x] = key;						instr[scroll + input_x + 1] = '\0';						if (input_x == box_width - 1) {							scroll++;							wmove(dialog, box_y, box_x);							for (i = 0; i < box_width - 1; i++)								waddch(dialog, instr [scroll + i]);						} else {							wmove(dialog, box_y, input_x++ + box_x);							waddch(dialog, key);						}						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 "Cancel" 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 "Cancel" 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 */}