/* $OpenBSD$ */

/*
* Copyright (c) 2007 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"

/*
* Select window by index.
*/

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

const struct cmd_entry cmd_select_window_entry = {
       .name = "select-window",
       .alias = "selectw",

       .args = { "lnpTt:", 0, 0, NULL },
       .usage = "[-lnpT] " CMD_TARGET_WINDOW_USAGE,

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

       .flags = 0,
       .exec = cmd_select_window_exec
};

const struct cmd_entry cmd_next_window_entry = {
       .name = "next-window",
       .alias = "next",

       .args = { "at:", 0, 0, NULL },
       .usage = "[-a] " CMD_TARGET_SESSION_USAGE,

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

       .flags = 0,
       .exec = cmd_select_window_exec
};

const struct cmd_entry cmd_previous_window_entry = {
       .name = "previous-window",
       .alias = "prev",

       .args = { "at:", 0, 0, NULL },
       .usage = "[-a] " CMD_TARGET_SESSION_USAGE,

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

       .flags = 0,
       .exec = cmd_select_window_exec
};

const struct cmd_entry cmd_last_window_entry = {
       .name = "last-window",
       .alias = "last",

       .args = { "t:", 0, 0, NULL },
       .usage = CMD_TARGET_SESSION_USAGE,

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

       .flags = 0,
       .exec = cmd_select_window_exec
};

static enum cmd_retval
cmd_select_window_exec(struct cmd *self, struct cmdq_item *item)
{
       struct args             *args = cmd_get_args(self);
       struct client           *c = cmdq_get_client(item);
       struct cmd_find_state   *current = cmdq_get_current(item);
       struct cmd_find_state   *target = cmdq_get_target(item);
       struct winlink          *wl = target->wl;
       struct session          *s = target->s;
       int                      next, previous, last, activity;

       next = (cmd_get_entry(self) == &cmd_next_window_entry);
       if (args_has(args, 'n'))
               next = 1;
       previous = (cmd_get_entry(self) == &cmd_previous_window_entry);
       if (args_has(args, 'p'))
               previous = 1;
       last = (cmd_get_entry(self) == &cmd_last_window_entry);
       if (args_has(args, 'l'))
               last = 1;

       if (next || previous || last) {
               activity = args_has(args, 'a');
               if (next) {
                       if (session_next(s, activity) != 0) {
                               cmdq_error(item, "no next window");
                               return (CMD_RETURN_ERROR);
                       }
               } else if (previous) {
                       if (session_previous(s, activity) != 0) {
                               cmdq_error(item, "no previous window");
                               return (CMD_RETURN_ERROR);
                       }
               } else {
                       if (session_last(s) != 0) {
                               cmdq_error(item, "no last window");
                               return (CMD_RETURN_ERROR);
                       }
               }
               cmd_find_from_session(current, s, 0);
               server_redraw_session(s);
               cmdq_insert_hook(s, item, current, "after-select-window");
       } else {
               /*
                * If -T and select-window is invoked on same window as
                * current, switch to previous window.
                */
               if (args_has(args, 'T') && wl == s->curw) {
                       if (session_last(s) != 0) {
                               cmdq_error(item, "no last window");
                               return (-1);
                       }
                       if (current->s == s)
                               cmd_find_from_session(current, s, 0);
                       server_redraw_session(s);
               } else if (session_select(s, wl->idx) == 0) {
                       cmd_find_from_session(current, s, 0);
                       server_redraw_session(s);
               }
               cmdq_insert_hook(s, item, current, "after-select-window");
       }
       if (c != NULL && c->session != NULL)
               s->curw->window->latest = c;
       recalculate_sizes();

       return (CMD_RETURN_NORMAL);
}