/* $OpenBSD$ */

/*
* 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 "tmux.h"

/*
* Rotate the panes in a window.
*/

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

const struct cmd_entry cmd_rotate_window_entry = {
       .name = "rotate-window",
       .alias = "rotatew",

       .args = { "Dt:UZ", 0, 0, NULL },
       .usage = "[-DUZ] " CMD_TARGET_WINDOW_USAGE,

       .target = { 't', CMD_FIND_WINDOW, 0 },

       .flags = 0,
       .exec = cmd_rotate_window_exec
};

static enum cmd_retval
cmd_rotate_window_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 winlink          *wl = target->wl;
       struct window           *w = wl->window;
       struct window_pane      *wp, *wp2;
       struct layout_cell      *lc;
       u_int                    sx, sy, xoff, yoff;

       window_push_zoom(w, 0, args_has(args, 'Z'));

       if (args_has(args, 'D')) {
               wp = TAILQ_LAST(&w->panes, window_panes);
               TAILQ_REMOVE(&w->panes, wp, entry);
               TAILQ_INSERT_HEAD(&w->panes, wp, entry);

               lc = wp->layout_cell;
               xoff = wp->xoff; yoff = wp->yoff;
               sx = wp->sx; sy = wp->sy;
               TAILQ_FOREACH(wp, &w->panes, entry) {
                       if ((wp2 = TAILQ_NEXT(wp, entry)) == NULL)
                               break;
                       wp->layout_cell = wp2->layout_cell;
                       if (wp->layout_cell != NULL)
                               wp->layout_cell->wp = wp;
                       wp->xoff = wp2->xoff; wp->yoff = wp2->yoff;
                       window_pane_resize(wp, wp2->sx, wp2->sy);
               }
               wp->layout_cell = lc;
               if (wp->layout_cell != NULL)
                       wp->layout_cell->wp = wp;
               wp->xoff = xoff; wp->yoff = yoff;
               window_pane_resize(wp, sx, sy);

               if ((wp = TAILQ_PREV(w->active, window_panes, entry)) == NULL)
                       wp = TAILQ_LAST(&w->panes, window_panes);
       } else {
               wp = TAILQ_FIRST(&w->panes);
               TAILQ_REMOVE(&w->panes, wp, entry);
               TAILQ_INSERT_TAIL(&w->panes, wp, entry);

               lc = wp->layout_cell;
               xoff = wp->xoff; yoff = wp->yoff;
               sx = wp->sx; sy = wp->sy;
               TAILQ_FOREACH_REVERSE(wp, &w->panes, window_panes, entry) {
                       if ((wp2 = TAILQ_PREV(wp, window_panes, entry)) == NULL)
                               break;
                       wp->layout_cell = wp2->layout_cell;
                       if (wp->layout_cell != NULL)
                               wp->layout_cell->wp = wp;
                       wp->xoff = wp2->xoff; wp->yoff = wp2->yoff;
                       window_pane_resize(wp, wp2->sx, wp2->sy);
               }
               wp->layout_cell = lc;
               if (wp->layout_cell != NULL)
                       wp->layout_cell->wp = wp;
               wp->xoff = xoff; wp->yoff = yoff;
               window_pane_resize(wp, sx, sy);

               if ((wp = TAILQ_NEXT(w->active, entry)) == NULL)
                       wp = TAILQ_FIRST(&w->panes);
       }

       window_set_active_pane(w, wp, 1);
       cmd_find_from_winlink_pane(current, wl, wp, 0);
       window_pop_zoom(w);
       server_redraw_window(w);

       return (CMD_RETURN_NORMAL);
}