Annotation of src/usr.bin/tmux/menu.c, Revision 1.21
1.21 ! nicm 1: /* $OpenBSD: menu.c,v 1.20 2020/04/13 15:55:51 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)
76: s = format_single(qitem, item->name, c, fs->s, fs->wl, fs->wp);
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)
94: s = format_single(qitem, cmd, c, fs->s, fs->wl, fs->wp);
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:
1.15 nicm 133: static int
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:
138: if (~md->flags & MENU_NOMOUSE)
139: return (MODE_MOUSE_ALL);
140: return (0);
141: }
142:
1.1 nicm 143: static void
144: menu_draw_cb(struct client *c, __unused struct screen_redraw_ctx *ctx0)
145: {
146: struct menu_data *md = c->overlay_data;
147: struct tty *tty = &c->tty;
148: struct screen *s = &md->s;
149: struct menu *menu = md->menu;
150: struct screen_write_ctx ctx;
1.13 nicm 151: u_int i, px = md->px, py = md->py;
1.1 nicm 152:
153: screen_write_start(&ctx, NULL, s);
154: screen_write_clearscreen(&ctx, 8);
155: screen_write_menu(&ctx, menu, md->choice);
156: screen_write_stop(&ctx);
157:
158: for (i = 0; i < screen_size_y(&md->s); i++)
159: tty_draw_line(tty, NULL, s, 0, i, menu->width + 4, px, py + i);
160: }
161:
162: static void
163: menu_free_cb(struct client *c)
164: {
165: struct menu_data *md = c->overlay_data;
166:
167: if (md->item != NULL)
1.10 nicm 168: cmdq_continue(md->item);
1.1 nicm 169:
1.3 nicm 170: if (md->cb != NULL)
171: md->cb(md->menu, UINT_MAX, KEYC_NONE, md->data);
172:
1.1 nicm 173: screen_free(&md->s);
174: menu_free(md->menu);
175: free(md);
176: }
177:
178: static int
179: menu_key_cb(struct client *c, struct key_event *event)
180: {
181: struct menu_data *md = c->overlay_data;
182: struct menu *menu = md->menu;
183: struct mouse_event *m = &event->m;
184: u_int i;
185: int count = menu->count, old = md->choice;
1.21 ! nicm 186: const char *name;
1.1 nicm 187: const struct menu_item *item;
1.21 ! nicm 188: struct cmdq_state *state;
! 189: enum cmd_parse_status status;
! 190: char *error;
1.1 nicm 191:
192: if (KEYC_IS_MOUSE(event->key)) {
1.12 nicm 193: if (md->flags & MENU_NOMOUSE) {
194: if (MOUSE_BUTTONS(m->b) != 0)
195: return (1);
1.1 nicm 196: return (0);
1.12 nicm 197: }
1.1 nicm 198: if (m->x < md->px ||
199: m->x > md->px + 4 + menu->width ||
200: m->y < md->py + 1 ||
201: m->y > md->py + 1 + count - 1) {
202: if (MOUSE_RELEASE(m->b))
203: return (1);
204: if (md->choice != -1) {
205: md->choice = -1;
206: c->flags |= CLIENT_REDRAWOVERLAY;
207: }
208: return (0);
209: }
210: if (MOUSE_RELEASE(m->b))
211: goto chosen;
1.7 nicm 212: md->choice = m->y - (md->py + 1);
1.1 nicm 213: if (md->choice != old)
214: c->flags |= CLIENT_REDRAWOVERLAY;
215: return (0);
216: }
1.11 nicm 217: for (i = 0; i < (u_int)count; i++) {
218: name = menu->items[i].name;
219: if (name == NULL || *name == '-')
220: continue;
221: if (event->key == menu->items[i].key) {
222: md->choice = i;
223: goto chosen;
224: }
225: }
1.1 nicm 226: switch (event->key) {
227: case KEYC_UP:
1.11 nicm 228: case 'k':
1.9 nicm 229: if (old == -1)
230: old = 0;
1.1 nicm 231: do {
232: if (md->choice == -1 || md->choice == 0)
233: md->choice = count - 1;
234: else
235: md->choice--;
1.9 nicm 236: name = menu->items[md->choice].name;
237: } while ((name == NULL || *name == '-') && md->choice != old);
1.1 nicm 238: c->flags |= CLIENT_REDRAWOVERLAY;
239: return (0);
240: case KEYC_DOWN:
1.11 nicm 241: case 'j':
1.9 nicm 242: if (old == -1)
243: old = 0;
1.1 nicm 244: do {
245: if (md->choice == -1 || md->choice == count - 1)
246: md->choice = 0;
1.9 nicm 247: else
248: md->choice++;
249: name = menu->items[md->choice].name;
250: } while ((name == NULL || *name == '-') && md->choice != old);
1.1 nicm 251: c->flags |= CLIENT_REDRAWOVERLAY;
252: return (0);
253: case '\r':
254: goto chosen;
255: case '\033': /* Escape */
256: case '\003': /* C-c */
257: case '\007': /* C-g */
258: case 'q':
259: return (1);
260: }
261: return (0);
262:
263: chosen:
264: if (md->choice == -1)
265: return (1);
266: item = &menu->items[md->choice];
1.9 nicm 267: if (item->name == NULL || *item->name == '-')
1.1 nicm 268: return (1);
269: if (md->cb != NULL) {
270: md->cb(md->menu, md->choice, item->key, md->data);
1.3 nicm 271: md->cb = NULL;
1.1 nicm 272: return (1);
273: }
1.5 nicm 274:
1.21 ! nicm 275: if (md->item != NULL)
! 276: event = cmdq_get_event(md->item);
! 277: else
! 278: event = NULL;
! 279: state = cmdq_new_state(&md->fs, event, 0);
! 280:
! 281: status = cmd_parse_and_append(item->command, NULL, c, state, &error);
! 282: if (status == CMD_PARSE_ERROR) {
! 283: cmdq_append(c, cmdq_get_error(error));
! 284: free(error);
1.1 nicm 285: }
1.21 ! nicm 286: cmdq_free_state(state);
! 287:
1.1 nicm 288: return (1);
289: }
290:
291: int
292: menu_display(struct menu *menu, int flags, struct cmdq_item *item, u_int px,
293: u_int py, struct client *c, struct cmd_find_state *fs, menu_choice_cb cb,
294: void *data)
295: {
296: struct menu_data *md;
297:
298: if (c->tty.sx < menu->width + 4 || c->tty.sy < menu->count + 2)
299: return (-1);
1.14 nicm 300: if (px + menu->width + 4 > c->tty.sx)
301: px = c->tty.sx - menu->width - 4;
302: if (py + menu->count + 2 > c->tty.sy)
303: py = c->tty.sy - menu->count - 2;
1.1 nicm 304:
305: md = xcalloc(1, sizeof *md);
306: md->item = item;
307: md->flags = flags;
308:
1.3 nicm 309: if (fs != NULL)
310: cmd_find_copy_state(&md->fs, fs);
1.1 nicm 311: screen_init(&md->s, menu->width + 4, menu->count + 2, 0);
312:
313: md->px = px;
314: md->py = py;
315:
316: md->menu = menu;
317: md->choice = -1;
318:
319: md->cb = cb;
320: md->data = data;
321:
1.15 nicm 322: server_client_set_overlay(c, 0, NULL, menu_mode_cb, menu_draw_cb,
323: menu_key_cb, menu_free_cb, md);
1.1 nicm 324: return (0);
325: }
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