/* $OpenBSD$ */

/*
* Copyright (c) 2009 Nicholas Marriott <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#include <sys/types.h>

#include <stdlib.h>

#include "tmux.h"

/*
* Break pane off into a window.
*/

#define BREAK_PANE_TEMPLATE "#{session_name}:#{window_index}.#{pane_index}"

static enum cmd_retval  cmd_break_pane_exec(struct cmd *, struct cmdq_item *);

const struct cmd_entry cmd_break_pane_entry = {
       .name = "break-pane",
       .alias = "breakp",

       .args = { "abdPF:n:s:t:", 0, 0, NULL },
       .usage = "[-abdP] [-F format] [-n window-name] [-s src-pane] "
                "[-t dst-window]",

       .source = { 's', CMD_FIND_PANE, 0 },
       .target = { 't', CMD_FIND_WINDOW, CMD_FIND_WINDOW_INDEX },

       .flags = 0,
       .exec = cmd_break_pane_exec
};

static enum cmd_retval
cmd_break_pane_exec(struct cmd *self, struct cmdq_item *item)
{
       struct args             *args = cmd_get_args(self);
       struct cmd_find_state   *current = cmdq_get_current(item);
       struct cmd_find_state   *target = cmdq_get_target(item);
       struct cmd_find_state   *source = cmdq_get_source(item);
       struct client           *tc = cmdq_get_target_client(item);
       struct winlink          *wl = source->wl;
       struct session          *src_s = source->s;
       struct session          *dst_s = target->s;
       struct window_pane      *wp = source->wp;
       struct window           *w = wl->window;
       char                    *name, *cause, *cp;
       int                      idx = target->idx, before;
       const char              *template;

       before = args_has(args, 'b');
       if (args_has(args, 'a') || before) {
               if (target->wl != NULL)
                       idx = winlink_shuffle_up(dst_s, target->wl, before);
               else
                       idx = winlink_shuffle_up(dst_s, dst_s->curw, before);
               if (idx == -1)
                       return (CMD_RETURN_ERROR);
       }
       server_unzoom_window(w);

       if (window_count_panes(w) == 1) {
               if (server_link_window(src_s, wl, dst_s, idx, 0,
                   !args_has(args, 'd'), &cause) != 0) {
                       cmdq_error(item, "%s", cause);
                       free(cause);
                       return (CMD_RETURN_ERROR);
               }
               if (args_has(args, 'n')) {
                       window_set_name(w, args_get(args, 'n'));
                       options_set_number(w->options, "automatic-rename", 0);
               }
               server_unlink_window(src_s, wl);
               return (CMD_RETURN_NORMAL);
       }
       if (idx != -1 && winlink_find_by_index(&dst_s->windows, idx) != NULL) {
               cmdq_error(item, "index in use: %d", idx);
               return (CMD_RETURN_ERROR);
       }

       TAILQ_REMOVE(&w->panes, wp, entry);
       server_client_remove_pane(wp);
       window_lost_pane(w, wp);
       layout_close_pane(wp);

       w = wp->window = window_create(w->sx, w->sy, w->xpixel, w->ypixel);
       options_set_parent(wp->options, w->options);
       wp->flags |= PANE_STYLECHANGED;
       TAILQ_INSERT_HEAD(&w->panes, wp, entry);
       w->active = wp;
       w->latest = tc;

       if (!args_has(args, 'n')) {
               name = default_window_name(w);
               window_set_name(w, name);
               free(name);
       } else {
               window_set_name(w, args_get(args, 'n'));
               options_set_number(w->options, "automatic-rename", 0);
       }

       layout_init(w, wp);
       wp->flags |= PANE_CHANGED;
       colour_palette_from_option(&wp->palette, wp->options);

       if (idx == -1)
               idx = -1 - options_get_number(dst_s->options, "base-index");
       wl = session_attach(dst_s, w, idx, &cause); /* can't fail */
       if (!args_has(args, 'd')) {
               session_select(dst_s, wl->idx);
               cmd_find_from_session(current, dst_s, 0);
       }

       server_redraw_session(src_s);
       if (src_s != dst_s)
               server_redraw_session(dst_s);
       server_status_session_group(src_s);
       if (src_s != dst_s)
               server_status_session_group(dst_s);

       if (args_has(args, 'P')) {
               if ((template = args_get(args, 'F')) == NULL)
                       template = BREAK_PANE_TEMPLATE;
               cp = format_single(item, template, tc, dst_s, wl, wp);
               cmdq_print(item, "%s", cp);
               free(cp);
       }
       return (CMD_RETURN_NORMAL);
}

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