/* $OpenBSD$ */

/*
* 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 <string.h>

#include "tmux.h"

/*
* Select pane.
*/

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

const struct cmd_entry cmd_select_pane_entry = {
       .name = "select-pane",
       .alias = "selectp",

       .args = { "DdegLlMmP:RT:t:UZ", 0, 0, NULL }, /* -P and -g deprecated */
       .usage = "[-DdeLlMmRUZ] [-T title] " CMD_TARGET_PANE_USAGE,

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

       .flags = 0,
       .exec = cmd_select_pane_exec
};

const struct cmd_entry cmd_last_pane_entry = {
       .name = "last-pane",
       .alias = "lastp",

       .args = { "det:Z", 0, 0, NULL },
       .usage = "[-deZ] " CMD_TARGET_WINDOW_USAGE,

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

       .flags = 0,
       .exec = cmd_select_pane_exec
};

static void
cmd_select_pane_redraw(struct window *w)
{
       struct client   *c;

       /*
        * Redraw entire window if it is bigger than the client (the
        * offset may change), otherwise just draw borders.
        */

       TAILQ_FOREACH(c, &clients, entry) {
               if (c->session == NULL || (c->flags & CLIENT_CONTROL))
                       continue;
               if (c->session->curw->window == w && tty_window_bigger(&c->tty))
                       server_redraw_client(c);
               else {
                       if (c->session->curw->window == w)
                               c->flags |= CLIENT_REDRAWBORDERS;
                       if (session_has(c->session, w))
                               c->flags |= CLIENT_REDRAWSTATUS;
               }

       }
}

static enum cmd_retval
cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
{
       struct args             *args = cmd_get_args(self);
       const struct cmd_entry  *entry = cmd_get_entry(self);
       struct cmd_find_state   *current = cmdq_get_current(item);
       struct cmd_find_state   *target = cmdq_get_target(item);
       struct client           *c = cmdq_get_client(item);
       struct winlink          *wl = target->wl;
       struct window           *w = wl->window;
       struct session          *s = target->s;
       struct window_pane      *wp = target->wp, *activewp, *lastwp, *markedwp;
       struct options          *oo = wp->options;
       char                    *title;
       const char              *style;
       struct options_entry    *o;

       if (entry == &cmd_last_pane_entry || args_has(args, 'l')) {
               /*
                * Check for no last pane found in case the other pane was
                * spawned without being visited (for example split-window -d).
                */
               lastwp = TAILQ_FIRST(&w->last_panes);
               if (lastwp == NULL && window_count_panes(w) == 2) {
                       lastwp = TAILQ_PREV(w->active, window_panes, entry);
                       if (lastwp == NULL)
                               lastwp = TAILQ_NEXT(w->active, entry);
               }
               if (lastwp == NULL) {
                       cmdq_error(item, "no last pane");
                       return (CMD_RETURN_ERROR);
               }
               if (args_has(args, 'e')) {
                       lastwp->flags &= ~PANE_INPUTOFF;
                       server_redraw_window_borders(lastwp->window);
                       server_status_window(lastwp->window);
               } else if (args_has(args, 'd')) {
                       lastwp->flags |= PANE_INPUTOFF;
                       server_redraw_window_borders(lastwp->window);
                       server_status_window(lastwp->window);
               } else {
                       if (window_push_zoom(w, 0, args_has(args, 'Z')))
                               server_redraw_window(w);
                       window_redraw_active_switch(w, lastwp);
                       if (window_set_active_pane(w, lastwp, 1)) {
                               cmd_find_from_winlink(current, wl, 0);
                               cmd_select_pane_redraw(w);
                       }
                       if (window_pop_zoom(w))
                               server_redraw_window(w);
               }
               return (CMD_RETURN_NORMAL);
       }

