/* $OpenBSD$ */

/*

 * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>

 *

 * 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);

}