yann@1: /*
yann@1:  *  inputbox.c -- implements the input box
yann@1:  *
yann@1:  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
yann@1:  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
yann@1:  *
yann@1:  *  This program is free software; you can redistribute it and/or
yann@1:  *  modify it under the terms of the GNU General Public License
yann@1:  *  as published by the Free Software Foundation; either version 2
yann@1:  *  of the License, or (at your option) any later version.
yann@1:  *
yann@1:  *  This program is distributed in the hope that it will be useful,
yann@1:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
yann@1:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
yann@1:  *  GNU General Public License for more details.
yann@1:  *
yann@1:  *  You should have received a copy of the GNU General Public License
yann@1:  *  along with this program; if not, write to the Free Software
yann@1:  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
yann@1:  */
yann@1: 
yann@1: #include "dialog.h"
yann@1: 
yann@1: char dialog_input_result[MAX_LEN + 1];
yann@1: 
yann@1: /*
yann@1:  *  Print the termination buttons
yann@1:  */
yann@1: static void print_buttons(WINDOW * dialog, int height, int width, int selected)
yann@1: {
yann@1: 	int x = width / 2 - 11;
yann@1: 	int y = height - 2;
yann@1: 
yann@943: 	print_button(dialog, gettext("  Ok  "), y, x, selected == 0);
yann@943: 	print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);
yann@1: 
yann@1: 	wmove(dialog, y, x + 1 + 14 * selected);
yann@1: 	wrefresh(dialog);
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Display a dialog box for inputing a string
yann@1:  */
yann@1: int dialog_inputbox(const char *title, const char *prompt, int height, int width,
yann@1:                     const char *init)
yann@1: {
yann@1: 	int i, x, y, box_y, box_x, box_width;
yann@1: 	int input_x = 0, scroll = 0, key = 0, button = -1;
yann@1: 	char *instr = dialog_input_result;
yann@1: 	WINDOW *dialog;
yann@1: 
yann@1: 	if (!init)
yann@1: 		instr[0] = '\0';
yann@1: 	else
yann@1: 		strcpy(instr, init);
yann@1: 
yann@1: do_resize:
yann@1: 	if (getmaxy(stdscr) <= (height - 2))
yann@1: 		return -ERRDISPLAYTOOSMALL;
yann@1: 	if (getmaxx(stdscr) <= (width - 2))
yann@1: 		return -ERRDISPLAYTOOSMALL;
yann@1: 
yann@1: 	/* center dialog box on screen */
yann@1: 	x = (COLS - width) / 2;
yann@1: 	y = (LINES - height) / 2;
yann@1: 
yann@1: 	draw_shadow(stdscr, y, x, height, width);
yann@1: 
yann@1: 	dialog = newwin(height, width, y, x);
yann@1: 	keypad(dialog, TRUE);
yann@1: 
yann@1: 	draw_box(dialog, 0, 0, height, width,
yann@1: 		 dlg.dialog.atr, dlg.border.atr);
yann@1: 	wattrset(dialog, dlg.border.atr);
yann@1: 	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
yann@1: 	for (i = 0; i < width - 2; i++)
yann@1: 		waddch(dialog, ACS_HLINE);
yann@1: 	wattrset(dialog, dlg.dialog.atr);
yann@1: 	waddch(dialog, ACS_RTEE);
yann@1: 
yann@1: 	print_title(dialog, title, width);
yann@1: 
yann@1: 	wattrset(dialog, dlg.dialog.atr);
yann@1: 	print_autowrap(dialog, prompt, width - 2, 1, 3);
yann@1: 
yann@1: 	/* Draw the input field box */
yann@1: 	box_width = width - 6;
yann@1: 	getyx(dialog, y, x);
yann@1: 	box_y = y + 2;
yann@1: 	box_x = (width - box_width) / 2;
yann@1: 	draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
yann@943: 		 dlg.dialog.atr, dlg.border.atr);
yann@1: 
yann@1: 	print_buttons(dialog, height, width, 0);
yann@1: 
yann@1: 	/* Set up the initial value */
yann@1: 	wmove(dialog, box_y, box_x);
yann@1: 	wattrset(dialog, dlg.inputbox.atr);
yann@1: 
yann@1: 	input_x = strlen(instr);
yann@1: 
yann@1: 	if (input_x >= box_width) {
yann@1: 		scroll = input_x - box_width + 1;
yann@1: 		input_x = box_width - 1;
yann@1: 		for (i = 0; i < box_width - 1; i++)
yann@1: 			waddch(dialog, instr[scroll + i]);
yann@1: 	} else {
yann@1: 		waddstr(dialog, instr);
yann@1: 	}
yann@1: 
yann@1: 	wmove(dialog, box_y, box_x + input_x);
yann@1: 
yann@1: 	wrefresh(dialog);
yann@1: 
yann@1: 	while (key != KEY_ESC) {
yann@1: 		key = wgetch(dialog);
yann@1: 
yann@1: 		if (button == -1) {	/* Input box selected */
yann@1: 			switch (key) {
yann@1: 			case TAB:
yann@1: 			case KEY_UP:
yann@1: 			case KEY_DOWN:
yann@1: 				break;
yann@1: 			case KEY_LEFT:
yann@1: 				continue;
yann@1: 			case KEY_RIGHT:
yann@1: 				continue;
yann@1: 			case KEY_BACKSPACE:
yann@1: 			case 127:
yann@1: 				if (input_x || scroll) {
yann@1: 					wattrset(dialog, dlg.inputbox.atr);
yann@1: 					if (!input_x) {
yann@1: 						scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);
yann@1: 						wmove(dialog, box_y, box_x);
yann@1: 						for (i = 0; i < box_width; i++)
yann@1: 							waddch(dialog,
yann@1: 							       instr[scroll + input_x + i] ?
