Annotation of src/usr.bin/tmux/menu.c, Revision 1.27
1.27 ! nicm 1: /* $OpenBSD: menu.c,v 1.26 2020/05/16 15:06:03 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;
1.8 nicm 58: const char *key, *cmd;
59: char *s, *name;
1.1 nicm 60: u_int width;
1.8 nicm 61: int line;
62:
63: line = (item == NULL || item->name == NULL || *item->name == '\0');
64: if (line && menu->count == 0)
65: return;
1.1 nicm 66:
67: menu->items = xreallocarray(menu->items, menu->count + 1,
68: sizeof *menu->items);
69: new_item = &menu->items[menu->count++];
70: memset(new_item, 0, sizeof *new_item);
71:
1.8 nicm 72: if (line)
1.1 nicm 73: return;
1.8 nicm 74:
75: if (fs != NULL)
1.24 nicm 76: s = format_single_from_state(qitem, item->name, c, fs);
1.8 nicm 77: else
78: s = format_single(qitem, item->name, c, NULL, NULL, NULL);
79: if (*s == '\0') { /* no item if empty after format expanded */
1.1 nicm 80: menu->count--;
81: return;
82: }
1.9 nicm 83: if (*s != '-' && item->key != KEYC_UNKNOWN && item->key != KEYC_NONE) {
1.1 nicm 84: key = key_string_lookup_key(item->key);
1.8 nicm 85: xasprintf(&name, "%s#[default] #[align=right](%s)", s, key);
1.1 nicm 86: } else
1.8 nicm 87: xasprintf(&name, "%s", s);
88: new_item->name = name;
89: free(s);
90:
91: cmd = item->command;
92: if (cmd != NULL) {
93: if (fs != NULL)
1.24 nicm 94: s = format_single_from_state(qitem, cmd, c, fs);
1.8 nicm 95: else
96: s = format_single(qitem, cmd, c, NULL, NULL, NULL);
1.6 nicm 97: } else
1.8 nicm 98: s = NULL;
99: new_item->command = s;
1.1 nicm 100: new_item->key = item->key;
101:
102: width = format_width(new_item->name);
103: if (width > menu->width)
104: menu->width = width;
105: }
106:
107: struct menu *
1.8 nicm 108: menu_create(const char *title)
1.1 nicm 109: {
110: struct menu *menu;
111:
112: menu = xcalloc(1, sizeof *menu);
113: menu->title = xstrdup(title);
114:
115: return (menu);
116: }
117:
118: void
119: menu_free(struct menu *menu)
120: {
121: u_int i;
122:
123: for (i = 0; i < menu->count; i++) {
1.8 nicm 124: free((void *)menu->items[i].name);
125: free((void *)menu->items[i].command);
1.1 nicm 126: }
127: free(menu->items);
128:
1.8 nicm 129: free((void *)menu->title);
1.1 nicm 130: free(menu);
131: }
132:
1.27 ! nicm 133: static struct screen *
1.15 nicm 134: menu_mode_cb(struct client *c, __unused u_int *cx, __unused u_int *cy)
135: {
136: struct menu_data *md = c->overlay_data;
137:
1.27 ! nicm 138: return (&md->s);
1.15 nicm 139: }
140:
1.1 nicm 141: static void
142: menu_draw_cb(struct client *c, __unused struct screen_redraw_ctx *ctx0)
143: {
144: struct menu_data *md = c->overlay_data;
145: struct tty *tty = &c->tty;
146: struct screen *s = &md->s;
147: struct menu *menu = md->menu;
148: struct screen_write_ctx ctx;
1.13 nicm 149: u_int i, px = md->px, py = md->py;
1.22 nicm 150: struct grid_cell gc;
151:
1.25 nicm 152: style_apply(&gc, c->session->curw->window->options, "mode-style", NULL);
1.1 nicm 153:
1.27 ! nicm 154: screen_write_start(&ctx, s);
1.1 nicm 155: screen_write_clearscreen(&ctx, 8);
1.22 nicm 156: screen_write_menu(&ctx, menu, md->choice, &gc);
