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      1 /* $OpenBSD$ */
      2 
      3 /*
      4  * Copyright (c) 2009 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  * Switch window to selected layout.
     27  */
     28 
     29 static enum cmd_retval	cmd_select_layout_exec(struct cmd *,
     30 			    struct cmdq_item *);
     31 
     32 const struct cmd_entry cmd_select_layout_entry = {
     33 	.name = "select-layout",
     34 	.alias = "selectl",
     35 
     36 	.args = { "Enopt:", 0, 1, NULL },
     37 	.usage = "[-Enop] " CMD_TARGET_PANE_USAGE " [layout-name]",
     38 
     39 	.target = { 't', CMD_FIND_PANE, 0 },
     40 
     41 	.flags = CMD_AFTERHOOK,
     42 	.exec = cmd_select_layout_exec
     43 };
     44 
     45 const struct cmd_entry cmd_next_layout_entry = {
     46 	.name = "next-layout",
     47 	.alias = "nextl",
     48 
     49 	.args = { "t:", 0, 0, NULL },
     50 	.usage = CMD_TARGET_WINDOW_USAGE,
     51 
     52 	.target = { 't', CMD_FIND_WINDOW, 0 },
     53 
     54 	.flags = CMD_AFTERHOOK,
     55 	.exec = cmd_select_layout_exec
     56 };
     57 
     58 const struct cmd_entry cmd_previous_layout_entry = {
     59 	.name = "previous-layout",
     60 	.alias = "prevl",
     61 
     62 	.args = { "t:", 0, 0, NULL },
     63 	.usage = CMD_TARGET_WINDOW_USAGE,
     64 
     65 	.target = { 't', CMD_FIND_WINDOW, 0 },
     66 
     67 	.flags = CMD_AFTERHOOK,
     68 	.exec = cmd_select_layout_exec
     69 };
     70 
     71 static enum cmd_retval
     72 cmd_select_layout_exec(struct cmd *self, struct cmdq_item *item)
     73 {
     74 	struct args		*args = cmd_get_args(self);
     75 	struct cmd_find_state	*target = cmdq_get_target(item);
     76 	struct winlink		*wl = target->wl;
     77 	struct window		*w = wl->window;
     78 	struct window_pane	*wp = target->wp;
     79 	const char		*layoutname;
     80 	char			*oldlayout, *cause;
     81 	int			 next, previous, layout;
     82 
     83 	server_unzoom_window(w);
     84 
     85 	next = (cmd_get_entry(self) == &cmd_next_layout_entry);
     86 	if (args_has(args, 'n'))
     87 		next = 1;
     88 	previous = (cmd_get_entry(self) == &cmd_previous_layout_entry);
     89 	if (args_has(args, 'p'))
     90 		previous = 1;
     91 
     92 	oldlayout = w->old_layout;
     93 	w->old_layout = layout_dump(w->layout_root);
     94 
     95 	if (next || previous) {
     96 		if (next)
     97 			layout_set_next(w);
     98 		else
     99 			layout_set_previous(w);
    100 		goto changed;
    101 	}
    102 
    103 	if (args_has(args, 'E')) {
    104 		layout_spread_out(wp);
    105 		goto changed;
    106 	}
    107 
    108 	if (args_count(args) != 0)
    109 		layoutname = args_string(args, 0);
    110 	else if (args_has(args, 'o'))
    111 		layoutname = oldlayout;
    112 	else
    113 		layoutname = NULL;
    114 
    115 	if (!args_has(args, 'o')) {
    116 		if (layoutname == NULL)
    117 			layout = w->lastlayout;
    118 		else
    119 			layout = layout_set_lookup(layoutname);
    120 		if (layout != -1) {
    121 			layout_set_select(w, layout);
    122 			goto changed;
    123 		}
    124 	}
    125 
    126 	if (layoutname != NULL) {
    127 		if (layout_parse(w, layoutname, &cause) == -1) {
    128 			cmdq_error(item, "%s: %s", cause, layoutname);
    129 			free(cause);
    130 			goto error;
    131 		}
    132 		goto changed;
    133 	}
    134 
    135 	free(oldlayout);
    136 	return (CMD_RETURN_NORMAL);
    137 
    138 changed:
    139 	free(oldlayout);
    140 	recalculate_sizes();
    141 	server_redraw_window(w);
    142 	notify_window("window-layout-changed", w);
    143 	return (CMD_RETURN_NORMAL);
    144 
    145 error:
    146 	free(w->old_layout);
    147 	w->old_layout = oldlayout;
    148 	return (CMD_RETURN_ERROR);
    149 }
    150