freebsd-dev/contrib/ncurses/panel/p_show.c

/****************************************************************************
 * Copyright (c) 1998-2005,2010 Free Software Foundation, Inc.              *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995                    *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 ****************************************************************************/

/* p_show.c
 * Place a panel on top of the stack; may already be in the stack 
 */
#include "panel.priv.h"

MODULE_ID("$Id: p_show.c,v 1.13 2010/01/23 21:22:16 tom Exp $")

NCURSES_EXPORT(int)
show_panel(PANEL * pan)
{
  int err = ERR;

  T((T_CALLED("show_panel(%p)"), (void *)pan));

  if (pan)
    {
      GetHook(pan);

      if (Is_Top(pan))
	returnCode(OK);

      dBug(("--> show_panel %s", USER_PTR(pan->user)));

      HIDE_PANEL(pan, err, OK);

      dStack("<lt%d>", 1, pan);
      assert(_nc_bottom_panel == _nc_stdscr_pseudo_panel);

      _nc_top_panel->above = pan;
      pan->below = _nc_top_panel;
      pan->above = (PANEL *) 0;
      _nc_top_panel = pan;

      err = OK;

      dStack("<lt%d>", 9, pan);
    }
  returnCode(err);
}