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1.3 ! nicm 1: /* $OpenBSD: menu.c,v 1.2 2019/05/12 07:27:08 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:
43: static void
44: menu_add_item(struct menu *menu, struct menu_item *item, struct client *c,
45: struct cmd_find_state *fs)
46: {
47: struct menu_item *new_item;
48: const char *key;
49: char *name;
50: u_int width;
51:
52: menu->items = xreallocarray(menu->items, menu->count + 1,
53: sizeof *menu->items);
54: new_item = &menu->items[menu->count++];
55: memset(new_item, 0, sizeof *new_item);
56:
57: if (item == NULL || *item->name == '\0') /* horizontal line */
58: return;
1.3 ! nicm 59: if (fs != NULL) {
! 60: name = format_single(NULL, item->name, c, fs->s, fs->wl,
! 61: fs->wp);
! 62: } else
! 63: name = xstrdup(item->name);
1.1 nicm 64: if (*name == '\0') { /* no item if empty after format expanded */
65: menu->count--;
66: return;
67: }
68: if (item->key != KEYC_UNKNOWN) {
69: key = key_string_lookup_key(item->key);
70: xasprintf(&new_item->name, "%s #[align=right](%s)", name, key);
71: } else
72: xasprintf(&new_item->name, "%s", name);
73: free(name);
74:
75: if (item->command != NULL)
76: new_item->command = xstrdup(item->command);
77: else
78: new_item->command = NULL;
79: new_item->key = item->key;
80:
81: width = format_width(new_item->name);
82: if (width > menu->width)
83: menu->width = width;
84: }
85:
86: static void
87: menu_parse_item(struct menu *menu, const char *s, struct client *c,
88: struct cmd_find_state *fs)
89: {
90: char *copy, *first;
91: const char *second, *third;
92: struct menu_item item;
93:
94: first = copy = xstrdup(s);
95: if ((second = format_skip(first, ",")) != NULL) {
96: *(char *)second++ = '\0';
97: if ((third = format_skip(second, ",")) != NULL) {
98: *(char *)third++ = '\0';
99:
100: item.name = first;
101: item.command = (char *)third;
102: item.key = key_string_lookup_string(second);
103: menu_add_item(menu, &item, c, fs);
104: }
105: }
106: free(copy);
107: }
108:
109: struct menu *
1.2 nicm 110: menu_create(const char *s, struct client *c, struct cmd_find_state *fs,
111: const char *title)
1.1 nicm 112: {
113: struct menu *menu;
114: char *copy, *string, *next;
115:
116: if (*s == '\0')
117: return (NULL);
118:
119: menu = xcalloc(1, sizeof *menu);
120: menu->title = xstrdup(title);
121:
122: copy = string = xstrdup(s);
123: do {
124: next = (char *)format_skip(string, "|");
125: if (next != NULL)
126: *next++ = '\0';
127: if (*string == '\0')
128: menu_add_item(menu, NULL, c, fs);
129: else
130: menu_parse_item(menu, string, c, fs);
131: string = next;
132: } while (next != NULL);
133: free(copy);
134:
135: return (menu);
136: }
137:
138: void
139: menu_free(struct menu *menu)
140: {
141: u_int i;
142:
143: for (i = 0; i < menu->count; i++) {
144: free(menu->items[i].name);
145: free(menu->items[i].command);
146: }
147: free(menu->items);
148:
149: free(menu->title);
150: free(menu);
151: }
152:
153: static void
154: menu_draw_cb(struct client *c, __unused struct screen_redraw_ctx *ctx0)
155: {
156: struct menu_data *md = c->overlay_data;
157: struct tty *tty = &c->tty;
158: struct screen *s = &md->s;
159: struct menu *menu = md->menu;
160: struct screen_write_ctx ctx;
161: u_int i, px, py;
162:
163: screen_write_start(&ctx, NULL, s);
164: screen_write_clearscreen(&ctx, 8);
165: screen_write_menu(&ctx, menu, md->choice);
166: screen_write_stop(&ctx);
167:
168: px = md->px;
169: py = md->py;
170:
171: for (i = 0; i < screen_size_y(&md->s); i++)
172: tty_draw_line(tty, NULL, s, 0, i, menu->width + 4, px, py + i);
173:
174: if (~md->flags & MENU_NOMOUSE)
175: tty_update_mode(tty, MODE_MOUSE_ALL, NULL);
176: }
177:
178: static void
179: menu_free_cb(struct client *c)
180: {
181: struct menu_data *md = c->overlay_data;
182:
183: if (md->item != NULL)