1.1 nicm 157: screen_write_stop(&ctx);
158:
1.27 ! nicm 159: for (i = 0; i < screen_size_y(&md->s); i++) {
! 160: tty_draw_line(tty, s, 0, i, menu->width + 4, px, py + i,
! 161: &grid_default_cell, NULL);
! 162: }
1.1 nicm 163: }
164:
165: static void
166: menu_free_cb(struct client *c)
167: {
168: struct menu_data *md = c->overlay_data;
169:
170: if (md->item != NULL)
1.10 nicm 171: cmdq_continue(md->item);
1.1 nicm 172:
1.3 nicm 173: if (md->cb != NULL)
174: md->cb(md->menu, UINT_MAX, KEYC_NONE, md->data);
175:
1.1 nicm 176: screen_free(&md->s);
177: menu_free(md->menu);
178: free(md);
179: }
180:
181: static int
182: menu_key_cb(struct client *c, struct key_event *event)
183: {
184: struct menu_data *md = c->overlay_data;
185: struct menu *menu = md->menu;
186: struct mouse_event *m = &event->m;
187: u_int i;
188: int count = menu->count, old = md->choice;
1.21 nicm 189: const char *name;
1.1 nicm 190: const struct menu_item *item;
1.21 nicm 191: struct cmdq_state *state;
192: enum cmd_parse_status status;
193: char *error;
1.1 nicm 194:
195: if (KEYC_IS_MOUSE(event->key)) {
1.12 nicm 196: if (md->flags & MENU_NOMOUSE) {
197: if (MOUSE_BUTTONS(m->b) != 0)
198: return (1);
1.1 nicm 199: return (0);
1.12 nicm 200: }
1.1 nicm 201: if (m->x < md->px ||
202: m->x > md->px + 4 + menu->width ||
203: m->y < md->py + 1 ||
204: m->y > md->py + 1 + count - 1) {
205: if (MOUSE_RELEASE(m->b))
206: return (1);
207: if (md->choice != -1) {
208: md->choice = -1;
209: c->flags |= CLIENT_REDRAWOVERLAY;
210: }
211: return (0);
212: }
213: if (MOUSE_RELEASE(m->b))
214: goto chosen;
1.7 nicm 215: md->choice = m->y - (md->py + 1);
1.1 nicm 216: if (md->choice != old)
217: c->flags |= CLIENT_REDRAWOVERLAY;
218: return (0);
219: }
1.11 nicm 220: for (i = 0; i < (u_int)count; i++) {
221: name = menu->items[i].name;
222: if (name == NULL || *name == '-')
223: continue;
224: if (event->key == menu->items[i].key) {
225: md->choice = i;
226: goto chosen;
227: }
228: }
1.1 nicm 229: switch (event->key) {
230: case KEYC_UP:
1.11 nicm 231: case 'k':
1.9 nicm 232: if (old == -1)
233: old = 0;
1.1 nicm 234: do {
235: if (md->choice == -1 || md->choice == 0)
236: md->choice = count - 1;
237: else
238: md->choice--;
1.9 nicm 239: name = menu->items[md->choice].name;
240: } while ((name == NULL || *name == '-') && md->choice != old);
1.1 nicm 241: c->flags |= CLIENT_REDRAWOVERLAY;
242: return (0);
1.26 nicm 243: case KEYC_BSPACE:
244: if (~md->flags & MENU_TAB)
245: break;
246: return (1);
247: case '\011': /* Tab */
248: if (~md->flags & MENU_TAB)
249: break;
250: if (md->choice == count - 1)
251: return (1);
252: /* FALLTHROUGH */
1.1 nicm 253: case KEYC_DOWN:
1.11 nicm 254: case 'j':
1.9 nicm 255: if (old == -1)
256: old = 0;
1.1 nicm 257: do {
258: if (md->choice == -1 || md->choice == count - 1)
259: md->choice = 0;
1.9 nicm 260: else
261: md->choice++;
262: name = menu->items[md->choice].name;
263: } while ((name == NULL || *name == '-') && md->choice != old);
1.1 nicm 264: c->flags |= CLIENT_REDRAWOVERLAY;
265: return (0);
1.26 nicm 266: case 'g':
