cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

checklist.c (7746B)

      1// SPDX-License-Identifier: GPL-2.0+
      2/*
      3 *  checklist.c -- implements the checklist box
      4 *
      5 *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
      6 *     Stuart Herbert - S.Herbert@sheffield.ac.uk: radiolist extension
      7 *     Alessandro Rubini - rubini@ipvvis.unipv.it: merged the two
      8 *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
      9 */
     10
     11#include "dialog.h"
     12
     13static int list_width, check_x, item_x;
     14
     15/*
     16 * Print list item
     17 */
     18static void print_item(WINDOW * win, int choice, int selected)
     19{
     20	int i;
     21	char *list_item = malloc(list_width + 1);
     22
     23	strncpy(list_item, item_str(), list_width - item_x);
     24	list_item[list_width - item_x] = '\0';
     25
     26	/* Clear 'residue' of last item */
     27	wattrset(win, dlg.menubox.atr);
     28	wmove(win, choice, 0);
     29	for (i = 0; i < list_width; i++)
     30		waddch(win, ' ');
     31
     32	wmove(win, choice, check_x);
     33	wattrset(win, selected ? dlg.check_selected.atr
     34		 : dlg.check.atr);
     35	if (!item_is_tag(':'))
     36		wprintw(win, "(%c)", item_is_tag('X') ? 'X' : ' ');
     37
     38	wattrset(win, selected ? dlg.tag_selected.atr : dlg.tag.atr);
     39	mvwaddch(win, choice, item_x, list_item[0]);
     40	wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr);
     41	waddstr(win, list_item + 1);
     42	if (selected) {
     43		wmove(win, choice, check_x + 1);
     44		wrefresh(win);
     45	}
     46	free(list_item);
     47}
     48
     49/*
     50 * Print the scroll indicators.
     51 */
     52static void print_arrows(WINDOW * win, int choice, int item_no, int scroll,
     53	     int y, int x, int height)
     54{
     55	wmove(win, y, x);
     56
     57	if (scroll > 0) {
     58		wattrset(win, dlg.uarrow.atr);
     59		waddch(win, ACS_UARROW);
     60		waddstr(win, "(-)");
     61	} else {
     62		wattrset(win, dlg.menubox.atr);
     63		waddch(win, ACS_HLINE);
     64		waddch(win, ACS_HLINE);
     65		waddch(win, ACS_HLINE);
     66		waddch(win, ACS_HLINE);
     67	}
     68
     69	y = y + height + 1;
     70	wmove(win, y, x);
     71
     72	if ((height < item_no) && (scroll + choice < item_no - 1)) {
     73		wattrset(win, dlg.darrow.atr);
     74		waddch(win, ACS_DARROW);
     75		waddstr(win, "(+)");
     76	} else {
     77		wattrset(win, dlg.menubox_border.atr);
     78		waddch(win, ACS_HLINE);
     79		waddch(win, ACS_HLINE);
     80		waddch(win, ACS_HLINE);
     81		waddch(win, ACS_HLINE);
     82	}
     83}
     84
     85/*
     86 *  Display the termination buttons
     87 */
     88static void print_buttons(WINDOW * dialog, int height, int width, int selected)
     89{
     90	int x = width / 2 - 11;
     91	int y = height - 2;
     92
     93	print_button(dialog, "Select", y, x, selected == 0);
     94	print_button(dialog, " Help ", y, x + 14, selected == 1);
     95
     96	wmove(dialog, y, x + 1 + 14 * selected);
     97	wrefresh(dialog);
     98}
     99
    100/*
    101 * Display a dialog box with a list of options that can be turned on or off
    102 * in the style of radiolist (only one option turned on at a time).
    103 */
    104int dialog_checklist(const char *title, const char *prompt, int height,
    105		     int width, int list_height)
    106{
    107	int i, x, y, box_x, box_y;
    108	int key = 0, button = 0, choice = 0, scroll = 0, max_choice;
    109	WINDOW *dialog, *list;
    110
    111	/* which item to highlight */
    112	item_foreach() {
    113		if (item_is_tag('X'))
    114			choice = item_n();
    115		if (item_is_selected()) {
    116			choice = item_n();
    117			break;
    118		}
    119	}
    120
    121do_resize:
    122	if (getmaxy(stdscr) < (height + CHECKLIST_HEIGTH_MIN))
    123		return -ERRDISPLAYTOOSMALL;
    124	if (getmaxx(stdscr) < (width + CHECKLIST_WIDTH_MIN))
    125		return -ERRDISPLAYTOOSMALL;
    126
    127	max_choice = MIN(list_height, item_count());
    128
    129	/* center dialog box on screen */
    130	x = (getmaxx(stdscr) - width) / 2;
    131	y = (getmaxy(stdscr) - height) / 2;
    132
    133	draw_shadow(stdscr, y, x, height, width);
    134
    135	dialog = newwin(height, width, y, x);
    136	keypad(dialog, TRUE);
    137
    138	draw_box(dialog, 0, 0, height, width,
    139		 dlg.dialog.atr, dlg.border.atr);
    140	wattrset(dialog, dlg.border.atr);
    141	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
    142	for (i = 0; i < width - 2; i++)
    143		waddch(dialog, ACS_HLINE);
    144	wattrset(dialog, dlg.dialog.atr);
    145	waddch(dialog, ACS_RTEE);
    146
    147	print_title(dialog, title, width);
    148
    149	wattrset(dialog, dlg.dialog.atr);
    150	print_autowrap(dialog, prompt, width - 2, 1, 3);
    151
    152	list_width = width - 6;
    153	box_y = height - list_height - 5;
    154	box_x = (width - list_width) / 2 - 1;
