/* $OpenBSD$ */

/*

 * 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 <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|

          PANE_THEMECHANGED);

      server_redraw_window_borders(lastwp->window);

      server_status_window(lastwp->window);

    }

    if (markedwp != NULL) {

      markedwp->flags |= (PANE_REDRAW|PANE_STYLECHANGED|

          PANE_THEMECHANGED);

      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|PANE_THEMECHANGED);

  }

  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);

}