/* $OpenBSD: cmd-rotate-window.c,v 1.33 2021/08/21 10:22:39 nicm Exp $ */

/*
 * 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);
}