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      1 /* $OpenBSD$ */
      2 
      3 /*
      4  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott (at) 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, NULL },
     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 (marked_pane.wl == wl_src)
     81 		marked_pane.wl = wl_dst;
     82 	if (args_has(args, 'd')) {
     83 		session_select(dst, wl_dst->idx);
     84 		if (src != dst)
     85 			session_select(src, wl_src->idx);
     86 	}
     87 	session_group_synchronize_from(src);
     88 	server_redraw_session_group(src);
     89 	if (src != dst) {
     90 		session_group_synchronize_from(dst);
     91 		server_redraw_session_group(dst);
     92 	}
     93 	recalculate_sizes();
     94 
     95 	return (CMD_RETURN_NORMAL);
     96 }
     97