xref: /openbsd/usr.bin/tmux/cmd-swap-window.c (revision 4cfece93)
1 /* $OpenBSD: cmd-swap-window.c,v 1.27 2020/04/13 10:59:58 nicm Exp $ */
2 
3 /*
4  * Copyright (c) 2007 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 
23 #include "tmux.h"
24 
25 /*
26  * Swap one window with another.
27  */
28 
29 static enum cmd_retval	cmd_swap_window_exec(struct cmd *, struct cmdq_item *);
30 
31 const struct cmd_entry cmd_swap_window_entry = {
32 	.name = "swap-window",
33 	.alias = "swapw",
34 
35 	.args = { "ds:t:", 0, 0 },
36 	.usage = "[-d] " CMD_SRCDST_WINDOW_USAGE,
37 
38 	.source = { 's', CMD_FIND_WINDOW, CMD_FIND_DEFAULT_MARKED },
39 	.target = { 't', CMD_FIND_WINDOW, 0 },
40 
41 	.flags = 0,
42 	.exec = cmd_swap_window_exec
43 };
44 
45 static enum cmd_retval
46 cmd_swap_window_exec(struct cmd *self, struct cmdq_item *item)
47 {
48 	struct args		*args = cmd_get_args(self);
49 	struct cmd_find_state	*source = cmdq_get_source(item);
50 	struct cmd_find_state	*target = cmdq_get_target(item);
51 	struct session		*src = source->s, *dst = target->s;
52 	struct session_group	*sg_src, *sg_dst;
53 	struct winlink		*wl_src = source->wl, *wl_dst = target->wl;
54 	struct window		*w_src, *w_dst;
55 
56 	sg_src = session_group_contains(src);
57 	sg_dst = session_group_contains(dst);
58 
59 	if (src != dst &&
60 	    sg_src != NULL &&
61 	    sg_dst != NULL &&
62 	    sg_src == sg_dst) {
63 		cmdq_error(item, "can't move window, sessions are grouped");
64 		return (CMD_RETURN_ERROR);
65 	}
66 
67 	if (wl_dst->window == wl_src->window)
68 		return (CMD_RETURN_NORMAL);
69 
70 	w_dst = wl_dst->window;
71 	TAILQ_REMOVE(&w_dst->winlinks, wl_dst, wentry);
72 	w_src = wl_src->window;
73 	TAILQ_REMOVE(&w_src->winlinks, wl_src, wentry);
74 
75 	wl_dst->window = w_src;
76 	TAILQ_INSERT_TAIL(&w_src->winlinks, wl_dst, wentry);
77 	wl_src->window = w_dst;
78 	TAILQ_INSERT_TAIL(&w_dst->winlinks, wl_src, wentry);
79 
80 	if (args_has(args, 'd')) {
81 		session_select(dst, wl_dst->idx);
82 		if (src != dst)
83 			session_select(src, wl_src->idx);
84 	}
85 	session_group_synchronize_from(src);
86 	server_redraw_session_group(src);
87 	if (src != dst) {
88 		session_group_synchronize_from(dst);
89 		server_redraw_session_group(dst);
90 	}
91 	recalculate_sizes();
92 
93 	return (CMD_RETURN_NORMAL);
94 }
95