Annotation of src/usr.bin/tmux/menu.c, Revision 1.46
1.46 ! nicm 1: /* $OpenBSD: menu.c,v 1.45 2022/05/31 10:22:42 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2019 Nicholas Marriott <nicholas.marriott@gmail.com>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
21: #include <stdlib.h>
22: #include <string.h>
23:
24: #include "tmux.h"
25:
26: struct menu_data {
27: struct cmdq_item *item;
28: int flags;
29:
30: struct cmd_find_state fs;
31: struct screen s;
32:
33: u_int px;
34: u_int py;
35:
36: struct menu *menu;
37: int choice;
38:
39: menu_choice_cb cb;
40: void *data;
41: };
42:
1.8 nicm 43: void
44: menu_add_items(struct menu *menu, const struct menu_item *items,
45: struct cmdq_item *qitem, struct client *c, struct cmd_find_state *fs)
46: {
47: const struct menu_item *loop;
48:
49: for (loop = items; loop->name != NULL; loop++)
50: menu_add_item(menu, loop, qitem, c, fs);
51: }
52:
53: void
54: menu_add_item(struct menu *menu, const struct menu_item *item,
1.6 nicm 55: struct cmdq_item *qitem, struct client *c, struct cmd_find_state *fs)
1.1 nicm 56: {
57: struct menu_item *new_item;
1.40 nicm 58: const char *key = NULL, *cmd, *suffix = "";
1.45 nicm 59: char *s, *trimmed, *name;
1.40 nicm 60: u_int width, max_width;
1.8 nicm 61: int line;
1.40 nicm 62: size_t keylen, slen;
1.8 nicm 63:
64: line = (item == NULL || item->name == NULL || *item->name == '\0');
65: if (line && menu->count == 0)
66: return;
1.1 nicm 67:
68: menu->items = xreallocarray(menu->items, menu->count + 1,
69: sizeof *menu->items);
70: new_item = &menu->items[menu->count++];
71: memset(new_item, 0, sizeof *new_item);
72:
1.8 nicm 73: if (line)
1.1 nicm 74: return;
1.8 nicm 75:
76: if (fs != NULL)
1.24 nicm 77: s = format_single_from_state(qitem, item->name, c, fs);
1.8 nicm 78: else
79: s = format_single(qitem, item->name, c, NULL, NULL, NULL);
80: if (*s == '\0') { /* no item if empty after format expanded */
1.1 nicm 81: menu->count--;
82: return;
83: }
1.40 nicm 84: max_width = c->tty.sx - 4;
85:
86: slen = strlen(s);
1.9 nicm 87: if (*s != '-' && item->key != KEYC_UNKNOWN && item->key != KEYC_NONE) {
1.29 nicm 88: key = key_string_lookup_key(item->key, 0);
1.40 nicm 89: keylen = strlen(key) + 3; /* 3 = space and two brackets */
90:
91: /*
1.41 nicm 92: * Add the key if it is shorter than a quarter of the available
93: * space or there is space for the entire item text and the
94: * key.
