1/* $Id: cmd-swap-pane.c,v 1.1.1.2 2011/08/17 18:40:04 jmmv Exp $ */
2
3/*
4 * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
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 two panes.
27 */
28
29void	cmd_swap_pane_key_binding(struct cmd *, int);
30int	cmd_swap_pane_exec(struct cmd *, struct cmd_ctx *);
31
32const struct cmd_entry cmd_swap_pane_entry = {
33	"swap-pane", "swapp",
34	"dDs:t:U", 0, 0,
35	"[-dDU] " CMD_SRCDST_PANE_USAGE,
36	0,
37	cmd_swap_pane_key_binding,
38	NULL,
39	cmd_swap_pane_exec
40};
41
42void
43cmd_swap_pane_key_binding(struct cmd *self, int key)
44{
45	self->args = args_create(0);
46	if (key == '{')
47		args_set(self->args, 'U', NULL);
48	else if (key == '}')
49		args_set(self->args, 'D', NULL);
50}
51
52int
53cmd_swap_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
54{
55	struct args		*args = self->args;
56	struct winlink		*src_wl, *dst_wl;
57	struct window		*src_w, *dst_w;
58	struct window_pane	*tmp_wp, *src_wp, *dst_wp;
59	struct layout_cell	*src_lc, *dst_lc;
60	u_int			 sx, sy, xoff, yoff;
61
62	dst_wl = cmd_find_pane(ctx, args_get(args, 't'), NULL, &dst_wp);
63	if (dst_wl == NULL)
64		return (-1);
65	dst_w = dst_wl->window;
66
67	if (!args_has(args, 's')) {
68		src_w = dst_w;
69		if (args_has(self->args, 'D')) {
70			src_wp = TAILQ_NEXT(dst_wp, entry);
71			if (src_wp == NULL)
72				src_wp = TAILQ_FIRST(&dst_w->panes);
73		} else if (args_has(self->args, 'U')) {
74			src_wp = TAILQ_PREV(dst_wp, window_panes, entry);
75			if (src_wp == NULL)
76				src_wp = TAILQ_LAST(&dst_w->panes, window_panes);
77		} else
78			return (0);
79	} else {
80		src_wl = cmd_find_pane(ctx, args_get(args, 's'), NULL, &src_wp);
81		if (src_wl == NULL)
82			return (-1);
83		src_w = src_wl->window;
84	}
85
86	if (src_wp == dst_wp)
87		return (0);
88
89	tmp_wp = TAILQ_PREV(dst_wp, window_panes, entry);
90	TAILQ_REMOVE(&dst_w->panes, dst_wp, entry);
91	TAILQ_REPLACE(&src_w->panes, src_wp, dst_wp, entry);
92	if (tmp_wp == src_wp)
93		tmp_wp = dst_wp;
94	if (tmp_wp == NULL)
95		TAILQ_INSERT_HEAD(&dst_w->panes, src_wp, entry);
96	else
97		TAILQ_INSERT_AFTER(&dst_w->panes, tmp_wp, src_wp, entry);
98
99	src_lc = src_wp->layout_cell;
100	dst_lc = dst_wp->layout_cell;
101	src_lc->wp = dst_wp;
102	dst_wp->layout_cell = src_lc;
103	dst_lc->wp = src_wp;
104	src_wp->layout_cell = dst_lc;
105
106	src_wp->window = dst_w;
107	dst_wp->window = src_w;
108
109	sx = src_wp->sx; sy = src_wp->sy;
110	xoff = src_wp->xoff; yoff = src_wp->yoff;
111	src_wp->xoff = dst_wp->xoff; src_wp->yoff = dst_wp->yoff;
112	window_pane_resize(src_wp, dst_wp->sx, dst_wp->sy);
113	dst_wp->xoff = xoff; dst_wp->yoff = yoff;
114	window_pane_resize(dst_wp, sx, sy);
115
116	if (!args_has(self->args, 'd')) {
117		if (src_w != dst_w) {
118			window_set_active_pane(src_w, dst_wp);
119			window_set_active_pane(dst_w, src_wp);
120		} else {
121			tmp_wp = dst_wp;
122			if (!window_pane_visible(tmp_wp))
123				tmp_wp = src_wp;
124			window_set_active_pane(src_w, tmp_wp);
125		}
126	} else {
127		if (src_w->active == src_wp)
128			window_set_active_pane(src_w, dst_wp);
129		if (dst_w->active == dst_wp)
130			window_set_active_pane(dst_w, src_wp);
131	}
132	if (src_w != dst_w) {
133		if (src_w->last == src_wp)
134			src_w->last = NULL;
135		if (dst_w->last == dst_wp)
136			dst_w->last = NULL;
137	}
138	server_redraw_window(src_w);
139	server_redraw_window(dst_w);
140
141	return (0);
142}
143