267: case KEYC_PPAGE:
268: case '\002': /* C-b */
269: if (md->choice > 5)
270: md->choice -= 5;
271: else
272: md->choice = 0;
273: while (md->choice != count && (name == NULL || *name == '-'))
274: md->choice++;
275: if (md->choice == count)
276: md->choice = -1;
277: c->flags |= CLIENT_REDRAWOVERLAY;
278: break;
279: case 'G':
280: case KEYC_NPAGE:
281: if (md->choice > count - 6)
282: md->choice = count - 1;
283: else
284: md->choice += 5;
285: while (md->choice != -1 && (name == NULL || *name == '-'))
286: md->choice--;
287: c->flags |= CLIENT_REDRAWOVERLAY;
288: break;
289: case '\006': /* C-f */
290: break;
1.1 nicm 291: case '\r':
292: goto chosen;
293: case '\033': /* Escape */
294: case '\003': /* C-c */
295: case '\007': /* C-g */
296: case 'q':
297: return (1);
298: }
299: return (0);
300:
301: chosen:
302: if (md->choice == -1)
303: return (1);
304: item = &menu->items[md->choice];
1.9 nicm 305: if (item->name == NULL || *item->name == '-')
1.1 nicm 306: return (1);
307: if (md->cb != NULL) {
308: md->cb(md->menu, md->choice, item->key, md->data);
1.3 nicm 309: md->cb = NULL;
1.1 nicm 310: return (1);
311: }
1.5 nicm 312:
1.21 nicm 313: if (md->item != NULL)
314: event = cmdq_get_event(md->item);
315: else
316: event = NULL;
317: state = cmdq_new_state(&md->fs, event, 0);
318:
319: status = cmd_parse_and_append(item->command, NULL, c, state, &error);
320: if (status == CMD_PARSE_ERROR) {
321: cmdq_append(c, cmdq_get_error(error));
322: free(error);
1.1 nicm 323: }
1.21 nicm 324: cmdq_free_state(state);
325:
1.1 nicm 326: return (1);
327: }
328:
329: int
330: menu_display(struct menu *menu, int flags, struct cmdq_item *item, u_int px,
331: u_int py, struct client *c, struct cmd_find_state *fs, menu_choice_cb cb,
332: void *data)
333: {
334: struct menu_data *md;
1.23 nicm 335: u_int i;
336: const char *name;
1.1 nicm 337:
338: if (c->tty.sx < menu->width + 4 || c->tty.sy < menu->count + 2)
339: return (-1);
1.14 nicm 340: if (px + menu->width + 4 > c->tty.sx)
341: px = c->tty.sx - menu->width - 4;
342: if (py + menu->count + 2 > c->tty.sy)
343: py = c->tty.sy - menu->count - 2;
1.1 nicm 344:
345: md = xcalloc(1, sizeof *md);
346: md->item = item;
347: md->flags = flags;
348:
1.3 nicm 349: if (fs != NULL)
350: cmd_find_copy_state(&md->fs, fs);
1.1 nicm 351: screen_init(&md->s, menu->width + 4, menu->count + 2, 0);
1.27 ! nicm 352: if (~md->flags & MENU_NOMOUSE)
! 353: md->s.mode |= MODE_MOUSE_ALL;
1.1 nicm 354:
355: md->px = px;
356: md->py = py;
357:
358: md->menu = menu;
1.23 nicm 359: if (md->flags & MENU_NOMOUSE) {
360: for (i = 0; i < menu->count; i++) {
361: name = menu->items[i].name;
362: if (name != NULL && *name != '-')
363: break;
364: }
365: if (i != menu->count)
366: md->choice = i;
367: else
368: md->choice = -1;
369: } else
370: md->choice = -1;
1.1 nicm 371:
372: md->cb = cb;
373: md->data = data;
374:
1.15 nicm 375: server_client_set_overlay(c, 0, NULL, menu_mode_cb, menu_draw_cb,
376: menu_key_cb, menu_free_cb, md);
1.1 nicm 377: return (0);
378: }
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