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1/*
2 * menubox.c -- implements the menu box
3 *
4 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
5 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcapw@cfw.com)
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22/*
23 * Changes by Clifford Wolf (god@clifford.at)
24 *
25 * [ 1998-06-13 ]
26 *
27 * *) A bugfix for the Page-Down problem
28 *
29 * *) Formerly when I used Page Down and Page Up, the cursor would be set
30 * to the first position in the menu box. Now lxdialog is a bit
31 * smarter and works more like other menu systems (just have a look at
32 * it).
33 *
34 * *) Formerly if I selected something my scrolling would be broken because
35 * lxdialog is re-invoked by the Menuconfig shell script, can't
36 * remember the last scrolling position, and just sets it so that the
37 * cursor is at the bottom of the box. Now it writes the temporary file
38 * lxdialog.scrltmp which contains this information. The file is
39 * deleted by lxdialog if the user leaves a submenu or enters a new
40 * one, but it would be nice if Menuconfig could make another "rm -f"
41 * just to be sure. Just try it out - you will recognise a difference!
42 *
43 * [ 1998-06-14 ]
44 *
45 * *) Now lxdialog is crash-safe against broken "lxdialog.scrltmp" files
46 * and menus change their size on the fly.
47 *
48 * *) If for some reason the last scrolling position is not saved by
49 * lxdialog, it sets the scrolling so that the selected item is in the
50 * middle of the menu box, not at the bottom.
51 *
52 * 02 January 1999, Michael Elizabeth Chastain (mec@shout.net)
53 * Reset 'scroll' to 0 if the value from lxdialog.scrltmp is bogus.
54 * This fixes a bug in Menuconfig where using ' ' to descend into menus
55 * would leave mis-synchronized lxdialog.scrltmp files lying around,
56 * fscanf would read in 'scroll', and eventually that value would get used.
57 */
58
59#include "dialog.h"
60
61static int menu_width, item_x;
62
63/*
64 * Print menu item
65 */
66static void do_print_item(WINDOW * win, const char *item, int line_y,
67 int selected, int hotkey)
68{
69 int j;
70 char *menu_item = malloc(menu_width + 1);
71
72 strncpy(menu_item, item, menu_width - item_x);
73 menu_item[menu_width - item_x] = '\0';
74 j = first_alpha(menu_item, "YyNnMmHh");
75
76 /* Clear 'residue' of last item */
77 wattrset(win, dlg.menubox.atr);
78 wmove(win, line_y, 0);
79#if OLD_NCURSES
80 {
81 int i;
82 for (i = 0; i < menu_width; i++)
83 waddch(win, ' ');
84 }
85#else
86 wclrtoeol(win);
87#endif
88 wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr);
89 mvwaddstr(win, line_y, item_x, menu_item);
90 if (hotkey) {
91 wattrset(win, selected ? dlg.tag_key_selected.atr
92 : dlg.tag_key.atr);
93 mvwaddch(win, line_y, item_x + j, menu_item[j]);
94 }
95 if (selected) {
96 wmove(win, line_y, item_x + 1);
97 }
98 free(menu_item);
99 wrefresh(win);
100}
101
102#define print_item(index, choice, selected) \
103do { \
104 item_set(index); \
105 do_print_item(menu, item_str(), choice, selected, !item_is_tag(':')); \
106} while (0)
107
108/*
109 * Print the scroll indicators.
