xref: /openbsd-src/usr.bin/tmux/cmd-display-menu.c (revision 99fd087599a8791921855f21bd7e36130f39aadc)
1 /* $OpenBSD: cmd-display-menu.c,v 1.4 2019/05/28 07:18:42 nicm Exp $ */
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 /*
27  * Display a menu on a client.
28  */
29 
30 static enum cmd_retval	cmd_display_menu_exec(struct cmd *,
31 			    struct cmdq_item *);
32 
33 const struct cmd_entry cmd_display_menu_entry = {
34 	.name = "display-menu",
35 	.alias = "menu",
36 
37 	.args = { "c:t:T:x:y:", 1, -1 },
38 	.usage = "[-c target-client] " CMD_TARGET_PANE_USAGE " [-T title] "
39 		 "[-x position] [-y position] name key command ...",
40 
41 	.target = { 't', CMD_FIND_PANE, 0 },
42 
43 	.flags = CMD_AFTERHOOK,
44 	.exec = cmd_display_menu_exec
45 };
46 
47 static enum cmd_retval
48 cmd_display_menu_exec(struct cmd *self, struct cmdq_item *item)
49 {
50 	struct args		*args = self->args;
51 	struct client		*c;
52 	struct session		*s = item->target.s;
53 	struct winlink		*wl = item->target.wl;
54 	struct window_pane	*wp = item->target.wp;
55 	struct cmd_find_state	*fs = &item->target;
56 	struct menu		*menu = NULL;
57 	struct style_range	*sr;
58 	struct menu_item	 menu_item;
59 	const char		*xp, *yp, *key;
60 	char			*title, *name;
61 	int			 at, flags, i;
62 	u_int			 px, py, ox, oy, sx, sy;
63 
64 	if ((c = cmd_find_client(item, args_get(args, 'c'), 0)) == NULL)
65 		return (CMD_RETURN_ERROR);
66 	if (c->overlay_draw != NULL)
67 		return (CMD_RETURN_NORMAL);
68 	at = status_at_line(c);
69 
70 	if (args_has(args, 'T'))
71 		title = format_single(NULL, args_get(args, 'T'), c, s, wl, wp);
72 	else
73 		title = xstrdup("");
74 
75 	menu = menu_create(title);
76 
77 	for (i = 0; i != args->argc; /* nothing */) {
78 		name = args->argv[i++];
79 		if (*name == '\0') {
80 			menu_add_item(menu, NULL, item, c, fs);
81 			continue;
82 		}
83 
84 		if (args->argc - i < 2) {
85 			cmdq_error(item, "not enough arguments");
86 			free(title);
87 			menu_free(menu);
88 			return (CMD_RETURN_ERROR);
89 		}
90 		key = args->argv[i++];
91 
92 		menu_item.name = name;
93 		menu_item.key = key_string_lookup_string(key);
94 		menu_item.command = args->argv[i++];
95 
96 		menu_add_item(menu, &menu_item, item, c, fs);
97 	}
98 	free(title);
99 	if (menu == NULL) {
100 		cmdq_error(item, "invalid menu arguments");
101 		return (CMD_RETURN_ERROR);
102 	}
103 	if (menu->count == 0) {
104 		menu_free(menu);
105 		return (CMD_RETURN_NORMAL);
106 	}
107 
108 	xp = args_get(args, 'x');
109 	if (xp == NULL)
110 		px = 0;
111 	else if (strcmp(xp, "R") == 0)
112 		px = c->tty.sx - 1;
113 	else if (strcmp(xp, "P") == 0) {
114 		tty_window_offset(&c->tty, &ox, &oy, &sx, &sy);
115 		if (wp->xoff >= ox)
116 			px = wp->xoff - ox;
117 		else
118 			px = 0;
119 	} else if (strcmp(xp, "M") == 0 && item->shared->mouse.valid) {
120 		if (item->shared->mouse.x > (menu->width + 4) / 2)
121 			px = item->shared->mouse.x - (menu->width + 4) / 2;
122 		else
123 			px = 0;
124 	}
125 	else if (strcmp(xp, "W") == 0) {
126 		if (at == -1)
127 			px = 0;
128 		else {
129 			TAILQ_FOREACH(sr, &c->status.entries[0].ranges, entry) {
130 				if (sr->type != STYLE_RANGE_WINDOW)
131 					continue;
132 				if (sr->argument == (u_int)wl->idx)
133 					break;
134 			}
135 			if (sr != NULL)
136 				px = sr->start;
137 			else
138 				px = 0;
139 		}
140 	} else
141 		px = strtoul(xp, NULL, 10);
142 	if (px + menu->width + 4 >= c->tty.sx)
143 		px = c->tty.sx - menu->width - 4;
144 
145 	yp = args_get(args, 'y');
146 	if (yp == NULL)
147 		py = 0;
148 	else if (strcmp(yp, "P") == 0) {
149 		tty_window_offset(&c->tty, &ox, &oy, &sx, &sy);
150 		if (wp->yoff + wp->sy >= oy)
151 			py = wp->yoff + wp->sy - oy;
152 		else
153 			py = 0;
154 	} else if (strcmp(yp, "M") == 0 && item->shared->mouse.valid)
155 		py = item->shared->mouse.y + menu->count + 2;
156 	else if (strcmp(yp, "S") == 0) {
157 		if (at == -1)
158 			py = c->tty.sy;
159 		else if (at == 0)
160 			py = status_line_size(c) + menu->count + 2;
161 		else
162 			py = at;
163 	} else
164 		py = strtoul(yp, NULL, 10);
165 	if (py < menu->count + 2)
166 		py = 0;
167 	else
168 		py -= menu->count + 2;
169 	if (py + menu->count + 2 >= c->tty.sy)
170 		py = c->tty.sy - menu->count - 2;
171 
172 	flags = 0;
173 	if (!item->shared->mouse.valid)
174 		flags |= MENU_NOMOUSE;
175 	if (menu_display(menu, flags, item, px, py, c, fs, NULL, NULL) != 0)
176 		return (CMD_RETURN_NORMAL);
177 	return (CMD_RETURN_WAIT);
178 }
179