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1.11 ! nicm 1: /* $OpenBSD: menu.c,v 1.10 2019/06/18 11:08:42 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;
1.8 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:
133: static void
134: menu_draw_cb(struct client *c, __unused struct screen_redraw_ctx *ctx0)
135: {
136: struct menu_data *md = c->overlay_data;
137: struct tty *tty = &c->tty;
138: struct screen *s = &md->s;
139: struct menu *menu = md->menu;
140: struct screen_write_ctx ctx;
141: u_int i, px, py;
142:
143: screen_write_start(&ctx, NULL, s);
144: screen_write_clearscreen(&ctx, 8);
145: screen_write_menu(&ctx, menu, md->choice);
146: screen_write_stop(&ctx);
147:
148: px = md->px;
149: py = md->py;
150:
151: for (i = 0; i < screen_size_y(&md->s); i++)
152: tty_draw_line(tty, NULL, s, 0, i, menu->width + 4, px, py + i);
153:
154: if (~md->flags & MENU_NOMOUSE)
155: tty_update_mode(tty, MODE_MOUSE_ALL, NULL);
156: }
157:
158: static void
159: menu_free_cb(struct client *c)
160: {
161: struct menu_data *md = c->overlay_data;
162:
163: if (md->item != NULL)
1.10 nicm 164: cmdq_continue(md->item);
1.1 nicm 165:
1.3 nicm 166: if (md->cb != NULL)
167: md->cb(md->menu, UINT_MAX, KEYC_NONE, md->data);
168:
1.1 nicm 169: screen_free(&md->s);
170: menu_free(md->menu);
171: free(md);
172: }
173:
174: static int
175: menu_key_cb(struct client *c, struct key_event *event)
176: {
177: struct menu_data *md = c->overlay_data;
178: struct menu *menu = md->menu;
179: struct mouse_event *m = &event->m;
180: u_int i;
181: int count = menu->count, old = md->choice;
182: const struct menu_item *item;
183: struct cmdq_item *new_item;
1.5 nicm 184: struct cmd_parse_result *pr;
1.9 nicm 185: const char *name;
1.1 nicm 186:
187: if (KEYC_IS_MOUSE(event->key)) {
188: if (md->flags & MENU_NOMOUSE)
189: return (0);
190: if (m->x < md->px ||
191: m->x > md->px + 4 + menu->width ||
192: m->y < md->py + 1 ||
193: m->y > md->py + 1 + count - 1) {
194: if (MOUSE_RELEASE(m->b))
195: return (1);
196: if (md->choice != -1) {
197: md->choice = -1;
198: c->flags |= CLIENT_REDRAWOVERLAY;
199: }
200: return (0);
201: }
202: if (MOUSE_RELEASE(m->b))
203: goto chosen;
1.7 nicm 204: md->choice = m->y - (md->py + 1);
1.1 nicm 205: if (md->choice != old)
206: c->flags |= CLIENT_REDRAWOVERLAY;
207: return (0);
208: }
1.11 ! nicm 209: for (i = 0; i < (u_int)count; i++) {
! 210: name = menu->items[i].name;
! 211: if (name == NULL || *name == '-')
! 212: continue;
! 213: if (event->key == menu->items[i].key) {
! 214: md->choice = i;
! 215: goto chosen;
! 216: }
! 217: }
1.1 nicm 218: switch (event->key) {
219: case KEYC_UP:
1.11 ! nicm 220: case 'k':
1.9 nicm 221: if (old == -1)
222: old = 0;
1.1 nicm 223: do {
224: if (md->choice == -1 || md->choice == 0)
225: md->choice = count - 1;
226: else
227: md->choice--;
1.9 nicm 228: name = menu->items[md->choice].name;
229: } while ((name == NULL || *name == '-') && md->choice != old);
1.1 nicm 230: c->flags |= CLIENT_REDRAWOVERLAY;
231: return (0);
232: case KEYC_DOWN:
1.11 ! nicm 233: case 'j':
1.9 nicm 234: if (old == -1)
235: old = 0;
1.1 nicm 236: do {
237: if (md->choice == -1 || md->choice == count - 1)
238: md->choice = 0;
1.9 nicm 239: else
240: md->choice++;
241: name = menu->items[md->choice].name;
242: } while ((name == NULL || *name == '-') && md->choice != old);
1.1 nicm 243: c->flags |= CLIENT_REDRAWOVERLAY;
244: return (0);
245: case '\r':
246: goto chosen;
247: case '\033': /* Escape */
248: case '\003': /* C-c */
249: case '\007': /* C-g */
250: case 'q':
251: return (1);
252: }
253: return (0);
254:
255: chosen:
256: if (md->choice == -1)
257: return (1);
258: item = &menu->items[md->choice];
1.9 nicm 259: if (item->name == NULL || *item->name == '-')
1.1 nicm 260: return (1);
261: if (md->cb != NULL) {
262: md->cb(md->menu, md->choice, item->key, md->data);
1.3 nicm 263: md->cb = NULL;
1.1 nicm 264: return (1);
265: }
1.5 nicm 266:
267: pr = cmd_parse_from_string(item->command, NULL);
268: switch (pr->status) {
269: case CMD_PARSE_EMPTY:
270: new_item = NULL;
271: break;
272: case CMD_PARSE_ERROR:
273: new_item = cmdq_get_error(pr->error);
274: free(pr->error);
275: cmdq_append(c, new_item);
276: break;
277: case CMD_PARSE_SUCCESS:
1.6 nicm 278: if (md->item != NULL)
279: m = &md->item->shared->mouse;
280: else
281: m = NULL;
282: new_item = cmdq_get_command(pr->cmdlist, &md->fs, m, 0);
1.5 nicm 283: cmd_list_free(pr->cmdlist);
284: cmdq_append(c, new_item);
285: break;
1.1 nicm 286: }
287: return (1);
288: }
289:
290: int
291: menu_display(struct menu *menu, int flags, struct cmdq_item *item, u_int px,
292: u_int py, struct client *c, struct cmd_find_state *fs, menu_choice_cb cb,
293: void *data)
294: {
295: struct menu_data *md;
296:
297: if (c->tty.sx < menu->width + 4 || c->tty.sy < menu->count + 2)
298: return (-1);
299:
300: md = xcalloc(1, sizeof *md);
301: md->item = item;
302: md->flags = flags;
303:
1.3 nicm 304: if (fs != NULL)
305: cmd_find_copy_state(&md->fs, fs);
1.1 nicm 306: screen_init(&md->s, menu->width + 4, menu->count + 2, 0);
307:
308: md->px = px;
309: md->py = py;
310:
311: md->menu = menu;
312: md->choice = -1;
313:
314: md->cb = cb;
315: md->data = data;
316:
317: server_client_set_overlay(c, 0, menu_draw_cb, menu_key_cb, menu_free_cb,
318: md);
319: return (0);
320: }