110 */
111static void print_arrows(WINDOW * win, int item_no, int scroll, int y, int x,
112 int height)
113{
114 int cur_y, cur_x;
115
116 getyx(win, cur_y, cur_x);
117
118 wmove(win, y, x);
119
120 if (scroll > 0) {
121 wattrset(win, dlg.uarrow.atr);
122 waddch(win, ACS_UARROW);
123 waddstr(win, "(-)");
124 } else {
125 wattrset(win, dlg.menubox.atr);
126 waddch(win, ACS_HLINE);
127 waddch(win, ACS_HLINE);
128 waddch(win, ACS_HLINE);
129 waddch(win, ACS_HLINE);
130 }
131
132 y = y + height + 1;
133 wmove(win, y, x);
134 wrefresh(win);
135
136 if ((height < item_no) && (scroll + height < item_no)) {
137 wattrset(win, dlg.darrow.atr);
138 waddch(win, ACS_DARROW);
139 waddstr(win, "(+)");
140 } else {
141 wattrset(win, dlg.menubox_border.atr);
142 waddch(win, ACS_HLINE);
143 waddch(win, ACS_HLINE);
144 waddch(win, ACS_HLINE);
145 waddch(win, ACS_HLINE);
146 }
147
148 wmove(win, cur_y, cur_x);
149 wrefresh(win);
150}
151
152/*
153 * Display the termination buttons.
154 */
155static void print_buttons(WINDOW * win, int height, int width, int selected)
156{
157 int x = width / 2 - 16;
158 int y = height - 2;
159
160 print_button(win, gettext("Select"), y, x, selected == 0);
161 print_button(win, gettext(" Exit "), y, x + 12, selected == 1);
162 print_button(win, gettext(" Help "), y, x + 24, selected == 2);
163
164 wmove(win, y, x + 1 + 12 * selected);
165 wrefresh(win);
166}
167
168/* scroll up n lines (n may be negative) */
169static void do_scroll(WINDOW *win, int *scroll, int n)
170{
171 /* Scroll menu up */
172 scrollok(win, TRUE);
173 wscrl(win, n);
174 scrollok(win, FALSE);
175 *scroll = *scroll + n;
176 wrefresh(win);
177}
178
179/*
180 * Display a menu for choosing among a number of options
181 */
182int dialog_menu(const char *title, const char *prompt,
183 const void *selected, int *s_scroll)
184{
185 int i, j, x, y, box_x, box_y;
186 int height, width, menu_height;
187 int key = 0, button = 0, scroll = 0, choice = 0;
188 int first_item = 0, max_choice;
189 WINDOW *dialog, *menu;
190
191do_resize:
192 height = getmaxy(stdscr);
193 width = getmaxx(stdscr);
194 if (height < 15 || width < 65)
195 return -ERRDISPLAYTOOSMALL;
196
197 height -= 4;
198 width -= 5;
199 menu_height = height - 10;
200
201 max_choice = MIN(menu_height, item_count());
202
203 /* center dialog box on screen */
204 x = (COLS - width) / 2;
205 y = (LINES - height) / 2;
206
207 draw_shadow(stdscr, y, x, height, width);
208
209 dialog = newwin(height, width, y, x);
210 keypad(dialog, TRUE);
211
212 draw_box(dialog, 0, 0, height, width,
213 dlg.dialog.atr, dlg.border.atr);
214 wattrset(dialog, dlg.border.atr);
215 mvwaddch(dialog, height - 3, 0, ACS_LTEE);
216 for (i = 0; i < width - 2; i++)
217 waddch(dialog, ACS_HLINE);
218 wattrset(dialog, dlg.dialog.atr);
219 wbkgdset(dialog, dlg.dialog.atr & A_COLOR);
220 waddch(dialog, ACS_RTEE);
221
222 print_title(dialog, title, width);
223
224 wattrset(dialog, dlg.dialog.atr);
225 print_autowrap(dialog, prompt, width - 2, 1, 3);
226
227 menu_width = width - 6;
228 box_y = height - menu_height - 5;
229 box_x = (width - menu_width) / 2 - 1;
230
231 /* create new window for the menu */
232 menu = subwin(dialog, menu_height, menu_width,
