1 // SPDX-License-Identifier: GPL-2.0+
3  *  menubox.c -- implements the menu box
12  *  [ 1998-06-13 ]
14  *    *)  A bugfix for the Page-Down problem
16  *    *)  Formerly when I used Page Down and Page Up, the cursor would be set
22  *        lxdialog is re-invoked by the Menuconfig shell script, can't
27  *        one, but it would be nice if Menuconfig could make another "rm -f"
28  *        just to be sure.  Just try it out - you will recognise a difference!
30  *  [ 1998-06-14 ]
32  *    *)  Now lxdialog is crash-safe against broken "lxdialog.scrltmp" files
42  * would leave mis-synchronized lxdialog.scrltmp files lying around,
59 	strncpy(menu_item, item, menu_width - item_x);  in do_print_item()
60 	menu_item[menu_width - item_x] = '\0';  in do_print_item()
102 		waddstr(win, "(-)");  in print_arrows()
136 	int x = width / 2 - 28;  in print_buttons()
137 	int y = height - 2;  in print_buttons()
168 	int key = 0, button = 0, scroll = 0, choice = 0;  in dialog_menu()  local
176 		return -ERRDISPLAYTOOSMALL;  in dialog_menu()
178 	height -= 4;  in dialog_menu()
179 	width  -= 5;  in dialog_menu()
180 	menu_height = height - 10;  in dialog_menu()
185 	x = (getmaxx(stdscr) - width) / 2;  in dialog_menu()
186 	y = (getmaxy(stdscr) - height) / 2;  in dialog_menu()
196 	mvwaddch(dialog, height - 3, 0, ACS_LTEE);  in dialog_menu()
197 	for (i = 0; i < width - 2; i++)  in dialog_menu()
206 	print_autowrap(dialog, prompt, width - 2, 1, 3);  in dialog_menu()
208 	menu_width = width - 6;  in dialog_menu()
209 	box_y = height - menu_height - 5;  in dialog_menu()
210 	box_x = (width - menu_width) / 2 - 1;  in dialog_menu()
222 		item_x = (menu_width - 70) / 2;  in dialog_menu()
235 		choice = choice - scroll;  in dialog_menu()
240 		if (choice >= item_count() - max_choice / 2)  in dialog_menu()
241 			scroll = first_item = item_count() - max_choice;  in dialog_menu()
243 			scroll = first_item = choice - max_choice / 2;  in dialog_menu()
244 		choice = choice - scroll;  in dialog_menu()
261 	while (key != KEY_ESC) {  in dialog_menu()
262 		key = wgetch(menu);  in dialog_menu()
264 		if (key < 256 && isalpha(key))  in dialog_menu()
265 			key = tolower(key);  in dialog_menu()
267 		if (strchr("ynmh", key))  in dialog_menu()
273 				if (key == tolower(item_str()[j]))  in dialog_menu()
280 					if (key == tolower(item_str()[j]))  in dialog_menu()
287 		     key == KEY_UP || key == KEY_DOWN ||  in dialog_menu()
288 		     key == '-' || key == '+' ||  in dialog_menu()
289 		     key == KEY_PPAGE || key == KEY_NPAGE)) {  in dialog_menu()
293 			if (key == KEY_UP || key == '-') {  in dialog_menu()
295 					/* Scroll menu down */  in dialog_menu()
296 					do_scroll(menu, &scroll, -1);  in dialog_menu()
300 					choice = MAX(choice - 1, 0);  in dialog_menu()
302 			} else if (key == KEY_DOWN || key == '+') {  in dialog_menu()
305 				if ((choice > max_choice - 3) &&  in dialog_menu()
310 					print_item(scroll+max_choice - 1,  in dialog_menu()
311 						   max_choice - 1, FALSE);  in dialog_menu()
313 					choice = MIN(choice + 1, max_choice - 1);  in dialog_menu()
315 			} else if (key == KEY_PPAGE) {  in dialog_menu()
319 						do_scroll(menu, &scroll, -1);  in dialog_menu()
323 							choice--;  in dialog_menu()
327 			} else if (key == KEY_NPAGE) {  in dialog_menu()
331 						print_item(scroll+max_choice-1,  in dialog_menu()
332 							   max_choice - 1, FALSE);  in dialog_menu()
349 			continue;	/* wait for another key press */  in dialog_menu()
352 		switch (key) {  in dialog_menu()
356 			button = ((key == KEY_LEFT ? --button : ++button) < 0)  in dialog_menu()
378 			switch (key) {  in dialog_menu()
401 			key = KEY_ESC;  in dialog_menu()
404 			key = on_key_esc(menu);  in dialog_menu()
415 	return key;		/* ESC pressed */  in dialog_menu()