yann@1: 							       instr[scroll + input_x + i] : ' ');
yann@1: 						input_x = strlen(instr) - scroll;
yann@1: 					} else
yann@1: 						input_x--;
yann@1: 					instr[scroll + input_x] = '\0';
yann@1: 					mvwaddch(dialog, box_y, input_x + box_x, ' ');
yann@1: 					wmove(dialog, box_y, input_x + box_x);
yann@1: 					wrefresh(dialog);
yann@1: 				}
yann@1: 				continue;
yann@1: 			default:
yann@1: 				if (key < 0x100 && isprint(key)) {
yann@1: 					if (scroll + input_x < MAX_LEN) {
yann@1: 						wattrset(dialog, dlg.inputbox.atr);
yann@1: 						instr[scroll + input_x] = key;
yann@1: 						instr[scroll + input_x + 1] = '\0';
yann@1: 						if (input_x == box_width - 1) {
yann@1: 							scroll++;
yann@1: 							wmove(dialog, box_y, box_x);
yann@1: 							for (i = 0; i < box_width - 1; i++)
yann@1: 								waddch(dialog, instr [scroll + i]);
yann@1: 						} else {
yann@1: 							wmove(dialog, box_y, input_x++ + box_x);
yann@1: 							waddch(dialog, key);
yann@1: 						}
yann@1: 						wrefresh(dialog);
yann@1: 					} else
yann@1: 						flash();	/* Alarm user about overflow */
yann@1: 					continue;
yann@1: 				}
yann@1: 			}
yann@1: 		}
yann@1: 		switch (key) {
yann@1: 		case 'O':
yann@1: 		case 'o':
yann@1: 			delwin(dialog);
yann@1: 			return 0;
yann@1: 		case 'H':
yann@1: 		case 'h':
yann@1: 			delwin(dialog);
yann@1: 			return 1;
yann@1: 		case KEY_UP:
yann@1: 		case KEY_LEFT:
yann@1: 			switch (button) {
yann@1: 			case -1:
yann@1: 				button = 1;	/* Indicates "Cancel" button is selected */
yann@1: 				print_buttons(dialog, height, width, 1);
yann@1: 				break;
yann@1: 			case 0:
yann@1: 				button = -1;	/* Indicates input box is selected */
yann@1: 				print_buttons(dialog, height, width, 0);
yann@1: 				wmove(dialog, box_y, box_x + input_x);
yann@1: 				wrefresh(dialog);
yann@1: 				break;
yann@1: 			case 1:
yann@1: 				button = 0;	/* Indicates "OK" button is selected */
yann@1: 				print_buttons(dialog, height, width, 0);
yann@1: 				break;
yann@1: 			}
yann@1: 			break;
yann@1: 		case TAB:
yann@1: 		case KEY_DOWN:
yann@1: 		case KEY_RIGHT:
yann@1: 			switch (button) {
yann@1: 			case -1:
yann@1: 				button = 0;	/* Indicates "OK" button is selected */
yann@1: 				print_buttons(dialog, height, width, 0);
yann@1: 				break;
yann@1: 			case 0:
yann@1: 				button = 1;	/* Indicates "Cancel" button is selected */
yann@1: 				print_buttons(dialog, height, width, 1);
yann@1: 				break;
yann@1: 			case 1:
yann@1: 				button = -1;	/* Indicates input box is selected */
yann@1: 				print_buttons(dialog, height, width, 0);
yann@1: 				wmove(dialog, box_y, box_x + input_x);
yann@1: 				wrefresh(dialog);
yann@1: 				break;
yann@1: 			}
yann@1: 			break;
yann@1: 		case ' ':
yann@1: 		case '\n':
yann@1: 			delwin(dialog);
yann@1: 			return (button == -1 ? 0 : button);
yann@1: 		case 'X':
yann@1: 		case 'x':
yann@1: 			key = KEY_ESC;
yann@1: 			break;
yann@1: 		case KEY_ESC:
yann@1: 			key = on_key_esc(dialog);
yann@1: 			break;
yann@1: 		case KEY_RESIZE:
yann@1: 			delwin(dialog);
yann@1: 			on_key_resize();
yann@1: 			goto do_resize;
yann@1: 		}
yann@1: 	}
yann@1: 
yann@1: 	delwin(dialog);
yann@1: 	return KEY_ESC;		/* ESC pressed */
yann@1: }