233 y + box_y + 1, x + box_x + 1);
234 keypad(menu, TRUE);
235
236 /* draw a box around the menu items */
237 draw_box(dialog, box_y, box_x, menu_height + 2, menu_width + 2,
238 dlg.menubox_border.atr, dlg.menubox.atr);
239
240 if (menu_width >= 80)
241 item_x = (menu_width - 70) / 2;
242 else
243 item_x = 4;
244
245 /* Set choice to default item */
246 item_foreach()
247 if (selected && (selected == item_data()))
248 choice = item_n();
249 /* get the saved scroll info */
250 scroll = *s_scroll;
251 if ((scroll <= choice) && (scroll + max_choice > choice) &&
252 (scroll >= 0) && (scroll + max_choice <= item_count())) {
253 first_item = scroll;
254 choice = choice - scroll;
255 } else {
256 scroll = 0;
257 }
258 if ((choice >= max_choice)) {
259 if (choice >= item_count() - max_choice / 2)
260 scroll = first_item = item_count() - max_choice;
261 else
262 scroll = first_item = choice - max_choice / 2;
263 choice = choice - scroll;
264 }
265
266 /* Print the menu */
267 for (i = 0; i < max_choice; i++) {
268 print_item(first_item + i, i, i == choice);
269 }
270
271 wnoutrefresh(menu);
272
273 print_arrows(dialog, item_count(), scroll,
274 box_y, box_x + item_x + 1, menu_height);
275
276 print_buttons(dialog, height, width, 0);
277 wmove(menu, choice, item_x + 1);
278 wrefresh(menu);
279
280 while (key != KEY_ESC) {
281 key = wgetch(menu);
282
283 if (key < 256 && isalpha(key))
284 key = tolower(key);
285
286 if (strchr("ynmh", key))
287 i = max_choice;
288 else {
289 for (i = choice + 1; i < max_choice; i++) {
290 item_set(scroll + i);
291 j = first_alpha(item_str(), "YyNnMmHh");
292 if (key == tolower(item_str()[j]))
293 break;
294 }
295 if (i == max_choice)
296 for (i = 0; i < max_choice; i++) {
297 item_set(scroll + i);
298 j = first_alpha(item_str(), "YyNnMmHh");
299 if (key == tolower(item_str()[j]))
300 break;
301 }
302 }
303
304 if (i < max_choice ||
305 key == KEY_UP || key == KEY_DOWN ||
306 key == '-' || key == '+' ||
307 key == KEY_PPAGE || key == KEY_NPAGE) {
308 /* Remove highligt of current item */
309 print_item(scroll + choice, choice, FALSE);
310
311 if (key == KEY_UP || key == '-') {
312 if (choice < 2 && scroll) {
313 /* Scroll menu down */
314 do_scroll(menu, &scroll, -1);
315
316 print_item(scroll, 0, FALSE);
317 } else
318 choice = MAX(choice - 1, 0);
319
320 } else if (key == KEY_DOWN || key == '+') {
321 print_item(scroll+choice, choice, FALSE);
322
323 if ((choice > max_choice - 3) &&
324 (scroll + max_choice < item_count())) {
325 /* Scroll menu up */
326 do_scroll(menu, &scroll, 1);
327
328 print_item(scroll+max_choice - 1,
329 max_choice - 1, FALSE);
330 } else
331 choice = MIN(choice + 1, max_choice - 1);
332
333 } else if (key == KEY_PPAGE) {
334 scrollok(menu, TRUE);
335 for (i = 0; (i < max_choice); i++) {
336 if (scroll > 0) {
337 do_scroll(menu, &scroll, -1);
338 print_item(scroll, 0, FALSE);
339 } else {
340 if (choice > 0)
341 choice--;
342 }
343 }
344
345 } else if (key == KEY_NPAGE) {
346 for (i = 0; (i < max_choice); i++) {
347 if (scroll + max_choice < item_count()) {
348 do_scroll(menu, &scroll, 1);
349 print_item(scroll+max_choice-1,
350 max_choice - 1, FALSE);
351 } else {
352 if (choice + 1 < max_choice)
353 choice++;
354 }
