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/* $OpenBSD: lib_delwin.c,v 1.4 2023/10/17 09:52:08 nicm Exp $ */
/****************************************************************************
* Copyright 2020,2021 Thomas E. Dickey *
* Copyright 1998-2008,2009 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> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
* and: Thomas E. Dickey 1996-on *
* and: Juergen Pfeifer 2008 *
****************************************************************************/
/*
** lib_delwin.c
**
** The routine delwin().
**
*/
#include <curses.priv.h>
MODULE_ID("$Id: lib_delwin.c,v 1.4 2023/10/17 09:52:08 nicm Exp $")
static bool
cannot_delete(WINDOW *win)
{
bool result = TRUE;
if (IS_PAD(win)) {
result = FALSE;
} else {
WINDOWLIST *p;
#ifdef USE_SP_WINDOWLIST
SCREEN *sp = _nc_screen_of(win);
#endif
for (each_window(SP_PARM, p)) {
if (&(p->win) == win) {
result = FALSE;
} else if (IS_SUBWIN(&(p->win))
&& p->win._parent == win) {
result = TRUE;
break;
}
}
}
return result;
}
NCURSES_EXPORT(int)
delwin(WINDOW *win)
{
int result = ERR;
T((T_CALLED("delwin(%p)"), (void *) win));
if (_nc_try_global(curses) == 0) {
if (win == 0
|| cannot_delete(win)) {
result = ERR;
} else if (IS_PAD(win)) {
win->_parent = NULL;
result = _nc_freewin(win);
} else {
#if NCURSES_SP_FUNCS
SCREEN *sp = _nc_screen_of(win);
#endif
if (IS_SUBWIN(win)) {
touchwin(win->_parent);
} else if (CurScreen(SP_PARM) != 0) {
touchwin(CurScreen(SP_PARM));
}
result = _nc_freewin(win);
}
_nc_unlock_global(curses);
}
returnCode(result);
}
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