/* *  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"unsigned char dialog_input_result[MAX_LEN + 1];/* *  Print the termination buttons */static voidprint_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 */intdialog_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;    unsigned char *instr = dialog_input_result;    WINDOW *dialog;    /* 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, dialog_attr, border_attr);    wattrset (dialog, border_attr);    mvwaddch (dialog, height-3, 0, ACS_LTEE);    for (i = 0; i < width - 2; i++)	waddch (dialog, ACS_HLINE);    wattrset (dialog, dialog_attr);    waddch (dialog, ACS_RTEE);    if (title != NULL && strlen(title) >= width-2 ) {	/* truncate long title -- mec */	char * title2 = malloc(width-2+1);	memcpy( title2, title, width-2 );	title2[width-2] = '\0';	title = title2;    }    if (title != NULL) {	wattrset (dialog, title_attr);	mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');	waddstr (dialog, (char *)title);	waddch (dialog, ' ');    }    wattrset (dialog, dialog_attr);    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,	      border_attr, dialog_attr);    print_buttons(dialog, height, width, 0);    /* Set up the initial value */    wmove (dialog, box_y, box_x);    wattrset (dialog, inputbox_attr);    if (!init)	instr[0] = '\0';    else	strcpy (instr, init);    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 != 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, inputbox_attr);		    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, inputbox_attr);			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 = ESC;	case ESC:	    break;	}    }    delwin (dialog);    return -1;			/* ESC pressed */}