355 }
356 } else
357 choice = i;
358
359 print_item(scroll + choice, choice, TRUE);
360
361 print_arrows(dialog, item_count(), scroll,
362 box_y, box_x + item_x + 1, menu_height);
363
364 wnoutrefresh(dialog);
365 wrefresh(menu);
366
367 continue; /* wait for another key press */
368 }
369
370 switch (key) {
371 case KEY_LEFT:
372 case TAB:
373 case KEY_RIGHT:
374 button = ((key == KEY_LEFT ? --button : ++button) < 0)
375 ? 2 : (button > 2 ? 0 : button);
376
377 print_buttons(dialog, height, width, button);
378 wrefresh(menu);
379 break;
380 case ' ':
381 case 's':
382 case 'y':
383 case 'n':
384 case 'm':
385 case '/':
386 case 'h':
387 case '?':
388 case 'z':
389 case '\n':
390 /* save scroll info */
391 *s_scroll = scroll;
392 delwin(menu);
393 delwin(dialog);
394 item_set(scroll + choice);
395 item_set_selected(1);
396 switch (key) {
397 case 'h':
398 case '?':
399 return 2;
400 case 's':
401 case 'y':
402 return 3;
403 case 'n':
404 return 4;
405 case 'm':
406 return 5;
407 case ' ':
408 return 6;
409 case '/':
410 return 7;
411 case 'z':
412 return 8;
413 case '\n':
414 return button;
415 }
416 return 0;
417 case 'e':
418 case 'x':
419 key = KEY_ESC;
420 break;
421 case KEY_ESC:
422 key = on_key_esc(menu);
423 break;
424 case KEY_RESIZE:
425 on_key_resize();
426 delwin(menu);
427 delwin(dialog);
428 goto do_resize;
429 }
430 }
431 delwin(menu);
432 delwin(dialog);
433 return key; /* ESC pressed */
434}
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * menubox.c -- implements the menu box
4 *
5 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
6 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcapw@cfw.com)
7 */
8
9/*
10 * Changes by Clifford Wolf (god@clifford.at)
11 *
12 * [ 1998-06-13 ]
13 *
14 * *) A bugfix for the Page-Down problem
15 *
16 * *) Formerly when I used Page Down and Page Up, the cursor would be set
17 * to the first position in the menu box. Now lxdialog is a bit
18 * smarter and works more like other menu systems (just have a look at
19 * it).
20 *
21 * *) Formerly if I selected something my scrolling would be broken because
22 * lxdialog is re-invoked by the Menuconfig shell script, can't
23 * remember the last scrolling position, and just sets it so that the
24 * cursor is at the bottom of the box. Now it writes the temporary file
25 * lxdialog.scrltmp which contains this information. The file is
26 * deleted by lxdialog if the user leaves a submenu or enters a new
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!
29 *
30 * [ 1998-06-14 ]
31 *
32 * *) Now lxdialog is crash-safe against broken "lxdialog.scrltmp" files
33 * and menus change their size on the fly.
34 *
35 * *) If for some reason the last scrolling position is not saved by
36 * lxdialog, it sets the scrolling so that the selected item is in the
37 * middle of the menu box, not at the bottom.
38 *
39 * 02 January 1999, Michael Elizabeth Chastain (mec@shout.net)
40 * Reset 'scroll' to 0 if the value from lxdialog.scrltmp is bogus.
41 * This fixes a bug in Menuconfig where using ' ' to descend into menus
42 * would leave mis-synchronized lxdialog.scrltmp files lying around,
43 * fscanf would read in 'scroll', and eventually that value would get used.