       if (args_has(args, 'm') || args_has(args, 'M')) {
               if (args_has(args, 'm') && !window_pane_visible(wp))
                       return (CMD_RETURN_NORMAL);
               if (server_check_marked())
                       lastwp = marked_pane.wp;
               else
                       lastwp = NULL;

               if (args_has(args, 'M') || server_is_marked(s, wl, wp))
                       server_clear_marked();
               else
                       server_set_marked(s, wl, wp);
               markedwp = marked_pane.wp;

               if (lastwp != NULL) {
                       lastwp->flags |= (PANE_REDRAW|PANE_STYLECHANGED);
                       server_redraw_window_borders(lastwp->window);
                       server_status_window(lastwp->window);
               }
               if (markedwp != NULL) {
                       markedwp->flags |= (PANE_REDRAW|PANE_STYLECHANGED);
                       server_redraw_window_borders(markedwp->window);
                       server_status_window(markedwp->window);
               }
               return (CMD_RETURN_NORMAL);
       }

       style = args_get(args, 'P');
       if (style != NULL) {
               o = options_set_string(oo, "window-style", 0, "%s", style);
               if (o == NULL) {
                       cmdq_error(item, "bad style: %s", style);
                       return (CMD_RETURN_ERROR);
               }
               options_set_string(oo, "window-active-style", 0, "%s", style);
               wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED);
       }
       if (args_has(args, 'g')) {
               cmdq_print(item, "%s", options_get_string(oo, "window-style"));
               return (CMD_RETURN_NORMAL);
       }

       if (args_has(args, 'L')) {
               window_push_zoom(w, 0, 1);
               wp = window_pane_find_left(wp);
               window_pop_zoom(w);
       } else if (args_has(args, 'R')) {
               window_push_zoom(w, 0, 1);
               wp = window_pane_find_right(wp);
               window_pop_zoom(w);
       } else if (args_has(args, 'U')) {
               window_push_zoom(w, 0, 1);
               wp = window_pane_find_up(wp);
               window_pop_zoom(w);
       } else if (args_has(args, 'D')) {
               window_push_zoom(w, 0, 1);
               wp = window_pane_find_down(wp);
               window_pop_zoom(w);
       }
       if (wp == NULL)
               return (CMD_RETURN_NORMAL);

       if (args_has(args, 'e')) {
               wp->flags &= ~PANE_INPUTOFF;
               server_redraw_window_borders(wp->window);
               server_status_window(wp->window);
               return (CMD_RETURN_NORMAL);
       }
       if (args_has(args, 'd')) {
               wp->flags |= PANE_INPUTOFF;
               server_redraw_window_borders(wp->window);
               server_status_window(wp->window);
               return (CMD_RETURN_NORMAL);
       }

       if (args_has(args, 'T')) {
               title = format_single_from_target(item, args_get(args, 'T'));
               if (screen_set_title(&wp->base, title)) {
                       notify_pane("pane-title-changed", wp);
                       server_redraw_window_borders(wp->window);
                       server_status_window(wp->window);
               }
               free(title);
               return (CMD_RETURN_NORMAL);
       }

       if (c != NULL && c->session != NULL && (c->flags & CLIENT_ACTIVEPANE))
               activewp = server_client_get_pane(c);
       else
               activewp = w->active;
       if (wp == activewp)
               return (CMD_RETURN_NORMAL);
       if (window_push_zoom(w, 0, args_has(args, 'Z')))
               server_redraw_window(w);
       window_redraw_active_switch(w, wp);
       if (c != NULL && c->session != NULL && (c->flags & CLIENT_ACTIVEPANE))
               server_client_set_pane(c, wp);
       else if (window_set_active_pane(w, wp, 1))
               cmd_find_from_winlink_pane(current, wl, wp, 0);
       cmdq_insert_hook(s, item, current, "after-select-pane");
       cmd_select_pane_redraw(w);
       if (window_pop_zoom(w))
               server_redraw_window(w);

       return (CMD_RETURN_NORMAL);
}

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