1.40 nicm 95: */
1.41 nicm 96: if (keylen <= max_width / 4)
97: max_width -= keylen;
98: else if (keylen >= max_width || slen >= max_width - keylen)
1.40 nicm 99: key = NULL;
100: }
101:
1.41 nicm 102: if (slen > max_width) {
103: max_width--;
104: suffix = ">";
105: }
1.45 nicm 106: trimmed = format_trim_right(s, max_width);
107: if (key != NULL) {
108: xasprintf(&name, "%s%s#[default] #[align=right](%s)",
109: trimmed, suffix, key);
110: } else
111: xasprintf(&name, "%s%s", trimmed, suffix);
112: free(trimmed);
1.41 nicm 113:
1.8 nicm 114: new_item->name = name;
115: free(s);
116:
117: cmd = item->command;
118: if (cmd != NULL) {
119: if (fs != NULL)
1.24 nicm 120: s = format_single_from_state(qitem, cmd, c, fs);
1.8 nicm 121: else
122: s = format_single(qitem, cmd, c, NULL, NULL, NULL);
1.6 nicm 123: } else
1.8 nicm 124: s = NULL;
125: new_item->command = s;
1.1 nicm 126: new_item->key = item->key;
127:
128: width = format_width(new_item->name);
1.39 nicm 129: if (*new_item->name == '-')
130: width--;
1.1 nicm 131: if (width > menu->width)
132: menu->width = width;
133: }
134:
135: struct menu *
1.8 nicm 136: menu_create(const char *title)
1.1 nicm 137: {
138: struct menu *menu;
139:
140: menu = xcalloc(1, sizeof *menu);
141: menu->title = xstrdup(title);
1.30 nicm 142: menu->width = format_width(title);
1.1 nicm 143:
144: return (menu);
145: }
146:
147: void
148: menu_free(struct menu *menu)
149: {
150: u_int i;
151:
152: for (i = 0; i < menu->count; i++) {
1.8 nicm 153: free((void *)menu->items[i].name);
154: free((void *)menu->items[i].command);
1.1 nicm 155: }
156: free(menu->items);
157:
1.8 nicm 158: free((void *)menu->title);
1.1 nicm 159: free(menu);
160: }
161:
1.35 nicm 162: struct screen *
1.46 ! nicm 163: menu_mode_cb(__unused struct client *c, void *data, u_int *cx, u_int *cy)
1.15 nicm 164: {
1.35 nicm 165: struct menu_data *md = data;
1.46 ! nicm 166:
! 167: *cx = md->px + 2;
! 168: if (md->choice == -1)
! 169: *cy = md->py;
! 170: else
! 171: *cy = md->py + 1 + md->choice;
1.15 nicm 172:
1.27 nicm 173: return (&md->s);
1.15 nicm 174: }
175:
1.38 nicm 176: /* Return parts of the input range which are not obstructed by the menu. */
177: void
178: menu_check_cb(__unused struct client *c, void *data, u_int px, u_int py,
179: u_int nx, struct overlay_ranges *r)
1.35 nicm 180: {
181: struct menu_data *md = data;
182: struct menu *menu = md->menu;
183:
1.38 nicm 184: server_client_overlay_range(md->px, md->py, menu->width + 4,
185: menu->count + 2, px, py, nx, r);
1.35 nicm 186: }
187:
188: void
189: menu_draw_cb(struct client *c, void *data,
190: __unused struct screen_redraw_ctx *rctx)
1.1 nicm 191: {
1.35 nicm 192: struct menu_data *md = data;
1.1 nicm 193: struct tty *tty = &c->tty;
194: struct screen *s = &md->s;
195: struct menu *menu = md->menu;
196: struct screen_write_ctx ctx;
1.13 nicm 197: u_int i, px = md->px, py = md->py;
1.22 nicm 198: struct grid_cell gc;
199:
1.25 nicm 200: style_apply(&gc, c->session->curw->window->options, "mode-style", NULL);
1.1 nicm 201:
1.27 nicm 202: screen_write_start(&ctx, s);
1.1 nicm 203: screen_write_clearscreen(&ctx, 8);
1.22 nicm 204: screen_write_menu(&ctx, menu, md->choice, &gc);
1.1 nicm 205: screen_write_stop(&ctx);
206:
1.27 nicm 207: for (i = 0; i < screen_size_y(&md->s); i++) {
208: tty_draw_line(tty, s, 0, i, menu->width + 4, px, py + i,
209: &grid_default_cell, NULL);
210: }
1.1 nicm 211: }
212:
1.35 nicm 213: void
214: menu_free_cb(__unused struct client *c, void *data)
