1 /* $OpenBSD: lib_delwin.c,v 1.4 2023/10/17 09:52:08 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright 2020,2021 Thomas E. Dickey * 5 * Copyright 1998-2008,2009 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32 /**************************************************************************** 33 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 34 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 35 * and: Thomas E. Dickey 1996-on * 36 * and: Juergen Pfeifer 2008 * 37 ****************************************************************************/ 38 39 /* 40 ** lib_delwin.c 41 ** 42 ** The routine delwin(). 43 ** 44 */ 45 46 #include <curses.priv.h> 47 48 MODULE_ID("$Id: lib_delwin.c,v 1.4 2023/10/17 09:52:08 nicm Exp $") 49 50 static bool 51 cannot_delete(WINDOW *win) 52 { 53 bool result = TRUE; 54 55 if (IS_PAD(win)) { 56 result = FALSE; 57 } else { 58 WINDOWLIST *p; 59 #ifdef USE_SP_WINDOWLIST 60 SCREEN *sp = _nc_screen_of(win); 61 #endif 62 63 for (each_window(SP_PARM, p)) { 64 if (&(p->win) == win) { 65 result = FALSE; 66 } else if (IS_SUBWIN(&(p->win)) 67 && p->win._parent == win) { 68 result = TRUE; 69 break; 70 } 71 } 72 } 73 return result; 74 } 75 76 NCURSES_EXPORT(int) 77 delwin(WINDOW *win) 78 { 79 int result = ERR; 80 81 T((T_CALLED("delwin(%p)"), (void *) win)); 82 83 if (_nc_try_global(curses) == 0) { 84 if (win == 0 85 || cannot_delete(win)) { 86 result = ERR; 87 } else if (IS_PAD(win)) { 88 win->_parent = NULL; 89 result = _nc_freewin(win); 90 } else { 91 #if NCURSES_SP_FUNCS 92 SCREEN *sp = _nc_screen_of(win); 93 #endif 94 if (IS_SUBWIN(win)) { 95 touchwin(win->_parent); 96 } else if (CurScreen(SP_PARM) != 0) { 97 touchwin(CurScreen(SP_PARM)); 98 } 99 result = _nc_freewin(win); 100 } 101 _nc_unlock_global(curses); 102 } 103 returnCode(result); 104 } 105