44 */
45
46#include "dialog.h"
47
48static int menu_width, item_x;
49
50/*
51 * Print menu item
52 */
53static void do_print_item(WINDOW * win, const char *item, int line_y,
54 int selected, int hotkey)
55{
56 int j;
57 char *menu_item = malloc(menu_width + 1);
58
59 strncpy(menu_item, item, menu_width - item_x);
60 menu_item[menu_width - item_x] = '\0';
61 j = first_alpha(menu_item, "YyNnMmHh");
62
63 /* Clear 'residue' of last item */
64 wattrset(win, dlg.menubox.atr);
65 wmove(win, line_y, 0);
66#if OLD_NCURSES
67 {
68 int i;
69 for (i = 0; i < menu_width; i++)
70 waddch(win, ' ');
71 }
72#else
73 wclrtoeol(win);
74#endif
75 wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr);
76 mvwaddstr(win, line_y, item_x, menu_item);
77 if (hotkey) {
78 wattrset(win, selected ? dlg.tag_key_selected.atr
79 : dlg.tag_key.atr);
80 mvwaddch(win, line_y, item_x + j, menu_item[j]);
81 }
82 if (selected) {
83 wmove(win, line_y, item_x + 1);
84 }
85 free(menu_item);
86 wrefresh(win);
87}
88
89#define print_item(index, choice, selected) \
90do { \
91 item_set(index); \
92 do_print_item(menu, item_str(), choice, selected, !item_is_tag(':')); \
93} while (0)
94
95/*
96 * Print the scroll indicators.
97 */
98static void print_arrows(WINDOW * win, int item_no, int scroll, int y, int x,
99 int height)
100{
101 int cur_y, cur_x;
102
103 getyx(win, cur_y, cur_x);
104
105 wmove(win, y, x);
106
107 if (scroll > 0) {
108 wattrset(win, dlg.uarrow.atr);
109 waddch(win, ACS_UARROW);
110 waddstr(win, "(-)");
111 } else {
112 wattrset(win, dlg.menubox.atr);
113 waddch(win, ACS_HLINE);
114 waddch(win, ACS_HLINE);
115 waddch(win, ACS_HLINE);
116 waddch(win, ACS_HLINE);
117 }
118
119 y = y + height + 1;
120 wmove(win, y, x);
121 wrefresh(win);
122
123 if ((height < item_no) && (scroll + height < item_no)) {
124 wattrset(win, dlg.darrow.atr);
125 waddch(win, ACS_DARROW);
126 waddstr(win, "(+)");
127 } else {
128 wattrset(win, dlg.menubox_border.atr);
129 waddch(win, ACS_HLINE);
130 waddch(win, ACS_HLINE);
131 waddch(win, ACS_HLINE);
132 waddch(win, ACS_HLINE);
133 }
134
135 wmove(win, cur_y, cur_x);
136 wrefresh(win);
137}
138
139/*
140 * Display the termination buttons.
141 */
142static void print_buttons(WINDOW * win, int height, int width, int selected)
143{
144 int x = width / 2 - 28;
145 int y = height - 2;
146
147 print_button(win, "Select", y, x, selected == 0);
148 print_button(win, " Exit ", y, x + 12, selected == 1);
149 print_button(win, " Help ", y, x + 24, selected == 2);
150 print_button(win, " Save ", y, x + 36, selected == 3);
151 print_button(win, " Load ", y, x + 48, selected == 4);
152
153 wmove(win, y, x + 1 + 12 * selected);
154 wrefresh(win);
155}
156
157/* scroll up n lines (n may be negative) */
158static void do_scroll(WINDOW *win, int *scroll, int n)
159{
160 /* Scroll menu up */
161 scrollok(win, TRUE);
162 wscrl(win, n);
163 scrollok(win, FALSE);
164 *scroll = *scroll + n;
165 wrefresh(win);
166}
167
168/*
169 * Display a menu for choosing among a number of options
170 */
171int dialog_menu(const char *title, const char *prompt,