1.1 nicm 215: {
1.35 nicm 216: struct menu_data *md = data;
1.1 nicm 217:
218: if (md->item != NULL)
1.10 nicm 219: cmdq_continue(md->item);
1.1 nicm 220:
1.3 nicm 221: if (md->cb != NULL)
222: md->cb(md->menu, UINT_MAX, KEYC_NONE, md->data);
223:
1.1 nicm 224: screen_free(&md->s);
225: menu_free(md->menu);
226: free(md);
227: }
228:
1.35 nicm 229: int
230: menu_key_cb(struct client *c, void *data, struct key_event *event)
1.1 nicm 231: {
1.35 nicm 232: struct menu_data *md = data;
1.1 nicm 233: struct menu *menu = md->menu;
234: struct mouse_event *m = &event->m;
235: u_int i;
236: int count = menu->count, old = md->choice;
1.31 nicm 237: const char *name = NULL;
1.1 nicm 238: const struct menu_item *item;
1.21 nicm 239: struct cmdq_state *state;
240: enum cmd_parse_status status;
241: char *error;
1.1 nicm 242:
243: if (KEYC_IS_MOUSE(event->key)) {
1.12 nicm 244: if (md->flags & MENU_NOMOUSE) {
1.44 nicm 245: if (MOUSE_BUTTONS(m->b) != MOUSE_BUTTON_1)
1.12 nicm 246: return (1);
1.1 nicm 247: return (0);
1.12 nicm 248: }
1.1 nicm 249: if (m->x < md->px ||
250: m->x > md->px + 4 + menu->width ||
251: m->y < md->py + 1 ||
252: m->y > md->py + 1 + count - 1) {
1.32 nicm 253: if (~md->flags & MENU_STAYOPEN) {
254: if (MOUSE_RELEASE(m->b))
255: return (1);
256: } else {
257: if (!MOUSE_RELEASE(m->b) &&
1.44 nicm 258: !MOUSE_WHEEL(m->b) &&
1.32 nicm 259: !MOUSE_DRAG(m->b))
260: return (1);
261: }
1.1 nicm 262: if (md->choice != -1) {
263: md->choice = -1;
264: c->flags |= CLIENT_REDRAWOVERLAY;
265: }
266: return (0);
267: }
1.32 nicm 268: if (~md->flags & MENU_STAYOPEN) {
269: if (MOUSE_RELEASE(m->b))
270: goto chosen;
271: } else {
1.44 nicm 272: if (!MOUSE_WHEEL(m->b) && !MOUSE_DRAG(m->b))
1.32 nicm 273: goto chosen;
274: }
1.7 nicm 275: md->choice = m->y - (md->py + 1);
1.1 nicm 276: if (md->choice != old)
277: c->flags |= CLIENT_REDRAWOVERLAY;
278: return (0);
279: }
1.11 nicm 280: for (i = 0; i < (u_int)count; i++) {
281: name = menu->items[i].name;
282: if (name == NULL || *name == '-')
283: continue;
284: if (event->key == menu->items[i].key) {
285: md->choice = i;
286: goto chosen;
287: }
288: }
1.29 nicm 289: switch (event->key & ~KEYC_MASK_FLAGS) {
1.1 nicm 290: case KEYC_UP:
1.11 nicm 291: case 'k':
1.9 nicm 292: if (old == -1)
293: old = 0;
1.1 nicm 294: do {
295: if (md->choice == -1 || md->choice == 0)
296: md->choice = count - 1;
297: else
298: md->choice--;
1.9 nicm 299: name = menu->items[md->choice].name;
300: } while ((name == NULL || *name == '-') && md->choice != old);
1.1 nicm 301: c->flags |= CLIENT_REDRAWOVERLAY;
302: return (0);
1.26 nicm 303: case KEYC_BSPACE:
304: if (~md->flags & MENU_TAB)
305: break;
306: return (1);
307: case '\011': /* Tab */
308: if (~md->flags & MENU_TAB)
309: break;
310: if (md->choice == count - 1)
311: return (1);
312: /* FALLTHROUGH */
1.1 nicm 313: case KEYC_DOWN:
1.11 nicm 314: case 'j':
1.9 nicm 315: if (old == -1)
316: old = 0;
1.1 nicm 317: do {
318: if (md->choice == -1 || md->choice == count - 1)
319: md->choice = 0;
1.9 nicm 320: else
321: md->choice++;
322: name = menu->items[md->choice].name;
323: } while ((name == NULL || *name == '-') && md->choice != old);
1.1 nicm 324: c->flags |= CLIENT_REDRAWOVERLAY;
325: return (0);
1.26 nicm 326: case 'g':
327: case KEYC_PPAGE:
328: case '\002': /* C-b */
329: if (md->choice > 5)
330: md->choice -= 5;
331: else
332: md->choice = 0;
333: while (md->choice != count && (name == NULL || *name == '-'))
