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

97 lines
3.6 KiB
C

/****************************************************************************
* Copyright (c) 1998 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_hide.c
* Remove a panel from the stack
*/
#include "panel.priv.h"
MODULE_ID("$Id: p_hide.c,v 1.3 1999/09/29 15:22:32 juergen Exp $")
/*+-------------------------------------------------------------------------
__panel_unlink(pan) - unlink panel from stack
--------------------------------------------------------------------------*/
static void
__panel_unlink(PANEL *pan)
{
PANEL *prev;
PANEL *next;
#ifdef TRACE
dStack("<u%d>",1,pan);
if(!_nc_panel_is_linked(pan))
return;
#endif
PANEL_UPDATE(pan,(PANEL*)0);
prev = pan->below;
next = pan->above;
if(prev)
{ /* if non-zero, we will not update the list head */
prev->above = next;
if(next)
next->below = prev;
}
else if(next)
next->below = prev;
if(pan == _nc_bottom_panel)
_nc_bottom_panel = next;
if(pan == _nc_top_panel)
_nc_top_panel = prev;
pan->above = (PANEL *)0;
pan->below = (PANEL *)0;
dStack("<u%d>",9,pan);
}
int
hide_panel(register PANEL *pan)
{
if(!pan)
return(ERR);
dBug(("--> hide_panel %s", USER_PTR(pan->user)));
if(!_nc_panel_is_linked(pan))
{
pan->above = (PANEL *)0;
pan->below = (PANEL *)0;
return(ERR);
}
__panel_unlink(pan);
return(OK);
}