    155
    156	/* create new window for the list */
    157	list = subwin(dialog, list_height, list_width, y + box_y + 1,
    158		      x + box_x + 1);
    159
    160	keypad(list, TRUE);
    161
    162	/* draw a box around the list items */
    163	draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,
    164		 dlg.menubox_border.atr, dlg.menubox.atr);
    165
    166	/* Find length of longest item in order to center checklist */
    167	check_x = 0;
    168	item_foreach()
    169		check_x = MAX(check_x, strlen(item_str()) + 4);
    170	check_x = MIN(check_x, list_width);
    171
    172	check_x = (list_width - check_x) / 2;
    173	item_x = check_x + 4;
    174
    175	if (choice >= list_height) {
    176		scroll = choice - list_height + 1;
    177		choice -= scroll;
    178	}
    179
    180	/* Print the list */
    181	for (i = 0; i < max_choice; i++) {
    182		item_set(scroll + i);
    183		print_item(list, i, i == choice);
    184	}
    185
    186	print_arrows(dialog, choice, item_count(), scroll,
    187		     box_y, box_x + check_x + 5, list_height);
    188
    189	print_buttons(dialog, height, width, 0);
    190
    191	wnoutrefresh(dialog);
    192	wnoutrefresh(list);
    193	doupdate();
    194
    195	while (key != KEY_ESC) {
    196		key = wgetch(dialog);
    197
    198		for (i = 0; i < max_choice; i++) {
    199			item_set(i + scroll);
    200			if (toupper(key) == toupper(item_str()[0]))
    201				break;
    202		}
    203
    204		if (i < max_choice || key == KEY_UP || key == KEY_DOWN ||
    205		    key == '+' || key == '-') {
    206			if (key == KEY_UP || key == '-') {
    207				if (!choice) {
    208					if (!scroll)
    209						continue;
    210					/* Scroll list down */
    211					if (list_height > 1) {
    212						/* De-highlight current first item */
    213						item_set(scroll);
    214						print_item(list, 0, FALSE);
    215						scrollok(list, TRUE);
    216						wscrl(list, -1);
    217						scrollok(list, FALSE);
    218					}
    219					scroll--;
    220					item_set(scroll);
    221					print_item(list, 0, TRUE);
    222					print_arrows(dialog, choice, item_count(),
    223						     scroll, box_y, box_x + check_x + 5, list_height);
    224
    225					wnoutrefresh(dialog);
    226					wrefresh(list);
    227
    228					continue;	/* wait for another key press */
    229				} else
    230					i = choice - 1;
    231			} else if (key == KEY_DOWN || key == '+') {
    232				if (choice == max_choice - 1) {
    233					if (scroll + choice >= item_count() - 1)
    234						continue;
    235					/* Scroll list up */
    236					if (list_height > 1) {
    237						/* De-highlight current last item before scrolling up */
    238						item_set(scroll + max_choice - 1);
    239						print_item(list,
    240							    max_choice - 1,
    241							    FALSE);
    242						scrollok(list, TRUE);
    243						wscrl(list, 1);
    244						scrollok(list, FALSE);
    245					}
    246					scroll++;
    247					item_set(scroll + max_choice - 1);
    248					print_item(list, max_choice - 1, TRUE);
    249
    250					print_arrows(dialog, choice, item_count(),
    251						     scroll, box_y, box_x + check_x + 5, list_height);
    252
    253					wnoutrefresh(dialog);
    254					wrefresh(list);
    255
    256					continue;	/* wait for another key press */
    257				} else
    258					i = choice + 1;
    259			}
    260			if (i != choice) {
    261				/* De-highlight current item */
    262				item_set(scroll + choice);
    263				print_item(list, choice, FALSE);
    264				/* Highlight new item */
    265				choice = i;
    266				item_set(scroll + choice);
    267				print_item(list, choice, TRUE);
    268				wnoutrefresh(dialog);
    269				wrefresh(list);
    270			}
    271			continue;	/* wait for another key press */
    272		}
    273		switch (key) {
    274		case 'H':
    275		case 'h':
    276		case '?':
    277			button = 1;
    278			/* fall-through */
    279		case 'S':
    280		case 's':
    281		case ' ':
    282		case '\n':
    283			item_foreach()
    284				item_set_selected(0);
    285			item_set(scroll + choice);
    286			item_set_selected(1);
    287			delwin(list);
    288			delwin(dialog);
    289			return button;
    290		case TAB:
    291		case KEY_LEFT:
    292		case KEY_RIGHT:
    293			button = ((key == KEY_LEFT ? --button : ++button) < 0)
    294			    ? 1 : (button > 1 ? 0 : button);
    295
    296			print_buttons(dialog, height, width, button);
    297			wrefresh(dialog);
    298			break;
    299		case 'X':
    300		case 'x':
    301			key = KEY_ESC;
    302			break;
    303		case KEY_ESC:
    304			key = on_key_esc(dialog);
    305			break;
    306		case KEY_RESIZE:
    307			delwin(list);
    308			delwin(dialog);
    309			on_key_resize();
    310			goto do_resize;
    311		}
    312
    313		/* Now, update everything... */
    314		doupdate();
    315	}
    316	delwin(list);
    317	delwin(dialog);
    318	return key;		/* ESC pressed */
    319}