334: md->choice++;
335: if (md->choice == count)
336: md->choice = -1;
337: c->flags |= CLIENT_REDRAWOVERLAY;
338: break;
339: case 'G':
340: case KEYC_NPAGE:
341: if (md->choice > count - 6)
342: md->choice = count - 1;
343: else
344: md->choice += 5;
345: while (md->choice != -1 && (name == NULL || *name == '-'))
346: md->choice--;
347: c->flags |= CLIENT_REDRAWOVERLAY;
348: break;
349: case '\006': /* C-f */
350: break;
1.1 nicm 351: case '\r':
352: goto chosen;
353: case '\033': /* Escape */
354: case '\003': /* C-c */
355: case '\007': /* C-g */
356: case 'q':
357: return (1);
358: }
359: return (0);
360:
361: chosen:
362: if (md->choice == -1)
363: return (1);
364: item = &menu->items[md->choice];
1.33 nicm 365: if (item->name == NULL || *item->name == '-') {
366: if (md->flags & MENU_STAYOPEN)
367: return (0);
1.1 nicm 368: return (1);
1.33 nicm 369: }
1.1 nicm 370: if (md->cb != NULL) {
371: md->cb(md->menu, md->choice, item->key, md->data);
1.3 nicm 372: md->cb = NULL;
1.1 nicm 373: return (1);
374: }
1.5 nicm 375:
1.21 nicm 376: if (md->item != NULL)
377: event = cmdq_get_event(md->item);
378: else
379: event = NULL;
380: state = cmdq_new_state(&md->fs, event, 0);
381:
382: status = cmd_parse_and_append(item->command, NULL, c, state, &error);
383: if (status == CMD_PARSE_ERROR) {
384: cmdq_append(c, cmdq_get_error(error));
385: free(error);
1.1 nicm 386: }
1.21 nicm 387: cmdq_free_state(state);
388:
1.1 nicm 389: return (1);
390: }
391:
1.35 nicm 392: struct menu_data *
393: menu_prepare(struct menu *menu, int flags, struct cmdq_item *item, u_int px,
1.1 nicm 394: u_int py, struct client *c, struct cmd_find_state *fs, menu_choice_cb cb,
395: void *data)
396: {
397: struct menu_data *md;
1.23 nicm 398: u_int i;
399: const char *name;
1.1 nicm 400:
401: if (c->tty.sx < menu->width + 4 || c->tty.sy < menu->count + 2)
1.35 nicm 402: return (NULL);
1.14 nicm 403: if (px + menu->width + 4 > c->tty.sx)
404: px = c->tty.sx - menu->width - 4;
405: if (py + menu->count + 2 > c->tty.sy)
406: py = c->tty.sy - menu->count - 2;
1.1 nicm 407:
408: md = xcalloc(1, sizeof *md);
409: md->item = item;
410: md->flags = flags;
411:
1.3 nicm 412: if (fs != NULL)
413: cmd_find_copy_state(&md->fs, fs);
1.1 nicm 414: screen_init(&md->s, menu->width + 4, menu->count + 2, 0);
1.27 nicm 415: if (~md->flags & MENU_NOMOUSE)
1.37 nicm 416: md->s.mode |= (MODE_MOUSE_ALL|MODE_MOUSE_BUTTON);
1.28 nicm 417: md->s.mode &= ~MODE_CURSOR;
1.1 nicm 418:
419: md->px = px;
420: md->py = py;
421:
422: md->menu = menu;
1.23 nicm 423: if (md->flags & MENU_NOMOUSE) {
424: for (i = 0; i < menu->count; i++) {
425: name = menu->items[i].name;
426: if (name != NULL && *name != '-')
427: break;
428: }
429: if (i != menu->count)
430: md->choice = i;
431: else
432: md->choice = -1;
433: } else
434: md->choice = -1;
1.1 nicm 435:
436: md->cb = cb;
437: md->data = data;
1.35 nicm 438: return (md);
439: }
440:
441: int
442: menu_display(struct menu *menu, int flags, struct cmdq_item *item, u_int px,
443: u_int py, struct client *c, struct cmd_find_state *fs, menu_choice_cb cb,
444: void *data)
445: {
446: struct menu_data *md;
1.1 nicm 447:
1.35 nicm 448: md = menu_prepare(menu, flags, item, px, py, c, fs, cb, data);
449: if (md == NULL)
450: return (-1);
1.15 nicm 451: server_client_set_overlay(c, 0, NULL, menu_mode_cb, menu_draw_cb,
1.34 nicm 452: menu_key_cb, menu_free_cb, NULL, md);
1.1 nicm 453: return (0);
454: }
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