172 const void *selected, int *s_scroll)
173{
174 int i, j, x, y, box_x, box_y;
175 int height, width, menu_height;
176 int key = 0, button = 0, scroll = 0, choice = 0;
177 int first_item = 0, max_choice;
178 WINDOW *dialog, *menu;
179
180do_resize:
181 height = getmaxy(stdscr);
182 width = getmaxx(stdscr);
183 if (height < MENUBOX_HEIGTH_MIN || width < MENUBOX_WIDTH_MIN)
184 return -ERRDISPLAYTOOSMALL;
185
186 height -= 4;
187 width -= 5;
188 menu_height = height - 10;
189
190 max_choice = MIN(menu_height, item_count());
191
192 /* center dialog box on screen */
193 x = (getmaxx(stdscr) - width) / 2;
194 y = (getmaxy(stdscr) - height) / 2;
195
196 draw_shadow(stdscr, y, x, height, width);
197
198 dialog = newwin(height, width, y, x);
199 keypad(dialog, TRUE);
200
201 draw_box(dialog, 0, 0, height, width,
202 dlg.dialog.atr, dlg.border.atr);
203 wattrset(dialog, dlg.border.atr);
204 mvwaddch(dialog, height - 3, 0, ACS_LTEE);
205 for (i = 0; i < width - 2; i++)
206 waddch(dialog, ACS_HLINE);
207 wattrset(dialog, dlg.dialog.atr);
208 wbkgdset(dialog, dlg.dialog.atr & A_COLOR);
209 waddch(dialog, ACS_RTEE);
210
211 print_title(dialog, title, width);
212
213 wattrset(dialog, dlg.dialog.atr);
214 print_autowrap(dialog, prompt, width - 2, 1, 3);
215
216 menu_width = width - 6;
217 box_y = height - menu_height - 5;
218 box_x = (width - menu_width) / 2 - 1;
219
220 /* create new window for the menu */
221 menu = subwin(dialog, menu_height, menu_width,
222 y + box_y + 1, x + box_x + 1);
223 keypad(menu, TRUE);
224
225 /* draw a box around the menu items */
226 draw_box(dialog, box_y, box_x, menu_height + 2, menu_width + 2,
227 dlg.menubox_border.atr, dlg.menubox.atr);
228
229 if (menu_width >= 80)
230 item_x = (menu_width - 70) / 2;
231 else
232 item_x = 4;
233
234 /* Set choice to default item */
235 item_foreach()
236 if (selected && (selected == item_data()))
237 choice = item_n();
238 /* get the saved scroll info */
239 scroll = *s_scroll;
240 if ((scroll <= choice) && (scroll + max_choice > choice) &&
241 (scroll >= 0) && (scroll + max_choice <= item_count())) {
242 first_item = scroll;
243 choice = choice - scroll;
244 } else {
245 scroll = 0;
246 }
247 if ((choice >= max_choice)) {
248 if (choice >= item_count() - max_choice / 2)
249 scroll = first_item = item_count() - max_choice;
250 else
251 scroll = first_item = choice - max_choice / 2;
252 choice = choice - scroll;
253 }
254
255 /* Print the menu */
256 for (i = 0; i < max_choice; i++) {
257 print_item(first_item + i, i, i == choice);
258 }
259
260 wnoutrefresh(menu);
261
262 print_arrows(dialog, item_count(), scroll,
263 box_y, box_x + item_x + 1, menu_height);
264
265 print_buttons(dialog, height, width, 0);
266 wmove(menu, choice, item_x + 1);
267 wrefresh(menu);
268
269 while (key != KEY_ESC) {
270 key = wgetch(menu);
271
272 if (key < 256 && isalpha(key))
273 key = tolower(key);
274
275 if (strchr("ynmh", key))
276 i = max_choice;
277 else {
278 for (i = choice + 1; i < max_choice; i++) {
279 item_set(scroll + i);
280 j = first_alpha(item_str(), "YyNnMmHh");