184: md->item->flags &= ~CMDQ_WAITING;
185:
1.3 ! nicm 186: if (md->cb != NULL)
! 187: md->cb(md->menu, UINT_MAX, KEYC_NONE, md->data);
! 188:
1.1 nicm 189: screen_free(&md->s);
190: menu_free(md->menu);
191: free(md);
192: }
193:
194: static enum cmd_retval
195: menu_error_cb(struct cmdq_item *item, void *data)
196: {
197: char *error = data;
198:
199: cmdq_error(item, "%s", error);
200: free(error);
201:
202: return (CMD_RETURN_NORMAL);
203: }
204:
205: static int
206: menu_key_cb(struct client *c, struct key_event *event)
207: {
208: struct menu_data *md = c->overlay_data;
209: struct menu *menu = md->menu;
210: struct mouse_event *m = &event->m;
211: u_int i;
212: int count = menu->count, old = md->choice;
213: const struct menu_item *item;
214: struct cmd_list *cmdlist;
215: struct cmdq_item *new_item;
216: char *cause;
217:
218: if (KEYC_IS_MOUSE(event->key)) {
219: if (md->flags & MENU_NOMOUSE)
220: return (0);
221: if (m->x < md->px ||
222: m->x > md->px + 4 + menu->width ||
223: m->y < md->py + 1 ||
224: m->y > md->py + 1 + count - 1) {
225: if (MOUSE_RELEASE(m->b))
226: return (1);
227: if (md->choice != -1) {
228: md->choice = -1;
229: c->flags |= CLIENT_REDRAWOVERLAY;
230: }
231: return (0);
232: }
233: md->choice = m->y - (md->py + 1);
234: if (MOUSE_RELEASE(m->b))
235: goto chosen;
236: if (md->choice != old)
237: c->flags |= CLIENT_REDRAWOVERLAY;
238: return (0);
239: }
240: switch (event->key) {
241: case KEYC_UP:
242: do {
243: if (md->choice == -1 || md->choice == 0)
244: md->choice = count - 1;
245: else
246: md->choice--;
247: } while (menu->items[md->choice].name == NULL);
248: c->flags |= CLIENT_REDRAWOVERLAY;
249: return (0);
250: case KEYC_DOWN:
251: do {
252: if (md->choice == -1 || md->choice == count - 1)
253: md->choice = 0;
254: else
255: md->choice++;
256: } while (menu->items[md->choice].name == NULL);
257: c->flags |= CLIENT_REDRAWOVERLAY;
258: return (0);
259: case '\r':
260: goto chosen;
261: case '\033': /* Escape */
262: case '\003': /* C-c */
263: case '\007': /* C-g */
264: case 'q':
265: return (1);
266: }
267: for (i = 0; i < (u_int)count; i++) {
268: if (event->key == menu->items[i].key) {
269: md->choice = i;
270: goto chosen;
271: }
272: }
273: return (0);
274:
275: chosen:
276: if (md->choice == -1)
277: return (1);
278: item = &menu->items[md->choice];
279: if (item->name == NULL)
280: return (1);
281: if (md->cb != NULL) {
282: md->cb(md->menu, md->choice, item->key, md->data);
1.3 ! nicm 283: md->cb = NULL;
1.1 nicm 284: return (1);
285: }
286: cmdlist = cmd_string_parse(item->command, NULL, 0, &cause);
287: if (cmdlist == NULL && cause != NULL)
288: new_item = cmdq_get_callback(menu_error_cb, cause);
289: else if (cmdlist == NULL)
290: new_item = NULL;
291: else {
292: new_item = cmdq_get_command(cmdlist, &md->fs, NULL, 0);
293: cmd_list_free(cmdlist);
294: }
295: if (new_item != NULL) {
296: if (md->item != NULL)
297: cmdq_insert_after(md->item, new_item);
298: else
299: cmdq_append(c, new_item);
300: }
301: return (1);
302: }
303:
304: int
305: menu_display(struct menu *menu, int flags, struct cmdq_item *item, u_int px,
306: u_int py, struct client *c, struct cmd_find_state *fs, menu_choice_cb cb,
307: void *data)
308: {
309: struct menu_data *md;
310:
311: if (c->tty.sx < menu->width + 4 || c->tty.sy < menu->count + 2)
312: return (-1);
313:
314: md = xcalloc(1, sizeof *md);
315: md->item = item;
316: md->flags = flags;
317:
1.3 ! nicm 318: if (fs != NULL)
! 319: cmd_find_copy_state(&md->fs, fs);
1.1 nicm 320: screen_init(&md->s, menu->width + 4, menu->count + 2, 0);
321:
322: md->px = px;
323: md->py = py;
324:
325: md->menu = menu;
326: md->choice = -1;
327:
328: md->cb = cb;
329: md->data = data;
330:
331: server_client_set_overlay(c, 0, menu_draw_cb, menu_key_cb, menu_free_cb,
332: md);
333: return (0);
334: }