281 if (key == tolower(item_str()[j]))
282 break;
283 }
284 if (i == max_choice)
285 for (i = 0; i < max_choice; i++) {
286 item_set(scroll + i);
287 j = first_alpha(item_str(), "YyNnMmHh");
288 if (key == tolower(item_str()[j]))
289 break;
290 }
291 }
292
293 if (item_count() != 0 &&
294 (i < max_choice ||
295 key == KEY_UP || key == KEY_DOWN ||
296 key == '-' || key == '+' ||
297 key == KEY_PPAGE || key == KEY_NPAGE)) {
298 /* Remove highligt of current item */
299 print_item(scroll + choice, choice, FALSE);
300
301 if (key == KEY_UP || key == '-') {
302 if (choice < 2 && scroll) {
303 /* Scroll menu down */
304 do_scroll(menu, &scroll, -1);
305
306 print_item(scroll, 0, FALSE);
307 } else
308 choice = MAX(choice - 1, 0);
309
310 } else if (key == KEY_DOWN || key == '+') {
311 print_item(scroll+choice, choice, FALSE);
312
313 if ((choice > max_choice - 3) &&
314 (scroll + max_choice < item_count())) {
315 /* Scroll menu up */
316 do_scroll(menu, &scroll, 1);
317
318 print_item(scroll+max_choice - 1,
319 max_choice - 1, FALSE);
320 } else
321 choice = MIN(choice + 1, max_choice - 1);
322
323 } else if (key == KEY_PPAGE) {
324 scrollok(menu, TRUE);
325 for (i = 0; (i < max_choice); i++) {
326 if (scroll > 0) {
327 do_scroll(menu, &scroll, -1);
328 print_item(scroll, 0, FALSE);
329 } else {
330 if (choice > 0)
331 choice--;
332 }
333 }
334
335 } else if (key == KEY_NPAGE) {
336 for (i = 0; (i < max_choice); i++) {
337 if (scroll + max_choice < item_count()) {
338 do_scroll(menu, &scroll, 1);
339 print_item(scroll+max_choice-1,
340 max_choice - 1, FALSE);
341 } else {
342 if (choice + 1 < max_choice)
343 choice++;
344 }
345 }
346 } else
347 choice = i;
348
349 print_item(scroll + choice, choice, TRUE);
350
351 print_arrows(dialog, item_count(), scroll,
352 box_y, box_x + item_x + 1, menu_height);
353
354 wnoutrefresh(dialog);
355 wrefresh(menu);
356
357 continue; /* wait for another key press */
358 }
359
360 switch (key) {
361 case KEY_LEFT:
362 case TAB:
363 case KEY_RIGHT:
364 button = ((key == KEY_LEFT ? --button : ++button) < 0)
365 ? 4 : (button > 4 ? 0 : button);
366
367 print_buttons(dialog, height, width, button);
368 wrefresh(menu);
369 break;
370 case ' ':
371 case 's':
372 case 'y':
373 case 'n':
374 case 'm':
375 case '/':
376 case 'h':
377 case '?':
378 case 'z':
379 case '\n':
380 /* save scroll info */
381 *s_scroll = scroll;
382 delwin(menu);
383 delwin(dialog);
384 item_set(scroll + choice);
385 item_set_selected(1);
386 switch (key) {
387 case 'h':
388 case '?':
389 return 2;
390 case 's':
391 case 'y':
392 return 5;
393 case 'n':
394 return 6;
395 case 'm':
396 return 7;
397 case ' ':
398 return 8;
399 case '/':
400 return 9;
401 case 'z':
402 return 10;
403 case '\n':
404 return button;
405 }
406 return 0;
407 case 'e':
408 case 'x':
409 key = KEY_ESC;
410 break;
411 case KEY_ESC:
412 key = on_key_esc(menu);
413 break;
414 case KEY_RESIZE:
415 on_key_resize();
416 delwin(menu);
417 delwin(dialog);
418 goto do_resize;
419 }
420 }
421 delwin(menu);
422 delwin(dialog);
423 return key; /* ESC pressed */
424}